15
3. Installation
The hydraulic connections of heat pump 01, must be carried out using all necessary components and completed
with materials able to guarantee water seal of the threaded joints. The diagram typical of hydraulic circuit shows
applications in the air conditioning field.
The hydraulic circuit must be completed following the recommendations below:
1. It is advised to include shut-off valves allowing isolation of the most important components of the system.
These valves, that can be ball, globe or butterfly, must be dimensioned to allow the smallest load loss,
possible when in opening position.
2. The system must have drainage in the lowest points.
3. Air vents must be included in the highest points of the system.
4. Gauges and pressure couplings must be installed upstream and downstream of the pump.
5. All piping must be adequately insulated and supported.
6. The presence of solid particles in the water can obstruct the heater. Therefore, protect the exchanger using a
removable mesh filter. The gauge of the filter net must be of at least 10 meshes/cm
2
.
7. After system assembly flush and clean the whole system, paying particular attention to the state of the filter.
8. In cases where water must be cooled at temperatures below 5°C, of if the device is installed in areas subject to
temperatures below 0°C, it is essential to mix water with an adequate amount of monoethylene glycol inhibitor.
9. In the event of new installation or emptying of the circuit, preventively clean the system. In order to guarantee
good product operation, after every cleaning operation, water replacement or glycol addition, check the liquid is
clear, without visible impurities and the hardness is below 20°.
% Monoethylene glycol inhibitor
10%
20%
30%
40%
Freezing temperature *
-4°C
-9°C
-15°C
-23°C
Correction factor
Capacity
0,996
0,991
0,983
0,974
Power absorbed
0,990
0,978
0,964
1,008
Pressure drop
1,003
1,010
1,020
1,033
(*) The temperature values are indicative. Always refer to the temperatures given for the specific product used.
Hydraulic connections
Anti-freeze concentration in the system
Summary of Contents for AEYC-0639U-CH
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