Winchester WEFC**48 Installation Manual page 13

Install a grommet in the 3/8" hole on the right side of
2.
the furnace casing to protect the thermostat wire
cable.
Strip ½" of the insulation on the end of each wire.
3.
Insert the wire cable from the thermostat through the
4.
grommet in the right side of the casing and place the
thermostat wire cable on the right side of the control
box, next to the low voltage pintails.
Connect the Red (24 VAC) supply thermostat wire to
5.
the Red low voltage pigtail wire and secure with a
wire nut.
Connect the White (heating) thermostat wire to the
6.
White low voltage pigtail wire and secure with a wire
nut.
Connect the Green (indoor fan) thermostat wire to the
7.
Green low voltage pigtail wire and secure with a wire
nut.
Connect the Yellow (air conditioning) wire from the
8.
thermostat with the Yellow low voltage pigtail wire
on the furnace and with the Red wire from the
compressor contactor on the condenser unit. Fasten
the three wires together securely with a wire nut.
Connect the Brown (24 VAC Common) wire from
9.
the thermostat with the Brown low voltage pigtail
wire on the furnace and with the Brown (Common)
wire from the compressor contactor on the outdoor
unit. Fasten the three wires together securely with a
wire nut.
R
G
W
Y
C
Thermostat
Figure 21: Typical Heating/Cooling Digital
Thermostat Connections
Typical Heat Pump - Heating/Cooling Thermostat Wiring
Connections
1. Remove the control box cover.
2. Install a grommet in the 3/8" dia hole on the right side of
the furnace casing to protect the thermostat wire cable.
3. Strip ½" of the insulation on the end of each wire.
4. Insert the wire cable from the thermostat through the
grommet in the right side of the casing and place the
thermostat wire cable on the right side of the control box,
next to the low voltage pigtails.
5. Connect the Red (24 VAC) supply wire from the
thermostat to the Red low voltage pigtail wire on the
furnace and with the Red wire from the "R" terminal on
the outdoor unit. Fasten the three wires together securely
with a wire nut.
NOTE: If the cooling unit is separate from the furnace and
each have a transformer then remove the Red jumper
WINCHESTER BY MORTEX PRODUCTS INC
R
R
G
W
Y Y
C C
Condenser
Furnace
6. Connect the White (heating) wire from the thermostat to
the White low voltage pigtail wire on the furnace and with
the White wire from the "E" terminal on the outdoor unit.
Fasten the three wires together securely with a wire nut.
7. Connect the Green (indoor fan) wire from the thermostat
to the Green low voltage pigtail wire on the furnace and
securely fasten the two wires together with a wire nut.
8. Connect the Red wire from the "Y" terminal on the
outdoor unit. Fasten the three wires together securely with
a wire nut.
9. Connect the (24 VAC Common) wire from the thermostat
with the Brown low voltage pigtail wire on the furnace
and with the Brown (Common) wire from the "C"
terminal on the outdoor unit. Fasten the three wires
together securely with a wire nut.
10. Connect the Orange (Reversing Valve Solenoid) wire
from the thermostat with the Orange wire from the "O"
terminal on the condenser unit. Fasten the two wires
together securely with a wire nut.
11. Connect the Black (2
thermostat with the Black wire from the "W2" terminal
on the outdoor unit. Fasten the three wires together
securely with a wire nut.
R
G
W/E
C
W2
Y
O
Thermostat
Add Jumper if O.D T-Stat is not used
Figure 22: Typical Heat Pump – Heating / Cooling
FORT WORTH, TX 76106
wire on the "RC" and "RH" terminals and connect
the outdoor unit to the "RC" terminals and the
furnace to the "RH" terminals.
nd
Stage Heating) wire from the
R
G
W
C
W2
Furnace
R
W/E
C
W2
Opt.
O.D.
Y
T-Stat
O
Heat Pump
Outdoor Section
Page 13