analogic 0-10 vdc input device• connect the “analog input” cable to the 0-10 vdc output device...

Installation and Service Instructions for Contractors

6720

8198

41 (2

016/0

4) U

S

ANALOGIC 0-10 VDC INPUT DEVICE FOR BUDERUS SSB BOILERS

6720819841 (2016/04) US Analogic Device

2 | Key to symbols and safety instructions

1 Key to symbols and safety instructions . . . . . . . . . . . . . . 21.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2 Connection to the boiler . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Use of the device for a single boiler application . . . . . . . . . 43.1 Central Heating with Analog Input Control of setpoint . . . .43.2 Central Heating with Analog Input Control of

Modulation Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4 Use of the device for a cascade system . . . . . . . . . . . . . . 6

1 Key to symbols and safety instructions

1 .1 Key to symbolsWarnings

aaWarnings in this document are identified by a warning triangle printed against a grey background.Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken.

The following keywords are defined and can be used in this document:• DANGER indicates a hazardous situation which, if not avoided, will

result in death or serious injury.• WARNING indicates a hazardous situation which, if not avoided,

could result in death or serious injury.• CAUTION indicates a hazardous situation which, if not avoided,

could result in minor to moderate injury.• NOTICE is used to address practices not related to personal injury.

Important information

amThis symbol indicates important information where there is no risk to people or property.

Contents

Analogic Device 6720819841 (2016/04) US

Connection to the boiler | 3

2 Connection to the boilerIn the following figure is shown an overview of connectors and components.

Fig. 1 Connectors and components diagram

NOTICE: This control may be mounted remotely from the boiler. Please make sure this control is not subjected to high heat, excessive moisture, or dust. All wiring shall be accomplished by a licensed electrician according to Federal, State and/or local codes.

To connect the cables follow these instructions:• Connect the “Analog input” cable to the 0-10 VDC output device considering that the brown cable [brn] is for the positive.• Connect the “Link” cable to the terminal 1-2 of the boiler (“cascade link” connection, see the boiler installation manual for details)

considering that the polarity is NOT important.• Connect the “Supply” cable [Wire per National, Federal, State and/or local codes].

Code Description

J1 Receptacle / Connector with leads

J2 Receptacle [not used]J3 Receptacle [not used]J4 Receptacle [not used]J5 Receptacle [not used]

J5 Receptacle / Connector with leads

J7 Receptacle [not used]J8 Receptacle [not used]J9 Receptacle [not used]K1 RelayK2 RelayK3 RelayK4 RelayC3 CapacitorC4 CapacitorC8 CapacitorC10 CapacitorC22 CapacitorISO1 Opto-isolatorISO2 Opto-isolatorISO3 Opto-isolatorISO4 Opto-isolatorF1 Fuse [3.15 A]S4 SwitchT1 Transformer

Wire color legendblu Bluebrn Brownwh Whiteblk Blackgrn/yel Green / Yellow

+

C8

T1C4J6

K1

J2 J9 J3

F1

J1

C22K2 K4 K3

L N GROUND

J5 J7

S4

IS03 IS04 IS01 IS02

J4

ON - OFFLINK

J82

1

2

8

4

2

3

1

1

4

+

+

C10+

C3

+0-10V

GN

D

grn/yel

wh

blkblu

brn

1 2 3

CASCADELINK

blu

brn

SSB Boiler

SUPPLY 120VAC / 60Hz, 24 hour dedicated circuit.

Analog Input From BMS [Building Management System]


4 | Use of the device for a single boiler application

3 Use of the device for a single boiler application

3 .1 Central Heating with Analog Input Control of setpointWith this configuration it is possible to manage via a 0-10 VDC analog signal the setpoint of the boiler. The parameters involved are the following:

N . Description Comment1 Central Heating (CH) Mode This parameter must be set to 423 Design Supply Min Limit Min setpoint temperature24 Design Supply Max Limit Max setpoint temperatureTab. 1 Parameters

The functioning of the boiler depending on the voltage output is shown in the following picture:

Fig. 2 Voltage output diagram

• The setpoint of the boiler is linearly controlled into the voltage interval of 1VDC to 9VDC from a minimum value equal to Par. 23 to a maximum value equal to Par. 24.

• For a voltage between 9VDC and 10VDC the setpoint is in any case set to the maximum value.• The boiler starts when the voltage is higher than 1.5VDC and turns off when the voltage is lower than 1VDC.

Fig. 3 Basic interface

Temp

eratu

re

9VDC

0VDC

1.5VDC1VDC

Voltage

Des. Supply Min Limit

Des. Supply Max Limit

10VDC

+0-10V

GN

D


S4=ONANALOGIC 0-10 VDC

INPUT DEVICE

J5 S4=ON J4

Boiler 1

Boiler 1

1 2 3

CASCADELINK


Use of the device for a single boiler application | 5

3 .2 Central Heating with Analog Input Control of Modulation RateWith this configuration it is possible to manage via a 0-10 VDC analog signal the power of the boiler. The parameters involved are the following:

N . Description Comment1 Central Heating (CH) Mode This parameter must be set to 524 Design Supply Max Limit This parameter sets the setpoint of the boiler92 Fan Speed Maximum This parameter sets the maximum power93 Fan Speed Minimum This parameter sets the minimum powerTab. 2 Parameters

The functioning of the boiler depending on the voltage output is shown in the following picture:


• The power of the boiler is linearly controlled into the voltage interval of 1VDC to 9VDC from a minimum value defined by the Par. 93 to a maximum value defined by the Par. 92.

• For a voltage between 9VDC and 10VDC the power is in any case set to the maximum value.• The boiler starts when the voltage is higher than 1.5VDC and turns off when the voltage is lower than 1VDC.• The setpoint of the boiler is in any case controlled by the system. The value of the setpoint is defined by the Par. 24. If during the supply

temperature becomes higher than the setpoint the boiler starts to modulate ignoring the power adjustment supplied via the analog control.


Powe

r

9VDC

0VDC

1.5VDC1VDC

Voltage

Fan Speed Minimum

Fan Speed Maximum

10VDC

+0-10V

GN

D


S4=ONANALOGIC 0-10 VDC

INPUT DEVICE

J5 S4=ON J4

Boiler 1

Boiler 1

1 2 3

CASCADELINK


6 | Use of the device for a cascade system

4 Use of the device for a cascade systemIn a cascade system you can only use the control setpoint via the 0-10 VDC analog device.

The parameters involved are the same illustrated in paragraph “3.1 Central Heating with Analog Input Control of setpoint” for a single boiler:

N . Description Comment1 Central Heating (CH) Mode This parameter must be set to 423 Design Supply Min Limit Min setpoint temperature24 Design Supply Max Limit Max setpoint temperatureTab. 3 Parameters

The functioning of the cascade depending on the voltage output is shown in the following picture:


• The setpoint of the cascade system is linearly controlled into the voltage interval of 1VDC to 9VDC from a minimum value equal to Par. 23 to a maximum value equal to Par. 24.

• For a voltage between 9VDC and 10VDC the setpoint is in any case set to the maximum value.• The cascade starts when the voltage is higher than 1.5VDC and turns off when the voltage is lower than 1VDC.


Temp

eratu

re

9VDC

0VDC

1.5VDC1VDC

Voltage

Des. Supply Min Limit

Des. Supply Max Limit

10VDC

+0-10V

GN

D


S4=ON

J5 S4=ON J4

Boiler 1

Boiler 1

1 2 3

CASCADELINK

S4=OFFBoiler 2 ÷ Boiler 16

1 2 3

CASCADELINK

Boiler 2

ANALOGIC 0-10 VDC

INPUT DEVICE


Key to symbols and safety instructions | 7

6720

8198

41 -

Rev.0

United States and Canada

Bosch Thermotechnology Corp.50 Wentworth AvenueLondonderry, NH 03053Tel. 603-552-1100Fax 603-965-7581www.boschheatingandcooling.comU.S.A.

Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.

analogic 0-10 vdc input device• connect the “analog input” cable to the 0-10 vdc output device...

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