Manual 2100-193
Page 15
COMPRESSOR CUTOFF THERMOSTAT
AND OUTDOOR THERMOSTATS
Heat pump compressor operation at outdoor
temperatures below 0° F are neither desirable nor
advantageous in terms of efficiency. Since most
equipment at the time of manufacture is not designated
for any specific destination of the country and most of
the equipment is installed in areas not approaching the
lower outdoor temperature range, the compressor
cutoffs are not factory installed.
Outdoor thermostats are available to hold off various
banks of electric heat until needed as determined by
outdoor temperature. The set point of either type of
thermostat is variable with geographic region and sizing
of the heating equipment to the structure. Utilization of
the Heating Application Data and the heat loss
calculation of the building are useful in determining the
correct set points.
COMPRESSOR CUTOFF AND OUTDOOR
THERMOSTAT WIRING
Shown in Figures 11 and 12.
FIGURE 11
4 & 10KW 1-PH - - - 6 & 9KW 3-PH
FIGURE 12
15KW 1-PH & 3-PH
MIS-409
MIS-409
