Honeywell CT3300 warranty Five wires connected to the old thermostat

Five wires connected to the old thermostat

Your new thermostat has a factory-installed metal jumper between the R and Rc terminals (Fig. 15). Remove the jumper before wiring the R and Rc terminals.

JUMPER (FACTORY-	Fig. 15
INSTALLED). REMOVE
IF 5-WIRE SYSTEM

c		R
R
G	Y	W	M20127

Old thermostat terminals that do not match new thermostat terminals

Use the table below to wire the new thermostat.

Old thermostat	Connect to new
terminal	thermostat terminal	Description
R, RH, 4, V	R*	Power
Rc, R	Rc*	Power for cooling
W, W1, H	W	Heat
Y, Y1, M	Y	Cooling
G, F	G	Fan
O	Do not continue	Changeover in cool (O terminal) or changeover in heat (B terminal).
	installation	You have a single stage heat pump or zoning system. See page 2 for an
B
		alternate thermostat model.
C, X, B	Do not connect	Transformer common.
W2, H2	Do not continue	Second stage heat (W2, H2) or second stage cooling (Y2).
	installation.	You have a multistage heating/cooling system. See page 2 for an alternate
Y2
		thermostat model.

*Remove factory-installed jumper between R and Rc terminals in 5-wire systems.

10 INSTALLATION 69-0654-5