FIGURE 3
HEAT PUMP WITH OPTIONAL MFAD, CRV and ERV VENTILATION
PACKAGING WITH
Low Voltage Wiring Diagram
Thermostat | C | G R Rc Y | E AUX O/B | L | 1 Stage Cool | |
#TH5220D1151 | 2 Stage Heat | |||||
|
|
|
| |||
Bard part |
|
|
|
|
| |
|
| 1 |
|
| "L" is constant 24V output when | |
|
|
|
|
| ||
|
|
|
|
| thermostat is in Em Heat mode |
24V Low Voltage | C G R | Y Y1 E W2 B W1 W3 L DH O1 | |
Terminal Block | |||
|
|
Unit
|
|
| 1 |
| Orange | Red |
|
3 | CRV |
| |
Black | ERV | Ventilation | |
|
|
| |
| Black | MFAD | Packages |
|
|
2
Brown/White
Red
1Factory Jumper Installed
Add jumper, ventilation will be active
2whenever blower operates.
3Do not connect orange wire.
Manual |
| |
Page | 7 of 19 | |
