T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
63-2605—5 10
Table 7. T7350H Subbase for Modulating Systems with
Network Communications.
a
Factory jumper between RC and RH for systems with one
transformer.
b
Floating auxiliary contact (not connected to transformer hot
or common).
Table 8. T7350M Subbase for Modulating Systems.
a
Factory jumper between RC and RH for systems with one
transformer.
Mounting Thermostat on Subbase (Fig. 8)
With the subbase installed, mount the thermostat:
1. Engage the tabs at the top of the thermostat and
subbase.
2. Swing the thermostat down.
3. Press the lower edge of the case to latch.
NOTE: To remove the thermostat from the wall, first
pull out at the bottom of the thermostat; then
remove the top.
Terminal
Description
Conventional
Heat Pump
RC
a
— 24 VAC Cooling transformer.
RH
a
— 24 VAC Heating transformer.
X—Common.
aux
b
aux
b
Auxiliary relay connection (normally open).
aux
b
aux
b
Auxiliary relay connection (common).
W1 — Stage 1 heating relay.
Y1 — Stage 1 cooling relay.
MX — Modulating common.
MH — Modulating heating signal (4-20 mA).
MC — Modulating cooling signal (4-20 mA).
AS — Discharge Air Sensor connection (1).
AS — Discharge Air Sensor connection (2).
OS — Outdoor Air Sensor connection (1).
OS — Outdoor Air Sensor connection (2).
G—Fan relay.
T3 — T7770 Remote Sensor connection (3).
T4 — T7770 Remote Sensor connection (4).
T5 — T7770 Remote Sensor connection (5).
T6 — T7770 Remote Sensor connection (6).
T7 — T7770 Remote Sensor connection (7).
HS — Humidity Sensor connection (signal: 0-10 Vdc).
HC — Humidity Sensor connection (common).
HP — Humidity Sensor connection (power).
M — Motion Sensor connection (1).
M — Motion Sensor connection (2).
ebus ebus LonWorks Bus (1).
ebus ebus LonWorks Bus (2).
Terminal
Description
Conventional
Heat Pump
RC
a
— 24 VAC Cooling transformer.
RH
a
— 24 VAC Heating transformer.
X — Common.
aux — Auxiliary relay or 2nd stage of heating or cooling.
W1 — Stage 1 heating relay.
Y1 — Stage 1 cooling relay.
MX — Modulating common.
MH — Modulating heating signal (4-20 mA).
MC — Modulating cooling signal (4-20 mA).
AS — Discharge Air Sensor connection (1).
AS — Discharge Air Sensor connection (2).
OS — Outdoor Air Sensor connection (1).
OS — Outdoor Air Sensor connection (2).
G—Fan relay.
T3 — T7770 Remote Sensor connection (3).
T4 — T7770 Remote Sensor connection (4).
T5 — T7770 Remote Sensor connection (5).
T6 — T7770 Remote Sensor connection (6).
T7 — T7770 Remote Sensor connection (7).
HS — Humidity Sensor connection (signal: 0-10 Vdc).
HC — Humidity Sensor connection (common).
HP — Humidity Sensor connection (power).
M — Motion Sensor connection (1).
M — Motion Sensor connection (2).
