CLIVET WSAT-YES 18.2-20.2 User Manual

11
WSAN-YES 18.2-35.2
M0ST10N19-00
Hydraulic system
The pipes must be designed and manufactured to
limit pressure drops as much as possible, i.e.
optimise performance of the system. Keep the
following to a minimum:
 overall length
 number of bends
 number of vertical changes of direction
If the unit is to replace an existing unit, clean the
system thoroughly: see Sequence of operations on
the following pages .
Water quality
The water quality can be checked by qualified
personnel.
Water with inadequate characteristics can cause:
 pressure drop increase
 energy efficiency decrease
 corrosive symptom increase
Water features:
 within the limits indicated by table
Risk of freeze
 The unit must always be protected from freeze.
Otherwise irreversible damage may occur.
If the unit or the relative water connections can be
subject to temperatures close to 0°C:
 Mix water with ethylene glycol, or
 Safeguard the pipes with heating cables placed
under the insulation, or
 Empty the system in cases of long non-use
Anti-freeze solutions
Consider that the use of anti-freeze solution
determines an increase in a pressure drop.
Make sure that the glycol type utilized is inhibited
(not corrosive) and compatible with the hydraulic
circuit components.
Do not use different glicol mixture (i.e. ethylic with
propylene).
Water flow-rate
The design water flow-rate must be:
 inside the exchanger operating limits (see the
TECHNICAL INFORMATION chapter)
 guaranteed also with variable system conditions
(for example, in systems where some circuits are
bypassed in particular situations)
Minimum system water content
Minimum system water contents are given in the
‘General technical data’ section and they have to be
satisfied to stop the compressor from continuously
switching on and off.
Water filter
Use filter with mesh pitch:
0,5 mm (30 mesh)
 Must be installed immediately in the water input of the
unit, in a position that is easily accessible for cleaning.
 The filter never should be removed, this operation
invalidates the guaranty.
Provide a water treatment system if values fall
outside the limits.
 The warranty does not cover damages caused by
limestone formations, deposits and impurities from the
water supply and/or from failure to clean the systems.
4 WATER CONNECTION
PH 7,5÷9
SO
4
2-
< 100 ppm
HCO
3
-
/SO
4
2-
> 1
Total hardness 4,5 ÷ 8,5 dH
Cl
-
< 50 ppm
PO
4
3-
< 2,0 ppm
NH3 < 0,5 ppm
Free Chlorine < 0,5 ppm
Fe
3
+
< 0,5 ppm
Mn
++
< 0,05 ppm
CO
2
< 50 ppm
H
2
S < 50 ppb
Temperature < 65 °C
Oxygen content < 0.1 ppm

CLIVET WSAT-YES 18.2-20.2 Specifications

General

Brand	CLIVET
Model	WSAT-YES 18.2-20.2
Category	Chiller
Language	English