4
CAUTION
WARNING
19. The unit is only for use in a closed portable water system. Utilization in an open water circuit or non-portable water circuit, may lead to
excessive corrosion of the water piping and risk of incubating bacteria colonies, particularly Legionella, in water.
20. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
21. Do not dismantle refrigerant piping using pipe wrench. It might deform the piping and cause the unit to malfunction.
22. Select a location where in case of water leakage, the leakage will not cause damage to other properties.
23. Do not locally purchase electrical parts of the product for the purpose of installation, service, maintenance and etc. They might cause
electrical shock or fire.
24. Do not branch the power from terminal block to heater tape. Overloaded terminal block will cause electrical shock or fire.
25. Installation or servicing work. It may need two people to carry out the installation or servicing work.
26. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other
electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
27. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may
break and cause refrigerant gas leakage.
1. Do not install the air-to-water heatpump indoor unit and outdoor unit at place where leakage of flammable gas may occur. In case
gas leaks and accumulates at surrounding of the unit, it may cause fire.
2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the
furniture.
3. It may need two persons to carry out the installation work. The weight of indoor/outdoor unit might cause injury if carried by one person.
4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
5. Select an installation location which is easy for maintenance.
6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F - 70°F (30°C - 40°C) higher. Please use a
high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
7. Power supply connection to indoor unit.
1. Power supply point should be in easily accessible place for power disconnection in case of emergency.
2. Must follow local national wiring standard, regulation and this installation instruction.
3. Strongly recommended to make permanent connection to a circuit breaker.
- Power Supply 1: Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0 mm.
- Power Supply 2: Use approved 15/16A 2-poles circuit breaker with a minimum contact gap of 3.0 mm.
(Only applicable for WH-SDC09F3E8)
or
Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0 mm.
(Only applicable for WH-SDC12F9E8)
WH-SDC14F9E8 WH-UD14FE8 WH-SDC16F9E8 WH-UD16FE8 only
8. Power supply connection to indoor unit.
1. Power supply point should be in easily accessible place for power disconnection in case of emergency.
2. Must follow local national wiring standard, regulation and this installation instruction.
3. Strongly recommended to make permanent connection to a circuit breaker.
- Power Supply 1: Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0 mm.
- Power Supply 2: Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0 mm.
9. Do not release refrigerant during piping work for installation, servicing, re-installation and during repairing a refrigeration parts. Take
care of the liquid refrigerant, it may cause frostbite.
10. Do not install this appliance in a laundry room or other high humidity location. This condition will cause rust and damage to the unit.
11. Make sure the insulation of power supply cord does not contact to hot part (i.e. refrigerant piping, water piping) to prevent from
insulation failure (melt).
12. Do not sit, step or place anything on the unit, you may fall down accidentally.
13. Do not touch the sharp aluminum fins or edges of metal parts.
If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.