42JW/AQUASMART
GB - 6
Water connections
Water pressure drop
Water flow, l/s
42JW- l/s
0.2 0.3 0.4 0.5 0.6 0.8 1.0
05H kPa12274465–––
09H kPa 6 12 21 32 45 78 –
16H kPa4 7 1118254466
Make the heat exchanger water connections with the necessary
components, using material which will guarantee that the screwed
joints are leakproof.
Figure shows a typical water circuit installation in an air
conditioning system.
For an application with a water circuit, the lollowing
recommendations must be taken into considerationt:
1. The water pump should pump into the evaporator, and draw from
the installation side.
2. It is advisable to install shut-off valves to allow isolation of the
most important circuit components as well as the chiller itself.
These valves (ball, globe and butterfly valves) should produce a
minimum loss of charge when they are open.
3. Provide unit and system drains and vents at the highest system
point.
4. Install purge valves in the highest part of the circuit.
LEGEND
Water chiller
42JW fan coil units
Water circulating pump
Inertial accumulator
Expansion vessel
Pressure gauges
Manual shut-off valves
Mesh filter
Pressure ports
Thermometers
Flow switch
Automatic purge
Drain
Charge valve
Flexible coupling
5. Pressure ports and pressure gauges should be installed
upstream and downstream of the water pump.
6. Thermometers should be installed in the unit water inlet and
outlet.
7. The installation must include a flow switch in a straight horizontal
pipe run, with a length of a minimum of 5 times the line diameter
before and after the switch.
The flow switch must be located in the inlet piping of the
refrigerant-water heat exchanger.
If this is not possible, the installation must include a protection
system, activated when no water circulates in the heat
exchanger.
It is essential to ensure sufficient water circulation in the heat
exchanger.
8. All piping must be adequately insulated.
9. After the installation or after circuit repair the whole installation
must be cleaned completely, with special attention to the filters.
To Next Page
Loading...
