Tjernlund VP-2F, VP-3F User Manual

Rev. A11/11 Copyright © 2011, Tjernlund Products, Inc. All rights reserved. P/N 8504140

NOTE:

The VP-2F and VP-3F Water Heater Vent Packages use a Linear Limit for the safety
interlock circuit. If the pilot light is extinguished, follow the steps under “IN THE EVENT
OF APILOT OUTAGE” on page 1 of these instructions to relight water heater.

OWNER’S INSTRUCTIONS

THESE INSTRUCTIONS MUST REMAIN

WITH EQUIPMENT

DO NOT DESTROY

ALWAYS FOLLOW WATER

HEATER MANUFACTURER’S
INSTRUCTIONS FOR PROPER
OPERATION OF HEATER AND

RE-LIGHTING OF PILOT

WATER HEATER VENT PACKAGE

For Natural Gas or LP

MODELS

VP-2F For Millivolt Water Heaters up
to 60,000 BTU/hr

VP-3F For Millivolt Water Heaters from
60,000 to 120,000 BTU/hr

Patented

TJERNLUND PRODUCTS, INC.

1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE [phone] • [phone] • FAX [phone]
Visit our web site • ww w.tjernlund.com

Tjernlund Products welcomes your comments and questions. Address all correspondence to: Customer Service,
Tjernlund Products Inc., 1601 Ninth Street, White Bear Lake, MN 55110-6794 or email us at [e-mail].

TABLE OF CONTENTS

In The Event of a Pilot Outage ........................................................................................................................................1

Typical Installation...........................................................................................................................................................2

Sequence of Operation ...................................................................................................................................................2

Installation Restrictions....................................................................................................................................................3

Actuation and Safety Controls Installation ......................................................................................................................3

Gas Pressure Switch...................................................................................................................................3 - 4

Linear Limit Spillage Sensing Switch ................................................................................................................4

Thermocouple Junction Adapter.......................................................................................................................5

Vent Hood .......................................................................................................................................................................5

Code Restrictions & Termination Clearances ...................................................................................................5

Vent Hood Installation .......................................................................................................................................6

Power Venter Installation.................................................................................................................................................6

Code Requirements and Installation Restrictions............................................................................................ 6

Power Venter Installation.............................................................................................................................6 - 7

Electrical Connections.....................................................................................................................................................7

Control Cord Routing.................................................................................................................................. 7 - 8

Actuation and Safety Control Circuit Connections............................................................................................8

Operation Circuit Check..................................................................................................................................................8

Safety Interlock Test ........................................................................................................................................................8

Ladder Wiring Diagram ...................................................................................................................................................9

Combustion Air Test............................................................................................................ .............................................9

Performance Curves......................................................................................................................................................10

Troubleshooting Guide...........................................................................................................................................11 - 12

Maintenance..................................................................................................................................................................13

How to Obtain Service Assistance & Warranty.............................................................................................................13

Replacement Parts List.................................................................................................................................................13

Vent Hood Mounting Template......................................................................................................................................14

IN THE EVENT OF PILOT OUTAGE

1. Push the reset button in the center of the Linear Limit spillage sensing located on

the draft hood on the top of the water heater.

2. Turn the gas pilot knob at the top of water heater gas valve to “OFF” position.

WARNING: Gas pilot knob MUST REMAIN IN “OFF” POSITION FOR FIVE
MINUTES BEFORE PILOT IS RE-LIT. Perform steps 3 & 4 while waiting.

3. Visually verify that there is 115 volt power established to the Power Venter.

Check fuse or circuit breaker, wall plug and electrical connections.

4. Visually verify that all electrical connections of control cord circuit are intact.

5. Follow water heater manufacturer’s re-lighting instructions attached to water

heater or located in water heater owner’s manual.

USER NOTE:

Since the Power Venter cannot operate during a power outage, the safety interlock controls are designed to prohibit gas flow to the
water heater. Follow the above procedures and water heater manufacturer’s instructions for relighting the pilot when power has been
restored.

1

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 SER I ES

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.

3

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 latest edition of the National Fuel Gas Code (NFPA #54), The
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 1040F.

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-2F (60,000) or VP-3F (120,000).

11. Asafety inspection of the water heater must be performed before installation of the VP-2F or VP-3F as outlined in

ANSI Z223.1/NFPA #54, Appendix H.

ACTUATION AND SAFETY CONTROLS 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. Remove the carton labeled “Actuation and Safety
Controls.”

GAS PRESSURE SWITCH INSTALLATION

The gas pressure switch is mounted on the casing of the water heater adjacent to the heater's thermostat/gas control valve. It should
be mounted close enough so that the supplied 1/4" tubing will reach from the gas pressure switch fitting to the thermostat/gas valve
pressure tap port. The two provided screws are self-tapping and drilling. The screws do not require the use of a drill and their 1/2"
length assures that the inner tank will not be penetrated.

1. Mount the gas pressure switch by securing it to the heater casing with a screw in each of the two mounting holes.

IMPORTANT: Mount gas pressure switch so that diaphragm is in a VERTICAL

position, (See Diagram A).

2. Install the supplied 1/8"-NPT pipe plug to the 90

o

port of the supplied 1/8-NPT black pipe tee, (See Diagram A).

Use thread sealant, do not over tighten.

3. Install the 1/8-NPT black pipe tee to the gas pressure switch, (See Diagram A). Use thread sealant, do not over

tighten. CAUTION: Utilize the hex nut on the gas pressure switch when attaching the black pipe tee.

4. Install the supplied Brass 1/8-NPT male x ¼" compression fitting to the 1/8-NPT black pipe tee, (See Diagram A).

Use thread sealant, do not over tighten.

5. Remove the PRESSURE TAP plug from the underside of the thermostat/gas control valve and install the supplied Brass

1/8-NPT male x ¼" compression fitting, (See Diagram A). Use thread sealant, do not over tighten.

IMPORTANT: DO NOT alter the heater's PILOT GAS LINE, (See Diagram A).

6. Using a tube cutter, cut the appropriate length of the supplied 1/4" tubing to reach from the gas pressure switch fitting to the

PRESSURE TAP PORT fitting of the thermostat/gas control valve. Make sure each end of the tubing is not pinched closed.

4

7. Use the 1/4" tubing to connect gas pressure switch fitting to the PRESSURE TAP PORT fitting on the thermostat/gas control valve.

8. Conduct a gas leakage test of all connections as outlined in the latest edition of NFPA 54, ANSI Z223.1, part 4. or local codes.
NOTE: A "gauge pressure tap port" can be accessed by removing the 1/8-NPT pipe plug that is on the 1/8-NPT black pipe tee

(attached to the gas pressure switch).

VE

NT HOOD TERMINATION CLEA

LINEAR LIMIT SPILLAGE SENSING SWITCH INSTALLATION

PURPOSE:

To provide a means for appliance shut-down in the event of flue
blockage or Power Venter failure.

OPERATION:

When concentrated spillage of the products of combustion
occurs from the draft hood, the Linear Limit sensing switch
circuit will open preventing burner operation.

1. Attach the Linear Limit sensing switch mounting bracket to the
top of the water heater using the sheet metal screws provid­ed. The Linear Limit bracket should be approximately 1/2”
from the draft hood.

2. Attach the three Linear Limit capillary mounting brackets
around the draft hood, equally spaced.

3. Insert the Linear Limit spillage sensing switch capillary into
the “U” of the Linear Limit brackets outlining the perimeter of
the draft hood. The Linear Limit capillary may be overlapped
if necessary, (See Diagram B). IMPORTANT: DO NOT CUT
THE CAPILLARY, it will be destroyed and water heater will be disabled.

4. Route the Linear Limit spillage sensing switch cable down the water heater
casing locating the end near the Thermocouple or ECO of water heater.
Secure it with the cable clamps and self drilling screws provided, (See
Diagram B1).

DIAGRAM B

DO NOT ALTER

GAS SUPPLY

INTO PRESSURE TAP PORT.

GAS PRESSURE SWITCH

GAS CONTROL VALVE

THERMOSTAT/

PILOT GAS LINE

8050011 11/30/11

INSTALL BRASS 1/8-NPT MALE
x 1/4" COMPRESSION FITTING

THERMOCOUPLE

BURNER GAS LINE

COMMON

MUST BE MOUNTED VERTICALLY.

GAS PRESSURE SWITCH DIAPHRAGM

IMPORTANT:

BRASS 1/8-NPT MALE x 1/4"
COMPRESSION FITTING

THERMOSTAT / GAS CONTROL

TO PRESSURE TAP FITTING OF

1/4" OUTSIDE DIAMETER

ALUMINUM TUBING - CONNECT

VALVE.

1/8-NPT BLACK PIPE TEE

1/8-NPT PIPE PLUG - NEW
PRESSURE TAP PORT

NORMALLY OPEN

MOUNTING HOLES

IMPORTANT:

A

R

H

O

T

W

A

M

V

C

A

T

I

O

N

GAS

VALVE

DIAGRAM A

DIAGRAM B1