Water And Space Heating Application - Rheem 199,000 Btu/hr User Manual

DANGER
When this system requires
water for space heating at
elevated temperatures (above
125°F [52°C]), a mixing or
tempering valve MUST BE
installed in the hot water
supply line to the house in
order to reduce the scald
hazard potential.
1-22
TANKLESS WATER HEATER 199
1.6 WATER AND SPACE HEATING
APPLICATION
The following guidelines must be followed when using the water heater for both
potable water heating and space heating.
●
Any piping or components used in the installation of this water heater in a
combination potable water and space heating application must be suitable for
use with drinking water.
●
If this water heater is installed in an application intended to supply domestic
hot water needs and hot water for space heating purposes, DO NOT connect
the water heater to an existing heating unit or components of a heating
system that have previously been used with a nondrinking water system.
●
Toxic chemicals such as those used for boiler treatment may be present and
will contaminate the drinking water supply causing possible health risks.
Never introduce toxic chemicals, such as glycol and those used for boiler
treatment into the system.
●
This water heater is NOT approved as the dedicated space heating unit.
●
This water heater must be used for combination applications with an air
handler only and not for indoor heating applications.
INSTALLATION AND OPERATION INSTRUCTIONS