Pipe Connections - Nibe POOL 40 Installer Manual

Pipe connections

GENERAL
When POOL 40 is connected to the climate unit, the
heating circuit must be supplied with an external circu-
lation pump. This is because, during pool charging, the
heat pump's internal circulation pump maintains the
flow through the pool heat exchanger. The extra/external
circulation pump (GP10) maintains the flow in the heat-
ing circuit, so the supply temperature sensor (BT25) can
measure the temperature correctly.
INSTALLATION PRINCIPLE
Shuttle valve
The reversing valve's permitted positions.
SHUTTLE VALVE
• Install the reversing valve (QN19) with port AB as in-
coming supply line from the heat pump, port A to-
wards the pool and port B towards the heating system.
Install it so that port AB is open towards port B when
the motor is in standby mode. In the event of a signal,
port AB opens towards port A.
B
POOL 40 | GB
A
AB
TEMPERATURE SENSOR
• The pool sensor (BT51) is placed on the return line
from the pool.
• The external supply temperature sensor (BT25) is
located on the supply line to the climate system, after
the circulation pump (GP10).
Install the temperature sensors with cable ties with the
heat conducting paste and aluminium tape. Then insulate
with supplied insulation tape.
NOTE
Sensor and communication cables must not
be placed near power cables.
FUNCTION
Heating of the pool is prioritised according to selected
settings in the heat pump.
If the pool sensor (BT51) is not connected, pool charging
is not permitted to start.
The heating medium flow is adjusted so that the tem-
perature difference over the pool heat exchanger is
10–15 °C. The setting is made in menu 5.1.11.
17