RCS TBZ48 Installation Guide

G Fan
W1 Aux Heat
Y1 Compressor Stage 1
R 24VAC Return
C 24VAC Common
Y2 Compressor Stage 2
O Changeover Valve
Connect the R wire to either
the RC or RH terminal.
RC and RH are jumpered
together internally.
Heat Pump HVAC System
Thermostat Connection
Heat Pump HVAC System Wiring
Thermostat Setup:
Heat Pump HVAC Systems
For Single Stage Heat/Cool Systems:
Go to the Menu screen by pressing and holding the FAN button for 5 seconds
Press the down arrow to select the SYSTEM menu and press Select.
Set the following:
SYSTEM TYPE: Set to HEAT PUMP
CHANGE OVER: For changeover with cooling systems (Orange wire): set to WITH COOL (most common and default setting)
For changeover with heating systems (Brown wire): set to WITH HEAT
You must configure the thermostat’s changeover valve setting to work correctly with your HVAC system.
Check your system information to be sure and note the color of original thermostat wire and the terminal it was connected to.
No matter what the old stat connection was (O or B), connect the wire to the thermostats W2/O terminal.
For Two Stage Heat/Cool Systems:
Go to ADVANCED SYSTEMS SETTINGS menu. From the Setup menu screen, press and hold the Fan and Down arrow buttons
for 5 seconds. Use the Down arrow button to select the following:
AUXHEAT: If you have auxiliary heat strips, set this to Y to enable. (Default is Y)
2ND STAGE HEAT ENABLE: Enable second stage heating outputs
If a single stage heating system, leave this set to N
If a 2 stage heating system, set to Y to enable.
2ND STAGE COOL ENABLE: Enable second stage cooling outputs
If a single stage cooling system, leave this set to N.
If a two stage cooling system, set to Y to enable.
Note! If you get heating
when you expected cooling
or vice versa, change the
Change Over type to the
opposite setting.
Thermostat back
Y2 Y1
G
RC
C
RH
W1
W2
/O
Black/Brown
Yellow
Green
Red
Blue
White
Orange
Typical thermostat wiring colors.
Caution: verify that original wiring
matches. Colors may be different.
C wire is not required for
battery operation.
NOTE! Most Heat Pump
systems do have the C wire
and the thermostat can be
power by the 24VAC from the
HVAC system.
Batteries are not required for
24VAC powered systems.
Internal RC=RH jumper
DCN: 140-02121-06 Page 6

RCS TBZ48 Specifications

General

Brand	RCS
Model	TBZ48
Category	Thermostat
Language	English