49-6000245 Rev. 2
19
COMBINATION POTABLE WATER AND SPACE HEATING
This water heater is suitable for combination potable water and space heating applications; it is not suitable for
space heating alone.
If installed for combination water and space heating, components in both systems must be suitable for potable
water.
DO NOT
connect the water heater to components that have been previously used for space heating
alone, as they may be contaminated with toxic chemicals. Never introduce boiler treatment or other toxic
chemicals into pipes or components connected with the water heater, as this will affect the potable water supply.
If the space heating system
requires water at a temperature
higher than 120°F (49°C),
a mixing valve (meeting the
Standard for Temperature
Actuated Mixing Valves for Hot
Water Distribution Systems, ASSE
1017) must be installed in the
potable hot water line to reduce
the danger of scalding.
Installation must comply with local
and national codes.
NOTE:
A maximum distance of
50’ - 0” from the water heater
to fan coil (developed length)
is required in the state of
Massachusetts.
INST
ALLA
TION INSTRUCTIONS
Installation Instructions
Thermal
Expansion
Tank
Vaccum Relief
Valve
Mixing Valve
Shut-off valve
Cold Water Supply
Space Heater
Water Return
Space Heater
Water Supply
Hot Water
Outlet to
fixtures
