zehnder nest systems radiant conditioning solutions
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The next generation ofradiant conditioning systems...
Enjoying the greatest comfort at home and in the workplace is more than just a desire; it’s one of our most fundamental needs.
To meet these needs, Zehnder has developed the most complete system on the market, to provide the perfect indoor environments incorporating optimal temperature and humidity conditions all year round.
The technologies used eliminate the disadvantages typically associated with traditional systems, such as fluctuating temperatures or draughts. In fact, by using one of many structures already in place, whether a wall or ceiling, an even temperature can be achieved easily.
Zehnder Nestsystems uses water at very low temperatures in winter (27-30°C instead of the usual 70-80°C) and relatively high temperatures in summer (15-20°C compared to the usual 7-12°C), resulting in satisfaction not only for the body and mind, but also for the pocket.
That’s what we at Zehnder call absolute comfort.
Contents:
What is NEST 4
How it works 6
Build your system 8
Performance 10
Applications 12
Technical specification data 13
4
What is NEST..?
Heating, cooling and dehumidification
systems for the perfect indoor climate.
Zehnder Nestsystems comprise of a
network of panels which boast dual
heating and cooling functionality,
rapid response times, exceptional
controllability and superior energy
efficiency.
Zehnder radiant heating and cooling
elements are incorporated into a
specially designed plasterboard panel
which effectively replaces a standard
panel within the wall or ceiling and
enables it to be fitted as part of the
general construction of the building.
Benefits:
� Clean, non-obstructive aesthetic design
� Complete controllability and regulation of temperature and humidity to create the perfect indoor climate
� Ideal for low temperature systems (up to 50°C)
� Energy savings of 30-50%
� Output in accordance with EN14037 for heating and EN 14240 for cooling
NEST Radiant Conditioning Systems installed within the ceiling and walls
Aesthetically pleasing without compromising architectural design
Creates the perfect indoor climate
5
Introducing Zehnder NIC radiant panels...
Prefabricated sandwich panel:
� Plasterboard, polystyrene foam panel and plastic pipes.
Hydraulically balanced:
� The system is self balancing requiring no further alterations once installed.
Aesthetically pleasing:
� The radiant surface is finished in the same way as standard plasterboard panels.
Adaptable: � Suitable for both heating and cooling rooms
� Can be installed in the ceiling or on the wall
Easy to install:
� Noticeably reduces on-site installation times, requiring only plastering or decoration.
Connections:Quick-fit connections supplied as standard
Fully controllable: With the addition of advanced and self-regulating systems
Dehumidification units: When cooling, prevent the risk of condensation
6
How it works...
Heating
Zehnder radiant panels replicate the
natural thermal effect of the sun. The
radiant panels are heated by hot water
and give off energy into the room. This
energy is only converted into a heating
effect when it meets the human body or
an object.
When heating with radiant panels, the
room air temperature is lower than
the resultant temperature but with the
same sense of perceived temperature.
The result is that energy usage and
costs are reduced due to the lower
difference between the room air and the
outside air temperature (Fig. 1). This is
especially effective when compared with
traditional air heating (Fig. 2).
Cooling
Cold water flows through the ceiling
panels making them the coolest item in
the room. Warmer items within the room
heat the air which then passes over
the cool surface of the panel and cools
down. The cooled air flows back into
the room.
In summer, when cooling with radiant
panels, the room air temperature is
higher than the resultant temperature
but with the same sense of perceived
temperature. The result is that the
difference between the room air
temperature and the outside air
temperature reduces the total cooling
load (Fig. 3) and, again, saves energy
and costs especially when compared to
traditional air cooling (Fig. 4).
Air temperature 18°C
Surface temperature 21°C
Perceived
temperature 20°C
Fig. 1: Air vs Perceived °C with radiant heating
Air temperature 21°C
Surface temperature 15°C
Perceived
temperature 18°C
Air temperature 27°C
Surface temperature 24°C
Perceived
temperature 25°C
Air temperature 22°C
Surface temperature 27°C
Perceived
temperature 25°C
Fig. 2: Air vs Perceived °C with air heating
Fig. 4: Air vs Perceived °C with air cooling
Fig. 3: Air vs Perceived °C with radiant cooling
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Compared to other
systems...This is where radiant conditioning really
comes into its own:
Compared to more traditional heating
systems such as Underfloor Heating
and Active Building Systems, desired
temperatures can be achieved much
quicker with Zehnder Nestsystems due
to the capacity for self-regulation of
temperature fluctuations, thus saving
between 30 - 50% of energy usage and
costs (Fig. 1).
Zehnder Nestsystems also eliminate
the disadvantages typically associated
with alternative systems such as Fan
Coil Units. Not only are perceived
temperatures achieved more efficiently
(Fig. 2), radiant conditioning operates
virtually without noise nor has the
unpleasant draughts or associated
distribution of dust.
*1 To simulate the miscellaneous inertias of various systems, tests were carried out using a radiant ceiling panel, an underfloor heating system and an active building system. All systems were cooled to a surface temperature of 17°C. The systems were then subjected to the same mass flow and the same flow temperature until each system had achieved a surface temperature of approximately 35°C.
*2 The inertia testing of both Radiant Conditioning Systems and Fan Coil Units were carried out independently in a number of 5-star hotel rooms by Venice University.
8 hours
Active
buil
ding
syste
m
45.0 °C
40
35
30
25
20
15.0 °C
17.0 °C
45.0 °C
40
35
30
25
20
15.0 °C
17.5 °C
45.0 °C
40
35
30
25
20
15.0 °C
17.5 °C
45.0 °C
40
35
30
25
20
15.0 °C
18.5 °C
45.0 °C
40
35
30
25
20
15.0 °C
25.4 °C
45.0 °C
40
35
30
25
20
15.0 °C
33.6 °C
45.0 °C
40
35
30
25
20
15.0 °C
39.5 °C
45.0 °C
40
35
30
25
20
15.0 °C
17.7 °C
45.0 °C
40
35
30
25
20
15.0 °C
35.0 °C
Radiant ceiling panels Underfloor heating system Active building systemS
tart
tem
pera
ture
Beg
inn
ing
afte
r 1
min
ute
afte
r 2
ho
urs
afte
r 8
ho
urs
Time
1 m
inute
Rad
iant p
anels
2 hours
Under
floor
heati
ng sy
stem
Fig. 1: Zehnder Radiant Conditioning vs Underfloor Heating & Active Building Systems*1
Fig. 2: Zehnder Radiant Conditioning vs Fan Coil Units*2
Heating in the winter months: Nestsystems (on the left) vs. Fan Coil Units (on the right)
30
29
28
27
26
25
24
0 10 mins 35 mins 50 mins 60 mins
30
29
28
27
26
25
24
0 10 mins 35 mins 50 mins 60 mins
24
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15
0 10 mins 35 mins 50 mins 60 mins
24
23
22
21
20
19
18
17
16
15
0 10 mins 35 mins 50 mins 60 mins
Cooling in the summer months: Nestsystems (on the left) vs. Fan Coil Units (on the right)
Perceived temperature °C Actual temperature °C
8
Build YOUR system...
Zehnder Nestsystems are suitable for both heating
and cooling rooms, and can be installed in the
ceiling or on the wall.
The main component of the system is the
radiant panel itself, which can then be added to
dehumidification units and / or control systems
which means the Zehnder Nestsystems are as
adaptable as you require them to be to meet your
exact design needs.
Offer 1
Plasterboard radiant panels with hydraulic pump, connectors and tubing
The Zehnder NIC panels uniformly placed on the ceiling or wall create a perfect, naturally comfortable climate. The heat or cooling effect is distributed in a balanced manner over the complete area.
The panels are suitable for both new build and refurbishment projects and are available in three sizes: 1200 x 500 mm, 1200 x 1000 mm and 1200 x 2000 mm.
Each prefabricated sandwich panel consists of:
� 15 mm-thick plasterboard panel
� 27 mm-thick EPS 200 class 1 polystyrene foam panel
� Spiral circuits of PE-Xa O 8 x 1 mm tube with an oxygen barrier to carry the hot or cold water
The circuits are all the same length, with constant hydraulic parameters, and they are connected with each other by the same tube used in the circuits, with a free length of about 60 cm protruding from each panel.
A wide range of pumps and distribution manifolds are available to match your exact hydraulic requirements.
Radiant panel mounted in ceiling
Better still...
Why not let us design your system for you?
Contact us for further information.
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Offer 3
Plasterboard radiant panels with hydraulic pump, connectors and tubing
PLUS controls
PLUS dehumidification
The Zehnder Dew dehumidifiers and ducting control the humidity of the rooms at a constant 50-55%. This level avoids condensation to form whilst cooling with Zehnder NEST radiant conditioning systems.
Designed specifically for installation with high-efficiency dual flow heat regenerators, the Zehnder ComfoDew units optimise plant engineering in terms of comfort, energy savings and air quality.
Zehnder Dew 200, 350 and 500 are designed for small to medium-sized residential and commercial properties, whilst the Zehnder Dew 700 is designed for medium to large residential and commercial applications.
Ceiling mounted version of dehumidifier
Offer 2
Plasterboard radiant panels with hydraulic pump, connectors and tubing
PLUS controls
The Zehnder Chronosonda Control system automatically determines the optimum water temperature of the system in consideration of internal and external conditions and dew point factors.
The sensors can be installed anywhere: in homes, hotel rooms, offices or hospitals, etc. The sensors measure the delivery water temperature in the system and the external air temperature which are an important and obligatory accessories for managing a radiant conditioning system. For heating-only systems, a control sensor has also been developed to control the room temperature.
Simple, easy-to-understand icons have been used to make setting the parameters and displaying the zone states as user friendly as possible. The 4 buttons and the display allow the user to set the room temperature and relative humidity directly; the system can be switched off, and 5 timer programmes, along with the zone operating mode, frost protection and temperature reduction can be set directly from inside the room.
Zehnder Chronosonda Control system with interface
10
Performance
Tests have been independently
carried out by the WSPLab
laboratories in Italy to certify the
thermal output of the Zehnder
Nestsystems radiant panels, in
accordance with the test methods
indicated by current regulations.
Heating outputs are fully tested to
EN 14037.
Cooling outputs are fully tested to
EN 14240.
The ΔT (K) is an average of two
temperatures:
1. The average of delivery and
return temperature, and
2. Room air temperature
Full technical data can be found
on page 16.
Zehnder Nestsystems radiant panels
Zehnder NIC 600
1200 x 2000 mm
Zehnder NIC 300
1200 x 1000 mm
Zehnder NIC 150
1200 x 500 mm
∆T (K) Heating output in Watts (tested to EN 14037)
28 290 144 7227 279 140 7026 268 134 6725 258 129 6424 247 123 6223 236 118 5922 225 113 5621 215 107 5420 204 102 5119 193 97 4818 182 91 4617 172 86 4316 162 81 4015 151 76 3814 140 70 3513 130 65 3312 120 60 3011 109 55 2710 99 49 259 88 44 228 78 39 20
∆T (K) Cooling output in Watts (tested to EN 14240)
5 55 28 146 68 34 177 81 40 208 94 47 249 107 54 2710 120 60 3011 134 67 3412 148 74 3713 161 81 40
Need help with the design...?
Let us design your system for you:
Our in-house team would be more than pleased to help
design your system, without cost, and visit site if required.
12
Applications
The principle of radiant heating and cooling can be used in many applications for rooms and buildings.
Zehnder Nestsystems have been used for decades to provide indoor climate solutions for various buildings including residential buildings, retail outlets, offices and public buildings such as schools and hospitals.
For some considerable time they have been an essential component of innovative construction projects.
Offices
� False ceilings, housing the M&E services can be finished with Zehnder panels.
� The interior environment nurtures healthy and productive employees
� Avoids ‘sick building’ syndrome
Hotels
� Acoustic and comfort solutions
� Free spaces, no air movement, no noise and a uniform feeling of wellbeing
� Individual room climates can be controlled from the lobby desk or a remote location
Schools
� Allows safety to be the prime concern: no dangerous corners, edges or exposed surfaces
� Provides a healthy, comfortable and safe environment: perfect for high performance and productivity
Residential � Ideally suited to new building regulations
� Low inertia systems
� No intrusion on the living space
� Quiet, healthy, natural and uniform comfort conditions
Hospitals
� Hygienic solution
� No exposed parts to keep clean
� No parts which present any hazard to the patients
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Technical Specification Data
System overview 14Connection possibilities 17Zehnder NIC panel 18PE-Xa 8 x 1 tube with oxygen barrier 20Multilayer 20 x 2 insulated tube 22Connections 26Distribution manifold 27Ct box Sub units 28Zehnder Chronosonda 32Zehnder control BUS units 34Zehnder Dew dehumidification units 36Zehnder Comfosystems 39
14
1 2
5
6
8
9
The System...
NIC panel incorporating PE-Xa 8 x 1 tube with oxygen barrier1 2
5
6
7
Distribution manifold
Pump (Ct box sub-unit)
Room controls / sensors
10
15
3
4
7
3
4
8
9
Insulated 20 x 2 multilayer tube
Quick fix connections
Central control unit
Dehumidification unit
Boiler & Chiller or Heat Recovery unit10
16
Zehnder Nestsystems is suitable for both heating and
cooling rooms, and can be installed in the ceiling or on the
wall. In addition to the various set-up options, the radiant
system provides another advantage: when installed in
ceilings, it acts as a finishing and insulating element in the
building work.
The panels are fastened using standard plasterboard
metal profiles positioned to allow the installation of the
linear manifolds connecting the internal circuits of the
panels between panels: The linear manifolds are made of
a multilayer O 20 x 2 mm tube with an oxygen barrier and
come with Zehnder quick-fit connections for the O 8 x 1
mm PE-Xa tubes with oxygen barrier used for the circuits
inside the panels.
The radiant surface is finished in the same way as
standard plasterboard panels (filled and reinforced with
mesh or masking tape over the joints, primed, painted,
spatula finish, etc.).
Zehnder Nestsystems primarily represents a simple,
rational, efficient and economically viable solution for
dry radiant panel heating and cooling for the modern
building trade in the construction of new buildings or
refurbishment.
Zehnder Nestsystems offers both plant engineering
and construction functions, as the panels provide heat
insulation and replace the plaster finish, leaving room for
electrical systems and plumbing.
Zehnder NIC panels are easy to install when refurbishing;
the installation requires no brickwork but only plasterwork
or decoration.
Zehnder Nestsystems notably reduces on-site installation
times and there will be less cleaning to do, with no
chases cut in the walls or finishing required after electrical
installations and plumbing are laid. No bulky traditional
heating or air conditioning units need to be installed
(radiators or fan coils).
Zehnder Nestsystems can be installed on the walls or
ceilings, and requires no hydraulic balancing as the system
is self-balancing. Prior to start-up, the panels are held in
place by normal metal plasterboard profiles screwed onto
the brickwork.
All connections between the circuit and the manifolds
of the linear adduction lines are made with quick-fit
connections, allowing rapid implementation of the lines
supplying the panels. The “linear manifolds” installed near
the panels guarantee the parallel hydraulic connection of
each individual module in order to maintain the pressure
loss constant, regardless of the number of modules
installed. This facilitates the start-up of the installation.
Finally, for an optimal installation depth, all distribution lines
(insulated and preinsulated) remain within the limits of the
panel insulation, requiring a maximum of 69 mm in depth.
The Zehnder NIC panels with quick-fit connections
has a maximum operating pressure of 4 bar (at a liquid
temperature of 40°C).
Zehnder Nestsystems radiant conditioning panels
Zehnder NIC panels installed in the ceiling
17
Connection possibilities
1 x Zehnder quick-fit connections (02000118)
6 x Zehnder quick-fit connections (02000118)8 x connections (02000119)
2 x Zehnder quick-fit connections (02000118)2 x connections (02000119)
3 x Zehnder quick-fit connections (02000118)4 x connections (02000119)
6 x Zehnder quick-fit connections (02000118)10 x connections (02000119)
4 x Zehnder quick-fit connections (02000118)4 x connections (02000119)
8 x Zehnder quick-fit connections (02000118)10 x connections (02000119)
4 x Zehnder quick-fit connections (02000118)4 x connections (02000119)
Two 1.2m x 0.5m panels connected in series:1 x Zehnder quick-fit connections (02000118)
Quick connector 8-8mm
Zehnder quick-fit connection (02000118)
FlowReturn
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Zehnder NIC panel
The Zehnder NIC panel is a radiant ceiling and/or wall
mounted prefabricated sandwich panel consisting of a 15
mm thick plasterboard panel and a 27 mm-thick EPS 200
class 1 polystyrene foam panel with a density of 30kg/m3,
housing 1 or 2 spiral circuits of PE-Xa Ø8x1 mm tube with
an oxygen barrier, depending on the model. The position
of the tubes is marked on the outer surface of the panels
to facilitate installation.
The Zehnder NIC panel is available in three fully-integrated
versions. The circuits are all the same length, with
constant hydraulic parameters, and they are connected
with each other by the same tube used in the circuits, with
a free length of about 60 cm protruding from each panel.
ΔT (K) cooling water: 3°C
Cooling output: 60 w/m2 with water at 15°C
ΔT (K) heating water: 5°C
Heating output: 100 w/m2 with water at 40°C
Output certified in accordance with standards EN 14037
and EN 14240.
2000mm 1000mm 500mm
1200
mm
1200
mm
1200
mm
Zehnder NIC 600 Zehnder NIC 150Zehnder NIC 300
Pressure loss
3000
2500
2000
1500
1000
500
0 10 20 30 40 50 60
Flow rate (l/h)
Dp
(mm
H2O
)
Zehnder NIC 150
Zehnder NIC 600 and 300
1
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Zehnder NIC panels
Zehnder NIC 600 Zehnder NIC 300 Zehnder NIC 150
Part no. ModelRadiant panel
dimensions (mm)
Thickness of radiant panel +
Insulation = Total
Dry weight of radiant panel
Number x length of circuits = Total water volume (l)
02000129 Zehnder NIC 600 with PE-Xa tube and EPS insulation
2000 x 1200 mm 15 + 27 = 42 mm 34.4 Kg – 14 Kg/m2 Two x 22 m = 1 litre
02000130 Zehnder NIC 300 with PE-Xa tube and EPS insulation
1000 x 1200 mm 15 + 27 = 42 mm 17.2 Kg – 14 Kg/m2 One x 22 m = 0.5 litre
02000131 Zehnder NIC 150 with PE-Xa tube and EPS insulation
500 x 1200 mm 15 + 27 = 42 mm 8.6 Kg – 14 Kg/m2 One x 11 m = 0.3 litre
Part no. Model PackagingMax No. of
panels per pack
Surface area m2
covered by panels in pack
02000129 Zehnder NIC 600 with PE-Xa tube and EPS insulation
Pallet1300 x 2000 x 1000
25 60
02000130 Zehnder NIC 300 with PE-Xa tube and EPS insulation
Pallet1300 x 1000 x 1000
25 30
02000131 Zehnder NIC 150 with PE-Xa tube and EPS insulation
Pallet1300 x 1000 x 1000
50 30
Zehnder NIC EPS finishing panel
Part no. ModelPanel dimensions
(mm)
Thickness of radiant panel +
Insulation = Total
Panel weight(kg - kg/m2)
02000003 NIC EPS finishing panel 2000 x 1200 25 + 27 = 42 34.4 Kg – 14 Kg/m2
Part no. Model PackagingMax No. of
panels per pack
Surface area m2
covered by panels in pack
02000003 NIC EPS finishing panelPallet
1300 x 2000 x 1000 25 60
Zehnder NIC radiant panels are also available, on request, with a wood fibre panel instead of the polystyrene foam panel, for structures built to Green Housing standards.
Monobloc prefabricated dummy panel consisting of a 15 mm thick plasterboard panel and a 27 mm-thick EPS 200 polystyrene foam panel.
This panel is used to finish any gaps or for areas where working radiant panels are not required
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The PE-Xa 8 x 1 tube is used within the NIC panels to
distribute the water through the panels to heat and / or
cool the room.
Construction specifications
� The inner layer made of Pe-Xa (high-density reticulated polyethylene in accordance with method “C” using ß rays) has an extremely smooth surface meaning a drastic reduction in pressure loss compared to the traditional metal tube used in the sanitary and heating sector.
� The outer layer made of EVOH (ethylene-vinyl-alcohol), forms a barrier of a few dozen µm, which makes the tube practically impermeable to oxygen. The amount of oxygen that seeps through the tube in a day at a temperature of 40°C is less than 0.1 grams per cubic metre, meaning a drastic reduction in corrosive problems in heating systems when plastic tubes are used in combination with materials affected by said phenomena.
� The intermediate layer, however, is a very thin layer of polymer (highly adhesive) that bonds the two previous layers together.
Material-related specifications
� Thermal conductivity: 0.35 W/m°K pressure resistance and resistance to stress-cracking:
� Pressure resistance, compliant with standard ISO 9080 (tested by Studsvik Polymer, an internationally acknowledged test laboratory)
� Test temperature: 110°C, 95°C and 20°C
� 10000 hour test passed
The resistance of the material to stress cracking and
pressure at a temperature of 120°C were tested by the
Studsvik laboratory with excellent results.
Oxygen diffusion-related specifications
Oxygen diffusion permeability:
� Oxygen diffusion permeability compliant with DIN 4726/4729 (tested by MPA Nordrhein-Westfalen)
� Requirements: after exposing the tube to suitable heat cycles, oxygen diffusion must be less than 0.1 g/m3 per day at a temperature of 40°C.
� Result: 0.004 g/m3 per day (25 times lower than the required value).
PE-Xa 8 x 1 tube with oxygen barrier
PE-Xa
EVOH
Adhesive
Technical specifications Value Unit of measurement Standard
Degree of reticulation .70 % EN 579, ASTM D 2765
Volumetric mass (density) 0.926 g/cm3 ISO 1183:1987 method D
Coefficient of linear thermal expansion 1.8 x 10-4 K-1 DIN 52328
Thermal conductivity approx. 0.4 W / (m x K) DIN 52612
Softening point approx. 130 °C
Ultimate elongation > 500 % ISO 6259:3 . 1997
Oxygen permeability at 40°C. 0.32 mg / (m2 x d) DIN 4726:3.5
. 0.10 g / (m3 x d) DIN 4726:3.5
Roughness factor 0.0005
* Water for human consumption is understood to mean purified or non-purified drinking water used to prepare food or drinks or for other domestic uses, regardless of the source, whether supplied by a distribution network, in tanks, bottles or other containers; the classification also refers to water used by companies producing, processing, preserving or distributing products or substances for human consumption**
** See the applicable laws in force and the above-mentioned standards and decree for more detailed information.
*** This is the minimum radius measured on the plane of the tube axis at the point of curvature; d refers to the external tube diameter.
2
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Dimensions (mm)
Operating Pressure (bar)
Application class Temperature up to 60°C; product life 50
years
Temperature from 60 to 80°C; product life
50 years
Temperature from 80 to 95°C; product life
10 yearsClass 1 Class 2 Class 3 Class 4
8 x 1 Classification method not used for this diameter 10 6 6
Class** Operating conditions for a product life of 50 years and 100 hours, of which: Field of application
1 *** 49 years at an operating temperature (Toper) of 60°C, 1 year at a max. temperature (Tmax) of 80°C and 100 hours at a malfunction temperature (Tmal) of 95°C
Supply of hot water (60°C)
2 *** 49 years at an operating temperature (TD) of 70°C, 1 year at a max. temperature (Tmax) of 80°C and 100 hours at a malfunction temperature (Tmal) of 95°C
Supply of hot water (70°C)
4
2.5 years at an operating temperature (TD) of 20°C, 20 years at an operating temperature (TD) of 40°C, 25 years at an operating temperature (TD) of 60°C, 2.5 year at a max. temperature (Tmax) of 70°C and 100 hours at a malfunction temperature (Tmal) of 100°C
Floor heating and low-temperature radiators
5
14 years at an operating temperature (TD) of 20°C, 25 years at an operating temperature (TD) of 60°C, 10 years at an operating temperature (TD) of 80°C, 1 years at a max. temperature (Tmax) of 90°C and 100 hours at a malfunction temperature (Tmal) of 100°C
Floor heating and high-temperature radiators
MarkingPE-X EVOH O 8 x 1.0 - SKZ A441 - Application class 1/8 bar, 2/8 bar, 4/10 bar, 5/8 bar oxygen barrier complying with DIN 4726 - XX00X - (--)/(--)/(--) - X.00.0000.00 - 000 m - >I<
Manufacturer’s name and trademark
PE-X EVOH Type “C” reticulated polyethylene with oxygen barrier
Ø 8 x 1.0 External diameter and tube wall thickness
SKZ A441 Certification obtained
Application class Application classes (see the relevant section of this sheet)
Oxygen barrier complying with DIN 4726 The impermeability to oxygen was tested in accordance with standard DIN 4726
XX00X - (--)/(--)/(--) – X.00.0000.00 – 000m – >I< Fraud prevention no., date of production, batch no. and length in metres
Pressure loss of new Nest tube filled with water at room conditions
(T = 293.16 K; P = 1 atm)
The recommended speed range is highlighted in red.
Pre
ssur
e lo
ss P
a/m
(10
Pa/
m =
100
mm
/m H
2O)
Flow rate L/h
22
Multilayer 20 x 2 insulated tube
The Multilayer tube is used to transfer water between the panels to the distribution manifold.
The multilayer tube is made of 5 layers bonded solidly together
� an internal PE-HD reticulated PE-Xb layer
� an intermediate aluminium layer
� an external PE-HD layer
� two adhesive layers inserted respectively between the external and intermediate layer and between the intermediate and internal layer.
The multilayer tube can be used in both the residential and industrial sectors with excellent results in radiant heating systems and hot water distribution systems, as well as in heating systems with radiators or fan coils.
In fact, the multilayer tubing combines the reliability and solidity of traditional metal piping with the practical installation of plastic tubing, eliminating the characteristic drawbacks inherent to each of the two types. The main advantages of the Nest system:
Fast installation
� The tube can be bent cold by hand into tight curves without deforming the section
� Light and strong (the aluminium core makes the tubing resistant to foot traffic and accidental shocks)
� The tube remains shaped in the form it was bent into: whole parts of the system can be constructed off-site, such as the offtakes of bathroom fixtures complete with the relevant final connections
Reduced elongation
Thermal dilation is very similar to that of metal piping, in other words approximately 1/4 ÷ 1/8 that of plastic tubing.
Limited pressure loss, resistant to corrosion and chemical agents
The surface of the internal Pe-Xb layer is extremely smooth resulting in a drastic reduction in pressure loss compared to traditional metal piping. Furthermore, this layer means the piping is:
The surface of the internal Pe-Xb layer is extremely smooth resulting in a drastic reduction in pressure loss compared to traditional metal piping. Furthermore, this layer means the piping is:
� Very resistant to acid and base chemical agent attacks
� Free of limescale deposits (reduces the possibility of algae and bacteria formation; maintains fluidodynamic characteristics over time)
� Effective protection of the aluminium core from phenomena of chemical or natural corrosion. Furthermore, the special design of the connections used, isolating the metal core, eliminates the risk of electrochemical corrosion
Soundproofing
For noise that may be produced by turbulence, vibrations, etc.
Impermeability to oxygen
The internal aluminium layer makes the tube completely impermeable to oxygen, gas and steam, preventing:
� the proliferation of algae and bacteria
� corrosion in the circuits
Inner layer impermeable to UV rays
The inner PE-Xb layer is protected by the aluminium layer which prevents the progressive deterioration due to damage caused by exposure to UV rays.
Note: The tube is supplied in packs that protect it during storage. The outer polyethylene layer of the tube should not be exposed to direct sunlight as it is not very resistant to UV rays.
Marking
PE-X EVOH O 8 x 1.0 - SKZ A441 - Application class 1/8 bar, 2/8 bar, 4/10 bar, 5/8 bar
oxygen barrier complying with DIN 4726 - XX00X - (--)/(--)/(--) - X.00.0000.00 - 000 m - >I<
Manufacturer’s name and trademark
PE-X EVOH Type “C” reticulated polyethylene with oxygen barrier
Ø 20 x 1.0 External diameter and tube wall thickness
SKZ A441 Certification obtained
Application class Application classes (see the relevant section of this sheet)
Oxygen barrier complying with DIN 4726 The impermeability to oxygen was tested in accordance with standard DIN 4726
XX00X - (--)/(--)/(--) – X.00.0000.00 – 000m – >I< Fraud prevention no., date of production, batch no. and length in metres
3
23
Technical specifications
Fluids carried**In general, all type of fluids are compatible with the material the tube is made of can be carried (see ISO/TR 10358 technical report: Plastics tubes and connections – Combined chemical – resistance classification table).
Dimensions 20 x 2
Thickness of Al layer 0.25
Weight of tube per metre 0.145
* The indications are only provided for quick reference to the product characteristics: there may be other markings different to those in the example. See UNI standard 10954-1 for more information.
** See the applicable laws in force and the above-mentioned standards and decree for more detailed information.
Properties Value Unit of measurement
Max. operating temperature 95 °C
Max. operating pressure 10 bar
Heat transfer coefficient 0.43
Coefficient of linear thermal expansion 0.025
Internal surface roughness of tube 7 ƒÊm
Oxygen diffusion 0 mg/L
Min. manual radius of curvature with tube bender 6 x DU mm
Min. manual radius of curvature with internal tube bending spring 4 x DU mm
Degree of reticulation (check as indicated in UNI 10954-1) 65 %
Resistance to internal pressure (test in accordance with EN 921):
- At 95°C with test pressure P = 20.2 bar .165 hours
- At 95°C with test pressure P = 19.7 bar .1000 hours
Minimum guaranteed resistance to delamination (tensile test in accordance with UNI 10954-1)
.40
Visual and dimensional control of tubeThe check was performed in accordance with UNI 10954-1, using a laser system, and manual spark-tester.
Check for the presence of internal obstructions The product was checked using the company’s in-house control system.
Check for flaws in tube wallDuring the check (performed using the company’s in-house control system), no leaks were found.
Curvature and flaring test Test performed in accordance with UNI 10954-1
Recommendations for storing the productThe tube is supplied in packs that protect it during storage: the outer polyethylene layer of the tube should not be exposed to direct sunlight, as it is not very resistant to UV rays.
Technical specification of the insulation
Insulation thickness mm 6
Thermal conductivity l 0.0369
Resistance to vapour diffusion m 5297
Self-extinguishing Class 1
24
Operating Pressure (bar)
Class** Poper
(bar)
Operating conditions for 50 year use at operating pressure Poper Field of application
1 1049 years at an operating temperature (Toper) of 60°C, 1 year at a max. temperature (Tmax) of 80°C and 100 hours at a malfunction temperature (Tmal) of 95°C
Supply of hot tap water
2 6
25 years at an operating temperature (Toper) of 60°C, 20 years at an operating temperature (Toper) of 40°C, 2.5 years at an operating temperature (Toper) of 20°C, 2.5 years at a max. temperature (Tmax) of 70°C and 100 hours at a malfunction temperature (Tmal) of 100°C
Floor heating and low-temperature radiators
3 6
10 years at an operating temperature (Toper) of 80°C, 25 years at an operating temperature (Toper) of 60°C, 14 years at an operating temperature (Toper) of 20°C, 1 year at a max. temperature (Tmax) of 90°C and 100 hours at a malfunction temperature (Tmal) of 100°C
Heating with high-temperature radiators
Nest is classified in class 1****. Therefore the product can also be used for class 2 and 3 applications.
* This is the minimum radius measured on the plane of the tube axis at the point of curvature; d refers to the external tube diameter.** Classification in applicative classes, in accordance with standard UNI 10954-1 to which we refer for further information.**** The standard indicates that products classified in class 1 can also be used for the uses envisaged in classes 2 and 3.
Delivery l/h
Pre
ssur
e d
rop
daP
a/m
1 d
aPa
= 1
,02
mm
H2O
= =
1 m
bar
Delivery m3/h
1,50 m/s1,25 m/s1,00 m/s0,75 m/s
0,50 m/s
0,25 m/s
3,00 m/s2,50 m/s2,00 m/s
Project temperature °C 10 15 20 30 40 50 60 70 80 90
Pressure loss correction [daPa/m] 1.030 1.000 0.968 0.908 0.859 0.817 0.785 0.763 0.740 0.716
Flow rate correction [L/h] for known power 1.001 1.000 0.999 0.997 0.993 0.989 0.984 0.978 0.972 0.966
Power correction [W] for known flow rate 0.999 1.000 1.001 1.003 1.007 1.011 1.016 1.022 1.029 1.035
Pressure loss in new tubes filled with water at 15°C
The diagram refers to water at a temperature of 15°C.
For other temperatures, the values in the graph should be taken as a reference, calculating the value using factors of correction to allow for the effect of the temperature on the volumetric mass and viscosity of the water.
The correction factors to consider are indicated in the table below:
26
Connections
Ø 20 - Ø 8 double connection (modular)
Quick-fit connection for O 20 x 2 mm multilayer tube and PE-Xa O 8 x 1 tube.Use two no. 02000119 connecting sleeves to join connections together
The following materials are used: � 6.6 Nylon reinforced with 30% fibreglass; resistant to hydrolysis � Stainless steel � Peroxide EPDM � Self-extinguishing plastic polymer body � Ethylene-propylene elastomer seals
Technical specifications:Operating temperature: 90°C in continuous service max. 120°C peakOperating pressure: 20°C 8 bar 40°C 4 bar 80°C 2 barBurst pressure: > 40 bar
Part no. DescriptionOverall dimensions of
manifold (mm) Number of connections
Ø 20 x 2 mmNumber of connections
Ø 8 x 2 mm
02000118 Double Ø 20 - Ø 8 (connection (modular) 125 x 97 x 37 4 2
Connecting sleeve for serial connection of double connections
20 mm double connecting sleeve to connect 2 distribution connections with a 20 mm and 8 mm outlet (02000118)
Technical specifications:Operating temperature: max. 90°C in continuous service max. 120°C peakOperating pressure: 20°C 8 bar 40°C 4 bar 80°C 2 barBurst pressure: > 40 bar
Part no. Description Overall dimensions of manifold (mm)
02000119 Connecting sleeve for serial connection of double connections 90 x Ø 20
Ø 20 - Ø 20 90° elbow connection
Quick-fit 90° elbow connection for multilayer O 20 x 2 mm tube
The following materials are used: � 6.6 Nylon reinforced with 30% fibreglass; resistant to hydrolysis � Stainless steel � Peroxide EPDM � Self-extinguishing plastic polymer body � Ethylene-propylene elastomer seals
Technical specifications:Max. operating temperature: max. 90°C in continuous service max. 120°C peakMax. operating pressure: 20°C 8 bar 40°C 4 bar 80°C 2 bar
Part no. ModelOverall dimensions of
connection (mm)Tube connection (mm)
02000122 Elbow connection 90° Ø 20 - Ø 20 72 x 72 - Ø 35 Ø 20 x 2
4
27
Distribution manifold
Modular distribution manifold
Modular manifold with an external structure reinforced with 30% fibreglass, amorphous material with optimal temperature resistance (max. 100°C in continuous service), pressure, deformation, minimal dilation and temperature variations.
Complete with a pair of brackets, unions, a pair of manual breathers and drain taps with hose adaptor and non-return valve, flow meters with capacity regulation, and lockshields that can be fitted with thermostats.
Part no. DescriptionNumber of lines
(delivery and return) Ø supply line
connection (mm)Distribution line
connection
05000126 1 ¼” 2- line nylon manifold 2 + 2 1 1/4 '' F Quick-fit
05000127 1 ¼” 3- line nylon manifold 3 + 3 1 1/4 '' F Quick-fit
05000128 1 ¼” 4- line nylon manifold 4 + 4 1 1/4 '' F Quick-fit
05000129 1 ¼” 5- line nylon manifold 5 + 5 1 1/4 '' F Quick-fit
05000130 1 ¼” 6- line nylon manifold 6 + 6 1 1/4 '' F Quick-fit
05000131 1 ¼” 7- line nylon manifold 7 + 7 1 1/4 '' F Quick-fit
05000132 1 ¼” 8- line nylon manifold 8 + 8 1 1/4 '' F Quick-fit
05000133 1 ¼” 9- line nylon manifold 9 + 9 1 1/4 '' F Quick-fit
05000134 1 ¼” 10- line nylon manifold 10 + 10 1 1/4 '' F Quick-fit
05000135 1 ¼ 11- line nylon manifold 11 + 11 1 1/4 '' F Quick-fit
05000136 1 ¼” 12- line nylon manifold 12 + 12 1 1/4 '' F Quick-fit
05000144 1 ¼” 13- line nylon manifold 13 + 13 1 1/4 '' F Quick-fit
05000145 1 ¼” 14- line nylon manifold 14 + 14 1 1/4 '' F Quick-fit
05000146 1 ¼” 15- line nylon manifold 15 + 15 1 1/4 '' F Quick-fit
05000147 1 ¼” 16- line nylon manifold 16 + 16 1 1/4 '' F Quick-fit
Distribution manifolds are used for controlling and regulating the flow of hot and / or cold water to the radiant panels.
5
28
Zehnder Ct-Box sub-units
The Zehnder Ct-Box sub-units are pumps which are connected directly to the distribution manifolds.
This range of sub-units has been developed through the experience of numerous installers which has been incorporated into the design of a number of sizes just right for each floor or ceiling-mounted radiant system.
The system is easy to install and pre-packed in order to allow a customised installation with direct connections to the distribution manifolds supplying the radiant elements.
The following tables can be used to quickly find the most suitable central control unit for the room size to be heated/cooled with a floor or ceiling-mounted system. The number of manifold lines installed in a floor system or the number of coils in a ceiling system should also be taken into consideration.
Each Zehnder Ct-Box has on/off valves on both the primary and secondary circuits, a variable or fixed capacity pump, a series of safety devices (thermometers, manometers, delivery sensor, air bleed sensor, etc.) and a mixer valve.
The operating graphs of the pumps used and the electrical specifications of the equipment installed have also been included.
Each Zehnder Ct-Box is ideal for floor or ceiling-mounted heating and cooling systems and is supplied with:
� 2 primary hydraulic compensator delivery/return on/off ball valves
� 2 secondary delivery/return on/off ball valves � 1 system pump � 2 primary hydraulic compensator delivery/return thermometers
� 2 secondary delivery/return thermometers � 1 manometer (0-6 bar) � 1 delivery sensor well � 1 type PT1000 delivery sensor � 1 mixer valve - 0-10 V (optional) � 1 automatic 1” air bleed with non-return valve � Module fixing brackets � Thermal insulation
6
29
Zehnder Ct-Box sub-unit quick selection table
m2 of project
Number of Zehnder ComfoDew dehumidification units installed within the project No. of coils*0 1 2 3 4
30 1835 2040 2345 2650 2955 3260 3565 3870 4175 4480 4785 5090 5395 55100 58105 61110 64115 67120 70125 73130 76135 79140 82145 85150 88155 90160 93165 96170 99175 102180 105185 108190 111195 114200 117205 120210 123215 125220 128225 131230 134235 137240 140245 143250 146255 149260 152265 155270 158275 160280
Zehnd
er Ct-B
ox 1200
Zehnd
er Ct-B
ox
1200
Zehnd
er Ct-B
ox 1200
Zehnd
er Ct-B
ox 2000
Zehnd
er Ct-B
ox 2000
Zehnd
er Ct-B
ox 2000
Zehnd
er Ct-B
ox 2000
Zehnd
er Ct-B
ox 2000
Zehnd
er Ct-B
ox 3000
Zehnd
er Ct-B
ox 3000
Zehnd
er Ct-B
ox 3000
Zehnd
er Ct-B
ox 3000
Zehnd
er Ct-B
ox 3000
Zehnd
er Ct-B
ox 4000
Zehnd
er Ct-B
ox 4000
Zehnd
er Ct-B
ox 4000
Zehnd
er Ct-B
ox 4000
Zehnd
er Ct-B
ox 4000
The table has been drawn up based on the following considerations:
� a Dew dehumidifier bank water flow rate equal to 240 L/h
� a ceiling system with Zehnder NIC 300 panels (1.2 m2 - 25 L/h per coil) and a radiant incidence of 70%.
* NIC 150 and NIC 300 panels have 1 coil; NIC 600 has 2 coils
30
Technical specifications for Zehnder Ct-Box sub-units
Model Zehnder Ct-Box 1200 sub-unit Zehnder Ct-Box 2000 sub-unit Zehnder Ct-Box 3000 sub-unit Zehnder Ct-Box 4000 sub-unit
Flow rate 1200 l/h 2000 l/h 3000 l/h 4000 l/h
Pump model DAB VA 65/180 DAB VA 65/180 DAB VA 56/180 DAB VA 80/180 M
Input 50 Hz 1 x 230 V~ 1 x 230 V~ 1 x 230 V~ 1 x 230 V~
Pitch mm 180 180 180 180
Connections 1” F 1” G 1 1/2” G 1 1/2” G
Min. head pressure t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5
Max. capacity 1.5 m3/h 2 m3/h 3 m3/h 4 m3/h
Max. discharge head 4 m H2O 4.2 m H2O 5.8 m H2O 7 m H2O
Max. press. loss 1.5 m H2O 1.5 m H2O 3.2 m H2O 4.2 m H2O
Mixer valve SAUTER BUN 015 F300 / Kvs 5 m3/h / 1” connections SAUTER BUN 015 F300 / Kvs 4 m3/h / 1” connections SAUTER BUN 020 F300 / Kvs 6.3 m3/h / 1 1/4˝ connections SAUTER BUN 025 F300 / Kvs 10 m3/h / 1 1/2˝ connections
Servomotor SAUTER AXM 117 / 0-10 V / 24 VAC input SAUTER AXM 117 / 0-10 V / 24 VAC input SAUTER AXM 105 S F132 / 0-10 V / 24 VAC input SAUTER AVM 104 S F132 / 0-10 V / 24 VAC input
Primary connections Left side Left side Left side Left side
Secondary connections
Right side Lower side Lower side Lower side
Ove
rall
spac
e re
qui
red
Height 500 mm 500 mm 710 mm 780 mm
Width 600 mm 600 mm 700 mm 770 mm
Depth 130 mm 130 mm 150 mm 150 mm
Dry weight 10.9 kg 10.6 kg 17.1 kg 23 kg
Water volume litres 2 l 2.5 l 5 l 8.3 l
Ball valves 1" 1" 1" 1"
Thermometers 0 - 60°C 0 - 60°C 0 - 60°C 0 - 60°C
Manometer 0 - 6 bar 0 - 6 bar 0 - 6 bar 0 - 6 bar
Max. pressure 6 bar 6 bar 6 bar 6 bar
* m.w.c. = meters of water column
31
Technical specifications for Zehnder Ct-Box sub-units
Model Zehnder Ct-Box 1200 sub-unit Zehnder Ct-Box 2000 sub-unit Zehnder Ct-Box 3000 sub-unit Zehnder Ct-Box 4000 sub-unit
Flow rate 1200 l/h 2000 l/h 3000 l/h 4000 l/h
Pump model DAB VA 65/180 DAB VA 65/180 DAB VA 56/180 DAB VA 80/180 M
Input 50 Hz 1 x 230 V~ 1 x 230 V~ 1 x 230 V~ 1 x 230 V~
Pitch mm 180 180 180 180
Connections 1” F 1” G 1 1/2” G 1 1/2” G
Min. head pressure t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5 t° + 90°C m.w.c.* 2.5
Max. capacity 1.5 m3/h 2 m3/h 3 m3/h 4 m3/h
Max. discharge head 4 m H2O 4.2 m H2O 5.8 m H2O 7 m H2O
Max. press. loss 1.5 m H2O 1.5 m H2O 3.2 m H2O 4.2 m H2O
Mixer valve SAUTER BUN 015 F300 / Kvs 5 m3/h / 1” connections SAUTER BUN 015 F300 / Kvs 4 m3/h / 1” connections SAUTER BUN 020 F300 / Kvs 6.3 m3/h / 1 1/4˝ connections SAUTER BUN 025 F300 / Kvs 10 m3/h / 1 1/2˝ connections
Servomotor SAUTER AXM 117 / 0-10 V / 24 VAC input SAUTER AXM 117 / 0-10 V / 24 VAC input SAUTER AXM 105 S F132 / 0-10 V / 24 VAC input SAUTER AVM 104 S F132 / 0-10 V / 24 VAC input
Primary connections Left side Left side Left side Left side
Secondary connections
Right side Lower side Lower side Lower side
Ove
rall
spac
e re
qui
red
Height 500 mm 500 mm 710 mm 780 mm
Width 600 mm 600 mm 700 mm 770 mm
Depth 130 mm 130 mm 150 mm 150 mm
Dry weight 10.9 kg 10.6 kg 17.1 kg 23 kg
Water volume litres 2 l 2.5 l 5 l 8.3 l
Ball valves 1" 1" 1" 1"
Thermometers 0 - 60°C 0 - 60°C 0 - 60°C 0 - 60°C
Manometer 0 - 6 bar 0 - 6 bar 0 - 6 bar 0 - 6 bar
Max. pressure 6 bar 6 bar 6 bar 6 bar
* m.w.c. = meters of water column
32
Zehnder Chronosonda
Zehnder has designed and built these unique room controls and sensors to measure temperature and humidity. The result is an essential instrument for managing radiant systems where the room temperature and humidity must be measured to calculate the dew point.
With the end user in mind, simple, easy-to-understand icons have been used to make setting the parameters and displaying the zone states as user-friendly as possible.
The 4 buttons and the display allow the user to set the room temperature and relative humidity directly; the system can be switched off, and 5 timer programmes, along with the zone operating mode, frost protection and temperature reduction can be set directly from inside the room.
The room controls are particularly easy to install and connect. They can be installed anywhere in homes, hotel rooms, offices or hospitals, etc.
Dimensions: H89 x W130 x D46mm
Functional characteristics: � Backlit LCD display � 4 buttons � Room temperature display � Room humidity display � Room temperature settings � 5 general timer programmes � Timer function programme selection � Zone On/Off � Manual/timer prog. temperature function � Manual/timer prog. dehumidifier function (CFTH BUS model)
� Temperature reduction for maintenance (CFTH model)
� Temperature set limits (e.g.: +/- 3°C) � Full keypad lock � Menu lock � Dew point calculation (CFTH model) � Built-in relay for dehumidifier control (CFTH model) � Built-in relay for temperature control (CFTH model)
7
Zehnder Chronosonda and Zehnder control BUS unit provide a complete centrally controlled system.
33
Zehnder room controls
Zehnder CFTHStand alone unit for independent control of each zone
Zehnder CFTH BUSUnits for multiple zones and controlled centrally
The Zehnder CFTH controller, for effective handling of heating and cooling in winter and summer, as well as for dehumidification. The temperature can be managed by a timer programme with reduction periods, or in manual mode. The Zehnder CFTH is the best solution for managing your radiant cooling system, thanks to the continuous dew point calculation and the dehumidifier control based on absolute humidity.
It is equipped with a backlit display to guarantee visibility even in difficult conditions. Installation is fast and easy thanks to the compact dimensions of the unit, which can be installed in standard electrical boxes. The user can set a variety of parameters using the 4 buttons and the display.
The Zehnder CFTH BUS control sensor measures the temperature and relative humidity in the room where it is installed. The control sensor has a display and buttons so the user can set the desired temperature and the functional mode for the zone and its dehumidifier.
The room control sensor calculates the dew point on the basis of the temperature and humidity in the room and then controls the electrothermal actuator heads and the dehumidifier to guarantee the desired conditions of comfort while preventing condensation.
Technical specifications:
� The Zehnder CFTH BUS control sensor is designed to function only with Zehnder Control BUS 10-1w or 90-4 regulators (see section 8 )
� The sensor must be powered with 12 VAC (alternating current)
� The room sensors and dehumidifiers can be connected to the electronic regulator using an RS-485 bus communications cable
� Type “503” box
� Sensor standard colour: White RAL 9010
34
Zehnder Control BUS units
The central control unit is the efficient heart of the Zehnder comfort project. The system gives you continuous control over the dew point thanks to a series of CFTH BUS sensors (see section 7 ) reading the room temperature and humidity. The control unit regulates the water delivery temperature on the basis of the readings, so the surface temperature of the radiant system remains above the critical level.
The control unit coordinates and monitors various devices in the system, allowing you to manage:
� the temperatures in the various zones
� the humidity levels in the various zones
� the dehumidifiers
� the chillers/heat pumps
� the heat regenerators
� the mixer valve
� the system pumps
� the boiler
� the controls and safety devices
� the delivery temperature readings
The monitoring produces a graphic representation of the whole system, and all the system variables can be managed. Monitoring may be done using a local network or from a remote station with an Internet connection via modem. The control sensors in each room are connected directly to the heart of the system, providing full user interaction to set the temperature, humidity and timer directly from the control sensor.
Up to 90 zones can be controlled thanks to the room sensors connected to the central control unit.
Use the table below to select which central control unit best suits the projects requirements.
8
Characteristics of the Zehnder Control BUS 10-1 and 90-4 units
Controllable by the central control unit Zehnder Control 10-1 Zehnder Control 90-4
No. of zones Max 10 Max 90
No. of dehumidifiers Max 3 Max 50
No. of mixed lines 1 Max 4
Delivery sensor 1 Max 4
External sensor 1 1
Low temp. pump Yes Yes
Monitoring - Yes
Remote touch screen - Yes
High temp. pump Yes Yes
Machine pump (not misc.) - Yes
Boiler Yes Yes
Chiller Yes Yes
Heat pump Yes Yes
HP – Boiler sequence Yes Yes
HP – Boiler integration Yes Yes
Winter climate curve (only if external sensor is installed) Yes Yes
Summer climate curve - Yes
Dew point Yes Yes
35
Zone 1 Zone 5, etc.
Zone 4
Zone 3
Zone 2
Zehnder central control units
Zehnder Control BUS 10-1 Zehnder Control BUS 90-4
The pre-wired electrical board is supplied with the following components:
� 220 V disconnecting switch - (S2.1)
� 220 V - 12 VAC - 24 VAC transformer - ()
� 220 V fuse holder - (F2.1)
� 24 VAC fuse holder - (F2.2)
� 12 VDC fuse holder - (F2.3)
� Pump command relay
� Low-temperature pump protection fuse - (F 8.1)
Cover box also available
Dimensions: H370 x W450 x D80mm
The pre-wired electrical board is supplied with the following components:
� 220 V disconnecting switch - (S2.1) � 220 V - 12 VAC - 24 VAC transformer - () � 220 V - 24 VDC power pack � 220 V fuse holder - (F2.1) � 24 VAC fuse holder - (F2.2) � 12 VDC fuse holder - (F2.3) � 24 VAC fuse holder - (F2.4) � Summer/winter pump command relay � Line 1 low-temperature pump protection fuse - (F 8.1) � Line 2 low-temperature pump protection fuse - (F 8.2) � Line 3 low-temperature pump protection fuse - (F 8.3) � Line 4 low-temperature pump protection fuse - (F 8.4) � High-temperature pump protection fuse - (F 8.5) � Machine line pump protection fuse - (F 8.6)
Cover box also available
Dimensions: H570 x W370 x D10mm
36
Zehnder Dew dehumidification units
Zehnder Dew dehumidifiers have been designed, built and optimised for installation in ceiling, wall and floor radiant conditioning systems controlled by Zehnder Control units.
For use with boilers and chillers, Zehnder Dew 200, 350 and 500 dehumidifiers are dimensioned to dehumidify the home or work environment in general: small and medium-sized storerooms and offices.
The Zehnder Dew 200, Zehnder Dew 350 and Zehnder Dew 500 are designed for installation in ceilings. The use of dedicated ducting for air distribution is intended.
For use with heat pumps, Zehnder has designed and built the Zehnder ComfoDew 200, Zehnder ComfoDew 350 and Zehnder ComfoDew 500 dehumidifier range specifically for installation with high-efficiency dual flow heat regenerators. This optimises plant
engineering in terms of comfort, energy savings and air quality. Ventilation ducting is used to control the level of humidity in all rooms, guaranteeing maximum performance of the radiant system.
Specific accessories, the Zehnder Plenum, make coupling and connecting the dehumidifiers to the heat pump easy.
The Zehnder Dew 700 dehumidifier is specifically designed for medium-large residential applications, shops and the tertiary sector. It is not suitable for industrial applications
9
VISTA POSTERIORE Zehnder Dew 700 VISTA LATERALE LATO ATTACCHI Zehnder Dew 700
VISTA IN PIANTA Zehnder Dew 700VISTA ASSONOMETRICA Zehnder Dew 700
Zehnder Dew 200
Zehnder ComfoDew 200
Zehnder Dew 350
Zehnder ComfoDew 350
Zehnder Dew 500
Zehnder ComfoDew 500
Zehnder Dew 700
VISTA POSTERIORE Zehnder Dew 700 VISTA LATERALE LATO ATTACCHI Zehnder Dew 700
VISTA IN PIANTA Zehnder Dew 700VISTA ASSONOMETRICA Zehnder Dew 700
VISTA POSTERIORE Zehnder Dew 700 VISTA LATERALE LATO ATTACCHI Zehnder Dew 700
VISTA IN PIANTA Zehnder Dew 700VISTA ASSONOMETRICA Zehnder Dew 700
VISTA POSTERIORE Zehnder Dew 700 VISTA LATERALE LATO ATTACCHI Zehnder Dew 700
VISTA IN PIANTA Zehnder Dew 700VISTA ASSONOMETRICA Zehnder Dew 700
245m
m
705mm
334m
m
286m
m
262m
m
726mm796mm 880mm
614mm665mm613mm550mm
37
Technical specifications for Zehnder Dew and Zehnder ComfoDew dehumidification units
ModelZehnder Dew 200
ComfoDew 200
Zehnder Dew 350
ComfoDew 350
Zehnder Dew 500
ComfoDew 500
Zehnder ComfoDew 150
Approximate max. air volume processed [m3]
200 350 500 150
No. of persons in room 4 - 6 10 15 3 - 4
Condensation capacity (at 25°C – 65% R.H.) [L/day]
24 38.3 60.1 19
Operating temperature limits [°C] 18°C / +32 18°C / +32 18°C / +32 18°C / +35
Relative humidity [% R.H] 50/85 50/85 50/85 50/85
Air flow [m3/h] 200 350 500 150
Lift /drop pressure at nominal flow rate [Pa]
60/50 60/50 60/50 50
Bank water flow rate [L/h] ≥ 240 ≥ 350 ≥ 500 ≥ 180
Bank pressure loss [kPa] 15.68 - 32.93 12 16 15
Thermal power absorb. of isothermal dehumidification ** [W]
1235 1800 2745 1060
Thermal power absorb of banks on dehumidification and integration ** [W]
1710 2500 3995 1555
R134a refrigerant gas charge [g] 230 580 680 190
Max. refrigerant pressure [bar] 14 14 14 14
Ele
ctri
cal
spec
ifica
tio
ns Input voltage [V] 230 V, 50 Hz 230 V, 50 Hz 230 V, 50 Hz 230 V, 50 Hz
Current consumption [A] 1.9 1.3 2.1 1.9 2.7 1.16
Power consumption [W] 300 265 460 400 550 240
Noise level [dB(A)] < 40 < 40 < 40 < 40
Dim
ensi
ons Height 245 mm 262 mm 286 mm 267 mm
Width 705 mm 726 mm 796 mm 670 mm
Depth 550 mm 613 mm 665 mm 564 mm
Weight [kg] 32 32 54.2 30
All the dehumidifiers are designed to be installed at ceiling horizontally or in a false ceiling and cannot be installed outdoors.
** Note: 26°C and 84% - Water temp. 15°C
Each Zehnder dehumidification unit has the following features:
� Pre-processing heat exchanger battery, finned copper pipe evaporator, water cooled condenser, post-processing water heating heat exchanger
battery, all with hydrophilic treatment
� Galvanised sheet steel frame
� Electrical board with Phase-Neutral connection enabled by Zehnder Control
� 1” F connections for connecting adduction lines to radiant panel plant manifold
� Centrifugal fan (4 selectable speeds)
� Alternating air-tight R134a compressor
� Compressor compartment soundproofed with polyethylene foam sheet and lead
� Condensate drain with 14 mm hose connection
� Stainless steel condensate tray
Note: The Zehnder ComfoDew models do not have the centrifugal fan
For full technical specifications please contact the sales office.
38
Plenum for Zehnder ComfoDew dehumidifiers
Plenum made of insulated, galvanised sheet steel to use with Zehnder ComfoDew dehumidifiers with circular connection for connecting to heat recovery / heat pump unit.
Part no. Description
06000096 Zehnder ComfoDew 200 DN 125 Plenum
06000091 Zehnder ComfoDew 200 DN 160 Plenum
06000097 Zehnder ComfoDew 350 DN 160 Plenum
06000092 Zehnder ComfoDew 500 DN 180 Plenum
06000102 Zehnder ComfoDew 200 DN 150 Plenum
06000101 Zehnder ComfoDew 350 DN 150 Plenum
Need help with the design...?
Let us design your system for you:
Our in-house team would be more than pleased to help
design your system, without cost, and visit site if required.
39
Zehnder Comfosystems10Zehnder Nestsystems happily work alongside a traditional boiler and chiller unit in addition Zehnder Nestsystems also works perfectly with alternative energy sources particularly air or ground source heat pumps and heat recovery and ventilation units.
At Zehnder, we are able to provide a full heat recovery and ventilation solution including the heat recovery unit, the ducting and grilles, the controllers and a ground source heat exchanger or enhanced cooling option which fit together logically and easily.
Zehnder has a comprehensive range of products which can be tailored to meet the requirements of a broad spectrum of dwellings from smart, urban apartments to large, luxury dwellings.
Please contact us for further details or visit the website
www.zehnder.co.uk/comfosystems
Zehnder CA160 Zehnder CA200 Zehnder CA350 Zehnder CA550
40Zehnder – always around you
Fresh Air – a product range with a long tradition at Zehnder. Zehnder Comfosystems provides products and solutions for comfortable indoor ventilation with heat recovery for houses and apartments, for new builds and for renovation projects.
■ Comfortable indoor ventilation
■ Compact energy station with integrated ventilation unit
Zehnder Clean Air Solutions provide Clean Air in buildings particularly prone to dust. In residential applications, the comfortable indoor ventilation provided by Zehnder Comfosystems filters external pollutants out of the air.
■ Comfortable indoor ventilation with integrated fresh-air filter
■ Compact energy unit with integrated fresh-air filter
■ Systems for clean air
At Zehnder, heating doesn’t just come in the form of designer radia-tors. We offer solutions in all shapes and sizes, from radiant ceiling panels to heat pumps with integrated venti-lation unit.
■ Designer radiators
■ Compact energy station with integrated heat pump
■ Heating and cooling ceiling systems
■ Comfortable indoor ventilation with heat recovery
■ Radiant ceiling systems
Zehnder also offers sophisti-cated solutions for indoor cooling. These range from cooling ceiling systems to comfortable indoor ventilation with a supply of pre-cooled fresh air.
■ Heating and cooling ceiling systems
■ Compact energy station with heat pump and brine pipe
■ Comfortable indoor ventilation with geothermal heat exchanger for fresh air pre-tempering
■ Radiant ceiling systems
Heating, cooling, fresh and clean air: at Zehnder, you will find everything you need to create a comfortable, healthy and energy-efficient indoor climate. Zehnder’s wide and clearly structured portfolio can offer the right product for any project, be it private, public or commercial, new build or refurbishment. And where service is concerned, you’ll find that Zehnder is “always around you”.
Zehnder – everything you need to create a comfortable, healthy and energy-efficient indoor climate
Zehnder ComfosystemsZehnder designer radiators, Zehnder Nestsystems
Zehnder heating and cooling ceiling systems, Zehnder Nestsystems Zehnder Clean Air Solutions
Heating
Cooling
Fresh Air
Clean Air
Most innovative brand in the category heating & climate
Z_MASTER_V0513_ALL_CrossSelling_en.indd 3-4 30.08.2013 11:05:00
41Zehnder – always around you
Fresh Air – a product range with a long tradition at Zehnder. Zehnder Comfosystems provides products and solutions for comfortable indoor ventilation with heat recovery for houses and apartments, for new builds and for renovation projects.
■ Comfortable indoor ventilation
■ Compact energy station with integrated ventilation unit
Zehnder Clean Air Solutions provide Clean Air in buildings particularly prone to dust. In residential applications, the comfortable indoor ventilation provided by Zehnder Comfosystems filters external pollutants out of the air.
■ Comfortable indoor ventilation with integrated fresh-air filter
■ Compact energy unit with integrated fresh-air filter
■ Systems for clean air
At Zehnder, heating doesn’t just come in the form of designer radia-tors. We offer solutions in all shapes and sizes, from radiant ceiling panels to heat pumps with integrated venti-lation unit.
■ Designer radiators
■ Compact energy station with integrated heat pump
■ Heating and cooling ceiling systems
■ Comfortable indoor ventilation with heat recovery
■ Radiant ceiling systems
Zehnder also offers sophisti-cated solutions for indoor cooling. These range from cooling ceiling systems to comfortable indoor ventilation with a supply of pre-cooled fresh air.
■ Heating and cooling ceiling systems
■ Compact energy station with heat pump and brine pipe
■ Comfortable indoor ventilation with geothermal heat exchanger for fresh air pre-tempering
■ Radiant ceiling systems
Heating, cooling, fresh and clean air: at Zehnder, you will find everything you need to create a comfortable, healthy and energy-efficient indoor climate. Zehnder’s wide and clearly structured portfolio can offer the right product for any project, be it private, public or commercial, new build or refurbishment. And where service is concerned, you’ll find that Zehnder is “always around you”.
Zehnder – everything you need to create a comfortable, healthy and energy-efficient indoor climate
Zehnder ComfosystemsZehnder designer radiators, Zehnder Nestsystems
Zehnder heating and cooling ceiling systems, Zehnder Nestsystems Zehnder Clean Air Solutions
Heating
Cooling
Fresh Air
Clean Air
Most innovative brand in the category heating & climate
Z_MASTER_V0513_ALL_CrossSelling_en.indd 3-4 30.08.2013 11:05:00
42
From concept to actualisation...
Featured product: Zehnder Terraline
...with Zehnder BIM components
Download free of charge at www.zehnder.co.uk/bim
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