Honeywell PRO TH4110B Installation Manual page 7

PRO TH41 lOB Programmable Thermostat
i
_. Power supply. Provide disconnect means and overload protection as required.
,_ Factory-installed jumper. Remove for 2-transformer systems only.
A Use either O or B terminals for changeover valve.
,_ Use a small piece of wire (not supplied) to connect W and Y terminals.
,_ Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8).
Typiea_ 1H/1C system." 1 transformer
_ HEATRELAY _]
COMPRESSOR
CONTACTOR
FAN RELAY
1(HOT)
I° ° ° _ " °.°1
W Y G O Rc R
Typical 1H/1C system: 2 transformers
HEATRELAV I _.L,
.....* kl (HOT)
°_A2
LI {HOT)
Y G ORc R
Remove jumper
Typical 1H/1C heat pump system
IwYoo sosolA
Typical heat=only system
C _ L2
...... * 1 (HOT)
I'w °°° ° °°1
Y G 0 Rc R B
Typical heat=only system with fan
FAN RELAY
C L2
I (HOT)
I°_°_ °°tl
W Y G O Rc R
Typical cool=only system
CONTACTOR
FAN RELAY C L2
1 (HOT)
Iw _ ° ° _ ° ".°1
g G O Rc R