User's Manual

HVAC SYSTEM CONNECTION
Standard Gas/Electric HVAC System Wiring
Installation Notes
Standard HVAC System Setup
System Type: Set the system type to Gas/Elect in the Mechanical Settings menu of the Installer
Setup. This is the default setting.
Single Stage systems use W1 for heating stage 1 and Y1 for cooling stage 1.
Two Stage Heating systems use W1 for stage 1 and W2 for stage 2 heating.
Two Stage Cooling systems use Y1 for stage 1 and Y2 for stage 2 cooling.
HVAC system transformer: If you have an integrated heating and cooling system with a single
transformer, do NOT cut jumper JP1. Wire the HVAC system’s 24VAC common (blue wire) to the
24Com terminal and the 24VAC Return (red) wire to either 24RH or 24RC terminal. This is typical of
most central systems.
If you have separate heating and cooling systems with separate transformers, cut jumper JP1. Wire
the heating 24V R (red) wire to the thermostat’s 24RH terminal. Wire the cooling systems 24V R
(red) wire to thermostat’s 24RC terminal. Also wire the cooling systems 24VAC Common (blue
wire) to the thermostat’s 24COM terminal.
RED
GREEN
WHITE
YELLOW
Z-WAVE Thermostat
W1 HEAT
JP1: internal RC/RH Jumper
See notes
24RC
ORANGE
BROWN
24RH
G FAN
W2/O
Y1 COMP
Typical HVAC system
thermostat wiring color codes.
Be sure to verify your systems
wiring color codes.
Y2 COMP
24COM
Standard HVAC System
G Fan
W 1 Heat Stage 1
Y1 Compressor Stage 1
R 24VAC RETURN
C 24VAC COMMON
THERMOSTAT CONNECTION
Y2 Compressor Stage 2
W2 Heat Stage 2
BLUE