20
10.7 Connect the Cable to the Outdoor Unit
1 Remove Control Board Cover (Metal) by
loosening 2 screws.
2 Remove Valve Cover (Metal) by loosening
2 screws.
3 Remove
Plugs.
4 Fix the conduit connectors to the knock out
holes with lock-nuts, then secure them.
5 Connecting wire between indoor unit and
outdoor unit should be UL listed or CSA
approved 4 conductor wires minimum AWG16
in accordance with local electric codes.
6 Wire Connection to the power supply
(208/230V 60Hz) through circuit breaker.
o
Connect the UL listed or CSA approved
wires minimum AWG12 to the terminal
board, and connect to other end of the
wires to circuit breaker.
7 Connect the power supply cord and
connecting wires between indoor unit and
outdoor unit according to the diagram as
shown.
Connectors
Control Board Cover
(Metal)
Pl
u
gs
Knock O
u
t Holes
Side Panel
Valve Cover
(Metal)
Screws
Lock N
u
ts
Screws
Top Panel
1
2
3
1
2
L1
L2
3
1
2
3
1
2
3
Outdoor Unit
Terminal
Unit A
Unit B
Terminal
Indoor
Unit A
Disconnect
Switch
Field supply
Grounding wire
Grounding wire min AWG16
Grounding wire min AWG16
Power Supply
Single Phase
208/230V 60Hz
min AWG12
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
208/230V min AWG16
Terminal
Indoor
Unit B
Unit A
Unit B
Power S
u
pply
Cord
Indoor & o
u
tdoor
connection wire
Indoor
Unit A
Indoor
Unit B
8 For wire stripping and connection requirement, refer to the diagram below.
9 Secure the power supply cord and connection cables onto the control board with the holder.
10 Attach the control board cover (metal and resin) and valve cover back to the original position with screw.
Wire stripping
7
/
32
" (5 mm)
or more
(gap
b
etween
wires)
No loose strand when inserted
Indoor/o
u
tdoor
connecting
terminal
b
oard
WIRE STRIPPING AND CONNECTING REQUIREMENT
Cond
u
ctor f
u
lly
inserted
Cond
u
ctor over
inserted
Cond
u
ctor not
f
u
lly inserted
ACCEPT
PROHIBITED
PROHIBITED
13
/
32
" ±
1
/
16
"
(10±1 mm)
This equipment must be properly earthed.
o
Earth wire must be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reasons.
10.8 Heat Insulation
Use a material with good heat-resistant properties as the heat insulation for the
pipes. Be sure to insulate both the gas-side and liquid-side pipes. If the pipes are
not adequately insulated, condensation or water leakages may occur.
Liquid-side pipes Material shall
withstand 248°F
(120°C) or
higher
Gas-side pipes
