Water System Piping - Polaris GAS WATER HEATER Installation, Operation And Service Manual

Install a temperature and pressure relief valve and discharge line in
6.
the opening marked "T & P RELIEF VALVE". Install as specified under
"Temperature and Pressure Relief Valve, pg. 14".
After piping has been properly installed, allow the tank to fill with
7.
water and check all connections for leaks. Open the nearest hot
water faucet for 3 minutes to purge the water lines of air and
sediment to insure complete filling of the tank.
IMPORTANT: Do not fail to install a suitable drain pan under the
water heater and pipe the drain line to an adequate drain. See Site
Location, page 6, for details.
If this water heater is to be used to supply both space heating and
domestic potable (drinking) water (Fig. 14), the instructions listed below
must be followed.
•
Be sure to follow the manual(s) shipped with the air handler system.
Pump and check valve may be integrated into the air handler.
•
This water heater is not to be used as a replacement for an
existing boiler installation.
•
If the space heating system requires water temperatures in excess of
120°F, a tempering valve or an anti-scald device should be installed
per its manufacturer's instructions in the domestic (potable) hot
water supply to limit the risk of scald injury.
16
WATER SYSTEM PIPING (CONT.)
Also see "General Information, Water System Piping", pg. 14 - 16 for
additional instructions on the safe and correct installation and operation of
this water heater.
If this water heater is used as a SOLAR STORAGE HEATER OR AS A
BACKUP FOR THE SOLAR SYSTEM, the water supply temperatures to
the water heater tank may be in excess of 120°F. A tempering valve or
other temperature limiting valve must be installed in the water supply line
to limit the supply temperature to 120°F. An anti-scald device must be
installed in the domestic hot water supply line to limit the risk of scald
injury.
Solar Water Heating Systems can often supply water with temperatures
exceeding 190°F and may result in water heater malfunction. Please read
the following warning.
WARNING
WATER SUPPLY TO THIS HEATER MUST NOT EXCEED 190°F.
WATER TEMPERATURE IN EXCESS OF 190°F WILL CAUSE THE
HIGH LIMIT CONTROL TO OPEN AND SHUT OFF THE GAS SUPPLY
TO THE UNIT.
See Figure below for typical water piping installation for Polaris water
heater used in conjunction with a solar storage tank.