Tjernlund SS2G SideShot (Discontinued) 8504075 Rev 1 11/98 - Manual (Page 9)

3. The installer must ensure that the heat anticipator in the comfort thermostat is adjusted according to the thermostat
manufacturer’s recommendation.
4. All wiring must be in compliance with local codes or in their absence, with the latest Edition of the National Electric Code (NFPA #70).
5. Disconnect 115V power before attempting to wire the Power Venter to the appliance. Power may be disconnected by means of
the appliance circuit breaker/fuse.
NOTES:
While it is impossible to include every possible wiring scenario, the following diagrams represent the most common. If wiring the
SS2G to an appliance not equipped with the controls shown on the following diagrams, determine which terminals of the gas
valve are considered “HOT” and “COMMON” and follow the steps on page 9.
When wiring Power Venter to the gas valve wire all thermostats, zones, circulators and limits as would normally be done if venting
into a chimney.
NAT
T PROCEDURES
WIRING SS2G WITH SINGLE ZONE THERMOSTAT
SEQUENCE OF OPERATION WITH SINGLE ZONE THERMOSTAT:
Adjust the furnace thermostat to call for heat. The Power Venter should start. After a slight delay, the furnace burner should fire.
The delay is caused by the Power Venter fan proving switch. The delay will be no more than 4 seconds. If you are unable to
detect a slight delay, contact Tjernlund Products, Inc. at 1-800-255-4208 for assistance. When the fan proving switch closes, the
furnace combustion relay is energized. Normal combustion sequence for the furnace begins: induced draft furnace blower starts,
its proving switch makes energizing ignition control and/or gas valve. DO NOT OPERATE THE FURNACE WITHOUT THE FAN
PROVING SWITCH WIRED INTO THE 24V FURNACE CIRCUIT!
NOTE: When Power Venter is interlocked with a thermostat wire all zones, circulators and limits as would normally be done if
venting into a chimney.
If you are unable to wire the SS2G as outlined in these instructions, call Tjernlund’s Customer Service Department toll free at
1-800-255-4208 for assistance.
8
WIRING SS2G WITH THERMOSTAT
SS2G WIRED TO 24V GAS VALVE
SS2 SEQUENCE OF OPERATION WIRED TO GAS VALVE:
As the thermostat/aquastat senses a need for heat, the internal switch of the thermostat/aquastat will close. The Switch closure
completes the 24V electrical circuit to the internal controls of the appliance. Before the 24V signal reaches the appliance gas
valve, it is interrupted by the Power Venter Relay/Timer and Fan Proving Switch. When the Power Venter Relay/Timer receives
the 24V signal, the contact side closes completing the 115V circuit to the Power Venter motor. The air movement generated by
the Power Venter closes the Fan Proving Switch and completes the circuit to the appliance gas valve. The appliance gas valve
will only receive power when the appliance thermostat/aquastat is calling for heat and the Power Venter is operating. When the
appliance thermostat/aquastat is satisfied, 24V will be discontinued to the Relay/Timer and the Power Venter will continue to oper-
ate for a nonadjustable post purge period of approximately 45 seconds.