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FIGURE 18
LINE VOLTAGE CONNECTIONS
UT ELECTRONIC CONTROLS 1097-200 CONTROL BOARD
FIELD INST LLED OPTION
CCESSORIES
ELECTRONIC AIR CLEANER (EAC)
Spade terminal for EAC is provided on
these models.
HUMIDIFIER
NOTE: There is no "HUM" terminal on
upflow models.
NOTE: Maximum current –1.0 amps
for each option.
FOSSIL FUEL KIT
Refer to specification sheet for
approved fossil fuel kit number.
RXGW-B01 CHIMNEY
D PTER
IMPORTANT: CHIMNEY ADAPTER IS
CERTIFIED FOR USE ON UPFLOW
MODELS.
This appliance is CSA certified for use
with RXGW-B01 Chimney Adapter.
Refer to Kit Installation Instructions
92-101682-01.
26
FURN CE TWINNING
INST LL TIONS
IMPORTANT: ONLY TWIN
FURNACES WITH IDENTICAL
CONTROL BOARDS.
IMPORTANT: TWINNING OF THESE
UNITS REQUIRES AN ACCESSORY
TWINNING KIT. REFER TO THE
FURNACE SPECIFICATION SHEET
FOR PROPER KIT. DO NOT
ATTEMPT TO TWIN THESE MODELS
BY USING THE INSTRUCTIONS
BELOW.
IMPORTANT: ONLY BOTTOM
RETURNS CAN BE USED. NO MORE
THAN TWO FURNACES CAN SHARE
THE SAME SUPPLY AND RETURN.
FURNACES MUST HAVE SAME
HEATING AND BLOWER CAPACITY.
TWINNING FURNACES MUST
OPERATE OFF THE SAME PHASE
OF POWER.
NOTE: Limit of two furnaces per
thermostat.
Twinning operation of two furnaces,
installed side-by-side, connected by a
common duct system with main power
supplied by the same source.
The "OK" LED will blink five times if
twinning is not set up properly.
UT ELECTRONIC CONTROLS
1028-928 CONTROL BOARD
1. Single Stage Operation
(See Figure 16)
a. Control board "ONE" is on
furnace connected to the
thermostat.
b. The 24 VAC supply to both
control boards must be in phase
with each other.
c. Connect the "C," "W" and
"TWIN" terminals to
counterparts on each control.
d. Both control boards must have
switch #3 in the "ON" position.
2. Two Stage Operation
(See Figure 17)
a. Follow above instructions.
Connect "W2" on thermostat to
"W" on control board "TWO".
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