Page 12
Y1
O
R
W1
G
D
R
Y1
L
C
C
Furnace Control
ComfortSense
[
7000 Thermostats
Catalog # Y0349 or Y2081
XP21 Two
−
Stage
Heat Pump Control
B
Y2
Y2
W
O
DS
L
T
T
W2
H
W3
H
O
C
L
Y2
DS
DH
G
R
Y1
W2
W1
1
2
3
4
6
5
On
−
board link
Low voltage thermostat
wiring
1. Thermostat
T
terminals are used for outdoor sensor input. Use for thermostat's outdoor temperature display (optional).
2.
R
to
L
connection is required for this model when using the ComfortSense
®
7000 - catalog number Y0349 only. Resistor Kit (catalog number
47W97) required and ordered separately.
3. Cut on-board link
W951
(clippable wire) from
R-O HEAT PUMP
for heat pump applications.
4. Cut on-board link
W915
(clippable wire) for two-stage operation.
5. Cut loop jumper (clippable wire)
Short DS to R
for Humiditrol
®
applications. This will slow the outdoor unit's fan speed to a specific RPM. A wire
must be installed between the
DS
terminals on the furnace and outdoor unit controls.
6.
Cut on
−
board link (clippable wire)
DS
−
R
for Humiditrol
®
or Harmony III
applications. This will slow the indoor blower motor to the lowest speed
setting. See furnace installation instruction or Product Specification bulletin for lowest fan speed information.
NOTE - For defrost temper with furnace, the optional 67M41 temper kit would be wired between W of from the heat pump control (A175) to the W1 of
the furnace control The kit allows for the furnace to cycle on and off during a defrost. It protects the compressor from high refrigeration pressures
during defrost.
FIGURE 12. ComfortSense
®
7000 Series Thermostat – Furnace / Two-Stage Heat Pump
