Wiring Guide—Conventional Systems; Terminal Designations - Honeywell TH8320ZW1000 Installation Manual

Installation Guide
Wiring

Terminal Designations

Conventional Terminal Letters:
R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
C Common wire from secondary side
of cooling transformer (if 2 transform-
ers).
W 1st stage heat relay.
W2 2nd stage heat relay
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
G Fan relay.
K Optional THP9045 Wiring Module
Terminal [9]
1H/1C System (1 transformer)
Rc Power [1]
R [R+Rc joined by jumper]
W Heat relay
Y Compressor contactor
G Fan relay
C 24VAC common [3]
K Optional THP9045 Wiring Module
Terminal [9]
Heat Only System
Rc Power [1]
R [R+Rc joined by jumper]
W Heat relay
C 24VAC common [3]
See [notes] below
[1] Power supply. Provide disconnect means and overload protection as required.
[3] Connection to 24VAC common at the transformer is required.
[9] See "Optional THP9045 Wiring Module" on page 14 for more details.
69-2486—03
Wiring guide—conventional systems
Heat Pump Terminal Letters:
R Heating power. Connect to secondary
side of heating system transformer.
Rc Cooling power. Connect to secondary
side of cooling system transformer.
C Common wire from secondary side of
cooling system transformer.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
Aux Auxiliary heat relay.
G Fan relay.
E Emergency heat relay.
L Heat pump reset (powered continu-
ously when System is set to Em Heat;
system monitor when set to Heat,
Cool or Off).
O/B Changeover valve for heat pumps.
K Optional THP9045 Wiring Module
Terminal [9]
Heat Only System (Series 20)
Rc [R+Rc joined by jumper]
R Series 20 valve terminal "R" [1]
W Series 20 valve terminal "B"
Y Series 20 valve terminal "W"
C 24VAC common [3]
2H/2C System (1 transformer)
Y2 Cool relay 2
W2 Heat relay 2
Rc Power [1]
R [R+Rc joined by jumper]
W Heat relay 1
Y Cool relay 1
G Fan relay
C 24VAC common [3]
Optional THP9045 Wiring Module
K
Terminal
4
[9]