Panasonic WHSD24BE51, Service Manual

Page: 26 / 85

26
• After installation, check the water leakage condition in
connection area during test run.
11.3.3.3. Indoor Unit Refrigerant Pipe
Installation
1. Please make flare after inserting flare nut (located at joint
portion of tube assembly) onto the copper pipe. (In case
of using long piping)
2. Do not use pipe wrench to open refrigerant piping. Flare
nut may be broken and cause leakage. Use proper
spanner or ring wrench.
3. Connect the piping:
• Align the center of piping and sufficiently tighten the flare
nut with fingers.
• Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
• In case of using long piping, please make flare after
inserting flare nut (locate at joint portion of tube
assembly) onto the copper pipe.
11.3.3.4. Drain Hose Installation
• Use inner diameter 15 mm drain hose in the market.
• This hose must to be installed in a continuosly downward
direction and in a frost-free environment.
• Guides this hose’s outlet to outdoor only.
• Do not insert this hose into sewage hose or cleaning hose
that may generate ammonia gas, sulfuric gas etc.
• If necessary, use hose clamp to further tighten the hose at
drain hose connector to prevent it leakage.
11.3.4. CONNECT THE CABLE TO THE
INDOOR UNIT
1. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 4 x 4.0 mm
2
flexible cord, type designation 60245 IEC 57 or heavier
cord.
• Ensure the colour of wires of outdoor unit and the
terminal Nos. are the same to the indoor unit’s
respectively.
• Earth lead wire shall be longer than the other lead wires
as shown in the figure for the electrical safety in case of
the slipping out of the cord from the anchorage.
2. Cable connection to the power supply through isolating
device (Disconnecting means).
• Isolating device (Disconnecting means) should have
minimum 3.0 mm contact gap.
• Connect the approved polychloroprene sheathed power
supply cable (3 x 4.0 mm
2
), type designation 60245 IEC
57 or heavier cord to the terminal board, and connect the
other end of the cable to isolating device (Disconnecting
means).
3. To avoid cable harmed by sharp edge, cables must go
through bushing (located at the bottom of indoor unit)
before carry out electrical connection. The bushing must
be used and must not take off.
Model Nut size (Torque)
Water
SD/UD24BE5-1, SD/UD30BE5-1 3/4” [58.8 N
O
m]
Do not over tighten, over tightening cause water leakage.
Model Piping size (Torque)
Gas Liquid
SD/UD24BE5-1, SD/UD30BE5-1 5/8” [65 N
O
m] 1/4” [18 N
O
m)
Do not over tighten, over tightening cause gas leakage.