Utica Boilers SSC Installation Instruction

1-1. Pipe the heating system and install all required 

components following installation instructions of 

Additional Heating Device, i.e. a wood boiler.

1-2. Connect the Additional Heating Device and 

Stainless Condensing boiler together as shown in 

Figure A1. If the Additional Heating Device can be 

pressurized.

1-3. Install Stainless Condensing boiler System Sensor 

on the supply side of the piping (supply side of 

Additional Heating Device) as shown in Figure A1. 

       If the Additional Heating Device CAN NOT be 

pressurized (i.e. and open system) connect the 

Stainless Condensing Boiler and Additional Heating 

Device as shown in Figure A2.

1-4. All near boiler piping requirements of the 

Additional Heating Device have to be satisfied. 

Refer to installation and operation manuals of the 

Additional Heating Device.

1-5. Manufacture recommends Additional Heating 

Device bypass valve. Close the

 

bypass valve when 

Additional Heating Device is used. When Additional 

Heating Device will not supply heat for extended 

period of time, open the bypass valve. This is 

important when Additional Heating Device is an 

outdoor wood boiler. Water from the system will 

not be cooled from circulating through the unused 

system.

1-6. Install expansion tank, air vent, and filling pipe at 

upstream (inlet) side of system pump.

2-1. Follow instructions in Additional Heating Device 

manuals when wiring 

(1) all high voltage wires 

and 

(2) Low voltage wires other than Call For Heat 

wire.

2-2. Follow instructions in Stainless Condensing boiler 

Installation, Operation and Maintenance Manual 

when connecting 

(1) all high voltage wires 

and 

(2) Low voltage wires other than Call For Heat 

wire.

2-3. Connect system pump to Additional Heating 

Device, if applicable.

2-4. All zone pumps and zone valves, if controlled 

by heating device, should be connected to and 

controlled by the Additional Heating Device, if 

applicable.

2-5. Remove or deactivate Low Limit control on 

Additional Heating Device, if available.

3-1. Install one of the supplied call for heat controls, 

AR822, onto wall.

3-2. Remove jumper in AR822 between Terminal-L1 

and Terminal-3. 

3-3. Connect Additional Heating Device and Stainless 

Condensing boiler. See Figure A3.
• Connect two wires, from room thermostat or 

from zone control board, to input T-Terminals 

(Terminal-R and Terminal-W) in AR822.

• Connect Terminal-5 and Terminal-6 in AR822 to 

Stainless Condensing boiler CH T-T terminals.

• Connect Terminal-3 and Terminal-4 in AR822 to 

CH T-T input of Additional Heating Device.

• Connect line voltage wires to Terminal-L2 and 

Terminal-L1 in AR822.

4-1. Install supplied call for heat control, AR822, onto 

wall.

4-2. Remove jumper in AR822 between Terminal-L1 

and Terminal-3. 

4-3. Connect Additional Heating Device and Stainless 

Condensing boiler following Figure A4.
• Connect two wires, from hot water tank 

thermostat or from zone control board, to input 

T-Terminals (Terminal-R and Terminal-W) in 

AR822.

• Connect Terminal-5 and Terminal-6 in AR822 to 

Stainless Condensing boiler CH T-T terminals.

• Connect Terminal-3 and Terminal-4 in AR822 to 

CH T-T input of Primary Heating Device.

• Connect line voltage wires to Terminal-L2 and 

Terminal-L1 in AR822.

5-1. Set CH supply temperature setting of Additional 

Heating Device according to heating system 

requirement, i.e. 170°F. 

5-2. Set DHW supply temperature setting of Additional 

Heating Device according to hot water tank 

requirement, i.e. 180°F.