Rinnai RUR98i - Installation of Temperature Controller; Controller Location; Cable Lengths and Sizes

KBP Series Manual 49
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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 Total Max.
Cable Length
MC-195T Only 82  (25 m)
MC-195T, MC91-2 164  (50 m)
MC-195T, MC91-2, MC91-2 164  (50 m)
MC-195T, MC91-2, MC91-2, MC-91-2 164  (50 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 one
MC-195T-US and no more than three MC-91-2
controllers.
MC-91-1 should not be installed on a unit that already
has an MC-91-2 connected.
Wire controllers in parallel
Maximum 4 Controllers
Rinnai
Water
Heater
Maximum 3 MC-91-2
MC-195T