Tjernlund HST_HS115_HSUL-JC, 1C, 2C Canadian Series (Discontinued) 8504017 Rev 1 09/97 - Manual (Page 15)

14
SAFETY INTERLOCK / COMBUSTION AIR TEST
The Power Venter Fan Proving Switch is designed to disable the appliance gas valve or burner motor upon Power Venter failure only!
It is not designed and cannot replace, regular vent system inspection, appliance servicing and combustion testing.
1. Close all doors and windows of the building. If the appliance is installed in a
utility room or closet, close the entrance door to this room. Close fireplace
dampers.
2. Turn on clothes dryer and all exhaust fans such as range hoods, bathroom
exhausts and whole house fans to maximum speeds. Do not operate a fan
used strictly for Summer exhausting.
3. Following the appliance manufacturer’s instructions, place the appliance in
operation, set thermostat for continuous operation.
GAS
After allowing appliances to operate for five minutes, test for spillage at the “draft hood relief opening” (draft diverter or draft control).
Approved method follows in the Natural Gas Installation Code (CAN/CGA-B149.1-M95). Vent connected gas utilization equipment
shall be operated for several minutes and checked to see that the combustion products are going up the chimney or gas vent proper-
ly, by passing a lighted match or taper around the edge of the relief opening of the draft hood. If not, the combustion products will
tend to extinguish this flame. If the combustion products are escaping from the relief opening of the draft hood, the equipment shall
not operate until proper adjustments or repairs are made to provide adequate draft through the chimney or gas vent.”, (See Diagram I).
If the draw of the flame or smoke appears to be excessive, make necessary adjustments to barometric draft control (if needed) or
follow the “Power Venter Air Flow Damper Adjustment” procedure outlined on page 15.
OIL
Make necessary adjustments to the primary air intake and barometric draft control to comply with the over-fire draft requirements of
the appliance. In most cases, the over-fire draft should be in a range of -.02” to -.04” W.C. If adjustments to the primary air intake
and barometric draft control do not provide the required over-fire draft, the Power Venter draft adjustment must be repositioned
accordingly. Measure over-fire draft after repositioning Power Venter draft adjustment, (See Diagram J, Page 15).
4. Next, turn on all other fuel-burning appliances within the same room so they will operate at their full input. Repeat Step 3 above,
checking the draft on each appliance.
DIAGRAM I
PROPER
DRAFT
ESTABLISHED
PROPER
DRAFT
ESTABLISHED
4 . Connect the YELLOW wire from the Power Venter to one side of
coil on installer supplied R4222B1082 relay.
5. Connect Common of R4222B1082 coil to L2.
6. Connect the WHITE and WHITE/BROWN wire in the Power
Venter to L2.
7. Connect the BLACK wire in the Power Venter to L1.
NOTES: The Power Venter is usually interlocked with the primary control of the appliance. Wire all other furnace/boiler
controls as normally done when conventional venting before continuing. Disconnect power from the appliance before
attempting to interlock the Power Venter.
HST SERIES CONNECTED TO AN R8184G WITH THE APPLIANCE
BURNER MOTOR GREATER THAN 3 AMPS AND LESS THAN 7.4 AMPS @ 120 VAC
1. Disconnect the BLACK burner motor wire from the ORANGE
wire of the R8184G Cad Cell Relay.
2. Connect the BLACK burner motor wire to terminal 3 of the
installer supplied R4222B1082 relay.
3. Connect the ORANGE wire of the R8184G to the ORANGE
and BLUE wires in the Power Venter and terminal #1 on
R4222B1082.
NOTE:
Power Venter may operate indepen-
dently of burner circuit when power
is initially supplied to L1 and L2 con-
nections of the Relay/Timer. If the
Power Venter continues to operate
for more than 10 minutes without a
call for heat, verify that wiring is in
accordance with proper diagram.