background image

PG

 11

PG

 12

STEP 1 - 

Connect the 

R

 (or RH) wire to 

the 

RH

 terminal on the thermostat. 

This connects the Heater Power to the 

thermostat.

STEP 2 - 

Connect the 

W

 wire to the 

W

 

terminal on the thermostat.

This connects the heater control line to the thermostat.

Your Heater is now concected to the thermostat.

STEP 1 - 

Connect 

the 

R

 (or RH) wire to the 

RH

 terminal 

on the thermostat. This connects to 

the Heater Power .

STEP 2 - 

Connect the 

W

 wire to the 

W

 terminal on the thermostat.

This connects the heater control line to 

the thermostat.

STEP 3 - 

Connect the 

G

 wire to the 

G

 

terminal on the thermostat.

This connects the Fan to the thermostat.

Your system is now conected to the thermostat.

Return To Page 7

Return To Page 7

2 WIRE Heating

(GAS MILLIVOLT or 24vac

NOTE: Wires marked with the dotted line are optional.

NOTE: Wires marked with the dotted line are optional.

3 WIRE 

FURNACE

jumper
wire

Heat 
Power

Heat

W

G

RH

C

FAN

Thermostat

jumper
wire

FURNACE

HEAT

Thermostat

R

W

C

HEAT 
Power

Summary of Contents for 3M-08

Page 1: ...at On replacement installations mount the new thermostat in place of the old one if possible On new Installations follow the guidelines listed below Locate the thermostat on an inside wall about 5 ft 1 5m above the floor and in a room that is used often Do not install it where there are unusual heating conditions such as in direct sunlight near a lamp radio television radiator register or fireplac...

Page 2: ... mount the base PG 3 PG 4 Terminal Block Switch electricity to the furnace and air conditioner OFF then proceed with the following steps Remove cover from old thermostat Most are snap on types and simply pull off Some have locking screws on the side or front These must be loosened Note the letters printed near the terminals Carefully attach labels enclosed to each wire Label the wires one at a tim...

Page 3: ...ostat will draw power from the C wire and this will extend battery life Optional Wire Connections What Wires Do you Have Strip insulation 3 8 in 9 5mm from wire ends Take care not to damage the labels for each wire in handling Connect labeled wires only to a terminal with corresponding letter Bend the wire slightly insert the wire under the contact plate and tighten the screw down onto the wire PG...

Page 4: ...thermostat will go off if the batteries die This exposes your house to unexpected heat or cold and should be avoided Follow these procedures to verify you have correctly installed the unit To check Fan If you connected the G wire fan relay Switch the FAN switch to the ON position Verify that air is blowing from the system Return to AUTO position for normal operation To check HEAT mode Set the mode...

Page 5: ...l over 1 year If the batteries are not replaced the thermostat will stop working 2 The 3M 08 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 not needed Power Options Check Unit cont Congratulations you have successfully installed your unit Please proceed to the OPERAT...

Page 6: ...o the Heater Power STEP 2 Connect the W wire to the W terminal on the thermostat This connects the heater control line to the thermostat STEP 3 Connect the G wire to the G terminal on the thermostat This connects the Fan to the thermostat Your system is now conected to the thermostat Return To Page 7 Return To Page 7 2 WIRE Heating GAS MILLIVOLT or 24vac NOTE Wires marked with the dotted line are ...

Page 7: ... Cooler compressor STEP 3 Connect the RH wire to the RH terminal on the thermostat This connects to the Heater Power STEP 4 Connect the RC wire to the RC terminal on the thermostat This connects to the Cooling Power STEP 5 Connect the W wire to the W terminal on the thermostat This connects to the heater control line STEP 6 Connect the G wire to the G terminal on the Thermostat This connects to th...

Page 8: ...ems The 3M 08 is digital You can program your desired Heat and cool temperature by setting the dial The unit uses no harmful mercury A 5 minute minimum off time in COOL protects your air conditioning system from being damaged Two AA batteries not included are used to run the thermostat in some installation C wire installations require no batteries 3M 08 Features PG 15 1006 007 Customer Support 888...

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