Sinclair SCV-100EA, Service Manual

Page: 26 / 109

10. Operation Limits
COOLING
DELIVERY WATER TEMPERATURE
E
R
U
T
A
RE
P
ME
T
RI
A
E
DI
S
T
U
O
C
-
-10 4 5 7 15 20
-5
20
35
46
C
HEATING
DELIVERY WATER TEMPERATURE
E
R
U
T
A
RE
P
ME
T
RI
A
E
DI
S
T
U
O
30 45 55
-15
-3
7
27
35
20
C
C
a) Ethylene Glycol Solutions
Water and ethylene glycol solutions used as a thermal vector in the place of water reduce the performance
of the unit. Multiply the performance figures by the values given in the following table.
Freezing point (
°
C)
0 -5 -10 -15 -20 -25
Percentage of ethylene glycol in weight
0 12% 20% 28% 35% 40%
cPf
1 0.98 0.97 0.965 0.96 0.955
cQ
1 1.02 1.04 1.075 1.11 1.14
cdp
1 1.07 1.11 1.18 1.22 1.24
cPf
: correction factor of heating/cooling capacity
cQ
: correction factor of flow rate
cdp
: correction factor of pressure drop
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