Advertisement
4 Preparation for mouting the base heater
1) Fix the heater support U 2 and L 3 to the base heater 1 with 2 screws M4×8 9 (2 places) as shown in the Fig 2.
(Place the heater supports as they fit in the drain holes).
2) Fix an earth wire 8 to each heater support L 3 with screw M4×8 9.
Screw M4×8 9
Screw M4×8 9
Earth wire 8
Earth wire 8
Heater
support U 2
Heater support L 3
Base heater 1
5 Installing the base heater
1) Hold the left lower side of the heat exchanger and slightly lift it up as
shown in the Fig 3.
2) Insert the base heater 1 under the heat exchanger, and align it with the
groove on the base. Confirm that the heater supports are placed as they
fit in the drain holes.
3) Mount the motor support.
NOTES:
● Take out the earth wire to the left side of the motor support.
● Make sure that the lead wire is not caught between the bottom of the
motor support and the base.
4) Fix the front side of the base heater 1 with the heater plate 4.
Fix the heater plate 4 and motor support with the 2 screws that were
installed to fix the motor support as shown in the Fig 4.
5) Screw the earth plate 7 on the motor support by self-drilling screw 0 as
shown in the Fig 5.
6) Fix the 2 earth wires 8 which are attached to the heater support to the
earth plate 7.
Motor support
Screw ST
4×10
Heater plate 4
(Fig 4)
Drain hole
(Fig 2)
Base heater 1
(Fig 3)
Earth plate 7 location of installation
Align the center of
earth plate 7 with
the middle of guards.
Motor support
Earth
wire 8
Screw M4×8 9
Self-drilling
(Fig 5)
Earth plate 7
screw 0
6 Securing the lead wires
Wiring diagram
Connect the lead wires according to the wiring diagram
on the right.
1) Bundle the lead wires of the base heater and
the fan motor together, and fix 2 positions with
the cable ties 5.
● Secure the lead wires so they will not
interfere with the propeller fan.
● Hook the lead wire of the fan motor to the
hook on the motor support and the ditch.
Lead wire of
2) Reinstall the rear guard.
fan motor
3) Attach the 2 cable straps 2 on the separator as
shown in Fig 6.
Motor support
● The holes to mount the cable straps 2 are
covered with aluminum tape.
Remove the tape before attaching the cable
straps 2.
Cable tie 5
4) Hook all the lead wires in the notch of the
separator.
5) Secure the lead wire of the base heater with the
2 cable straps 2.
6) Secure other lead wires with 3 clamps on the
separator.
7) Reinstall the electrical box.
Reconnect the connectors.
8) Connect the lead wire of the base heater to the
connector CN714 on the controller circuit board
as show in the Fig 7.
9) Bundle all the connectors except CN791,
CN792, and relay connector with the fastener 6.
7 After installation
1) Reinstall the propeller fan, back panel, front panel, top panel, and service
panel.
2) Attach the spec label 1 below the spec name plate.
3) Turn on the breaker, and perform test run to confirm that it works properly.
* Do not install either drain socket which is provided with the outdoor unit
or purchased separately.
Inside of the drain hose and/or the drain socket may freeze if the drain
socket is installed.
0
• Tighten the propeller fan with a torque of 3.4
N•m [2.5
-0.5
• Rotate the propeller fan and make sure that the base heater and the lead wires do not
interfere with the movement of propeller fan.
WARNING
Mount the outer panels securely. Incomplete installation may result in electric shock and fire caused by dust, water, etc.
[OUTDOOR
CONTROL P.C.
1
1
BK
BOARD]
BK
BK
CN714
2
2
(BU)
1
1
BK
RD
BK
2
2
Hook in the notch
Hook
(Fig 6)
Fastener 6
(Fig 7)
0
0
ft-lbs](34
kgf•cm).
-0.4
-5
(Fig 8)
BASE HEATER
BK
BK
THERMAL
PROTECTOR
Hook in the notch
on the separator
Attaching positions
of the cable straps 2
Clamp
Cable straps 2
CN714
Spec name plate
Spec label 1
BH79J668H01
Advertisement
