Tjernlund 950-1067 Relay-Timer (Old Style) Kit 8504053 Rev 4 09/96 - Manual (Page 2)

PART #950-1067 INSTALLATION INSTRUCTIONS
24/115 VAC INPUT
ADJUSTABLE POST-PURGE TIMER/RELAY
COMPONENT # DESCRIPTION REPLACEMENT KIT #
860-0345 24 VAC Input Post-Purge Timer/Relay 950-1067
860-0346 115 VAC Input Post-Purge Timer/Relay 950-1067
860-0349 24/115 VAC Input Post-Purge Timer/Relay 950-1067
NOTE: The Tjernlund Timer/Relay Part #950-1067 is used both as a replacement part and as an accessory to Tjernlund Draft
Inducers. Please refer to Section A of these instructions if installing it as a replacement part and Section B if installing it as an acces-
sary part.
A) Disconnect 115 VAC Power from the Power Venter/ Draft Inducer before continuing.
B) All wiring from the Power Venter/Draft Inducer to the appliance must be appropriate class 1 wiring as follows: installed in rigid-
metal conduit, intermediate metal conduit, rigid non-metallic conduit, electrical metallic tubing, Type MI Cable, Type MC Cable or be
otherwise suitably protected from physical damage.
SECTION A (REPLACEMENT OF DEFECTIVE TIMER)
1. Remove the electrical box cover of the Power Venter.
2. Place the replacement Timer next to the defective Timer located in the Power Venter electrical box.
3. One by one, remove the wires from the defective Timer and connect them to the corresponding number on the replacement Timer.
NOTE: Terminals 1 and 2 may be positioned differently on this Timer/Relay than on the Timer/Relay you are replacing. For further
details refer to wiring instructions.
4. Remove the defective Timer from the electrical box by removing the nut/screw.
5. Install the replacement Timer in the electrical box and secure it with the nut/screw removed in step 4.
6. Adjust the timer to its desired setting by turning the set screw. This Timer can be adjusted from approximately 1 minute to approxi-
mately 10 minutes. (Clockwise minimum, Counter Clockwise maximum). CAUTION: Overturning adjustment screw will damage
Timer and void warranty.
7. If the defective Timer failed within the 1 year warranty period, you may return it along with proof of purchase to the Tjernlund
Distributor it was originally purchased from for a full refund.
SECTION B
1. Remove the electrical box cover from the Power Venter/Draft Inducer.
2. Secure the Timer to the inside of the electrical box using the nut/screw provided. It is important that the time delay adjustment pot
face upward.
WIRING
The #950-1067 Timer/Relay may be used to replace either the 24 VAC input #950-1060 or the 115 VAC input #950-1065
Timer/Relays. The #950-1067 is designed to accept either 24 VAC or 115 VAC control input signals. The control inputs are non-polari-
ty sensitive, meaning that the “hot” and the “neutral/return” can be connected to either side of the control input.
The output or motor switching side of the #950-1067 has three terminals. Viewing the Timer/Relay as depicted in diagram “1”, L1 or
the “hot” power lead is attached to terminal L1. L2 or the neutral/return lead is attached to terminal L2 and the Black or “hot” motor
lead is attached to terminal BLK. MOTOR. NOTE: In order for the timer to operate after appliance shutdown, terminals L1 and L2
must be powered continuously with 115 VAC.
The Timer/Relay kit is supplied with quick-connect leads for when it is installed as an accessory control. In most cases it will be easier
to use the existing wire leads when installing it as a replacement for a defective Timer/Relay.