Blue Box - 30
The water inlet and outlet must be connected in the positions indicated
as labelled on the unit.
4.5 CONDENSER WATER PIPE CONNECTIONS
All units are provided with stainless steel threaded hydraulic connections. Sizes and locations are indicated in the
dimensional data at the end of this manual.
For units equipped with more than one compressor, water inlets and outlets must be manifolded together.
For connection locations and dimensions see the dimensional drawings at the end of this manual.
4.5.1 Pressostatic valve
When using city water, rather than a cooling tower, it is recommended that a pressostatic valve is installed to
ensure the correct operation of the unit.
The pressostatic valve is also recommended for closed circuit installations. This valve guarantees regular operation
of the unit with changing condenser water conditions (for example when restarting after a weekend pause). The
pressostatic valve is absolutely necessary if the tower water entering into the condenser can decrease below 20
°C (see figure 5). The pressostatic valve must provide a condensing pressure higher than 12.5 bar relative.
Consult Blue Box for further information.
All units are equipped with plate heat exchangers. It is compulsory to
install a metallic filter, on the water inlet piping, with a mesh not larger
than 1 mm. If a filter is not installed the warranty will be terminated
immediately.
Caution: When making hydraulic connections never use naked flames
close to or inside the unit.
We strongly recommend installing a pressure relief valve on the hydraulic
circuit. In the event of serious system breakdown or emergency (e.g.
fire), the relief valve will make it possible to depressurise the system
thus forestalling possible pipe bursts. Always connect the relief valve
outlet to a pipe of diameter no smaller than the valve opening, and route
it to a location in which persons are protected from the jet of expelled
water.
IN
ACQUA CONDENSAZIONE
CONDENSER WATER
ACQUA CONDENSAZIONE
Summary of Contents for SIGMA 2002
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Page 100: ...Blue Box 94 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 14 4 26 4...
Page 101: ...Blue Box 95 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 3 2 8 2 14 4 16 4...
Page 102: ...Blue Box 96 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 9 2 13 2 18 4 26 4...
Page 103: ...Blue Box 97 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE SIGMA 2002 LE DC MODELS 3 2 26 4...
Page 104: ...Blue Box 98 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE HP MODELS 3 2 26 4...
Page 105: ...Blue Box 99 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 3 2 13 2...
Page 106: ...Blue Box 100 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 14 4 26 4...
Page 107: ...Blue Box 101 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 3 2 13 2...
Page 108: ...Blue Box 102 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 14 4 26 4...
Page 109: ...Blue Box 103 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 3 2 13 2...
Page 110: ...Blue Box 104 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 14 4 26 4...
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