Installation manual
8
RKHBH/X016AB
Indoor unit for air to water heat pump system
4PW50205-1A
I
NSTALLATION
OF
THE
INDOOR
UNIT
Selecting an installation location
The unit is to be wall mounted in an indoor location that meets the
following requirements:
■
The installation location is frost-free.
■
The space around the unit is adequate for servicing. (See
figure 2).
■
The space around the unit allows for sufficient air circulation.
■
There is a provision for condensate drain (only for RKHBX
models with drain pan kit EKHBDP) and pressure relief valve
blow-off.
■
The installation surface is a flat and vertical non-combustible
wall, capable of supporting the operation weight of the unit (see
"Technical specifications" on page 29).
■
There is no danger of fire due to leakage of inflammable gas.
■
All piping lengths and distances have been taken into
consideration.
■
The equipment is not intended for use in a potentially explosive
atmosphere.
Dimensions and service space
Unit of measurement: mm
Dimensions of the wall bracket
Dimensions of the unit, see figure 3
Required service space, see figure 2
Inspecting, handling and unpacking the unit
■
The indoor unit is packed in a cardboard box, fixed by straps on
a wooden pallet.
■
At delivery, the unit must be checked and any damage must be
reported immediately to the carrier claims agent.
■
Check if all indoor unit accessories (see "Accessories" on
page 2) are enclosed.
■
Bring the unit as close as possible to its final installation position
in its original package in order to prevent damage during
transport.
■
The indoor unit weighs approximately 55 kg and should be lifted
by two persons using the two lifting bars provided.
Requirement
Value
Maximum allowable refrigerant piping length between
outdoor unit and indoor unit
75 m
Minimum required refrigerant piping length between
outdoor unit and indoor unit
3 m
(a)
(a) When <5 m, recharging of the outdoor unit is required. Refer to the
installation manual of the outdoor unit.
Maximum allowable height difference between
outdoor unit and indoor unit
30 m
Maximum allowable distance between the 3-way
valve and the indoor unit (only for installations with
domestic hot water tank).
3 m
Maximum allowable distance between the domestic
hot water tank and the indoor unit (only for
installations with domestic hot water tank). The
thermistor cable supplied with the domestic hot water
tank is 12 m in length.
10 m
NOTE
If the installation is equipped with a domestic hot water
tank (optional), please refer to the domestic hot water
tank installation manual.
1
Flexible drain hose
5
Refrigerant gas
connection
2
Water outlet connection
3
Water inlet connection
FBSP
Female British Standard
Pipe
4
Refrigerant liquid
connection
MBSP
Male British Standard
Pipe
10
10
163
163
10
Do not grasp the switch box or piping to lift the unit! Two
lifting bars are provided to lift the unit.
1D_IM_4PW50205-1A.book Page 8 Thursday, January 29, 2009 12:00 PM
