Water Connections - Carrier AquaSnap reversible PLUS 30 AW-Serie Installationsanleitung

Water connections

Hydronic module
The 30AWH__H units are equipped with an integrated
hydronic module that allows fast installation with the aid
of a few external components. The 30AWH__X units, on the
other hand, do not have a circulation pump and expansion
vessel. For this reason, they must be provided outside. In
any case, all the necessary protections and valves are to be
inserted in the water circuit inside the unit.
Refer to Figure 9 for the exact connection of the water
pipes.
Figures 10 and 11 describe the integrated components in
Note: The correct dimensioning of the expansion vessel is
left to the installer as a function of the type of plant.
Note: The discharge of the safety valve can be channeled to
the outside of the machine using the pre-cut holes (see Fig.
4). In this case, it is necessary to provide a open drain funnel.
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.
For an application with a water circuit, the following
recommendations must be taken into account:
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.
system point.
4. Install purges in the higher sections of the installation.
upstream and downstream of the water 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
gauge must be at least 10 mesh/cm
2. After assembling the system, or repairing the circuit, the
whole system must be thoroughly cleaned with special
valve, which must be installed on the delivery pipe
during installation.
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
ethylene glycol in suitable quantity.
6 30AWH
All manuals and user guides at all-guides.com
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Anti-seizing pump
The 30AWH__H units are equipped with protection against
the seizing of the pump motor shaft. To allow this function,
do not empty the system or disconnect the power during
long periods of inactivity.
In any case, if the pump rotor shaft seizes after a long period
of inactivity, the user must do the following to unblock it:
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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 visible
impurities and that the hardness is less than 20 °f.
2 .
Fig. 14
A - Water flow rate (l/s)
B -
Fig. 15
A - Water flow rate, (l/s)
B -
automatic purge valve
flow switch
safety valve (outlet 1/2')
temperature probe
circulation pump
plug to unblock the seizing pump
expansion vessel
automatic valve with air vent
flow switch
safety valve (outlet 1/2')
temperature probe
Disconnect the power
Remove the front panel
Unscrew the shaft-protection plug on the back of the
pump
Insert a screwdriver in the slot and turn the rotor shaft
Remount the protection plug
Reconnect the power
(Fig. 10/11)
(Fig. 14/15)