Hatco POWERMITE PMG-100 Installation, Operating, Service And Parts Manual page 16

INSTALLATION
NOTE: Be sure water flows through the pressure
reducing valve in the proper direction. Check the
directional arrow. Valve will reduce pressure only
during flow conditions.
A 3/4" union fitting and a drain valve must also be
installed to allow for easy servicing.
The temperature/pressure relief valve must be
installed into one of two locations on the heater:
either the right side or the back of the unit. See
Figure 4 for exact locations.
*
Not Supplied With Booster Heater
Optional Accessory
Figure 4. Plumbing Connections – PMG-100/200 Gas Booster Heaters
Form No. PMG-100/200M-0805
To prevent water leakage and damage to the unit,
the location for the temperature/pressure relief valve
that is not used must be plugged. (One plug is
supplied by Hatco
temperature/pressure fittings MUST NOT be
plugged.
†
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.
14
with the heater.) Both