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Air cooled water chillers

Air cooled motocondensing unit

ALZ HA 011.1 033.2

ALP HA 011.1 033.2

Cooling capacity from 38,5 to 104,9 kW

50Hz Refrigerant: HFC 407C

Scroll Compressors

305 B 00/09 B

Date:September 2000

Supersedes:none

Product Manual

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New McQuay Air cooled chillers and motocondensing unit ALZ/ALP HA

McQuay International introduces their newest air cooled chillers ALZ HA equipped with scroll compressors andelectronic control system. McQuay have once again succeded in developing a high quality product withextraordinary performance which is able to satisfy HVAC applications.

McQuay units are completely factory assembled, piped, wired and charged with refrigerant and shipped ready for

the installation.Each unit consists of scroll compressors, condenser coils with independent subcooler circuits, multiple propellertype direct drive condenser fans with independent fan motors, heavy-gauge weatherproof casing and weatherproofelectrical control centre containing all necessary and operating controls and motor starting equipment.

ALZ / ALP HA units are high thermodynamic engineering products, studied with high accuracy in balancingcompressors, condensers and evaporators in order to offer high performances and wide safety margins. Thechoose of the materials and the equipments adopted for the products has been made without any compromises,taking care of quality and long life purposes. The products meet ISO 9001 requirements, an assurance, beyondany doubts, of the high producing standards followed by McQuay.

Code requirementsAll units are designed and manufactured in accordance with applicable selections of the following which areequivalent to American Air-conditioning industry applicable codes:

Rating of chillers: UNI 9018.

Construction of pressure vessel: TUV Standards (optional).

Electrical codes: IEC 204-1 CEI 44-5 Elect. & Safety Codes.

Safety Codes: CEI-EN 602041 Codes.

Manufacturing Quality Stds: ISO 9001.

Highly flexible designThe ALZ / ALP HA units are available in sizes covering a range from 38,5 to 104,9 kW nominal cooling capacity.Availability of many accessories, and the applications of high tech control and safety devices, give to theseproducts high flexibility for their installation in commercial, residential and industrial environments.

RefrigerantAs the HCFC phase out will occur more quickly than currently legislated, the designers, owners and operatorsshould only evaluate equipment using chlorine free refrigerants. ALZ / ALP HA units are supplied with ecologicalrefrigerant HFC 407C. Studied and used by McQuay for several years, it offers the same garancies ofperformance, costs and reliability of refrigerant HCFC 22.

Low installation costsThe complete assembly of the units and fuction testing at the factory reduces the cost of installation on site. A rigidsteel base distributes the weight of the unit to the support points and allows simple installation by an easy accessto the lifting points. The units are designed with a single point 400/3/50 + NEUTRAL. The ALZ HA units can alsoinclude a pumping set consisting of one or more water circulation pumps and buffer tank.

Low maintenence costsThe microprocessor safety and control system allows the trouble shooting of any type of functional anomaly,enabling simpler, safer and timely intervention by the unit maintenance personnel. The oil heater on eachcompressor and a complete set of controls and safety devices protect the unit from abnormal operating conditions.The design of the ALZ HA unit, with two independent refrigerant circuits, increases the redudancy of the unit andallows maintenance while the other circuit is still running.

Factory testingEach unit is pressure tested, vacuum tested, evacuated and charged with refrigerant requested. It is then tested atthe factorys test bench under the design conditions specified by the customer. Upon request, a second series oftests can be carried out witnessed by the customer. Before shipment, each unit is re-checked for pressure andrefrigerant charge control.

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General characteristics

Cabinet and structureThe cabinet is made of galvanized steel sheet and painted to provide a high resistance to corrosion. The unit baseframe has holes to lift the unit with ropes for an easy installation. The weight is uniformly distributed along theprofiles of the base and this facilitates the arrangement of the units bases and the support structures. Theelectrical and control equipment is located inside a panel which can be accessed by key locked doors completewith door interlocking on the power cabinet.

The unit cabinet can be sound insulated (as an option) in order to reduce the noise of the compressors.

Scroll compressors

The scroll compressors achieve a high volumetric efficiency, due to constant contact with the sides of the scroll

spirals and the total absence of discharge and suction valves. This compressor is not only extremely reliable

thanks to the reduced number of moving parts, but has an exceptionally low noise level because of the absence of

suction and discharge valves and hence of the reduced pulsations of the discharge gas. The reduction in moving

parts means a very low level of vibration. Each compressor is equipped with a check valve on the discharge to

mantain the pump-down condition and hence avoid the migration of the refrigerating gas from the condenser to the

evaporator.

Evaporator (only ALZ HA units)The evaporator is a compact, efficient, dual circuit plate to plate type heat exchanger consisting of stainless steel

brazed plates.

The evaporator is wrapped with closed cell heat insulation and equipped with an heater for protection against

freezing down to 29C.

Condenser coils

ALZ HA condenser coils are constructed with internally enhanced seamless copper tubes arranged in a staggered

row pattern and mechanically expanded into McQuay lanced and rippled aluminium condenser fins with full fin

collars.

Condenser coil fansThe condenser fans are of the axial helical type with wing-profile blades to achieve a better performance. The

direct coupling with the electrical motor eliminates any problems as regards the application of transmission devices

and reduces the vibrations caused by the functioning. The motors are supplied as standard with IP54 protection

and are of the mono-phase external rotor type; they are protected against overload and short circuits by circuit

breakers located inside the electrical control panel.

Electrical control panel and control devices

The electrical components for both the power and the control are split into two sections on the main panel. The

panel is manufactured to ensure protection in all weather conditions (IP 54). The power panel is fitted with a door

interlocked mains isolator to prevent access. The electrical control panel complies with IEC204-1 safety norms.

The power section includes: compressors contactors and fuses, fans contactors and fuses. Additional space isprovided for the installation of the various optional accessories provided to enhance the capabilities of the ALZ HA

units.

The control section includes the microprocessor regulator of the water temperature (ALZ HA) which carries out the

following functions:

- access password to prevent unauthorised access

- water temperature control

- regulation of temperature set points

- start-up sequence delay device

- compressor on-off control

- fan on-off control

- antifreeze control

- antifreeze heater functioning

- general alarm

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- differential pressure switch or pump failure alarm (opt.)

The multifunctional microprocessor control device has contacts for remote on/off control and remote signal of

general failure.

On request, remote programming radio-control and remote PC board are available as option.

Refrigerant circuitThe ALZ HA units are equipped with a complete refrigerant charge. The ALP HA units are equipped only by a

holding charge to keep the circuit in pression and to avoid moisture infiltration.The ALZ HA circuits consist of insulated copper pipes on the suction line and is complete with suction shut-off

valves, filter driers, moisture indicators, liquid sight glass, thermostatic expansion valves and drain valves.

ALP HA motocondensing units are not equipped by liquid and suction lines. Customer will have to provide:

antivibration isolators, filter driers, solenoid valves, moisture indicators, thermostatic expansion valves.

Accessories and Options

100% total heat recovery (R)(only for ALZ HA units) - Produced with plate heat exchangers to produce hot water

up to +50C. The heat exchangers are mounted on the refrigerant circuits parallel to the condenser coils to remove

all the heat rejection.Desuperheaters (D) (only for ALZ HA units) - Produced with plate heat exchangers installed between the

compressor discharge and the condenser coil. These allow hot water to be produced up to a maximum

temperature of +55C.

Compressor thermal overload relays Safety devices against compressor motor overload.

Fans thermal overload relays Safety devices against fans motor overload.

Condenser power factor correction- Installed on the electrical control panel to ensure the conformance to the

local rules.

Condenser coil guards- Metal protection guards fixed on all the external surface of the condenser coils.

Cu-Cu condensing coils -To give better protection against corrosion by aggressive environments.

Alucoat condensing coils- Fins are protected by a special epoxy paint with a high resistance to corrosion.

Suction line shut off valve Standard.Discharge line shut off valve Standard.

Inertial tank (factory unit mounted)- Cooled water buffer tank to give to the hydraulic plant inertia and reduce

excessive compressor starts and stops. The tank, supplied with one or two pumps has a 180 l capacity. The tank

is complete with: automatic filling module, manual vent valve, drain tap and 150 W antifreeze heater. The tank is

heat insulated with 20-mm thick PU and wrapped with PVC.

Water circulation pump (factory unit mounted) - Pump unit, assembled and wired, consists of a water

circulation pump (max. working pressure 6 bar) complete with safety valve and 8 litre expansion tank. The pump

motor is protected by a circuit breaker.

Two water circulation pumps (factory unit mounted) - Pump unit, assembled and wired, consisting of two

water circulation pumps (max. working pressure 6 bars) complete with shut off valve, check valves, safety valve

and 8 litre expansion tank. The pump motors are protected by circuit breakers and controlled by a two-position

switch.

NOTE: one and two pumps options always include inertial tank.

Microprocessor program remote infrared-control Infrared-control to remote program data.

Wooden box packing- Self-supporting wooden box internally insulated and suitable for shipment by sea.

Open Cage packing - Protection with polythene and wooden cage for transport and protection before the

installation.

Rubber type antivibration mounts - Supplied separately, these will be positioned under the base of the unit

during installation. Ideal to reduce the vibrations when the unit is floor mounted.

Spring type antivibration mounts - Supplied separately, these will be positioned under the base of the unit

during installation. Ideal for dampening vibrations for installation on roofs and metallic structures.

Low noise version For this version internal side of the steel cabinet is covered by soundproof material to allow

compressor sound insulation.

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Table 1 - Operating limitsEntering evaporatorwater temperature

Leaving evap. watertemp.(without glycol)

Evaporator water t Ambient temperatureALZ

Min (C) Max (C) Min (C) Max (C) Min (C) Max (C) Min (C) Max (C)

011.1 8 20 4 10 4 8 15 50

013.1 8 20 4 10 4 8 15 49

017.1 8 20 4 10 4 8 14 49

020.1 8 20 4 10 4 8 12 48

022.2 8 20 4 10 4 8 15 50025.2 8 20 4 10 4 8 13 48

029.2 8 15 4 10 4 8 12 47

033.2 8 15 4 10 4 8 10 47

Table 2 - Altitude correction factorElevation above sea level (m) 0 300 600 900 1200 1500 1800

Barometric pressure (mbar) 1013 977 942 908 875 843 812

Cooling capacity correction factor 1,000 0,991 0,981 0,972 0,962 0,953 0,943

Table 3 - Ethylene glycol and low ambient temperature correction factors

Air ambient temperature C -3 -8 -15 -23 -35% of ethylene glycol correction factor 10 20 30 40 50

Cooling capacity correction factor 0,986 0,980 0,973 0,966 0,960

Flow rate correction factor 1,023 1,054 1,092 1,140 1,200

Water pressure drops correction factor 1,061 1,114 1,190 1,244 1,310

Table 4 - Low temperature operation performance factorsEthylene glycol/water leaving temperature C 2 0 -2 -6 -8

Cooling capacity correction factor 0,942 0.783 0,725 0,615 0,562

Power input compressors correction factor 0,950 0,934 0,918 0,870 0,845

Min % of ethylene glycol 10 20 20 30 30

Max air ambient temperature C 40 40 38 34 32

Table 5 - Fouling factor

Fouling factorm

2C / kW

Cooling capacitycorrection factor

0,044 1,000

0,132 0,986

0,308 0,939

Water content in cooling circuits

The cooled water distribution circuits should have a minimum water content to avoid excessive compressors startand stop.

In fact, each time the compressor starts up, an excessive quantity of oil goes from the compressors sump and

simultaneously there is a rise in the temperature of the compressor motors stator due to the inrush current during

the start-up. To prevent damage to the compressors, McQuay has envisaged the application of a device to limit

frequent stops and restarts.

During the span of one hour there will be no more than 6 starts of the compressor. The plant side should therefore

ensure that the overall water content allows a more constant functioning of the unit and consequently greater

environmental comfort. The minimum installation water content envisaged should be calculated with a certain

approximation using this formula:

(1) Q =25

Pxp

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where:

Q = minimum content of the plant expressed in litres.

P = cooling capacity of the plant expressed in W

p = minimum unloading capacity percentage

For a more accurate determination of the quantity of water, it is advisable to contact the designer of the plant.

When the sum of the water content of the evaporator, the pipes of the hydraulic circuit and the terminals (coils,

exchangers, etc.) is lower than the value obtained, it would be better to opt for a ALZ/ALP HA McQuay cooling unit

equipped with inertial tank (optional).

Installation notes

Handling

All moving and handling may damage the unit if some conditions are not scrupulously observed. The units should

be lifted with a crane using long ropes anchored to the holes on the frame of the units base and by using the

upper spacer bars to prevent the ropes from damaging the condenser coils.

LocationThe ALZ/ALP HA units are produced for outside installation on roofs, floors or below ground level on condition that

the area is free from obstacles for the passage of the condensation air. The unit should be positioned on solid

foundations and perfectly level; in the case of installation on roofs or floors, it may be advisable to arrange the use

of suitable weight distribution beams. When the units are installed on the ground, a concrete base at least 250 mm

wider and longer than the units footprint should be laid. Furthermore, this base should be sufficiently robust to

withstand the unit weight mentioned in the technical data table. When the units are positioned in areas which are

easily accessible by persons or animals, it is advisable to fit guards (option) to protect the condenser and the

compressors.

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Space requirements

The ALZ/ALP HA units are air-cooled, hence it is important to observe the minimum distances which guarantee the

best ventilation of the condenser coils. Limitations of space reducing the air flow could cause significant reductions

in cooling capacity, and increase in electricity consumption. The fans do not allow the use of ducts which have

high flow resistance, hence is should be ensured that the output air cannot recycle itself inside the condenser

coils. The units should be positioned such that there is sufficient distance between the coils and any obstacles to

improve ventilation and also to facilitate inspection (fig.1).

When two or more units are positioned side by side it is recommended that the condenser coils are at least 2500

mm distance from one another (fig. 2). Smaller distances could cause the recirculation of hot air. If the units are

positioned in places surrounded by walls or obstacles of the same height as the units, the units should be at least

2000 mm from said obstacles (fig. 3). In the event the obstacles are higher than the units, the units should be at

least 2500 mm from the obstacle (fig. 4). For other installation solutions, consult McQuay technicians.

Acoustic protection

The low noise levels of the ALZ/ALP HA units means that they meet most of the most restrictive regulations. When

the noise level must meet special requirements it will be necessary to pay the maximum attention to ensure the

perfect insulation of the unit from the support base by applying appropriate vibration-dampening devices, applying

vibration-dampening mounts on the water pipes and on the electrical connections (by the customer).

Nomenclature

ALZ HA 025 . 2 407

ALZ Air cooled chillerALP Air cooled motocondensing unit

High ambient temperature

011033 Unit size

12 N of tandem scroll

407 Refrigerant HFC 407C

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Physical data HFC 407C units

ALZ HA unit size 011.1 013.1 017.1 020.1

Cooling capacity (1) kW 38,5 43,8 54,3 65,2

Power input (1) kW 17,2 20,8 26,3 31,8

Cooling cap. in heat rec. condition (2) kW 46,6 54,5 65,6 82,4

Heating capacity (2) kW 57,7 68,1 83,5 104,1

Power input heat recovery cond. (2) kW 12,5 15,1 20,0 24,1Desuperheaters heating capacity (3) kW 11,0 12,8 15,7 17,1

Desuperheaters pressure drops (3) kPa 14 18 15 20

Scroll compressorsNo. of compressors / No of circuits 1 Tandem / 1 1 Tandem / 1 1 Tandem / 1 1 Tandem / 1

Oil charge l 6,5 6,5 10,4 13,2

No. of reduction steps 2 2 2 2

Refrigerant charge kg 5,5 6 7 8,5

Plate heat exchangersWater volume l 2,6 2,9 3,6 4,4

Max. water pressure bar 30 30 30 30

Condenser fans

No. of fans / Diameter mm 2 / 630 2 / 630 2 / 630 2 / 630

Motor power / rotation regime Kw / rpm 1,9 / 1360 1,9 / 1360 1,9 / 1360 1,9 / 1360Dimensions and weightsUnit length mm 2780 2780 2780 2780

Unit width mm 1200 1200 1200 1200

Unit height mm 1400 1400 1400 1400

Standard unit shipping weight kg 400 520 530 560

Unit with two pumps and tank weight kg 662 676 740 804

ALZ HA unit size 022.2 025.2 029.2 033.2

Cooling capacity (1) kW 76,1 85,9 98,8 105,9

Power input (1) kW 35,2 42,9 47,9 54,9

Cooling cap. in heat rec. condition (2) kW 91,6 106,5 125,1 134,9

Heating capacity (2) kW 115,7 135,2 157,2 171,5

Power input heat recovery cond. (2) kW 26,9 32,1 36,5 41,7

Desuperheaters heating capacity (3) kW 21,4 24,4 28,1 30,0

Desuperheaters pressure drops (3) kPa 18 20 19 24

Scroll compressorsNo. of compressors / No of circuits 2 Tandem / 2 2 Tandem / 2 2 Tandem / 2 2 Tandem / 2

Oil charge l 6,5+6,5 6,5+6,5 6,5+10,4 10,4+10,4

No. of reduction steps 2 2 2 2

Refrigerant charge kg 11 13 16 18

Plate heat exchangeWater volume l 5,2 5,8 6,8 7,6

Max. water pressure bar 30 30 30 30

Condenser fans

No. of fans / Diameter mm 3 / 630 3 / 630 3 / 630 3 / 630

Motor power / rotation regime Kw / rpm 1,9 / 1360 1,9 / 1360 1,9 / 1360 1,9 / 1360

Dimensions and weights

Unit length mm 3530 3530 3530 3530

Unit width mm 1200 1200 1200 1200

Unit height mm 1400 1400 1400 1400

Standard unit shipping weight kg 630 750 760 940

Unit with two pumps and tank weight kg 834 958 992 1040

Notes: (1) Nominal cooling capacity and power input are based on: 12/7 C entering/leaving evaporator water temperature;46C ambient temperature;

(2) Nominal cooling capacity, power input and heating capacity are based on : 12/7 C entering/leaving evaporator

water temperature; 45C leaving HR water temperature.(3) Desuperheaters heating capacity and pressure drops are based on: 12/7C entering/leaving evaporator water

temperature; 40/45C entering/leaving desuperheater water temperature; 46C ambient temperature.

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Electrical data

ALZ / ALP HA Unit size 011.1 013.1 017.1 020.1 022.2 025.2 029.2 033.2

Standard voltage (1) 400 V - 3f 50 Hz + NEUTRAL

Max tandem 1 absorbed current A 37,0 42,4 52,0 64,0 37,0 42,4 52,0 52,0

Max tandem 1 absorbed current A - - - - 37,0 42,4 42,4 52,0

Max total compressors abs. current A 37,0 42,4 52,0 64,0 74,0 84,8 94,4 104,0

Max fans absorbed current A 6,8 6,8 6,8 6,8 10,2 10,2 10,2 10,2

Max unit absorbed current A 43,8 49,2 58,8 70,8 84,2 95,0 104,6 114,2Max inrush current (2) A 134,5 148,2 185,0 224,0 171,5 190,6 227,4 237,0

Note: (1) Allowed voltage tolerance 10%.Note: (2)1 Tandem units: absorbed current of compressor n1 at full load + inrush current of the second compressor.

2 tandem units: absorbed current of Tandem n1 at full load + full load of compressor n1 (of the second Tandem) + inrushcurrent of the last compressor.

Sound pressure level ALZ / ALP HA

Sound pressure level at 1 m from the unit in free field ( rif. 2 x 10-5 )Unit size

ALZ / ALP HA 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz dBA

011.1 75,0 75,0 72,0 71,5 71,0 65,5 58,0 50,5 74,5013.1 75,0 75,0 72,0 71,5 71,0 65,5 58,0 50,5 74,5

017.1 75,0 75,0 72,0 71,5 71,0 65,5 58,0 50,5 74,5

020.1 75,0 75,0 72,0 71,5 71,0 65,5 58,0 50,5 74,5

022.2 77,0 76,5 73,5 73,0 72,5 67,0 59,5 52,0 76,0

025.2 77,0 76,5 73,5 73,0 72,5 67,0 59,5 52,0 76,0

029.2 77,0 76,5 73,5 73,0 72,5 67,0 59,5 52,0 76,0

033.2 77,0 76,5 73,5 73,0 72,5 67,0 59,5 52,0 76,0

Note:Average sound pressure level rated in accordance to ISO 3744, free field conditions.

Sound pressure level ALZ / ALP HA with soundproof cabinet

Sound pressure level at 1 m from the unit in free field ( rif. 2 x 10-5 )Unit size

ALZ / ALP HA 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz dBA011.1 72,5 72,5 69,5 69,0 68,5 63,0 55,5 48,0 72,0

013.1 72,5 72,5 69,5 69,0 68,5 63,0 55,5 48,0 72,0

017.1 72,5 72,5 69,5 69,0 68,5 63,0 55,5 48,0 72,0

020.1 72,5 72,5 69,5 69,0 68,5 63,0 55,5 48,0 72,0

022.2 74,5 74,0 71,0 70,5 70,0 64,5 57,0 49,5 73,5025.2 74,5 74,0 71,0 70,5 70,0 64,5 57,0 49,5 73,5

029.2 74,5 74,0 71,0 70,5 70,0 64,5 57,0 49,5 73,5

033.2 74,5 74,0 71,0 70,5 70,0 64,5 57,0 49,5 73,5

Note:Average sound pressure level rated in accordance to ISO 3744, free field conditions.

Table 6 Sound pressure level correction factor for different distances

ALZ /ALP HA 011.1 020.1

Distance (mt) 1 5 10 15 20 25

dBA 0 -9 -14,1 -17,3 -19,7 -21,5

ALZ /ALP HA 022.2 033.2

Distance (mt) 1 5 10 15 20 25dBA 0 -8,7 -13,8 -16,9 -19,3 -21,1

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Standard ratings ALZ HA HFC 407C

AMBIENT TEMPERATURE - C

30 35 40 43 46ALZ HA

unitsizeHFC407C E

vaporator

leaving

temp.

(C)

Coolingcapacity

(kW)

Powerinput

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

4 41,7 12,1 40,2 13,2 38,0 14,8 36,6 15,8 35,1 16,95 43,0 12,2 41,5 13,3 39,2 14,9 37,8 15,9 36,3 17,06 44,3 12,3 42,8 13,4 40,5 15,0 38,9 16,0 37,4 17,17 45,7 12,5 44,1 13,5 41,7 15,0 40,1 16,1 38,5 17,28 47,0 12,6 45,4 13,6 43,0 15,1 41,4 16,2 39,7 17,39 48,4 12,5 46,7 13,6 44,2 15,2 42,6 16,3 40,9 17,4

011.1

10 49,8 12,6 48,1 13,7 45,5 15,3 43,9 16,4 42,2 17,5

4 47,8 14,6 46,0 15,9 43,3 17,9 41,6 19,2 39,9 20,45 49,2 14,7 47,4 16,0 44,7 18,0 42,9 19,3 41,2 20,66 50,7 14,9 48,8 16,2 46,0 18,1 44,2 19,4 42,5 20,77 52,2 15,0 50,3 16,3 47,4 18,2 45,5 19,5 43,8 20,88 53,8 15,1 51,8 16,4 48,8 18,3 46,9 19,6 45,2 20,99 55,1 15,2 53,2 16,5 50,3 18,5 48,3 19,8 46,5 21,1

013.1

10 56,9 15,3 54,8 16,6 51,7 18,6 49,7 19,9 47,8 21,2

4 59,6 18,6 57,3 20,2 53,9 22,6 51,7 24,2 49,6 25,85 61,3 18,7 59,0 20,3 55,6 22,7 53,3 24,4 51,1 26,06 63,1 18,9 60,8 20,5 57,3 22,9 55,0 24,5 52,7 26,17 65,0 19,1 62,6 20,7 59,0 23,1 56,6 24,7 54,3 26,38 66,9 19,1 64,4 20,8 60,7 23,3 58,3 24,9 56,0 26,59 68,8 19,3 66,3 21,0 62,5 23,5 60,0 25,1 57,6 26,7

017.1

10 70,7 19,6 68,1 21,2 64,2 23,6 61,7 25,3 59,3 26,9

4 71,2 22,7 68,5 24,6 64,5 27,5 61,9 29,4 59,5 31,05 73,3 23,0 70,6 24,9 66,5 27,7 63,8 29,6 61,4 31,36 75,5 23,2 72,7 25,1 68,5 27,9 65,7 29,8 63,3 31,57 77,7 23,4 74,8 25,3 70,5 28,2 67,7 30,1 65,2 31,88 80,0 23,6 77,0 25,5 72,5 28,4 69,6 30,3 67,1 32,09 82,1 23,8 79,1 25,7 74,6 28,6 71,7 30,6 69,1 32,3

020.1

10 84,4 23,9 81,3 25,9 76,7 28,9 73,7 30,9 71,0 32,6

4 83,0 25,1 79,9 27,2 75,3 30,4 72,4 32,6 69,3 34,8

5 85,5 25,3 82,4 27,4 77,7 30,6 74,6 32,8 71,5 35,06 88,1 25,5 84,9 27,6 80,1 30,8 77,0 33,0 73,8 35,27 90,8 25,7 87,5 27,8 82,6 31,0 79,4 33,2 76,1 35,58 93,5 25,9 90,1 28,0 85,0 31,2 81,8 33,4 78,4 35,79 96,1 26,0 92,7 28,2 87,6 31,5 84,2 33,7 80,8 35,9

022.2

10 98,9 26,2 95,4 28,4 90,1 31,7 86,7 33,9 83,2 36,1

4 94,2 30,2 90,5 32,9 85,0 36,9 81,5 39,6 78,4 42,05 96,9 30,5 93,2 33,2 87,7 37,2 84,1 39,9 80,9 42,36 99,8 30,7 96,0 33,4 90,3 37,5 86,6 40,2 83,4 42,67 102,7 31,0 98,8 33,7 93,0 37,7 89,2 40,5 85,9 42,98 105,7 31,3 101,7 34,0 95,7 38,0 91,9 40,7 88,5 43,19 108,7 31,5 104,6 34,2 98,5 38,3 94,5 41,0 91,1 43,4

025.2

10 111,6 31,8 107,5 34,5 101,3 38,6 97,2 41,3 93,6 43,7

4 108,0 34,2 103,8 37,1 97,5 41,5 93,4 44,5 90,1 46,9

5 111,3 34,5 107,0 37,4 100,6 41,8 96,3 44,8 92,9 47,26 114,7 34,8 110,3 37,7 103,7 42,1 99,3 45,2 95,8 47,67 118,1 35,0 113,6 38,0 106,8 42,5 102,4 45,5 98,8 47,98 121,6 35,3 116,9 38,3 109,9 42,8 105,4 45,9 101,8 48,39 125,1 35,6 120,3 38,6 113,1 43,1 108,5 46,2 104,7 48,6

029.2

10 128,6 35,8 123,7 38,9 116,4 43,5 111,6 46,6 107,7 49,0

4 116,8 39,1 112,1 42,4 105,1 47,4 100,5 50,8 96,8 53,55 120,3 39,3 115,5 42,7 108,3 47,8 103,6 51,2 99,7 53,96 123,8 39,7 118,9 43,1 111,5 48,2 106,7 51,6 102,8 54,47 127,3 40,1 122,3 43,5 114,8 48,6 109,9 52,1 105,9 54,98 130,9 40,4 125,8 43,9 118,1 49,1 113,1 52,5 109,0 55,39 134,7 40,8 129,4 44,3 121,5 49,5 116,3 53,0 112,2 55,8

033.2

10 138,4 41,2 133,0 44,7 124,9 49,9 119,6 53,4 115,3 56,3

Notes: (1) Rating based on: evaporator fouling factor of 0,044 m2C/ kW, evaporator temperature drop of 5C and sea level altitude.

(2) Interpolation is allowed, extrapolation is not permitted. Please contact McQuay for performance outside the standard ratings.(3) The power input values are referred to compressor only.(4) To know the units functioning maximum air ambient temperature consult the operating limits table.

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Total heat recovery ratings ALZ HA HFC 407C

LEAVING HEAT RECOVERY CONDENSER WATER TEMPERATURE

40 45 50ALZ HA

unitsizeHFC407C E

vaporator

leaving

temp.

(C)

Coolingcapacity

(kW)

Powerinput

(kW)

Heatingcapacity

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

Heatingcapacity

(kW)

Coolingcapacity

(kW)

Powerinput

(kW)

Heatingcapacity

(kW)

4 46,8 12,3 57,7 44,0 12,3 55,0 41,1 13,1 52,9

5 48,2 12,3 59,2 45,3 12,4 56,4 42,4 13,1 54,3

6 49,8 12,3 60,6 46,3 12,6 57,4 43,7 13,1 55,4

7 52,4 12,2 63,1 46,6 12,5 57,7 44,9 13,0 56,6

8 54,2 12,3 64,9 47,7 12,6 58,9 47,3 13,0 58,9

9 56,5 12,3 67,2 48,9 12,8 60,3 48,8 13,1 60,5

011.1

10 58,3 12,2 68,5 52,4 12,8 63,3 50,0 13,1 61,3

4 54,5 14,6 67,2 49,9 14,8 63,0 47,1 16,0 61,55 56,2 14,6 69,0 51,5 14,9 64,9 49,0 16,1 63,66 57,4 14,5 70,4 53,0 15,1 66,6 52,9 16,1 67,57 59,1 14,6 72,1 54,5 15,1 68,1 53,1 16,3 67,88 60,8 14,6 73,3 56,2 15,1 69,2 54,6 16,2 68,89 64,4 14,6 76,9 59,0 15,3 72,3 54,8 16,3 69,1

013.1

10 66,0 14,6 78,7 60,5 15,3 74,0 56,2 16,5 70,9

4 65,2 18,4 81,5 60,0 19,6 77,6 57,1 20,6 75,85 67,3 18,4 83,7 62,0 19,7 79,7 59,0 20,8 77,8

6 69,5 18,5 85,7 63,7 19,8 81,4 60,7 20,9 79,5

7 71,3 18,6 87,6 65,6 20,0 83,5 62,5 21,0 81,4

8 73,3 18,8 89,8 68,7 20,2 86,7 64,2 21,1 83,1

9 75,7 19,0 92,2 70,9 20,3 88,8 67,6 21,2 86,4

017.1

10 77,6 19,0 96,3 72,7 20,3 92,7 69,3 21,3 90,2

4 77,7 22,2 97,5 76,1 23,5 97,2 71,7 24,7 94,1

5 80,2 22,3 100,0 78,5 23,7 99,7 76,2 24,9 98,7

6 82,5 22,3 102,5 80,7 23,8 102,2 78,5 25,1 101,3

7 85,0 22,6 105,1 82,4 24,1 104,1 77,3 25,9 100,9

8 87,4 22,5 106,7 84,8 24,0 105,6 79,5 25,0 101,4

9 89,8 22,6 109,4 87,1 24,2 108,3 81,8 25,3 104,1

020.1

10 92,3 22,6 112,1 89,5 24,2 110,9 85,6 24,9 107,8

4 90,1 25,0 112,3 83,8 26,4 107,4 78,9 27,7 104,05 93,0 25,2 115,2 86,4 26,6 110,1 81,4 28,0 106,6

6 95,6 25,4 117,9 88,8 26,8 112,7 83,7 28,2 109,0

7 96,0 25,5 118,7 91,6 26,9 115,7 86,3 28,3 111,9

8 98,6 25,7 120,9 96,4 27,1 120,2 90,9 28,2 115,9

9 99,0 25,7 121,9 95,1 27,4 119,7 89,9 28,5 115,7

022.2

10 101,6 25,8 124,1 97,6 27,6 121,9 92,3 28,7 117,9

4 100,2 32,2 129,1 96,2 31,6 124,6 89,0 33,3 119,25 103,4 32,2 132,3 100,5 31,9 129,1 93,0 33,5 123,46 106,4 32,5 135,4 103,4 32,1 132,2 95,7 33,5 126,07 109,5 32,4 138,6 106,5 32,1 135,2 99,6 33,7 130,18 113,8 32,5 142,3 108,1 32,3 136,6 99,1 33,7 129,39 115,9 32,6 145,2 110,1 32,2 139,1 101,1 33,9 131,9

025.2

10 117,2 32,5 145,9 111,3 32,5 140,2 104,2 33,9 134,6

4 121,6 34,6 152,3 113,3 36,0 145,5 106,9 37,9 141,2

5 125,4 34,7 156,2 116,7 36,2 149,1 112,4 38,1 146,7

6 126,1 35,1 158,8 120,4 36,1 154,2 116,0 38,5 152,2

7 129,4 35,4 160,3 125,1 36,5 157,2 119,3 38,5 153,4

8 129,9 36,0 162,5 126,0 36,7 159,5 120,1 38,7 155,7

9 133,6 36,3 164,4 129,6 36,6 160,8 120,2 38,6 153,6

029.2

10 147,5 36,7 178,6 137,4 36,7 168,8 128,4 39,0 162,4

4 131,6 39,5 166,8 122,5 41,3 159,7 115,7 43,4 155,2

5 135,4 39,8 170,9 126,1 41,5 163,4 119,2 43,7 158,8

6 136,0 40,1 173,8 129,9 41,5 169,1 125,1 44,0 166,9

7 139,9 40,7 175,3 134,9 41,7 171,5 128,9 44,1 167,9

8 146,5 41,0 184,3 138,8 41,9 177,6 132,4 44,4 173,8

9 154,6 41,6 190,0 144,1 41,7 179,9 135,0 44,4 173,7

033.2

10 159,0 42,0 194,5 148,2 42,1 184,2 138,7 44,8 177,5

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Standard ratings motocondensing units ALP HA HFC 407C

AMBIENT TEMPERATURE - C

30 35 40 43 46

UnitSizeALPHA

HFC407C E

vaporation

temperature

C Coolingcapacity

(kW)

Power

input

(kW)

Cooling

capacity

(kW)

Power

input

(kW)

Cooling

capacity

(kW)

Power

input

(kW)

Cooling

capacity

(kW)

Power

input

(kW)

Cooling

capacity

(kW)

Power

input

(kW)

0 42,3 13,3 39,4 13,7 37,6 14,1 36,3 14,4 35,1 14,8

2 45,0 13,7 41,9 14,2 39,9 14,5 38,6 14,9 37,3 15,3

4 47,8 14,2 44,5 14,6 42,4 15,0 41,0 15,4 39,7 15,8

6 50,8 14,7 47,4 15,2 45,3 15,6 43,9 16,0 42,5 16,4

8 53,9 15,1 50,4 15,6 48,4 16,0 47,2 16,4 46,0 16,8

011.1

10 56,8 15,5 53,2 16,1 51,1 16,5 49,9 16,9 48,7 17,3

0 47,9 15,9 44,7 16,5 42,9 16,9 41,7 17,3 43,0 17,8

2 50,9 16,4 47,6 17,0 45,6 17,5 44,4 17,9 45,7 18,4

4 54,1 17,0 50,5 17,6 48,5 18,0 47,2 18,5 48,6 19,0

6 57,5 17,5 53,7 18,2 51,5 18,6 50,1 19,1 50,2 19,6

8 61,1 18,1 57,1 18,8 54,8 19,2 53,3 19,7 51,9 20,2

013.1

10 64,4 18,8 60,4 19,5 58,0 20,0 56,5 20,5 55,0 21,0

0 60,0 20,3 55,9 20,9 53,2 21,5 51,4 22,0 49,7 22,6

2 63,8 20,9 59,4 21,6 56,5 22,2 54,7 22,7 52,8 23,34 67,8 21,6 63,1 22,3 60,1 22,9 58,1 23,5 56,2 24,1

6 72,0 22,3 67,2 23,1 64,2 23,7 62,3 24,3 60,4 24,9

8 76,1 23,0 71,2 23,9 68,2 24,5 66,4 25,2 64,6 25,8

017.1

10 80,3 23,8 75,2 24,7 72,4 25,3 70,7 25,9 69,0 26,6

0 71,3 24,9 66,4 25,7 63,2 26,4 61,1 27,0 59,0 27,7

2 76,3 25,7 71,0 26,5 67,6 27,2 65,3 27,9 63,1 28,6

4 81,0 26,5 75,4 27,4 71,8 28,1 69,4 28,8 67,1 29,5

6 86,1 27,4 80,4 28,3 76,8 29,1 74,4 29,8 72,2 30,6

8 91,2 28,2 85,2 29,3 81,7 30,0 79,5 30,8 77,4 31,6

020.1

10 96,3 29,2 90,3 30,3 86,8 31,1 84,7 31,9 82,6 32,7

0 83,1 27,3 77,4 28,5 72,9 29,2 69,7 30,0 66,7 30,7

2 88,9 28,2 82,8 29,4 78,0 30,2 74,5 30,9 71,3 31,74 94,5 29,1 88,0 30,4 82,9 31,2 79,2 32,0 75,7 32,8

6 100,0 30,2 93,3 31,5 88,0 32,3 84,2 33,1 80,6 34,0

8 105,5 31,1 98,7 32,7 92,9 33,5 88,7 34,3 84,6 35,2

022.2

10 111,3 32,2 104,1 33,8 98,1 34,6 93,8 35,5 89,7 36,4

0 93,9 33,1 87,4 34,6 82,3 35,5 78,8 36,4 75,4 37,3

2 100,4 34,2 93,4 35,7 88,0 36,6 84,2 37,6 80,6 38,5

4 106,7 35,3 99,3 36,9 93,6 37,8 89,5 38,8 85,6 39,8

6 112,9 36,7 105,4 38,4 99,3 39,4 95,0 40,4 90,8 41,4

8 119,5 37,8 111,7 39,6 105,2 40,6 100,6 41,6 96,1 42,7

025.2

10 126,0 39,1 118,0 41,0 111,1 42,0 106,1 43,1 101,4 44,2

0 108,2 37,4 100,7 39,2 94,9 40,2 90,8 41,2 86,9 42,2

2 115,6 38,6 107,7 40,4 101,5 41,5 97,1 42,5 92,9 43,6

4 122,9 39,9 114,4 41,8 107,9 42,8 103,2 43,9 98,7 45,0

6 130,5 41,2 121,8 43,2 114,8 44,2 109,8 45,4 105,1 46,5

8 136,5 42,2 129,0 43,9 121,2 45,0 115,5 46,1 110,2 47,3

029.2

10 143,3 43,0 136,7 44,6 127,3 45,7 120,3 46,9 113,8 48,1

0 116,8 43,0 108,7 44,9 102,5 46,1 98,1 47,2 93,9 48,4

2 124,8 44,4 116,2 46,4 109,6 47,6 104,9 48,8 100,4 50,0

4 132,7 45,8 123,5 47,9 116,5 49,1 111,5 50,4 106,7 51,7

6 140,6 47,3 131,2 49,5 123,7 50,8 118,4 52,0 113,3 53,4

8 149,1 48,6 138,9 50,4 131,5 51,7 126,3 53,0 121,4 54,4

033.2

10 156,5 50,1 146,9 51,3 136,3 52,6 128,3 53,9 120,9 55,2

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Evaporator Pressure drops

ALZ HA 011.1 - 020.1 HFC 407C

011.1 013.1 017.1 020.1

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

1,02 10 1,18 10 1,44 10 1,71 10

1,31 15 1,45 15 1,61 14 2,02 14

1,72 28 1,75 21 2,03 20 2,42 20

2,02 36 2,12 30 2,51 31 3,10 34

2,51 52 2,71 47 3,23 50 3,83 49

2,94 74 3,20 72 4,00 78 4,50 70

3,24 100 3,74 100 4,56 100 5,42 100

ALZ HA 022.2 - 033.2 HFC 407C

022.2 025.2 029.2 033.2

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

Flow rate(l/s)

Pressuredrop (kPa)

2,13 10 2,38 10 2,94 10 2,94 10

2,62 15 2,81 14 3,42 14 3,41 14

3,21 2 3,23 18 4,13 19 4,12 193,83 32 4,11 30 5,09 29 5,02 29

5,06 54 5,12 45 6,23 44 6,21 44

6,02 78 6,42 72 7,65 68 7,62 68

6,72 100 7,51 100 9,28 100 9,28 100

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Water pump diagrams

Type A water pump

Standard voltage 400/3/50 Motor power 0,75 kW Absorbed current 2,3 A IP 55

Type B water pump

Standard voltage 400/3/50 Motor power 1,5 kW Absorbed current 4,3 A IP 55

N.B. In order to get the net hydraulic lift, subtract the evaporator pressure drop from diagram value.When you order the unit with the water pump and tank, you must specify the selected type: A or B.

100

110

120

130

140

150

160

170

180

190

200

0,50 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50

Water flow (l/s)

Hydrauliclift(kPa)

60

70

80

90

100

110

120

130

140

150

160

170

180

190

3,00 4,00 5,00 6,00 7,00 8,00 9,00 10,00

Water flow (l/s)

Hydrau

liclift(kPa)

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ALZ/ALP HA Unit dimensions

Fans Arrangement

ALZ /ALP HA 011.1 020.1 ALZ /ALP HA 022.2 033.2

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We reserve the right to make changes in design and construction at any time without notice, thus the cover picture is not binding.

McQuay Italia S P A