47
12.1.2.1 Disposal of Mono Bloc Unit Drain Water
When a Drain elbow
□
1
is used, please ensure to follow below:
o
The unit should be placed on a stand which is taller than 50mm.
o
Cover the 8 holes (ø20mm) with Rubber cap
□
2
(refer to illustration below)
o
Use a tray (field supply) when necessary to dispose the Mono bloc unit drain water.
Drain elbow
Rubber cap
x 8
2
1
If the unit is used in an area where temperature falls below 0°C for 2 or 3 consecutive days, it is recommended
not to use the Drain elbow
□
1
and Rubber cap
□
2
, for the drain water freezes and the fan will not rotate.
12.1.3 Piping Installation
WARNING
This section is for authorized and licensed electrician / water system installer only. Work behind the Cabinet Front Plate
⑯
secured by screws
must only be carried out under supervision of qualified contractor, installation engineer or service person.
Temporary connection to be
removed immediately after filling
Servicing
Valve
Fan Coil Unit
2-Way Valve
Tank
Radiator /
Floor Heater
Servicing
Valve
Main Water
Supply
Double Check Valve assembly
is acceptable in house
Typical Piping Installation
Please engage a licensed water circuit installer to install this water circuit.
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.
Use Rp 1¼" nut for both water inlet and water outlet connection and clean all piping with tap water before
connecting to the Mono bloc unit.
Cover the pipe end to prevent dirt and dust when inserting it through a wall. If an existing tank is to be connected
to this Mono bloc unit, ensure the pipes are clean before water pipe installation is carried out.
Choose proper sealer which can withstand the pressures and temperatures of the system.
Make sure to use two spanners to tighten the connection. Tighten the nuts with torque wrench: 117.6 N•m.
If non-brass metallic piping is used for installation, make sure to insulate the piping to prevent galvanic corrosion.
Do not use pipes that are crushed or deformed. If these inferior pipes are used, it may cause unit malfunction.
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.
In case of a power supply failure or pump operating failure, drain the system (as suggested in the figure below).
H
< H
When water is idle inside the system,
freezing up is very likely to
happen which could damage the system.
CAUTION
Do not over tighten, over tightening cause water leakage.
