Panasonic WH-MDC09C3E5, Servise Manual

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11.3. Piping Installation
Please engage a licensed water circuit installer to install this water circuit.
• The minimum requirement of water in the system is 50 litres. If this value could not be achieved, please install additional buffer
tank (field supply).
• This water circuit must comply with relevant European and national regulations (including EN61770), and local building
regulation codes.
• Ensure the components installed in the water circuit could withstand water pressure during operation.
• Do not apply excessive force to piping that may damage the pipes.
• Do not install any valve between Mono bloc unit and water piping to avoid accidental closure of water supply to the Mono bloc
unit.
• Use Rp 1 ¼” nut for both water inlet and water outlet connection and clean all piping with tap water before install.
• If old heat pump terminal / tank is utilized, please clean the dust properly before installation.
• Refer Diagram 3.1 for installation of 3-way Valve Kit.
• Must install an external filter (30 mesh or more, field supply) before water inlet connector of Mono bloc unit (indicate with
“WATER IN”).
• Connect the external of Mono bloc unit (indicate with “WATER OUT”) to boiler tank inlet. Fail to connect the tube appropriately
might causing the Mono bloc unit malfunction.
• Choose proper sealer which can withstand the pressures and temperatures of the system.
• Make 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 piping to prevent galvanic corrosion.
• Do not use worn out piping.
• Make sure to insulate the water circuit piping (insulator thickness : 20mm or more) to prevent condensation during cooling
operation and reduction of heating capacity, as well as avoid freezing of the outdoor water circuit piping during winter season.
• After installation, check the water leakage condition in connection area during test run.
This section is for authorized and licensed electrician / water system installer only. Work behind the front plate secured by
screws must only be carried out under supervision of qualified contractor, installation engineer or service person.
Model
Nut size (Torque)
Water
WH-MDC09C3E5
RP 1 1/4" [117.6 N•m]
WH-MDC12C6E5
WH-MDC14C6E5
WH-MDC16C6E5