Connection Of The Connecting Cords And Power Cord; Terminal Indications - Hitachi RAM-55QH5 Service Manual

Connection of the connecting cords and power cord. (Outdoor unit)
RAM-55QH5
Connecting cord should be connected according to Fig.1, that the Indoor unit No. shall match with terminal board No.
•
of Outdoor unit.
Be sure to fix the connecting cord with the band as shown below. Otherwise water leakage causes short circuit or faults.
•
Type of grounding rod
SP-EB-2
! CAUTION
•
If earth line cannot be taken from
the power supply connection, use
the optional grounding rod to do
earthing.
Wiring pattern
Indoor unit No. 1 Indoor unit No. 2
Screw for ground, earth screw Screw for ground, earth screw
Terminal board Terminal board
C D C
Green-and-
Connecting cord
Yellow
Ø1.6 or 2.0
C1 D1 C2 D2
Terminal board Terminal board
Screw for ground, earth screw Screw for ground, earth screw
For Indoor unit No. 1 For Indoor unit No. 2
Outdoor Unit
Fig. 1
When putting two connecting cords through the band.
•
Screw
Insulating plate
Connecting cord
Hold the handle of the side cover, slide down and take off the corner hook, then pull. Reverse these steps when installing.
•
Bind connecting cords to
make them fit between the
convex sections.
Length
900mm
Grounding rod (optional)
Earth line and grounding rod are not supplied.
(
Please use optional items below.
Indoor Unit
D
Green-and-
Yellow
Connecting cord
Ø1.6 or 2.0
Terminal board
Screw for ground,
L N
earth screw
Green-and-Yellow
Power cord
Cord band
!
WARNING
Circuit breaker
L N
Earth wire
Connection of the power cord and connecting
cord
Power cord and
Connecting cord
To prevent a connection error, connecting cords
•
should be bundled and taped to each respective
pipe. If connecting cords are mixed with other indoor
units, a refrigeration cycle abnormality may occur,
causing dripping.
!
Leave some space in the connecting cord for maintenance purpose
•
and be sure to secure it with the cord band.
Secure the connecting cord along the coated part
•
of the wire using the cord band. Do not exert
pressure on the wire as this may cause
overheating or fire.
– 19 –

Terminal indications

Indoor unit 1 Indoor unit 2
C D C
1 1 2
AC 220V~240V ONLY
INDOOR 1 INDOOR 2
L N
C1 D1 C2 D2
)
WARNING
!
Securely screw in the power cord
and connecting cord so that it will not
get loose or disconnect.
Tightening torque reference value:
1.2 to 1.6 N•m (12 to 16 kgf•cm)
Excessive tightening may damage
the interior of the cord requiring
replacement.
CAUTION
!
WARNING
D
2
Earth