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9
WALL THERMOSTAT TERMINAL
(Optional)
IMPORTANT: Only trained, qualified personnel
should access electrical panel on unit and install
electrical accessories. Please contact your local
electrical contractor, dealer, or distributor for
assistance.
Thermostat Wire Routing
Thermostat wire is field-supplied. Recommended
wire gauge is 18 to 20 gauge solid thermostat wire.
NOTE:
It is recommended that extra wires are run
to unit in case any are damaged during installation.
Thermostat wire should always be routed around
or under, NEVER through, the wall sleeve. The
wire should then be routed behind the front panel
to the easily accessible terminal connector.
THERMOSTAT WIRE ROUTING
(UNDER SLEEVE, BEHIND FRONT PANEL)
Fig. A - Proper Wire Routing Beneath Unit
NOTE: Refer to thermostat installation instructions
for details on installing wall thermostat.
Installation instruction of some types of wall
(you can consult with the
sales agency or manufacturer for details)
thermostats
-
Pull the dip switch to the DOWN (OFF) position as
shown below.
- Insert the wire connector of the wall t
into
the relevant terminal according to different shapes (as
shown below).
hermostat
Terminal of
some types of wall
thermostats
Installation instruction of PTAC
other Wall
Thermostat
- Remove the two screws (as shown below) and take
the cover panel down.
Remove the two screws
Take the cover panel down
Terminal of PTAC
other Wall
Thermostat
FC(L)
FC(N)
LO
W
-F
AN
HI-
FAN
4-
W
A
Y
HE
A
T2
HE
A
T1
COMP
24V(N)
24V(L)
Terminal of PTAC
other Wall Thermostat
Dip switch
Dip switch
TERMINAL
BOARD
THERMOSTAT
TERMINAL MAY
SHOWS*
TERMINAL BOARD DESIGNATION
FC(L)
NOT APPLICABLE Front desk control terminal L
FC(N)
NOT APPLICABLE Front desk control terminal N
LOW-FAN
G
Low fan speed
HI-FAN
G
High fan speed (first choice)
4-WAY
B
4-way valve; Reverse cycle (Energized in
Heat
）
for Heat Pump models
HEAT2
Electrical heater 2
HEAT1
Electrical heater 1
COMP
Y
Compressor
24V(N)
C
24VAC terminal N(Neutral), Common
24V(L)
R
24VAC terminal L(Life)
W*
*Different brands thermostat terminal marking may vary from each other, when
there's description differnce between TERMINAL BOARD DESIGNATION and
BOARD DESIGNATION shall prevail.
*Short circuit HEAT1 and HEAT2 on Terminal Board before connecting with
Thermostat.
