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PG 5
AA
AA
Please be aware of the following power options.
1) The 8035C can run on batteries only. (2AA Alkaline)
The batteries will last well over 1 year. If the batteries are not replaced the
thermostat will stop working.
2) The 8035C can run on the C wire if available. 24VAC ONLY
As shown in the wiring diagrams, The C wire is the other side of the 24VAC
heating transformer. If the C wire is used, the batteries are then for AC power
loss only and will last much longer. The thermostat will continue working if the
batteries die.
5 Install Batteries
The 8035C requires batteries to operate
your furnace and retain its programming in memory.
Switch MODE switch to OFF and the FAN switch to
AUTO.
ï
Insert 2 AA alkaline batteries according to the
polarity noted in the compartment.
ï
Press the RESET button to clear transient program
memory. Initially, all LCD segments will go off.
NOTE: Replace the batteries when this LOW battery
indicator appears on the display or once a year. When
replacing batteries, you have approximately 1/2
minute before your custom program is lost.
4 Gas-Electric Selection
6 Power Options
PG 6
REFER to the back of the Control Unit:
ï If you have Electric Heat or a Heat
Pump (without auxiliary heat) you must
place the Gas/Electric jumper in the
ELECT position (thermostat controls the
Fan).
ï If you have Gas Heat the Gas/Electric
Jumper should be in the GAS position
(furnace controls the Fan ).
Gas/ Electric
jumper
Rear View of control unit
GAS ELECT