41
With water temperatures below 6°C, the unit should be operated with a water/antifreeze mixture. The service set
point and antifreeze thermostat must be reset as follows:
- The service set point of controller should be set to 5 °C above the desired evaporator delivery temperature.
- The antifreeze thermostat should be set at least 3 - 5 °C above the mixture freezing point.
These values are generally factory set.
The percentage of antifreeze (by weight) depends on the desired chilled water temperature (see Table III).
Standard units are not designed to operate at evaporator delivery
Standard units are not designed to operate at evaporator delivery
Standard units are not designed to operate at evaporator delivery
Standard units are not designed to operate at evaporator delivery
Standard units are not designed to operate at evaporator delivery
temperatures below 6°C. The unit may require modification to operate
temperatures below 6°C. The unit may require modification to operate
temperatures below 6°C. The unit may require modification to operate
temperatures below 6°C. The unit may require modification to operate
temperatures below 6°C. The unit may require modification to operate
below this limit. Contact our technical department for recommendations.
below this limit. Contact our technical department for recommendations.
below this limit. Contact our technical department for recommendations.
below this limit. Contact our technical department for recommendations.
below this limit. Contact our technical department for recommendations.
6.6 OPERATION WITH LOW TEMPERATURE WATER
6.6 OPERATION WITH LOW TEMPERATURE WATER
6.6 OPERATION WITH LOW TEMPERATURE WATER
6.6 OPERATION WITH LOW TEMPERATURE WATER
6.6 OPERATION WITH LOW TEMPERATURE WATER
“ST” versions using glycole percentage higher than 30% must be ordered
“ST” versions using glycole percentage higher than 30% must be ordered
“ST” versions using glycole percentage higher than 30% must be ordered
“ST” versions using glycole percentage higher than 30% must be ordered
“ST” versions using glycole percentage higher than 30% must be ordered
with special pum seals.
with special pum seals.
with special pum seals.
with special pum seals.
with special pum seals.
If ambient temperatures lower than the freezing point of water can be
If ambient temperatures lower than the freezing point of water can be
If ambient temperatures lower than the freezing point of water can be
If ambient temperatures lower than the freezing point of water can be
If ambient temperatures lower than the freezing point of water can be
expected, antifreeze mixtures in the above indicated percentage must
expected, antifreeze mixtures in the above indicated percentage must
expected, antifreeze mixtures in the above indicated percentage must
expected, antifreeze mixtures in the above indicated percentage must
expected, antifreeze mixtures in the above indicated percentage must
be utilized.
be utilized.
be utilized.
be utilized.
be utilized.
TABLE III - WATER/ANTIFREEZE MIXTURES FREEZING POINTS
TABLE III - WATER/ANTIFREEZE MIXTURES FREEZING POINTS
TABLE III - WATER/ANTIFREEZE MIXTURES FREEZING POINTS
TABLE III - WATER/ANTIFREEZE MIXTURES FREEZING POINTS
TABLE III - WATER/ANTIFREEZE MIXTURES FREEZING POINTS
LEAVING TEMPERATURE OF LIQUID
OR MIN. AMBIENT TEMPERATURE (°C)
FREEZING POINT (°C)
-5°
-10°
-15°
-20°
-25°
-30°
-35°
-40°
-45°
ANTIFREEZE
ETHYLENE GLYCOL
6
22
30
36
41
46
50
53
56
PROPYLENE GLYCOL
15
25
33
39
44
48
51
54
57
METHANOL
8
14
20
26
30
34
38
41
45
CALCIUM CHLORIDE
9
14
18
21
24
26
27
28
30
TEMPER -20
TEMPER -40
---
TEMPER -60
TIFOXITE
50
60
63
69
73
---
FREEZIUM
10
20
25
30
34
37
40
43
45
PEKASOL 50
59
68
75
81
86
90
---
-30°
-35°
+0°
-5°
-10°
-15°
-40°
% IN WEIGHT
40
50
T -20°C
T -40°C
T -60°C
---
-20°
-25°
Summary of Contents for KAPPA V 2001
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