Honeywell FocusPRO TH6220D Installation Manual page 11

FocusPRO "MTH6220D Programmable Thermostat
i
_, Power supply. Provide disconnect means and overload protection as required.
_. Factory-installed jumper. Remove for 2-transformer systems only.
A Optional 24VAC common connection.
,_ In Installer Setup, set system type to Heat Only.
_. In Installer Setup, set system type to 1Heat/lCeol Heat Pump & changeover valve to 0 or B.
_. In Installer Setup, set system type to 2Heat/lCool Heat Pump.
L terminal is powered continuously when thermostat is set to Em Heat.
Install field jumper between Aux and E if there is no emergency heat relay.
,_ In Installer Setup, set system type to 2Heat/2Cool conventional
TypieaB 2H/2C system (f transformer}
L1
L2 (HOT)
__1 1st STAGE _.
COMPRESSOR|
CONTACTOR |
4 IstSTAGE _=_ HEAT RELAY
4 FANRELAY _---
4 2nd STAGE
HEAT RELAY ! I
COMPRESSOR| I [
CONTAOTOR | I_'-- A A
II ,-
(ONVENTIONAL--
Y2 W2 G W C Y R Rc
Typical 2H/1C heat pump system
L1
L2 (HOT)
COMPRESSOR
CONTACTOR
CHANGEOVER
VALVE
FAN RELAY
AUXILIARY HEAT RELAY
-1 EMERGENCY
HEAT RELAY
-1 RELAY }
m
A
AA [eeoooooee
CONVENTIONAL-- vv _ w _ P:
HEATP[JMP--L EAuxGOIB C Y R Rc
A