Panasonic WH-SDC07C3E5, Service Manual

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connect water outlet connector of indoor unit (indicate with
“WATER OUT”) to boiler tank inlet. Fail to connect the tube
appropriately might causing the indoor unit malfunction.
• Be sure to use two spanners to tighten the connection.
Further tighten the nuts with torque wrench in specified
torque as stated in the table.
• If non-brass metallic piping is used for installation, make
sure to insulate the pipes to prevent galvanic corrosion.
• Make sure to insulate the water circuit pipes to prevent
reduction of heating capacity.
• After installation, check the water leakage condition in
connection area during test run.
• Finally, mount the PS foam and long banding strap to
water inlet and outlet connectors, as shown in below illustra-
tion.
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.
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.
• The water may drip from drain hose. Therefore must ensure
the outlet of the hose is always not closed or blocked.
11.3.3.5. Drain Elbow and Hose Installation
• Fix the drain elbow and packing to the bottom of indoor
unit, as show in below illustration.
• Use inner diameter 17 mm drain hose in the market.
• This hose must to be installed in a continuously downward
direction and in a frost-free environment.
• Guides this hose’s outlet to outdoor only.
Model Nut size (Torque)
Water
SDC07C3E5/UD07CE5**,
SDC09C3E5/UD09CE5**
Rp 1¼” [117.6 N•m]
Do not over tighten, over tightening cause water leakage.
Model Piping size (Torque)
Gas Liquid
SDC07C3E5/UD07CE5**,
SDC09C3E5/UD09CE5**
ø15.88mm
(5/8”) [65 N•m]
ø6.53mm
(1/4”) [18 N•m)
Do not over tighten, over tightening cause gas leakage.