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INSTALLATION AND OPERATION MANUAL
Description of the System
The Mueller PAC Fre-Heater Model AL is designed to recover heat
removed by refrigeration or air conditioning systems and to utilize that
heat for heating water. It is a heat recovery system which heats and
stores hot water all in one unit. It is easily connected to an existing
refrigeration unit, either air or water cooled. PAC Fre-Heater is a de-
superheater which removes most or all of the latent heat of the hot
discharged gas from the compressor and uses the existing condenser to
remove the remaining heat and condense the refrigerant. It is not
intended to and should not be used to totally replace the normal air- or
water-cooled condenser.
PAC water tanks are rated for 150 psi working pressure and refrigeration
circuits are rated for a maximum working pressure of 400 psi.
PAC have a placement for supporting heater by the placement of this
element located in the under of the tank. The placement of this element
allows the maximum utilization of the refrigerant heat recovery system
and minimizes the usage of electricity in directly heating the water.
The outer jacket of all PAC Fre-Heaters is highly corrosion-resistant
stainless steel and will remain bright and rust-free with a minimum
of care. Do not use abrasive cleaning materials or compounds on the
outer jacket as they will scratch the surface. After using any cleaning
compounds always rinse with clear water. In coastal areas where the
air contains a high salt content, the bright appearance of the Fre-Heater
can be maintained by rubbing it with oil or a light grease as soon as it is
installed.
Capacity
PAC Fre-Heater is designed for use with air- or water-cooled
refrigeration units. The size of the units and refrigeration systems on
which each model may be used are shown in Table 1.
PAC HEAT RECOVERY WATER HEATER
INTRODUCTION
2
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