Installation Guide

128 Rinnai I-Series Condensing Boiler Combi Manual
• The temperature controller should be out of reach of small children.
• Avoid locaons where the temperature controller may become hot (near an oven or heat
emier).
• 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 temperature controller can be adjusted by the public.
The MC-601 controller is available as an accessory and must be purchased separately (detailed
installaon instrucons are included with controller purchase).
When an MC-601 controller is connected to the boiler, the set temperature of DHW can be
changed on the controller, rather than the boiler.
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 boiler depends on
the total number of wired controllers connected to the boiler.
Number of Wired
Controllers
Maximum Cable Length for
Each Controller to Boiler
1 N/A (Included on Boiler)
2 164 Ft (50 m)
3 65 Ft (20 m)
Turn the power o. Do not aempt to connect the temperature controllers 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.
When a technician is performing maintenance, the MC-601 controller should not be used. The
MC-601 controller is only to be used for seng the DHW temperature and be selected as the
priority controller. Pressing the “Priority” buon on the MC-601 controller while in priority will
change the priority status to the integrated controller on the boiler. If priority is desired again
on the MC-601 controller, press the “Priority” buon again. The “In Use” indicator on the MC-
601 controller will display only during DHW operaon and not indicate CH operaon or freeze
protecon.
IMPORTANT
WARNING