Hatco Powermite PMG-100 Manuel D'installation Et D'utilisation page 12

INSTALLATION
Temperature/Pressure Gauges
Hatco requires a temperature/pressure gauge be installed in
both the inlet and outlet lines to the Booster Water Heater. These
gauges provide an instant visual check of the water temperature
and pressure entering and leaving the Booster Water Heater.
The visual check is helpful in eliminating unnecessary service
calls.
Install the temperature sensing bulb in the water system. See
the illustrations below for methods of installation.
3/4" nominal
copper pipe
Recommended Temperature/Pressure Gauge Installation
Center bottom
of sensor
in copper pipe
3/4" nominal
copper pipe
3/4" x 1/2" x 3/4"
copper tee
Alternate Temperature/Pressure Gauge Installation
Hatco requires that two temperature/pressure gauges
(Hatco P/N 03.01.003.00) be installed to ensure proper
operation. Install one in the supply line before the pressure
reducing valve and one in the outlet line as close to the
Booster Water Heater as possible. This provides a visual
check of the water temperature and pressure before and
after the water heater.
Temperature/
pressure gauge
with 1/2"
pipe thread
1/2" copper
female fitting
adapter
Temperature
sensing element
Temperature/
pressure gauge
with 1/2"
pipe thread
1/2" copper
female fitting
adapter
Temperature
sensing element
CAUTION
Pressure Reducing Valve
Proper operation of most dishmachine rinse nozzles require
available water flow pressure at the nozzle to be 20 psi.
If water pressure available to the Booster Water Heater inlet
is over 20 psi, a pressure reducing valve with bypass must
be installed in the hot water supply line to the Booster Water
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 Water 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 Water Heaters, a water backflow protector shall
also be installed.
NOTE: If a check valve or water backflow protector is installed
and cannot be removed, install a back pressure relief
valve (Hatco P/N 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 Water Heater.
Discharge must be to open site drain.
12
English
PMG100200M-0222