Distance To The Pool; Leading Off Condensation Water; Pipe Connections; Bypass Coupling - Gullberg & Jansson P15 Installationshandbuch

Installation

Distance to the pool

The pool heat pump is normally installed in connection to
the pool's purification system to minimise pipe routing. If the
pipes are insulated heat loses will be minimal provided that
the overall pipe length is less than 30 metres (pool water in
and pool water return). An approximate estimation of the
heat loses over an overall pipe length of 30 metres is 0.6
kW per hour for each 5 degrees of temperature difference
between the pool water and the air surrounding the pipes.
This is equivalent to an increased running time for the heat
pump of 3-5 %.

Leading off condensation water

Outdoor air is cooled in the evaporator by approximately
5-10 degrees. The water vapour then condenses on the
evaporator coil fins. If the air humidity is high this can result
in many litres of water per hour. To counter this, there are
several drainage holes in the base plate to lead off the water.
It is important to consider the position of the unit so that the
condense water can be led off correctly.
!
Do not confuse condense water
for water leakage.

Pipe connections

The pool heat pump is connected to the pool's circulation
system with the help of the supplied 50 mm union couplings.
Screw connections to the heat exchanger must be tightened
by hand.
A bypass coupling must be fitted to adjust the right partial
flow to the pool heat pump.

Bypass coupling

We recommend that a bypass coupling is fitted to all
installations in order to adjust the right partial flow to the
pool heat pump. The right partial flow results in balanced
operation and reduced wear on the heat pump's most
expensive section, the heat exchanger.
1

Parallel coupling of several units

2 3
Adjusting the bypass
Correct adjust of the bypass can be done in different ways.
One of the easiest ways can be summarized as follows:
1. Open all the valves
2. Check parameter A and b, see section 3.
a. If there is no difference in temperature, gradually close
the supply valve until the difference is between 1-2
degrees
b. If the difference is above 2 degrees, gradually close
the bypass valve until the difference is between 1-2
degrees
If the display shows EE3 this means that the flow switch in the
system receives insufficient water, so the bypass valve must
be closed more to increase the flow through the pool heat
pump.
First open all the valves to simplify adjustment of the bypass.
Parallel coupling of several units
To save energy, it is recommended that the temperatures on
the units are set with, e.g. 1 degree difference from unit 1 to
N, 28 °C, 27 °C, 26 °C.... (28-N). When the temperature of the
incoming water is close to the required temperature they will
stop one after another to save energy.
See the figure below for the installation principle.
Sand filter
Circulation pump
Chlorinator
N
72
Bypass valve
Swimming pool