Rinnai INFINITY N Series User manual

INFINITY N-Series continuous flow water heaters
Installation guide
N56kWe external (REU-N3237WC-ZK)
N56kWi internal (REU-N3237FFC-ZK)

Important
This appliance must be installed in accordance with:
-Manufacturer’s installation instructions
-Current AS/NZS 3000, AS/NZS 3500, AS/NZS 5601.1 and G12/AS1
For use with Natural Gas or Universal LPG as indicated on the
appliance.
Not suitable as a spa or swimming pool heater.
Not suitable for hydronic applications.
Appliance must be installed, commissioned and serviced by an
authorised person, being in New Zealand a licensed gastter.
Warning
Improper installation, adjustment, alteration, service and maintenance
can cause property damage, personal injury or loss of life.
For more information about buying, using, and servicing of Rinnai
appliances call: 0800 RINNAI (0800 746 624).
Rinnai New Zealand Limited
105 Pavilion Drive, Mangere, Auckland
PO Box 53177, Auckland Airport, Auckland 2150
Phone: [phone]
Fax: [phone]
Email: [email protected]
Web: rinnai.co.nz
youtube.com/rinnainz
facebook.com/rinnainz

Specication .........................................................4
Appliance location ................................................5
General installation information............................6
External unit - horizontal obstructions ..................7
Water delivery temperature ..................................8
Connections and ttings .......................................9
Dimensions...........................................................10
Condensate ..........................................................12
Commissioning.....................................................14
PCB interface and functions.................................16
Water controller installation ..................................17
Contents
Before installation:
• Unpack the appliance and check for damage. DO NOT install any damaged items.
• Check all components and that the correct gas type has been supplied.
• Get an overview of the steps required before starting the installation. Failure to follow these
instructions could cause a malfunction of the appliance. This could result in serious injury
and property damage.
• These instructions apply only to the Rinnai N-Series continuous ow water heater models
listed on the cover page of this guide.

4 | Rinnai INFINITY N-Series installation guide 02-20
Specication
Designed and made in Japan, the Rinnai INFINITY N-Series are condensing continuous ow gas
hot water heaters with inbuilt frost protection. They have electronic ignition and require electricity to
operate. The internal unit is a room sealed appliance.
The INFINITY N-Series units are factory preset to 55 °C. They can be preset to deliver higher
temperatures, up to 85 °C, making them ideal for commercial applications.
Specication summary
• Colour Silver
• Input 16-209 MJ/h
• Output 55.5 kW
• E󰀩ciency 97 %
Suitability
Primarily designed for commercial applications,
but can be used for larger hot water capacity
residential projects.
Capacity
Hot water capacity 1.5-37 litres per minute.
Nominal water capacity 32 litres per minute at a
25° rise (1920 L/h).
Connections
Hot water outlet R¾ (20 mm)
Cold water inlet R¾ (20 mm)
Gas supply R¾ (20 mm)
Condensate R½ (15 mm)
Exhaust system
Forced ue
Ignition system
Direct electronic ignition.
Line pressures
NG 1.13-3.0 kPa
LPG 2.75-3.0 kPa
Line pressure maximum
3.5 kPa (maximum standing pressure under
abnormal intermittent conditions is 5.0 kPa).
In the case of commercial metering (i.e. 35-37
kPa coming in), there may be a requirement to
regulate the incoming line pressure down.
Ingress protection rating
IPX5
Power consumption
• Normal: 70 W (NG), 85 W (LPG)
• Automatic frost protection: 154 W (external),
150 W (internal)
• Standby: 2.4 W
Noise level
Internal unit: 49 dB(A)
External unit: 54 dB(A)
NOx af
Less than 50 ppm
Safety devices
• Flame failure
• Boil-dry protection
• Overheat protection (OHS)
• Fusible link
• Pressure relief valve
• Combustion fan rpm check
Water supply
Nominal operating pressure: 300-1000 kPa
Minimum operating pressure: 10 kPa
Minimum water ow: 1.5 litres per minute
Weight: 29 kg
Internal model ueing
The internal N-Series models MUST USE
Rinnai ue components—use of non approved
ue components will result in a dangerous
installation.
The Rinnai N-Series ue system must be
installed in accordance with the Rinnai ue
installation manual provided with the ue kit
and/or components. Refer to the ue manual
for more information and ue conguration
options.

Rinnai INFINITY N-Series installation guide 02-20 | 5
Appliance location
This appliance MUST BE placed as close
as possible to the most frequently used hot
water outlet(s) to minimise the delay for hot
water delivery1. For installations where the
distance between the water heater and outlets
is considerable, a ow and return system can
be used to minimise the waiting time for hot
water delivery. Alternatively multiple appliances
can be strategically placed to serve outlets with
minimal delay.
An AC 230 V, 10 A earthed power point must be
provided adjacent2to the appliance. This power
point must be weatherproof. It must be clear of
the gas and water connections to the appliance
and also the ue exhaust and water pressure
relief valve. The power cord of the appliance is
1.5 m long.
All appliances MUST BE installed to ensure
access can be gained without hazard or
undue di󰀩culty for maintenance and servicing.
Su󰀩cient clearances shall allow access
and removal of all serviceable components.
Appliances should not be mounted more than
2.5 m above the ground or oor level unless
the customer can arrange permanent and safe
access, or can provide another means of safe
access.
The appliance MUST BE mounted on a vertical
structure with the water and gas connections
on the underside pointing downwards.
Location of the ue terminal MUST BE in
accordance with Section 6 and Figure 6.2 of
AS/NZ 5601.
Outdoor (external) models
This appliance is designed for outdoor
installations only. It MUST BE located above
ground in open air with natural ventilation,
without stagnant areas, where gas leakage
and products of combustion can be rapidly
dispersed by wind and natural convection.
Indoor (internal) models
This appliance is for indoor installations only.
They may be installed in an enclosure if the
requirements of AS/NZS 5601.1 are satised.
An enclosure is dened as a compartment,
enclosed area or partitioned o󰀨 space primarily
used for the installation of the appliance.
• DO NOT install in areas where
contaminated air is present.
• Consider, before installation, where air has
the ability to travel within a building.
• Where possible, install the heater in
a sealed space so that it is free of
contaminated indoor air.
It is important a suitable drained catch pan
is tted where damage could be caused by
discharge from the water heater. Provision
must be made for safe disposal of any leaking
water to an external location.
This appliance MUST BE used with the
appropriate Rinnai ue system.
1Rinnai recommend a maximum pipe run of 10 m.
2Power point can be within the pipe cover if a pipe cover is installed—must comply with AS/NZS Wiring rules

6 | Rinnai INFINITY N-Series installation guide 02-20
General installation information
Securing the Rinnai INFINITY
The wall structure on which units are mounted
MUST BE capable of supporting the weight
of the appliance (29 kg) and associated pipe
work.
Ensure that suitable xing screws or bolts
are used to secure the unit to the wall, in
accordance with AS/NZS 5601 section 6.
Wooden plugs shall not be used.
The top bracket has a keyhole slot so that the
appliance can be positioned by hanging it on
one screw. Once in position the appliance can
be secured with appropriate xings.
The appliance can be mounted directly against
the wall or structure. There is no need to use
non-combustible sheeting or leave an air gap
between the appliance back panel and the wall
or structure to meet the temperature hazard
requirements of AS/NZS 5601.
Pipe sizing
If the gas pipe sizing is insu󰀩cient the
appliance won’t perform properly. Gas pipe
sizing must consider the gas input into this
appliance as well as other gas appliances in
the premises. The gas meter and regulator
must be specied for this gas rate.
An approved sizing chart such as the one in
AS/NZS 5601 should be used. Refer p. 4 for
gas consumption details.
Water pipe sizing and layout should be
performed in accordance with AS/NZS 3500.
All hot water pipe work should be insulated to
optimise performance and energy e󰀩ciency.
Water supply
The appliance is intended to be permanently
connected to the water mains.
Refer p.4 for operational water pressure
limitations. Approved pressure limiting valves
may be required if the maximum rated water
supply pressures are exceeded. To achieve the
rated ow, the minimum water supply pressures
must be met.
The water heaters will operate at lower
pressures but will not achieve the rated ow.
Contact Rinnai for gravity fed or low pressure
installations.
Water chemistry and impurity limits are detailed
in the operation guide within the warranty
section. Most metropolitan water supplies fall
within these requirements.
If you are unsure about the water quality
contact your water authority. If sludge or foreign
matter is present in the water supply, a suitable
lter or strainer is required in the water supply
to the water heater to prevent unwarranted
damage and loss of performance.
Frost protection
Frost protection operates automatically, as
long as the appliance is connected to the
electrical power supply, by activating when the
temperature inside the unit drops below
3.5 °C1, and turns o󰀨 once the temperature
inside the unit reaches 7 °C1.
1Approximate temperatures
702
160
692 708
180
160
130
80
29 25
External Model Internal Model

Rinnai INFINITY N-Series installation guide 02-20 | 7
External unit - horizontal obstructions
AS/NZS 5601 states a minimum horizontal clearance of 500 mm between a building structure and
obstruction facing the terminal. At 500 mm the obstruction needs to be the full height of the unit,
as shown below, and not a partial obstruction. A partial obstruction of less than 1 m could result in
wind pushing the ue gases back into the ue terminal.
500mm
Minimum obstruction
height to be no less than
top of appliance
There MUST be NO partial obstructions to the appliance front cover or any other part of
the appliance casing. This will avoid the appliance from failing to operate under windy
conditions.
IMPORTANT

8 | Rinnai INFINITY N-Series installation guide 02-20
Water delivery temperature
Requirements of AS/NZS 3500 MUST BE considered regarding the temperature limitations of hot
water supplied to areas used primarily for personal hygiene. The temperature of these areas may
be limited to 55 °C or less.
If the appliance is to deliver water primarily for the purposes of personal hygiene in an early
childhood centre, school, nursing home or similar facility as dened in AS/NZS 3500.4, a
Temperature Limiting Device (TLD), such as a tempering valve may be required, even if the
appliance is set to 55 °C or less. For these types of applications contact Rinnai.
Requirements for Rinnai INFINITY units installed without controllers
Diagram 1 - 55 °C Appliance
55 °C
Diagram 2 - Not a 55 °C Appliance
(TLD = Temperature Limiting Device)
Hot Cold Gas
Ensuite
Laundry
Bathroom
Kitchen
Hot Cold Gas
Kitchen
> 55 °C
Laundry
> 55 °C
Ensuite
< 55 °C
Bathroom
< 55 °C
TLD
When the Rinnai INFINITY is set to deliver water at a temperature higher than 55 °C, it will be
necessary to t a Temperature Limiting Device for delivery to areas used for the purposes of
personal hygiene.

Rinnai INFINITY N-Series installation guide 02-20 | 9
Connections and ttings
Model Gas
consumption
MJ/h
Water Supply kPa
Min. Max.
Weight
kg
Fittings
Hot Cold Gas Cond.
N56kWe (external)
REU-N3237WC-ZK
16-209 300 1000 29 kg R¾
(20 mm)
R¾
(20 mm)
R¾
(20 mm)
R½
(15 mm)
N56kWi (internal)
REU-N3237FFC-ZK
16-209 300 1000 29 kg R¾
(20 mm)
R¾
(20 mm)
R¾
(20 mm)
R½
(15 mm)
Service connection points
An approved full ow isolation valve and disconnection union MUST BE tted to the cold water
inlet. A non-return valve is not required unless required by local regulations.
Isolation valves MUST NOT be tted directly to the appliance.
It may be necessary to t a temperature limiting device for delivery to areas used primarily for the
purposes of personal hygiene, refer previous page for ‘Water delivery temperature’ information.
Purge gas and cold water supply lines to remove air and swarf before nal connection. Swarf in the
gas or water supplies may cause damage, a common problem, which is not covered by warranty.
2. Hot water connection
From centreline 130 mm
From wall 157 mm
From bottom of unit 41 mm
4. Gas connection
From centreline 142 mm
From wall 72 mm
From bottom of unit 45 mm
2 3 4
1 1
2 3 4
1. Condensate connection
From centreline 196 mm
From wall 135 mm
From bottom of unit 24 mm
3. Cold water connection
From centreline 10 mm
From wall 91 mm
From bottom of unit 54 mm

10 | Rinnai INFINITY N-Series installation guide 02-20
Dimensions - N56kWe (external)
157.5
470
43.8
8.5
670
27
400
17.8 276 15
654
721.6
240.8
650
35.8
180
160
130
80
4-Ø13 hole
35.8
28.8
25.3
691.6
707.6 (wall installation pitch)
Pressure relief valve Cold water inlet
Gas connection
Hot water outlet
Condensate outlet
142
120
76
466
196
130
142
10
HOT
COLD GAS
PRV
DRAIN
57

Rinnai INFINITY N-Series installation guide 02-20 | 11
470
Coaxial flue Ø80-125
71.6
670
276 15.2
139.2
654
725.6
240.8
645
33.4 38.2
180
160
666.1
702.2
180
160
130
80
Pressure relief valve Cold water inlet
Gas connection
Hot water outlet
Condensate outlet
DRAIN
HOT
COLD
PRV
GAS
142
120
76
466
196 142
130
10
57
Dimensions - N56kWi (internal)

12 | Rinnai INFINITY N-Series installation guide 02-20
Condensate
The Rinnai INFINITY N-Series water heaters generate condensate continuously at a rate of up to
5 litres per hour as a by-product of a highly e󰀩cient gas burner. This condensate must be drained
via a pipe to a suitable point of discharge. As condensate is a by-product of gas combustion it is
mildly acidic. For this reason copper tube MUST NOT be used as it will corrode. Instead Rinnai
recommend plastic pipes and ttings.
Important considerations for the condensate drain pipe
The content of AS/NZS 3500 ‘ Temperature / Pressure Relief and Expansion Control Valve Drain
Lines’ has been used as a guide in preparing the information below.
2°
D
B
A
C
E
A
NOTE
Remove cap from condensate drain outlet
Condensate drain applies to
both internal and external
models. The external model is
shown in this illustration.
A. Water heater drain outlet connection, R½”
(15 mm) BSP male. Condensate drain outlet
connection, ½” (15 mm) BSP male nylon.
N.B: The black plastic shipping cap MUST BE
removed from the condensate drain outlet prior
to water heater operation.
B. PE R½” BSP (15 mm) female to barbed
irrigation system connector (13-19 mm) or
equivalent plastic tting1.
C. Drain pipe and ttings to match B.
D. Continuous fall of at least 2° from water
heater to discharge point. Lengths and bends in
accordance with the table below.
Lengths and changes of direction
Max. length (m) 9 8 7 6
Max. changes of direction greater
than 45°
3 4 5 6
E. Suitable points of discharge are deemed to
be drains, sewers or pits. DO NOT discharge
onto electrical connections, earth stakes,
copper pipes, concrete paths or into a pond.
Installation
The drain line MUST NOT discharge onto
electrical connections, earth stakes, copper
pipes, concrete paths or into a pond.
The point of discharge from each drain
line shall be located so that the release of
condensate does not cause a nuisance, is
readily discernible and incurs no risk of damage
to the building.
There shall be no tap, valve or other restrictions
in any line.
Each line shall fall continuously from the valve
to the approved point of discharge.
Drain lines shall not discharge into a storage
water heater safe tray.
The end of the condensate line shall be:
• Not lower than 200 mm or higher than
300 mm above an unpaved surface; or
• Not lower than 75 mm, or higher than
300 mm above a gravel pit not less than
100 mm in diameter in a paved surface.
• Where discharging over a tundish or gully
trap, drain lines shall have an air gap of a
size at least twice the diameter of the drain
line.
1Non-PE plastics will fail over time due to contact with the acidic condensate. Damage caused by installation of non-PE plastics will not
be covered by warranty.

Rinnai INFINITY N-Series installation guide 02-20 | 13
Interconnection of condensate drain lines
Condensate drain lines from multiple water heaters may be joined together provided they conform
with the requirements detailed on the previous page.
Common stack discharge
Where individual water heaters are installed in a multi-storey building, the condensate drain lines
may discharge into a common stack, subject to the following:
• The discharge from the common stack is to a tundish, having a discharge line, that is not
less than the size of the common stack, directly connected to a xture trap, and installed in
connection with any adjacent soil or waste stack.
• The discharge point of the common stack is such that any discharge is readily visible and will
not cause any nuisance.
• The common stack is vented by extending the pipe upwards, above the roof level.
Tundish drain lines
The drain line from any tundish shall not be less than DN 20 or less than one size larger than
that of the largest drain line discharging into a tundish. Tundish drain lines shall comply with the
requirements detailed on the previous page.
Areas subject to freezing
In areas where water pipes are prone to freezing, the drain pipe from any valve shall be insulated
and not exceed 300 mm in length. It shall discharge into a tundish through an air gap of not less
than 75 mm and not more than 150 mm measured from the outlet of the drain pipe to the rim of the
tundish.

14 | Rinnai INFINITY N-Series installation guide 02-20
Commissioning
AS/NZS 5601.1, clauses 2.6.8 and 6.11.2, states that every part of a gas installation shall be
commissioned prior to initial use. It is the installer’s responsibility to ensure all current
AS/NZS 5601 requirements are met. The URL’s provided are links to short videos on how key
steps are performed.
The appliance operation must be tested after installation. Ensure the building occupants do
not have access to the hot water outlets during this procedure.
Please note
The Rinnai INFINITY N-Series comes with a factory preset outlet temperature of 55 °C. Also preset
are the regulator and solenoid. DO NOT ADJUST the regulator/solenoid valve of the appliance,
as it is factory preset and electronically controlled and so DOES NOT require ANY adjustment.
DO NOT change the gas type. The gas type MUST be the same as that found on the appliance
labelling. If the gas type di󰀨ers to that shown on the appliance, DO NOT proceed and contact
Rinnai.
Inlet supply pressure to the appliance MUST BE checked and set within the operating parameters
of the appliance in all instances.
If the appliance can not be adjusted to perform correctly call 0800 RINNAI (0800 746 624) for
assistance.
Steps to commissioning a Rinnai INFINITY water heater
WARNING
Flush water pipes and gas line
Before nal connection of the water heater, ush the gas, hot and cold water supply lines.
Swarf in the gas or water supplies may cause damage, a common problem, which is not
covered by warranty.
Connect the gas line
Purge the gas line of air
Final connection test
Check supply pressure
Operate ALL other gas appliances at their maximum rate. With all gas appliances on maximum
the supply pressure must read between 1.13-3.0 kPa on Natural gas and on LPG 2.75-3.0 kPa.
If the pressure is lower, the gas supply is inadequate and the appliance will not operated to
specication. It is the installer’s responsibility to check the gas meter, service regulator and
pipe work for correct operation and sizing, and rectify as required.
PCB settings checked
Refer p.16 for PCB interface layout and functions.
PCB settings checked against parameters listed in the commissioning sheet.
Operate and check for gas leaks
Replace the appliance front cover otherwise the unit won’t operate correctly, operate and test
for gas leaks using an electronic leak detector.

Rinnai INFINITY N-Series installation guide 02-20 | 15
Operational test—water ow and temperature at the hot water outlets
Conrm the hot water delivery temperature using a thermometer.
If water controllers are tted, it is necessary to test their operation through the complete range
of functions, refer separate instructions provided with the water controllers.
Check cold water inlet lter
Inspect and clean the water inlet lter. This may need to be repeated to ensure the lter
remains clear, especially on new installations.
Short video: http://rinnai.co.nz/006
If you feel the customer is capable of doing this check it would be benecial to show them
how to inspect and clean the water lter as well.
Customer handover
After testing is completed, explain to the customer the function and operation of the water
heater and water controllers (if tted).
Also talk to them about:
• The gas, power, and water connections
• How frost protection works
• Procedure for draining the water heater
• Where to nd the data plate
• Maintenance and servicing
If the customer is not there try and contact them by phone to discuss these important points.
Ensure the installer details section is completed in the operation guide, the commissioning
checklist has been completed and signed, and that the guide and checklist are left with the
customer.

16 | Rinnai INFINITY N-Series installation guide 02-20
PCB interface and functions
PCB
Controller
connector
To
external
water
controllers
1
6 4 75
10
2
3
9
11
12
8
1Plastic PCB cover (PCB interface layout
guide
Can be rotated to gain access to PCB
(DO NOT REMOVE)
2Push button A (PB-A) Mode button, places the PCB into programming
mode
3Push button B (PB-B) DO NOT USE
(PCB transfer or combustion setting mode)
4Up/down buttons Menu button, cycles through available menu
options—refer commissioning sheet
5On/O󰀨 button Value button, cycles through available menu
values—refer commissioning sheet
6LED digital display Displays menu and values
7Priority button DO NOT USE
(Change priority to another remote controller)
8Accessory port (controllers) Used for connecting additional controllers
9Accessory 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 tted 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.

Rinnai INFINITY N-Series installation guide 02-20 | 17
Water controller installation
The maximum number of controllers that can be tted to an N-Series water heater is three, refer
water controller congurations section below.
General information
Other manufacturers water controllers are NOT compatible with Rinnai water heaters. Water
controllers MUST NOT be used with any solar boost water heater. Rinnai water controllers bought
in from other countries are not compatible with Rinnai appliances sold in New Zealand.
Water controllers and transceivers (for those with wireless controllers) DO NOT contain serviceable
parts and must only be serviced by an authorised person.
Master controller
Only one master controller can be designated as a ‘master’ water controller. This water controller
is normally used in the kitchen. The remaining controllers are ‘sub-controllers’ and are for use
in bathrooms, toilets, and laundries. The temperature limit for all sub-controllers is 50 °C, this is
a safety feature, to reduce the risk of burns in these areas. A master controller MUST NOT be
installed in a bathroom.
Water controller configurations
• A maximum of three Compact controllers (MC-601) can be fitted.
• Only one master controller can be installed. This can be a Kitchen Deluxe1(MC-100V), or any
other Compact controller (MC-601).
1When a Kitchen Deluxe controller is fitted, it will always function as a master controller, this is the default setting and cannot be
changed.
• In addition to a master controller, up to two additional controllers can be fitted
Controller location
• Do not install water controllers near a heat source, such as a cook top, stove or oven. Heat
steam, smoke, and hot oil may cause damage.
• Do not install water controllers outdoors unless protection from water/dust ingress and sunlight
are provided.
• Do not install water controllers in direct sunlight.
• Do not install water controllers against a metal wall unless the wall is earthed in accordance
with AS/NZS 3000.
• Water controllers must not be installed where chemicals such as benzene, alcohol, turpentine,
hydrogen sulphide, ammonia, chlorine or other similar chemicals are in use.
The water controller is water resistant, however excessive exposure to water may result in
damage. Durability is improved when positioned OUTSIDE the shower recess.
• Avoid direct exposure to water or steam as these may cause the controller to malfunction.
• Water controllers must be installed in shaded and clean locations. They should be fitted out of
reach of children (suggested height 1.5 m from the floor), and installed at least 400 mm above
the highest part of a sink, basin or bath.
When cleaning your water controller use only a damp cloth and mild detergent.

18 | Rinnai INFINITY N-Series installation guide 02-20
Communication cables
Wired water controllers operate at an extra low voltage (12 V DC), which is supplied from the water
heater. A 10 m long communication cable is supplied for connection to the water heater. Only
Rinnai supplied communication cables may be used.
Connecting communication cables to the mini-plug
DO NOT attempt to connect water controller cables to the mini-plug when it is plugged
into the PCB unless the power to the water heater is switched OFF, otherwise damage to
electrical components may occur.
Water controllers are connected to the PCB by a dedicated pre-wired mini-plug.
Standard electrical cable connectors can be used to terminate the water controller wires to those
on the mini-plug. The existing spade connectors, of the communication cables, will need to be
removed prior to termination. Controllers are not polarity sensitive, however to avoid confusion it is
recommended that like coloured wires be terminated together.
CAUTION
Electrical connectors
(not supplied)
Pre-wired mini-plug
(supplied)
Communications cable
MC-91, MC-601, BC-100V
Communications cable
MC-100V, wireless controller
Connecting communication cables to the PCB (refer image on next page)
DO NOT attempt to connect the mini-plug or water controller cables to the water heater unless the
power to the water heater is switched OFF, otherwise damage to electrical components may occur.
1. Isolate the power supply by switching the power point off and removing the water heater plug
from the power socket.
2. Remove the front cover of the appliance.
3. Insert the mini-plug and the connected water controller cables through the cable access at
the base of the appliance. Ensure the cable connectors are located inside the appliance for
protection.
4. Locate the PCB (bottom right of the appliance), and carefully rotate the plastic safety cover out
of the way.
5. Locate the accessory port socket (bottom front of PCB).
6. Plug the mini-plug into the accessory port socket, the plug and socket are keyed so that they
can only be plugged into the one direction).
7. Proceed with the water controller installation and connect the communication cables to the
controllers.

Rinnai INFINITY N-Series installation guide 02-20 | 19
Cable access
PCB
Safety cover
Accessory port socket
PCB
Accessory port
socket
Connecting communication cables to the PCB

07000012304922
U334-1804X01(00)
Tel: [phone]
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Rinnai.co.nz Installation guide