User's Manual

Installation
This thermostat is compatible with most HVAC systems, including the following:
 24VAC systems Note: requires both the R and C wires unless battery powered.
 Standard gas/oil/electric heating systems
o 1 stage heating and cooling
o 2 stage heating and cooling
 Heat Pump systems:
o 1 stage heating and cooling
o 2 stage heating and cooling
o 2
nd
or 3
rd
stage Auxiliary heating (heat strips)
 Do NOT use for line voltage controls (120/240VAC)
24VAC Power
The thermostat requires both the 24VAC common wire ”C” (typically blue wire) and the 24VAC hot wire, “R” (typically red wire) to
operate. If the C wire is not present, an external 24VAC transformer is required.
Installation Steps
 Remove old thermostat
 Install TZ45H
 Set up the thermostat for the HVAC system
 Install into a Z-Wave network
Remove old thermostat
 Turn off power. Usually at the heating/cooling system or circuit- breaker panel.
 Remove cover of old thermostat to expose the wiring terminals
 Take a picture of the wiring terminals!
 Mark the wires attached to the terminals with the wiring labels included
 Use the terminal labels and not the wiring color to mark the wires
 Remove the old thermostat base
 Caution. Don’t let the wires slip into the wall.
Taking a picture of the old thermostat wiring terminals before you disconnect them is a good idea. If troubleshooting is required, this
information will be extremely useful for the technical support contact. If you need to reinstall the old thermostat, the picture will
guide the proper reconnection of the wires.
Wiring colors. While the wiring terminals markings are intended to match the wire color (R=red, G=green, W=white, Y=yellow), not
all installations were correctly installed this way.
Be sure to follow the terminal marking when marking the wires, even if the wire color doesn’t match.
Mount the thermostat base
Mount the thermostat base to the wall using the wall anchors and screws provided.
Level as required.
Connect the wires – most common connections
A) Single Stage Gas Heating & Cooling System.
Take a
Picture!
Typical thermostat connections.
* Note: the C wire (24V common) may not
be connected on the old thermostat.
** O or B for Heat Pump systems only
Mark the wires according to the terminal markings.
There may be additional wires. Mark these according to the
terminal markings. Y1, Y2, W1, W2, RC, RH
*C wire (24VAC common) must be installed. If no
C wire is available, an external transformer is
required. See page x
R
G
Y
24C
24RH
W1
O
RS1
RS1
RSC
H1
24RC
G
Y1
Y2
RS2
RS2
RSC
HC
W
C*
Y
C
R
W
G
Y
W
G
R
C*
O or B **
O/B