Tjernlund 950-1032 User Manual

MODEL 950-1007 AND 950-1032 FAN PROVER KITS
Disconnect power supply to all heating, venting equipment and controls before making wiring connections to prevent electrical shock and equipment damage.
REPLACEMENT OF OLD STYLE FAN PROVER SWITCHES PREVIOUSLY MOUNTED ON ELECTRICAL BOX (SEE DIAG. A)
1. Disconnect power supply to all heating equipment and remove old Fan Prover switch from HS-3, 4, 5 electrical box.
2. Mount new Fan Prover switch with the diaphragm in a vertical orientation within 2 feet of HS-3, 4, 5 electrical box and within 4 feet of the Power Venter for 1/4” aluminum tubing connection.
3. Attach conduit mounting plate with whip assembly to HS-3, 4, 5 electrical box with 2 provided screws and connect 2 foot whip to new Fan Prover electrical box by using provided fittings.
4. Connect the 1/4” aluminum tubing from the Fan Proving Switch to the Power Venter housing using existing supplied fittings. The factory calibrated sensing tube length and compression fittings are critical for proper operation of the Fan Proving Switch. If it is necessary to alter the sensing tube length, ONLY trim sensing tube portion that is on the exterior of the housing. IMPORTANT: DO NOT trim the sensing tube portion that will be mounted in the interior of the housing because Fan Prover will not sense the proper pressure. Sensing tube assembly with factory calibrated length must be
used for Fan Prover to work properly!
5. Cut female quick connect leads off of wires that were connected to old Fan Prover and wire nut these wires to the new leads from 2 foot whip connected to new Fan Prover. Connect leads in new Prover electrical box. Prover leads are not polarity sensitive so connection order on switch terminals does not matter.
6. Reestablish power and run heating equipment through a couple of heating cycles to verify proper operation.
REPLACEMENT OF SIMILAR STYLE FAN PROVER SWITCHES WITH THEIR OWN ELECTRICAL BOX (SEE DIAGRAM B)
1. Disconnect power supply to all heating equipment and remove Blue and Yellow leads from old Fan Prover switch and motor lead connections in old Fan Prover junction box.
2. Mount new Fan Prover in a vertical orientation in the same location as old Prover. You can use the old Fan Prover sensing tubing as long as it is not damaged or kinked. If damaged, replace with new tubing.
3. Connect the 1/4” aluminum tubing from the Fan Proving Switch to the Power Venter housing using existing supplied fittings. The factory calib­rated sensing tube length and compression fittings are critical for proper operation of the Fan Proving Switch. If it is necessary to alter the sens­ing tube length, ONLY trim sensing tube portion that is on the exterior of the housing. IMPORTANT: DO NOT trim the sensing tube portion that will be mounted in the interior of the housing because Fan Prover will not sense the proper pressure. Sensing tube assembly with factory
calibrated length must be used for Fan Prover to work properly!
4. Connect existing conduit from Venter motor and controls to new Fan Prover.
5. Reconnect Blue and Yellow leads removed in step 1 to the new Fan Prover switch. Prover switch leads are not polarity sensitive. Reconnect motor leads removed in step 1 in new Fan Prover Junction box.
6. Reestablish power and run heating equipment through a couple of heating cycles to verify proper operation.
Rev. 11/02 Copyright © 2002, Tjernlund Products, Inc. All rights reserved. P/N 8504113
TJERNLUND PRODUCTS, INC.
1601 Ninth Street • White Bear Lake, MN 55110-6794 PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547 Visit our web site • www.tjernlund.com
FAN PROVER
VENTER
5 FT. LENGTH PROVIDED
2 FT. MAXIMUM LENGTH UNLESS ADDITIONAL CONDUIT,
J-BOX AND WIRE ARE ADDED (MINIMUM 14 GAGE)
ALUMINUM SENSING TUBE
SIDE OF SENSING TUBE
DO NOT ALTER THIS
HOUSING WALL
SENSING TUBE
ASSEMBLY
SENSING TUBE
COMPRESSION RING
BRASS ELBOW FITTING
COMPRESSION RING
AND WIRE ARE ADDED
DIAGRAM B
FAN PROVER
VENTER
SIDE OF SENSING TUBE
DO NOT ALTER THIS
HOUSING WALL
SENSING TUBE
ASSEMBLY
SENSING TUBE
COMPRESSION RING
BRASS ELBOW FITTING
COMPRESSION RING
MOUNTED VERTICAL
ELECTRICAL
BOX
CONDUIT
MOUNTING
PLATE
DIAGRAM A
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