Installation and operation manual
5
RKBW1
Heater kit for air to water heat pump system
4PW58904-1
Connecting the water circuits
For details on connecting the water circuits and charging the system
with water refer to the indoor unit installation manual.
1
If required (see "Safety devices" on page 3) connect a pressure
relief valve on the inlet of the heater kit (field supply, opening
pressure maximum 3 bar).
2
Connect the heater water inlet to the space heating water outlet
of the indoor unit. Connect the heater water outlet to the load.
See figure in section "General system setup" on page 2.
3
Charge the system with water.
Field wiring
NOTE
Be careful not to deform the heater piping by using
excessive force when connecting the piping.
Deformation of the piping can cause the heater to
malfunction.
When connecting a pipe to the outlet of the heater kit
hold the flow switch T brass connection in place with a
spanner, to avoid cracking and leaks on the flow switch
connection.
NOTE
Make sure the air purge of the heater is open (at least
2 turns).
CAUTION
■
A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with
relevant local laws and regulations.
■
Switch off the power supply before making any
connections.
■
Use only copper wires.
■
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
local laws and regulations.
■
Be sure to install the required fuses as mentioned on
the electrical wiring diagram.
■
The field wiring must be carried out in accordance
with the wiring diagram supplied with the heater kit
and the instructions given below.
■
Never squeeze bundled cables and make sure that it
does not come in contact with the piping and sharp
edges.
Make sure no external stress is applied to the terminal
connections.
■
Be sure to use a dedicated power supply. Never use a
power supply shared by another appliance.
■
Be sure to establish an earth. Do not earth the heater
kit to a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
■
Make sure all field wiring is insulated from the heater
kit and piping or can resist temperatures up to 90°C.
■
Be sure to install an earth leakage protector in
accordance with relevant local laws and regulations.
Failure to do so may cause electrical shock.
For V3 models only
■
Equipment complying with EN/IEC 61000-3-12
(a)
■
This equipment complies with EN/IEC 61000-3-11
(b)
provided that the system impedance Z
sys
is less than
or equal to Z
max
at the interface point between the
user's supply and the public system. It is the
responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution
network operator if necessary, that the equipment is
connected only to a supply with a system impedance
Z
sys
less than or equal to Z
max
. Z
max
= 0.29
Ω
(a) European/International Technical Standard setting the limits for harmonic currents
produced by equipment connected to public low-voltage systems with input
current >16 A and
≤
75 A per phase.
(b) European/International Technical Standard setting the limits for voltage changes,
voltage fluctuations and flicker in public low-voltage supply systems for equipment
with rated current
≤
75 A.
4PW58904-1_offset.book Page 5 Monday, February 22, 2010 9:59 AM
