Instructions / Assembly
PG 8
PG 8
HVAC Selection
• Set the HVAC TYPE switch in the NORM position if you have
conventional natural gas, propane, oil, or electric heat. If you have a
HEAT PUMP system set the HVAC TYPE switch to HP.
• Set the HEAT SOURCE switch in the GAS position if you have
normal Gas or Oil heat or if you have a heat pump with gas or oil auxiliary heat. Put the HEAT
SOURCE in the ELEC position if you have normal electric heat or if you have a heat pump with
electric auxiliary heat.
Install 3 AA Batteries
• Install 3 AA alkaline batteries [required] following
the marked polarity in the battery compartment.
Put the lower battery in negative end rst against
the spring, then push the positive end in. Then
insert the last 2 batteries as shown.
IMPORTANT: Press the RESET button (under
top cover) to implement the HVAC switch selections.
• With all the wires connected it is time to turn the AC power back on. Do this at the breaker you used
to switch it off. The 3M-22 will power-up in the control OFF mode. Your 3M-22 is not congured to
operate your HVAC system yet. You must now congure your thermostat for your HVAC system.
G
AS
ELEC
N
O
R
M
H
P
HVAC
TYPE
H
E
A
T
S
O
U
R
C
E
R
E
S
E
T
AA
AA
AA
1
2
3