Product specifications

20
C1 K1 G1 P1
% E.G. CAPACITY kW FLOW P.D.
°F °C FACTOR FACTOR RATE FACTOR
10 26.2 -3.2 0.995 0.998 1.019 1.050
15 22.4 -5.3 0.991 0.997 1.030 1.083
20 17.8 -7.9 0.988 0.996 1.044 1.121
25 12.6 -10.8 0.984 0.995 1.060 1.170
30 6.7 -14.1 0.981 0.994 1.077 1.219
35 0.0 -17.8 0.977 0.992 1.097 12.75
40 -8.0 -25.8 0.973 0.991 1.116 1.331
45 -17.5 -27.5 0.968 0.990 1.138 1.398
50 -28.9 -33.8 0.964 0.989 1.161 1.466
C2 K2 G2 P2
% P.G. CAPACITY kW FLOW P.D.
°F °C FACTOR FACTOR RATE FACTOR
10 26.1 -3.3 0.988 0.994 1.005 1.019
15 22.8 -5.1 0.984 0.992 1.008 1.031
20 19.1 -7.2 0.978 0.990 1.010 1.051
25 14.5 -9.7 0.970 0.988 1.015 1.081
30 8.9 -12.8 0.962 0.986 1.021 1.120
35 2.1 -16.6 0.952 0.981 1.033 1.163
40 -6.4 -21.3 0.943 0.978 1.043 1.213
45 -16.6 -27.0 0.933 0.975 1.057 1.269
50 -28.9 -33.8 0.924 0.972 1.073 1.326
Glycol Freeze Protection
If the chiller or fluid piping may be exposed to
temperatures below freezing, glycol protection is
recommended. The recommended protection is 15°F
(8.3°C) below the minimum ambient temperature. Use
only glycol solutions approved for heat exchanger duty.
The use of automotive anti-freeze is not recommended
because they have short-lived inhibitors and fouling of
the vessels will occur. If the equipment is exposed to
freezing temperature and not being used, the vessels
and piping should be drained.
Cooler heaters are provided for protection down to
-20°F (-29°C) minimum ambient but piping must be
protected. A separate 115V service is required for this
protection.
If the equipment is being used for operating conditions
below the water rated vessel capability, glycol should
be used to prevent freeze damage. The freeze
protection level should be 20°F (11°C) lower than the
leaving brine temperature. The use of glycol causes a
performance derate as shown below in Table 4a for
Ethylene Glycol and Table 4b for Propylene Glycol and
needs to be included in the unit selection procedure.
Ta b l e 4 a
Ethylene Glycol
Ta b l e 4 b
Propylene Glycol
FREEZE POINT
FREEZE POINT
APPLICATION DATA (CONT.)