Guidelines For Additional Temperature Controllers - Rinnai SENSEI RU199i Manual De Instalación Y Operación

6.4 Guidelines for Additional Temperature Controllers

All Rinnai Tankless Water Heaters are equipped with an
integrated digital temperature controller that allows for a
precise water temperature set-point. Additional digital
temperature controllers are available as accessories and
must be purchased separately (detailed installation steps
included with purchase).
Wiring
A maximum of four temperature controllers can be
installed for a water heater or bank of water heaters; this
includes the controller built into a Rinnai Tankless Water
Heater. Controllers can only be wired in parallel; they
cannot be wired in series.
A maximum of four temperature
controllers can be installed for a water
heater or bank of water heaters
(including the built-in controller)
Wiring illustration
(Detailed wiring instructions included with
temperature controller package)
Rinnai Tankless Water Heater Installation and Operation Manual
Four Temperature
Controllers
Connect the controller
cable to the mating
terminal at the bottom
right side of the PC
Board.
Cable Lengths and Sizes
The temperature controller cable should be a
non-polarized two-core cable with a minimum gauge of
22 AWG. The maximum cable length from each
temperature controller to the water heater depends on
the total number of wired controllers connected to the
water heater.
Number of Wired
Controllers Each Controller to Water Heater
1
2
3 or 4 *
* Only three additional controllers can be wired to
the water heater.
Location
•
The temperature controller should be out of
reach of small children.
•
Avoid locations where the temperature controller
may become hot (near an oven or radiant heater).
•
Avoid locations in direct sunlight. The digital
display may be difficult to read in direct sunlight.
•
Avoid locations where the temperature controller
could be splashed with liquids.
•
Do not install in locations where the temperature
controller can be adjusted by the public.
Maximum Cable Length for
328 ft (100 m)
164 ft (50 m)
65 ft (20 m)
69