Tjernlund VP-2F, VP-3F Airotronics Timer 8504140 Rev A 11/11 - Manual (Page 3)

INSTALLER NOTES
1. The installer must read and follow these instructions carefully to assure proper installation and operation of the water
heater vent package.
2. The installer must fill in the required information on the nameplate located on the Power Venter electrical box.
3. The installer must affix the wiring diagram label included with these instructions to the water heater casing adjacent to
its rating plate.
4. The water heater may only be installed on the suction side of Power Venter.
5. The installer must notify the owner of the maintenance (Page 13) required with the use of this product.
6. The installer must verify that the pilot safety controls on water heater are in good operating condition before
installation of the water heater vent package.
7. The Power Venter must not be installed into any portion of a vent system which serves appliances other than the
one(s) vented by the VP-2F or VP-3F.
SEQUENCE OF OPERATION
1. Water heater thermostat calls for heat.
2. Simultaneously, the Power Venter is actuated by the gas pressure switch and the burner fires.
3. When the thermostat is satisfied the burner shuts down.
4. The Power Venter continues to operate for a non-adjustable time period of approximately 45 seconds to purge the
vent system of residual flue gases.
5. If, at any time, sustained flue gas spillage is detected by the Linear Limit spillage sensing switch the pilot / ECO circuit
is de-energized, disrupting the flow of gas to the burner and pilot. The reset button on the Linear Limit will need to be
pushed in and the pilot will need to be relit to establish water heater operation.
TYPICAL INSTALLATION
2
WITH THE ECO OF THE WATER HEATER.
REQUIRED. WIRE THE LINEAR LIMIT IN SERIES
THE THERMOCOUPLE JUNCTION ADAPTER IS NOT
ON 750 MILLIVOLT (POWER PILE) HEATERS
THERMOCOUPLE JUNCTION ADAPTER
PRESSURE TAP
FROM THERMOSTAT
6' LINEAR
LIMIT LEADS
115/1/60
NAMEPLATE
MOTOR
VENTER
POWER
SWITCH
GAS PRESSURE
GAS PRESSURE SWITCH
ALUMINUM TUBING TO
24" LONG 1/4" O.D.
LINE
GAS SUPPLY
BY OTHERS
WATER HEATER
BY OTHERS
THERMOSTAT
LINE
GAS PILOT
8050013 11/30/11
CLIPS
ROUTING
CABLE
THERMOSTAT CABLE
2 WIRE JACKETED
POWER
6 FOOT
BY OTHERS
FLUE PIPE
SWITCH SET AT 185°F
SPILLAGE SENSING
LINEAR LIMIT
GAS PRESSURE
TAP PORT
NOTE:
CORD
TJERNLUND
VENT HOOD
NOTE: The installer must install the Power
Venter downstream of the draft hood.