Water Connections - Kingspan KHP0041 Installation And Maintenance Manual

Water connections

Water Connections
Make the plate heat exchanger hydraulic connections
with the necessary components, using material which will
guarantee that the screwed joints are leakproof. The typical
hydraulic circuit diagram shows a typical water circuit
installation in an air conditioning system.
recommendations must be taken into account:
1. The pump must be fitted immediately before the heat
exchanger and after the connection to the system return
(unit without hydronic module).
2. It is advisable to install shut-off valves to allow isolation
of the most important circuit components, as well as the
heat exchanger itself.
These valves (ball, globe or butterfly valves) should
produce a minimum loss of charge when they are open.
3. Provide unit and system drains and vents at the lowest
system point.
4. Install purges in the higher sections of the installation.
pump on the return circuit. Leaving approx 200mm to
avoid any turbulence from pump
6. All piping must be adequately insulated and supported.
Installation of the following components is obligatory:
1. The presence of particles in the water can lead to
obstructions in the heat exchanger. It is therefore
necessary to protect the heat exchanger inlet with an
extractable mesh filter. The filter mesh gauge must be
at least 10 mesh/cm2.
2. After assembling the system, or repairing the circuit,
the whole system must be thoroughly cleaned with
special attention paid to the state of the filters.
flowmeter/setter installed after the pump
(see fig 9 item 11).
4. When water has to reach temperatures below 5°C, or the
equipment is installed in areas subject to temperatures
below 0°C, it is necessary to mix water with inhibited
monopropolyne glycol in suitable quantity.
Pipe water content
Internal Diameter
copper 12 mm
14 mm
16 mm
20 mm
25 mm
32 mm
Integrated water circuit - Safety Devices
1 Automatic valve with air vent
steel 12.7 mm (1/2'')" "
3 Pressure releif valve (300kPa, outlet 1/2') 16.3 mm (5/8'')" "
4 Temperature probe
21.7 mm (7/8'')" "
27.4 mm (11/16'')" "
12
Outer diameter Liters / meter
14 mm 0,11 l/m
16 mm 0,15 l/m
18 mm 0,20 l/m
22 mm 0,31 l/m
28 mm 0,49 l/m
35 mm 0,80 l/m
3/8'' Gas 0,13 l/m
1/2'' Gas 0,21 l/m
3/4'' Gas 0,37 l/m
1" Gas 0,59 l/m
System cleaning and Water Characteristics
In the case of a new installation, or cleaning the circuit,
it is necessary to perform a preventive cleaning of the
system.In order to guarantee the good operation of the
product,each time you clean the system, replace the
water or add glycol, check that the liquid appears clear,
without visibleimpurities and that the hardness is less
than 20 °f.
Fig. 8 - Integrated water circuit
1. Automatic valve with air vent
2.
3. Pressure releif valve (300kPa, outlet 1/2')
4. Temperature probe
Unit
Nominal water Std l/s
flow
Working Max kPa
pressure
Min kPa
Difference in Max m
level with unit
at lowest level
(Fig. 8/9)
Aeromax Plus
4kw 6kw 8kw 12kw 15kw
0.2 0.28 0.33 0.58 0.69
300 300 300 300 300
120 120 120 120 120
20 20 20 20 20