Hatco POWERMITE PMG-100 Installation, Operating, Service And Parts Manual page 14

INSTALLATION
Temperature/Pressure Gauges
Hatco requires a temperature/pressure gauge be
installed in both the inlet and outlet lines to the
booster heater. These gauges provide an instant
visual check of the water temperature and pressure
entering and leaving the booster heater. The visual
check is helpful in eliminating unnecessary service
calls.
Install the temperature sensing bulb in the water
system. See Figures 2 and 3 for methods of
installation.
Pressure Reducing Valve
Proper operation of most dishwasher rinse nozzles
require available water flow pressure at the nozzle
to be 20 PSI.
If water pressure available to the booster heater
inlet is over 20 PSI, a pressure reducing valve with
bypass must be installed in the hot water supply line
to the booster heater.
The valve supplied by Hatco has a built-in high
pressure bypass which prevents excessive pressure
build-up as the booster heats up.
CAUTION
Pressure regulating valve must have a built-in
high pressure bypass.
Blended Phosphate Water Treatment System
Hatco requires that the Blended Phosphate Water
Treatment System supplied be installed with unions
on the incoming 3/4" water supply line after the
pressure reducing valve and before the booster
heater.
Cartridges supplied have a usage rating of 100,000
gallons of water. To ensure proper operation the
cartridges must be replaced when expired.
NOTE: Product failure caused by liming or sediment
buildup is not covered under warranty.
NOTE: The Commonwealth of Massachusetts
requires that if a water treatment system is
installed in line with the Hatco Booster Heaters,
a water backflow protector shall also be
installed.
Form No. PMG-100/200M-0805
Figure 2. Installation Temperature/Pressure Gauge
Figure 3. Installation Temperature/Pressure Gauge
NOTE: If a check valve or water backflow protector
is installed and cannot be removed install a back
pressure relief
03.02.039.00, set at 125 psi (862 kPa) on the
incoming line between the pressure reducing valve
and the inlet to the booster heater. Discharge must
be to open site drain.
12
valve, Hatco part number