Dunkirk Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler - Manual (Page 5)

5
SECTION A
Stainless Condensing boiler working with HIGH
Temperature Heating Device
A1. Pipe the system
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.
A2. Connect Electrical Wires
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.
A3. Connect CH Call For Heat Wires
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.
A4. Connect DHW Call For Heat wires, if applicable
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.
A5. Setting the Additional Heating Device
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.
SECTION A - STAINLESS CONDENSING BOILER OPERATING WITH HIGH TEMPERATURE HEATING DEVICE