8
T500 Series Programmable Thermostats Product/Technical Bulletin
ON
1
3
2
4
5
4 Events Per Day
2 Events Per Day
Smart Fan Disabled
Smart Fan Enabled
Heat/Cool: 4 Minute
(Minimum On)
Heat/Cool: 2 Minute
(Minimum On)
Keyboard Unlocked
Keyboard Locked
Fan Immediate
with Heat Call
Fan On with
Plenum Switch
Figure 11: T500HPP-2 Factory-Set DIP Switch
Settings (All Off)
RS2
RS1
RS+V
W1
B
Hpp-2wire
Compressor
Fan
Common
24VAC
Figure 12: T500HPP-2 Wiring Terminals
Table 4: T500HPP-2 Output Terminal
Designations
Terminal
Function
Single-Stage
Heat Pump
Thermostat
Conventional
Single-Stage
Heat/Cool
Thermostat
W1*
Jumpered to Y1
(See Note.)
Energizes on call
for heating
(See Note.)
Y1
Energizes
compressor
contactor
(See Note.)
Energizes on call
for cooling
(See Note.)
G
Energizes fan on call for heating or
cooling or by pressing
Fan
button
R
Independent switching voltage
(See Note.)
24V
24 VAC from equipment transformer
24V(c)
24 VAC (common) from equipment
transformer
RS2
RS1
RS+V
Connections for outdoor air temperature
or indoor remote sensors; refer to
instructions included with sensors
O
Energizes
reversing valve in
the cooling mode
Not used
B
Energizes
reversing valve in
the heating mode
Not used
Note:
Single-Stage Heat Pump:
Leave the factory-installed jumper connected
between W1 and Y1 and wire O or B as shown in
Figure 12.
Conventional Single-Stage Heat/Cool:
Remove the factory-installed jumper between W1
and Y1 and wire as shown in Figure 12. Note that
the O and B terminals are not used in this
application.
