Tjernlund VP-2, VP-3 (Discontinued) 8504025 Rev A 01/00 - Manual (Page 4)

INSTALLATION RESTRICTIONS
The Power Venter shall not be installed on incinerators, condensing type appliances or solid-fuel burning appliances.
The Power Venter may only be installed on appliances equipped with a draft hood, draft diverter or barometric draft control.
The Power Venter shall not be installed on an appliance with an automatic valve having a manual opener unless the manual opener
has been rendered inoperative or the automatic valve has been replaced with a valve not equipped with a manual opener.
CAUTION:
1. Failure to install, maintain and/or operate the Power Venter in accordance with manufacturer’s instructions
may result in conditions which can produce bodily injury and property damage.
2. The Power Venter must be installed by a qualified installer in accordance with these instructions and all local
codes or in their absence in accordance with the 1988 (or latest) Edition of the National Fuel Gas Code (NFPA #54), The
1987 (or latest) Edition of the National Electric Code (NFPA #70) and The Occupational Safety and Health Act (OSHA)
when applicable. If improperly installed a hazardous condition such as an explosion or carbon monoxide poison
accumulation could result.
3. “Qualified Installer” shall mean an individual properly trained and licensed.
4. The installer must write or imprint name, phone number, date of installation and sign in the appropriate space on the Power Venter
nameplate.
5. Plan the vent system so that Code required distances are maintained from plumbing and wiring.
6. The Power Venter motor shaft must be mounted horizontally to prevent motor bearing wear.
7. Flue gas temperature must not be exceed 575 0 F at Power Venter inlet. Ambient temperature must not exceed 104 0 F.
8. Disconnect power supply when making wiring connections or when working around the fan blade and motor. Failure
to do so may result in severe personal injury and equipment damage.
9. Make certain the power source is adequate for the fan motor requirements. Do not add the Power Venter to a circuit
where the total load is unknown.
10. The installer must verify that the BTU/hr input of the water heater does not exceed the recommended input of the
VP-2 (60,000) or VP-3 (120,000).
11. A safety inspection of the water heater must be performed before installation of the VP-2 or VP-3 as outlined in
ANSI Z223.1/NFPA #54, Appendix H.
ACTUATION AND SAFETY CONTROLS INSTALLATION
GAS SOLENOID VALVE INSTALLATION
After opening carton, inspect thoroughly for hidden damage. Fan blade should rotate freely. If any damage is found notify freight
carrier and your distributor immediately and file a concealed damage claim.
1. Remove the carton labeled “Actuation and Safety Controls.”
2. Open this carton and remove the gas solenoid valve. Make sure that the black coil guard
is covering the coil of the solenoid valve as shown, (See Diagram A).
3. Remove the 3/8” to 1/2” adapters and install as shown. Use thread sealant to ensure a
gas-tight seal. NOTE: 3/8” to 1/2” adapters are not used if using Pilot Saver kit
(P/N: 950-2061).
4. Turn off the gas supply line to the water heater using the shutoff valve in the supply line
to the water heater.
5. Install the solenoid valve between the manual shut off valve and the water heater
thermostat/valve. NOTE: If using Pilot Saver kit (P/N: 950-2061), Solenoid Valve is
installed in 1/2” burner gas line from water heater gas valve to burner.
6. Verify that the arrow on the solenoid valve points in the direction of gas flow to the water
heater. The solenoid valve should be positioned so the top of the coil cover is on top of
or horizontal to the solenoid valve. The top of the solenoid cover must not be pointing
downward.
7. After installation of the solenoid valve conduct a gas leakage test of the appliance piping
and control system down stream of the shutoff valve in the supply line to the appliance
as outlined in the 1988 (or latest) Edition of NFPA 54, ANSI Z223.1, part 4. Any leaks
detected must be repaired and retested.
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DIAGRAM A