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Hot Water Heat with Rinnai REU-OPU3
R
V/W2
W1
OPU
Y2
Y1
G
C
DH
0
1
2
NOTE
Connect common (C) wire only if required. See
thermostat installation instructions for more
information. See REU-OPU3 instructions for
more wiring configurations.
Canadian Air Handler Installation and Operation Manual
R
Install the Rinnai Tankless Water Heater or
Boiler by following the Installation and Operation
Manual supplied with the unit.
V/W2
Water Potability
This unit can be installed in hot water domestic
loop.
The hot water coil is certified to NSF 372.
G
At install, make sure all components are certified
and that all materials and solders are free of lead
and contaminants.
C
To satisfy many jurisdictions regulations, the con-
trol allows to set a time of pump inactivity to initi-
ate a pumping cycle and avoid stagnating water.
Make sure to set this parameter according your
local and codes.
WARNING
When the unit is off for a long period of time,
precautions to flush, clean and disinfect the hot
water loop shall be made.
Failure to do so can result in sickness and death.
Biocontamination hazard.
29
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