Outdoor Unit
Installation Manual
– 15 –
7 Electricalwork
WARNING
1. Usingthespecifiedwires,ensurethatthewires
areconnected,andfixwiressecurelysothatthe
externaltensiontothewiresdoesnotaffectthe
connectingpartoftheterminals.
Incomplete connection or fixation may cause a fire,
etc.
2. Besuretoconnecttheearthwire.(Grounding
work)
Incompleteearthingmayleadtoelectricshock.
Do not connect earth wires to gas pipes, water pipes,
lightning rods or earth wires for telephone wires.
3. The appliance shall be installed in accordance
withnationalwiringregulations.
Capacity shortages of the power circuit or an
incomplete installation may cause an electric shock
or fire.
CAUTION
• An installation fuse must be used for the power supply
line of this Air to Water Heat Pump.
• Incorrect / incomplete wiring may lead to an electrical
fire or smoke.
• Prepare an exclusive power supply for the Air to Water
Heat Pump.
• This product can be connected to the mains power.
Fixed wire connections:
A switch that disconnects all poles and has a contact
separation of at least 3 mm must be incorporated in
the fixed wiring.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core or inner
insulator of the power and hydro/outdoor connecting
wires when peeling them.
• Use the power and hydro/outdoor connecting wires
with specified thicknesses, specified types and
protective devices required.
• Check that cabling will not be subject to wear,
corrosion, excessive pressure, vibration, sharp edges
or any other adverse environmental effects.
The check shall also take into account the effects of
aging or continual vibration from sources such as
compressors or fans.
<HWT-40,60>
1. Remove valve cover screw.
2. Pull the valve cover downward to remove it.
<HWT-80,110,140>
1. Remove the service panel, and the terminal cover.
2. A conduit pipe can be installed through the hole for
wiring. If the hole size does not fit the wiring pipe to
be used, drill the hole again to an appropriate size.
3. Be sure to clamp the power wires and hydro/outdoor
connecting wires with a cord clamp along the
connecting pipe so that the wires do not touch the
compressor or discharge pipe.
(The compressor and the discharge pipe become
hot.)
■WiringbetweenHydroUnitandOutdoorUnit
The dashed lines show on-site wiring.
Connect the system interconnection wires to the identical terminal numbers on the terminal block of each unit.
Incorrect connection may cause a failure.
<HWT-***H(R)W>
Terminal cover
Service panel
Valve cover
Power wire
Hydro/outdoor
connecting wires
For the Air to Water Heat Pump, connect a power wire with the following specifications.
Model HWT- 401HW 601HW 801H(R)W 1101H(R)W
Powersupply 220-240 V ~ 50 Hz
Maximumrunningcurrent 14.6 A 20.3 A
Recommended field fuse 16 A 25 A
Powersupplywire* 2 × 2.5 mm
2
or more (H07 RN-F or 60245 IEC 66)
Outdoorearthwire 1 × 2.5 mm
2
or more
Hydro/Outdoorconnectingwires* 4 × 1.5 mm
2
or more (H07 RN-F or 60245 IEC 66)
* Number of wire × wire size
Model HWT- 1401H(R)W
Powersupply 220-240 V ~ 50 Hz
Maximumrunningcurrent 28.8 A
Recommended field fuse 32A
Powersupplywire* 2 × 4 mm
2
or more (H07 RN-F or 60245 IEC 66)
Outdoorearthwire 1 × 4 mm
2
or more
Hydro/Outdoorconnectingwires* 4 × 1.5 mm
2
or more (H07 RN-F or 60245 IEC 66)
* Number of wire × wire size
Model HWT- 801H8W-E
801H8RW-E
1101H8W
1101H8RW
1401H8W
1401H8RW
Powersupply 380-415 V 3N~ 50 Hz
Maximumrunningcurrent 14.6 A
Recommended field fuse 16A
Powersupplywire* 4 × 2.5 mm
2
or more (H07 RN-F or 60245 IEC 66)
Outdoorearthwire 1 × 2.5 mm
2
or more
Hydro/Outdoorconnectingwires* 4 × 1.5 mm
2
or more (H07 RN-F or 60245 IEC 66)
* Number of wire × wire size
Outdoor Unit
11
L
N
22
33
Earth
Leakage circuit breaker
30 mA
Input power
220-240 V ~, 50 Hz
Hydro Unit
29-EN
30-EN
<HWT-***H8(R)W>
Outdoor Unit
Leakage breaker
Input power
380-400 V 3N~, 50 Hz
Hydro Unit
Earth