Dhw System Piping With Indirect Tank; Indirect Tank Control Options; Guidelines - Rinnai M Series Installation And Operation Manual

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Topics in this section
•

Guidelines

•

Indirect Tank Control Options

This boiler provides DHW through an indirect
tank. The boiler incorporates temperature
control features for the boiler and indirect
tank controls, including indirect tank heating
priority.
•
The piping (including soldering materials)
and components connected to this
appliance must be approved for use in
potable water systems.
•
Purge the water line to remove all debris
and air. Debris will damage the boiler.
•
DHW must not be connected to a system
that was previously used with a non-
potable water heating appliance.
•
DO NOT introduce toxic chemicals such as
those used for boiler water treatment to
the potable water used for central heating
into the DHW system.
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The indirect tank temperature is controlled
through either a thermistor or thermostat.
•
Thermostat (Default): If thermostat
control of the tank is desired, the
thermostat connects to the yellow DHW
screw terminal on the PC Board.
•
Thermistor: If thermistor control of the
tank is desired, connect a 10k NTC
thermistor to the yellow DHW screw
terminal on the PC Board. The thermistor
will automatically be detected.
NOTE:
Do not adjust Parameter 2.5.0. This should
always be set for "ON" when used with an
indirect tank.
DANGER
Hot water can cause first degree burns
with exposure for as little as:
•
3 seconds at 140°F (60°C)
•
20 seconds at 130°F (54°C)
•
8 minutes at 120°F (49°C)
Children, disabled, or elderly are at
highest risk of being scalded. Feel water
before bathing or showering.
Rinnai M-Series Condensing Boiler Solo Manual
Water temperatures
over 125°F (52°C)
can cause severe
burns or scalding
resulting in death.