7
Installer system test
1. To begin, press and hold the
s and t buttons until the
display changes.
2. Press s / t to turn system
on/off.
3. Press NEXT to advance to next
test
4. Press DONE to terminate
system test.
Temperature Ranges
Heat: 40° to 90°F (4.5° to 32°C)
Cool: 50° to 99°F (10° to 37°C)
Operating Ambient Temperature
32° to 120°F (0° to 48.9°C)
Shipping Temperature
-20° to 120°F (-28.9° to 48.9°C)
Operating Relative Humidity
5% to 90% (non-condensing)
Physical Dimensions
TH5220D
3-9/16” H x 5-13/16” W x 1-1/2” D
91 mm H x 147 mm W x 38 mm D
TH5220D
3-7/16” H x 4-1/2” W x 1-5/16” D
86 mm H x 114 mm W x 33 mm D
Electrical Ratings
Terminal Voltage (50/60Hz) Running Current
W Heating 20-30 Vac 0.02-1.0 A
(Powerpile) 750 mV DC 100 mA DC
W2 (Aux/E) Heating 20-30 Vac 0.02-1.0 A
Y Cooling 20-30 Vac 0.02-1.0 A
Y2 Cooling 20-30 Vac 0.02-1.0 A
G Fan 20-30 Vac 0.02-0.5 A
O/B Changeover 20-30 Vac 0.02-0.5 A
L Output 20-30 Vac 0.02-0.5 A
Specifications
10 0
M29388
10 0
M29388

System test System status

Shaded areas below apply only to TH5320U/TH5220D or as otherwise noted.
10 Heating system 0 Heat and fan turn off.
1 Stage 1 heat turns on. Fan turns on if Setup Function 1 is
set to 1, 5, 9 or 10 OR Setup Function 3 is set to 1
2 Stage 2 heat turns on
3 Stage 3 heat turns on - TH5320U only
20 Emergency heating
system 0 Heat and fan turn off
1 Heat and fan turn on
30 Cooling system 0 Compressor and fan turn off
1 Compressor and fan turn on
2 Stage 2 compressor turns on
40 Fan system 0 Fan turns off
1 Fan turns on
System test
number System
status