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| Rinnai INFINITY N-Series installation guide 02-20
PCB interface and functions
PCB
Controller
connector
To
external
water
controllers
1
6
4
7
5
10
2
3
9
11
12
8
1
Plastic PCB cover (PCB interface layout
guide
Can be rotated to gain access to PCB
(DO NOT REMOVE)
2
Push button A (PB-A)
Mode button, places the PCB into programming
mode
3
Push button B (PB-B)
DO NOT USE
(PCB transfer or combustion setting mode)
4
Up/down buttons
Menu button, cycles through available menu
options—refer commissioning sheet
5
On/Off button
Value button, cycles through available menu
values—refer commissioning sheet
6
LED digital display
Displays menu and values
7
Priority button
DO NOT USE
(Change priority to another remote controller)
8
Accessory port (controllers)
Used for connecting additional controllers
9
Accessory ports (in/out)
Cascade cable connection
10
Communication interface socket
Data transfer—commercial use only
11
Control module socket
Connects PCB to the control module via
dedicated wiring harness
12
Accessory port
EZ Connect connection
Rinnai N-Series water heaters are fitted with a mounted control module that is connected by
a dedicated wiring harness to the PCB. The control module cannot be removed or relocated
externally.
When the water heater is placed into programming mode the control module becomes the
programming interface. For internal models a cutout is provided in the appliance cover, which
allows access to the control module by the end user. When not in programming mode the control
module has the same functions as the Compact controller. For external models there is no cutout
in the appliance cover (no access for the end user). When not in programming mode the control
module acts as a ‘status monitor’ for the appliance.
