Honeywell TB7220 사용자 설명서
TB7220 COMMERCIALPRO™ PROGRAMMABLE THERMOSTAT
9
63-2635—03
Fig. 20. Typical hookup of single-stage heat pump with
auxiliary heat (2H/1C).
Fig. 21. Typical hookup of multistage heat pump
with auxiliary heat (3H/2C).
POWER THE THERMOSTAT
You can choose from three methods to power the thermostat:
• Batteries only (AAA alkaline).
• 24 Vac direct connection only.
• 24 Vac direct connection with battery backup (AAA alkaline).
Wiring 24 Vac Common
• Single-Transformer System—Connect the common side of
the transformer to the C screw terminal of the thermostat
wallplate. Leave the metal jumper wire in place between Rc
and R.
• Two-Transformer System—Connect the common side of
the cooling transformer to the C screw terminal of the
thermostat wallplate. Remove the metal jumper wire
between Rc and R.
Installing Batteries
1. Install two AA alkaline batteries on the back of the ther-
Fig. 22. Installing batteries.
2. Locate and remove tab labeled Remove. See Fig. 23.
IMPORTANT
This tab must be removed in order to set the real-time
clock.
Fig. 23. Remove tab labeled REMOVE from thermostat
back.
COMPRESSOR CONTACTOR
ECONOMIZER
M23020
CHANGEOVER VALVE
1
2
3
4
5
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
AUXILIARY HEAT RELAY
C
G
Y
G
Y
O/B
RC
R
W1
Y2
A
S1
S2
S2
4
2
COMPRESSOR 1
COMPRESSOR 2
M23021
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
L1
(HOT)
L2
1
24 VAC
5
ECONOMIZER
AUXILIARY HEAT RELAY
C
G
Y
G
Y
O/B
RC
R
W1
Y2
A
S1
S2
S2
4
2
M22259
BACK OF THERMOSTAT
BATTERY HOLDER
BATTERIES (2)
REMOVE
TAB
REMOVE DURING INST
ALLA
TION
M22260
REMOVE DURING INST
ALLA
TION