Honeywell TB7220U Installation Instructions

TB7220U ULTRASTAT PROGRAMMABLE THERMOSTAT
5 62-0223—1
Fig. 11. Typical hookup of single transformer
multistage system (up to 2H/2C).
Fig. 12. Typical hookup of dual transformer multistage
system (up to 2H/2C).
M23058
HEAT RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
1
3
2
3
COOL RELAY 1
HEAT RELAY 1
COOL RELAY 2
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
M23059
HEAT RELAY 2
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
REMOVE FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT
TO THE COOLING TRANSFORMER SECONDARY.
1
3
2
3
COOL RELAY 1
HEAT RELAY 1
COOL RELAY 2
L1
(HOT)
L2
1
24 VAC
L1
(HOT)
L2
1
24 VAC
C
G
Y
W
RC
R
W2
Y2
S1
S2
2
COOLING
TRANSFORMER
HEATING
TRANSFORMER

Honeywell TB7220U Specifications

General

Brand	Honeywell
Model	TB7220U
Category	Thermostat
Language	English