Bradford White S-DW2-U65T6FRN - Manual

INSTALLATION INSTRUCTION - SUPPLEMENT SHEET
HEATING WITH THE SOLAR WATER HEATER WITH GAS BACKUP
POTABLE AND SOLAR HEATING CONNECTIONS
The heat exchanger interior has been designed for non-potable water, such as in a solar heating system. If
replacing an existing water heating appliance, be sure to turn off electrical power, heating fluid and/or gas
supply to the existing appliance.
The solar thermal system connections are identified on the side of the appliance. The use of shut off valves and
unions are recommended for future service convenience. In solar heating systems that are non-drainback, a
suitable expansion tank must be installed. Consult local codes for proper use, sizing and installation of an
expansion tank. DO NOT operate this water heater in a closed system without provisions for controlling
thermal expansion.
Due to the elevated operating temperature that may be obtained with the solar heating system, an ASSE
approved thermostatic mixing valve has been provided and must be installed in the potable water piping
diagram as shown in Figure 1. Directions for proper installation and adjustment are provided in the ASSE
approved thermostatic mixing valve carton.
Warning: Failure to properly install and regulate the provided ASSE approved thermostatic mixing valve may
increase the danger of scald injury and nullify the warranty.
DANGER
Hotter water increases the risk of scald injury. Scalding may occur within 5 seconds at a setting of 140
°F. Water
temperature over 125
°F can cause severe burns or death from scalds. Children, disabled and the elderly are at the
highest risk of being scalded. Please feel the water before bathing or showering.
THERMOSTATIC
MIXING VALVE
POTABLE
TEMPERED
SHUT-OFF VALVE
COLD
SUPPLY
VACUUM BREAKER
Figure 1 – Thermostatic Mixing Valve Piping Diagram for Tempered Water
238-47632-00B REV 09/09