tjernlund vp-2,3 8504025 rev a 0100 Manuale Utente

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.

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.

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.

3

DIAGRAM A