Rinnai RUS75e series User Manual

44 KCM Series Manual
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
Controller Locaon
Cable Lengths and Sizes
 The controller should be out of reach of small
children.
 Avoid locaons where the controller may become
hot (near an oven or radiant heater).
 Avoid locaons in direct sunlight. The digital
display may be dicult to read in direct sunlight.
 Avoid locaons where the temperature controller
could be splashed with liquids.
 Do not install in locaons where the controller
can be adjusted by the public.
The cable for the temperature controller should be a
non-polarized two-core cable with a minimum gauge
of 22 AWG. The maximum cable length from each
controller to the water heater depends on the total
number of wired controllers connected to the water
heater.
Number of Wired
Controllers
Maximum Cable Length for each
Controller to Water Heater
1 328  (100 m)
2 164  (50 m)
3 or 4 65  (20 m)
Turn the power o. Do not aempt to connect the
temperature controller(s) with the power on.
Although the controller is a low voltage device, there
is 120 volt potenal next to the temperature
controller connecons inside the unit.
Do not connect the temperature controller to the
120VAC terminals provided for the oponal solenoid
drain valves.
WARNING
Conguraons
A maximum of 4 temperature controllers can be
installed for a water heater or bank of water heaters.
Controllers can only be wired in parallel. Controllers
cannot be wired in series.
The 4 temperature controllers can consist of mulple
MC-91-2.
(MC-91-1 should not be installed on a unit that
already has an MC-91-2 connected)
If 4 MC-91-2’s are installed, simultaneously press the
Priority and On/O buons on the fourth controller
unl a beep sounds.
Do not install MC-100V and BC-100V.
Wire controllers in parallel
The units referenced in this manual do not include a
temperature controller.

Rinnai RUS75e series Specifications

General

Brand	Rinnai
Model	RUS75e series
Category	Water Heater
Language	English