Installation Manual

2. Optional Accessories
Name Usage Qty
Remote controller
RC-9018M
* Always necessary. 1
Remote controller Cord
RC-CORD10
RC-CORD26
-The communication cord between the system controller and the
remote controller can be lengthened up to a maximum total length
of 450 feet.
-The communication cord between the system controller and each
water heater can be lengthened up to a maximum total length of
45 feet.
Total number of units
in system + 1
NWC-ADAPTER
(NAW-1 US)
For remote monitoring the multi-unit system through the Mobile App. 1
For the combined use pattern
Number of units System controller Remote controller
7 to 12 SCU-401-12M
RC-9018M
13 to 24 SCU-401-24M
Part Shape Qty Part Shape Qty
Anchoring Screw 5
*1
1
1. Included Accessories
Check for any missing items
before starting installation.
*1 Attached in the system controller.
When two or more multi-unit systems are installed in parallel
One remote controller is necessary for each multi-unit system (i. e. 3 multi-unit systems will require 3 system
controllers and 3 remote controllers). Each system will have separately wired remote controller cords.
A. When there is no circulation pipe (standard type)
CAUTION : Be sure to use the remote controller cord as listed above. If a different cord is used, the equipment may fail or not operate
properly.
Assembly &
Setup Instructions
Condition Number of units System controller Remote controller
Recirculation type
(circulation heat-retention with external pump)
7 to 12 SCU-401-12M
RC-9018M
13 to 24 SCU-401-24M
Storage Tank Recirculation type
(circulation heat-retention with external pump)
7 to 12 SCU-401-12M
13 to 24 SCU-401-24M
B. When there is a circulation pipe
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