HP1100/1500COMPACT PREMIUM
I n s t a l l a t i o n a n d u s e r m a n u a l
P a g e
1 3
/ 2 8
V e r s i o n : 0 1 / 2 0 1 8
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4.2
Connection to water filtration circuit
The heat pump must be connected to water circuit (filtration circuit) of the swimming pool in order to
provide desired heating/cooling performance. The water flow through the exchanger of the heat pump
must be in accordance with the designed value (
see chapter 3.1 Technical data). Normally the heat
pump is connected through a by-pass. It is then possible to adjust the water flow accordingly as
filtration pumps may have different water flow performances.
The by-pass consists of 3 valves connected as shown in the picture below. Water normally flows from
the filtration pump (right side) to the swimming pool (left side) through Valve 1. Heat pump is
connected through Valve 2 (heat pump inlet) and Valve 3 (heat pump outlet).
Complete closure of Valves 2 and 3 with Valve 1 fully open means no water flow through the heat
pump which means no heating or cooling provided by the heat pump.
Complete closure of Valve 1 with Valve 2 and 3 fully open means maximum amount of water flowing
through the heat pump.
Normally the by-pass is set as shown on below picture.
The heat pump is equipped with 2 threads enabling the connection of input and output fitting (d50).
For connection with the filtration circuit use the d50 PVC pipe or 50/38mm adapters (6/4”). Please
refer
to section 3.4 Description of the basic parts in order to make sure which thread is water input
and which water output. It is advised to apply lubricating oil on threads before tightening the
connection.
Please consider using fast connector for the heat pump inlet and outlet in order to make the
disconnection of the heat pump from the rest of the filtration circuit simple (for water draining from
the heat pump before winter time and for service purposes).
The heat pump must be connected to the filtration circuit of the swimming pool behind the filter and
in front of the device for water conditioning (automatic chlorine dozing machine, ozone machine).
For illustration please refer to Scheme: Connection of the compact heat pump into the water
filtration circuit of the swimming pool on page 15.
Note:
In case of using the automatic chlorine dozing machine in the filtration circuit it is
necessary to install a backward titanium spring in front of it. If this valve is missing, by shutting
down the filtration, the chlorine concentration around the heat pump exchanger may be
increased to critical level and exceed the allowable level (3 ppm) causing damages.
Back to the swimming
pool
From the filtration
pump / swimming
pool
Connection of the by-pass
VALVE
VALVE
VALVE
To the heat pump
From the heat pump
