Rinnai Infinity V26 series Installation Information Download Page 1

 

Local regulations and / or the requirements of AS/NZS 3500.4 must be 
considered regarding the temperature limitations of  hot water supplied to 
areas used primarily for personal hygiene. The temperature of water to 
these areas may be limited to 50º C or less.  To ensure these regulations 
and / or requirements are met the system 

MUST

 be installed in 

accordance with the 'Water Heater and Controller Installation 
Configurations' Section of this document.

The appliance weighs 21 kg and the wall or structure on which it is to be 
mounted must be capable of supporting the weight of the appliance and 
associated pipe-work. 

Ensure that suitable fixing screws or bolts are used to secure the Infinity 
to the wall. Bracket and fixing hole locations are shown overleaf.

The top bracket has a keyhole slot so that the appliance can be 
positioned by hanging it on one screw, then the other screws can be 
secured.

After determining the most suitable position, fix the Infinity to the wall.

Positions of the cold water inlet, hot water outlet and gas connections are 
shown overleaf.  All connections are R ¾ (20mm).  This is NOT an 
indication of the pipe sizes required.

An Approved isolation valve and disconnection union MUST be fitted to 
the cold water inlet. A non return valve is not required unless dictated by 
local regulations.

GENERAL INSTALLATION INFORMATION 

REU-V2626W SERIES / REU-V2632W SERIES 

AG601/AS5601 - Gas Installations
AS/NZS 3500 - National Plumbing and Drainage
AS/NZS 3000 - Wiring Rules 
Building Codes of Australia 

The appliance should be placed as close as practicable to the most 
frequently used hot water outlet point or points to minimise the delay 
time for hot water delivery. For installations where the distance between 
the unit and hot water outlet points is considerable, the appliance can 
also be fitted in a 'flow and return system' which minimises the waiting 
time for hot water delivery. Alternatively, multiple appliances can be 
strategically placed to service outlet points with minimal delay time.   
Contact Rinnai Australia for further information.  

Location of the appliance flue terminal must be in accordance with the 
clearances shown in Figure 5.3 of AG601/AS5601-2002 which is 
reproduced right side. Ensure that the flue terminal and hot water outlet 
connection cannot be touched by children.  The appliance must be clear 
of obstructions and shrubbery.

The appliance must be in an accessible location. Sufficient clearances 
shall allow access to, and removal of, all serviceable components.  The 
appliance should  not be mounted higher than 3.5 metres from the 
ground or floor level unless the customer can arrange permanent and 
safe access or can arrange another means of access, for example, by 
means of scissor or boom lifts.

AC 240V, 10A weatherproof external earthed power point shall be 
provided adjacent to the appliance.  It must be clear of the gas and water 
connections to the appliance, flue exhaust and water pressure relief 
valve.   The power cord of the appliance is 1500 mm long.

Note that AG601/AS5601-2002 was current at the time of printing but 
may have been superseded.  It is the installer's responsibility that the 
current clearance requirements are met.

This appliance can use up to 199 MJ/h of gas.  If the gas pipe sizing is 
insufficient the customer will not get the full performance benefit.  Gas 
pipe sizing must consider the gas input to this appliance as well as all 
the other gas appliances in the premises. The gas meter and regulator 
must  be specified for this gas rate. An approved sizing chart such as the 
one in AG601 / AS5601 should be used.

Water pipe sizing and layout should be performed in accordance with 
AS/NZS 3500.  All hot water pipe-work should be insulated to optimise 
maximum performance and energy efficiency.

Where the water supply pressure exceeds 1200 kPa, an approved 
pressure limiting valve is required at the inlet of the appliance. To 
achieve the rated flow a minimum water supply pressure of 140 kPa is 
required at the appliance inlet.  The unit will operate at lower supply 
pressures but the rated flow will not be achieved. Contact Rinnai for 
'gravity fed' or 'low pressure' hot water installations.        

The water quality should be in accordance with the guidelines contained 
in the 'How to use your Water Heater' booklet. Most Australian 
Metropolitan water supplies will fall within these guidelines. If you are 
unsure of your water quality, contact your local water authority. If sludge 
or foreign matter is present in the water supply, a suitable filter should be 
incorporated in the cold water supply pipe. 

You must install this appliance in accordance with these Instructions and all 
regulatory requirements which exist in your area.  Applicable publications 
may include:




THIS APPLIANCE IS DESIGNED FOR OUTDOOR INSTALLATION. 

IT MUST BE MOUNTED ON A VERTICAL WALL OR STRUCTURE WITH 
THE WATER AND GAS CONNECTIONS ON THE UNDERSIDE POINTING 
TOWARDS THE GROUND.  

THIS APPLIANCE MUST NOT BE USED AS A DOMESTIC SPA OR 
SWIMMING POOL HEATER. 

APPLIANCE LOCATION

PIPE SIZING

WATER SUPPLY

 

*Contact Rinnai for exemptions for the above clearances which may have
 been granted since printing of this document.

HOT WATER DELIVERY TEMPERATURE

 

MOUNTING THE APPLIANCE

SERVICE CONNECTION POINTS

 

Min. clearances 

(mm) 

Ref. 

Item 

Fan assisted 

Below eaves, balconies and other projections: 

Appliances up to 50 MJ/h input 

200 

Appliances over 50 MJ/h input 

300 

From the ground, above a balcony or other surface † 

300 

From a return wall or external corner † 

300 

From a gas meter (M) (see 4.7.11 for vent terminal location of 
regulator) 

1000 

From an electricity meter or fuse box (P) 

500 

From a drain pipe or soil pipe 

75 

Horizontally from any building structure = or obstruction facing a 
terminal  

500 

From any other flue terminal, cowl, or combustion air intake †*

 

300 

Horizontally from an openable window, door, non-mechanical air inlet, or any other opening 
into a building with the exception of sub-floor ventilation: 

Appliances up to 150 MJ/h input 

300 

Appliances over 150 MJ/h input up to 200 MJ/h input 

500 

Appliances over 200 MJ/h input 

1500 

All fan-assisted flue appliances, in the direction of discharge 

1500 

From a mechanical air inlet, including a spa blower 

1000 

Vertically below an openable window, non-mechanical air inlet, or any other opening into a 
building with the exception of sub-floor ventilation: 

Space heaters up to 50 MJ/h input 

150 

Other appliances up to 50 MJ/h input 

500 

Appliances over 50 MJ/h input and up to 150 MJ/h input 

1000 

Appliances over 150 MJ/h input 

1500 

 

- unless appliance is approved for closer installation

 

NOTES:

   

1  All distances are measured to the nearest part of the terminal.

 

2  Prohibited area below electricity meter or fuse box extends to ground level.

 

3 See Clause

 

5.13.6.6 for restrictions on a flue terminal under a covered area.

 

4 See  Appendix

 

J,  Figures J2(a) and J3(a), for clearances required from a flue terminal to an LP Gas 

cylinder. A flue terminal is considered to be a source of ignition.

 

5  For appliances not addressed above, approval shall be obtained from the Authority.

 

g

openable

window

door

M

P

g

See note 3

T

b

d

d

e

e

See note 2

h

h

a

h

j

j

j

n

k

k

c

c

f

T = Flue terminal
I  = Mechanical air inlet

areas for flue terminals

T

T

I

 

Shading indicates prohibited

M = Gas meter
P = Electricity meter or fuse box

Fig 5.3

1

An Approved isolation valve and disconnection unit MUST be fitted to 
the gas inlet.
 
Isolation Valves must not be fitted directly to the appliance.

It may be necessary to fit a temperature limiting device for delivery to 
areas used primarily for the purposes of personal hygiene.  Refer to the 
'Water Heater and Controller Installation Configurations' Section of this 
document.

Purge gas and cold water supply lines to remove air and swarf before 
final connection of the appliance. Swarf in either the gas or water 
supplies may cause damage.

Recess Box: The appliance can be 'recessed' into the wall for flush 
fitting reducing even further the space required. A custom made Rinnai 
Infinity Recess Box must be used for this purpose.

Pipe Cover: The pipe-work underneath the appliance can be covered 
using a custom made Rinnai pipe cover.

Security Cage: A Security Cage can be fitted around the appliance.  

Contact Rinnai for further details.

Remote Controllers are an optional extra. 'Standard' and 'Deluxe' 
controls can be fitted. Standard controls allow temperature selection 
only. Deluxe controls have temperature selection, bath-fill and voice 
prompting functions. For detailed information regarding controller 
operation refer to the 'How to use your water heater' booklet supplied 
with the appliance. Other manufacturers' controllers are NOT compatible 
with this appliance.

Up to 4 Standard Controls can be fitted to the appliance. They are 
normally installed in the areas where the majority of hot water is used, 
for example, the kitchen, bathroom, ensuite and  laundry.

Deluxe controllers have 'kitchen' (MC-70-2A) and 'bathroom' (BC-70-2A) 
versions. 'Kitchen' controls are intended for the kitchen or other 
convenient area where the majority of hot water is used.  Bathroom 
controllers are intended to be fitted in the bathroom or ensuite and allow 
the user to have a bath filled to the required level and temperature 
automatically.
 
Up to  three 'deluxe' controllers can be connected as follows: 

If a fourth controller is required, a Standard controller can be included as 
follows:

Controllers must be installed in shaded and clean locations. They should 
be fitted out of reach of children (suggested height from floor at least 
1500mm). Controllers are water resistant, however, durability is 
improved when positioned outside the shower recess or at least 400mm 
above the highest part of a sink, basin or bath.

NEAR A HEAT SOURCE, SUCH AS A COOK TOP, STOVE OR OVEN.  
HEAT, STEAM, SMOKE AND HOT OIL MAY CAUSE DAMAGE.

I

N DIRECT SUNLIGHT.

OUTDOORS UNLESS AN ENCLOSURE IS PROVIDED WHICH 
PROTECTS THE CONTROLLER AGAINST SUNLIGHT AND DUST 
INGRESS.

AGAINST A METAL WALL UNLESS THE WALL IS EARTHED IN 
ACCORDANCE WITH AS/NZS 3000.

Remote controls operate at extra low voltage (12 Volts DC) which is 
supplied from the appliance. Controllers are supplied with 15 m of 
electrical cable. The cable wires for connection to the appliance are 
fitted with spade terminals. Extension cables are available from Rinnai.  
Alternatively, a two core sheathed (double insulated) flex with minimum 
cross-sectional area of 0.5 mm² can be used. Maximum cable length is 
50 m. For connection refer to the “

CONNECTING REMOTE CONTROL 

CABLES”

 section.

Determine the most suitable position for the Remote Control.

Determine the most suitable position for the Remote Control.

 

 

 

ACCESSORIES

 

REMOTE CONTROLLERS

 

STANDARD CONTROLLER (MODEL MC-91-1A)

DELUXE CONTROLLERS (MODELS MC-70-2A AND BC-70-2A)

POSITIONING OF CONTROLLERS

DO NOT INSTALL THE CONTROLLERS: 

REMOTE CONTROL CABLES

FITTING THE 'STANDARD' REMOTE CONTROLLERS (MC-91-1A)

1.

2.

3.

4.

5.

6.

7.

8.

Note: For details on how to program the MC-91-1A remote control see 
Appendix 1. MC-91-1A CONTROLLER PROGRAMMING.

FITTING THE 'DELUXE' REMOTE CONTROLLERS (MC-70-2A)

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Kitchen 

Bathroom 

Ensuite 

MC-70-2A 

 

 

MC-70-2A BC-70-2A 

 

MC-70-2A 

BC-70-2A

BC-70-2A 

Drill 3 holes in the wall, as shown in 
fig.1, one for the cable and two for 
the securing screws. Ensure holes 
are drilled. Fit wall plugs if required.

Run the cable through the hole in the 
wall-ensuring that the end fitted with 
the connector is near the controller.
(fig.3)

Remove the face plate from the Remote 
Control, using a screw driver.(fig.2)

Connect the cable to the remote 
controller.

Fix the remote controller to the wall  
and fasten with phillips head screws 
supplied as shown in fig.4.

Remove the protective plastic film from 
the controller face as show in fig.4.

Replace the face plate.

Drill 3 holes in the wall, as shown in 
fig.1, one for the cable and two for 
the securing  screws. Ensure holes 
are drilled. Fit wall plugs if required.

Fix the mounting bracket to the wall 
using the screws provided.

Run the cable through the hole in the 
wall.

Remove the face plate from the
Remote Control, using a screw driver. 
(fig.2)

Connect the cable to the kitchen 
remote control as shown in fig.3. 
Connect cables from bathroom 
controllers (if fitted) to the kitchen 
remote control also (if required). 
Polarity is not important; either colour 
wire can be connected to either
terminal.

Fix the kitchen controller to the wall 
bracket and fasten with phillips head 
screws supplied (M4 x 12) as shown 
in fig.4.

Remove the protective plastic film 
from the controller face as shown in 
fig.5.

Replace the face plate.

Close the flip panel.

Note: If the cable cannot be run in the 
wall cavity, remove the plastic 'knockout' 
lugs as shown in fig.3. 

Kitchen 

Bathroom 

Ensuite 

Laundry  

MC-70-2A 

 

 

 

MC-70-2A 

BC-70-2A 

 

 

MC-70-2A 

BC-70-2A 

BC-70-2A 

MC-91-1A 

83

41.5

120

Outline of Remote Control 

90

Securing 

Wire

fig.1

fig.3

fig.5

fig.4

fig.3

fig.2

fig.1

fig.2

Face Plate

fig.4

Face Plate

Screw

Film

2

Drill 3 holes in the wall, as shown in 
fig.1, one for the cable and two for 
the securing screws. Drill holes to 
ensure controller position will be level 
when installed. Fit wall plugs if 
required. 

Run the cable through the hole in the 
wall - ensuring that the end fitted with 
the connector is near the controller.
(fig.3)

Remove the face plate from the 
Remote Control, using a screw driver.  
(fig.2)

Connect the cable to the bathroom 
remote controller.

Fix the bathroom controller to the wall  
and fasten with phillips head screws 
supplied as shown in fig.4.

Remove the protective plastic film 
from the controller face as shown in 
fig.4.

Replace the face plate.

Close the flip panel.

Determine the most suitable position for the Remote Control.

If the front cover of the appliance contains the following text install it in 
accordance with Diagram 1 below.

" THIS APPLIANCE DELIVERS WATER 

NOT EXCEEDING 50ºC IN ACCORDANCE WITH AS 3498 "

If the front cover of the appliance does 

NOT

 contain the above text install 

it in accordance with Diagram 2 below.

IMPORTANT: 

If the appliance is to deliver water primarily for the 

purposes of personal hygiene in an early childhood centre, primary or 
secondary school, nursing home or similar facility for young, aged, sick 
or disabled persons as defined 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 50º C or less.

For these types of applications contact Rinnai.

D

iagram 1 - 50ºC Appliance.

Diagram 2 - Not a 50ºC Appliance.

Note:  TLD = Temperature Limiting Device.

Isolate the power supply.

Remove the front cover from the Appliance (4 screws) fig. 1.  

Cut the spade connectors from 2 of the controller cables to be 
connected to the appliance (4 spade connectors should be cut off) and 
discard. Connect the wires from these two cables and terminate into 
two new spade connectors as shown in fig.3. Spade connectors are 
available from your local electrical component retailer.

Thread the 3 cables through the cable access hole at the base of the 
appliance. Connect the 4 spade connectors to the terminals marked 
"Remote Control" on the printed circuit board. (fig. 2)  Polarity is not 
important. Either wire colour can be connected to either terminal.

Replace cover of the Appliance. Ensure that the screw with the star 
washer is placed at the bottom right hand corner for earthing purposes.

Replace cover of the Appliance.  Ensure that the screw with the star 
washer is placed at the bottom right hand corner for earthing purposes.

FITTING THE 'DELUXE' REMOTE CONTROLLERS (BC-70-2A)

1.

2.

3.

4.

5.

6.

7.

8.

9.

WATER HEATER & CONTROLLER INSTALLATION CONFIGURATIONS

CONNECTING REMOTE CONTROL CABLES

R I S K   O F   E L E C T R I C A L   S H O C K   !

Connecting One or Two Controllers

1.

2.

3.

4.

5.

Connecting Three Controllers

1.

2.

3.

4.

5.

Connecting Four Controllers 

1.

2.

3.

4.

5.

Isolate the power supply.

Remove the front cover from the 
Appliance (4 screws) fig. 1. 

Thread the cable(s) through the cable 
access hole at the base of the
appliance.

Connect the spade connectors to the 
terminals marked ‘Remote Control’

Polarity is not important.  Either wire 
colour can be connected to either 
terminal.

Replace cover of the Appliance.  
Ensure that the screw with the star 
washer is placed at the bottom right 
hand corner for earthing purposes.

Isolate the power supply.

Remove the front cover from the 
Appliance (4 screws) fig.1. 
 
Cut the spade connectors from all 
four controller cables to be connected 
to the appliance (8 spade connectors 
should be cut off) and discard.  
Connect the wires from two cables 
and terminate into two new spade 
connectors as shown in fig.3.  

Repeat for the remaining two cables.  
Spade connectors are available from 
your local electrical component 
retailer.
   
Thread the 4 cables through the 
cable access hole at the base of the 
appliance. Connect the 4 spade 
connectors to the terminals marked 
‘"Remote Control" on the printed 
circuit board. (fig. 2)  Polarity is not 
important.  Either wire colour can be 
connected to either terminal.

fig. 2

Do not attempt to connect the 
remote control cable terminals to 
the appliance with the power on.

fig. 3

New spade connectors

Cable

wires

Cable

wires

Remote control cables

50º C

KITCHEN

Temperature

controller

(optional)

Temperature

controller

(optional)

Temperature

controller

(optional)

Temperature

controller

(optional)

LAUNDRY

BATHROOM 

ENSUITE

H
O
T

C
O
L
D

G
A
S

KITCHEN

Temperature

controller

(optional)

Temperature

controller

(optional)

LAUNDRY

BATHROOM 

Temperature

controller

(optional)

Temperature

controller

(optional)

ENSUITE

TLD

H
O
T

C
O
L
D

G
A
S

fig. 1

fig.3

CABLE CLAMP

REMOTE

REMO

fig.1

fig.2

fig.4

3

Regulator adjustment
screw access plug

TESTING AND COMMISSIONING

1. 

2.

3. 

4. 

5. 

6. 

7. 

8. 

9. 

10. 

11. 

12. 

13. 

GAS PRESSURE SETTING

Under normal circumstances it does not require adjustment during 
installation. Perform this procedure only if the unit is not operating correctly 
and all other possible causes for incorrect operation have been eliminated.

1. 

2.

3.

4.

Note: 'ON' towards front, 'OFF' towards rear.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

Before final connection of the water heater purge gas, hot and cold 
water supply lines. Swarf in either the gas or water supplies may cause 
damage.

Turn on gas and cold water supplies.  

Test for water leaks and gas escapes near the unit.  

Isolate gas supply.  Remove test point screw located on the gas inlet 
connection and attach pressure gauge.

Turn the power 'on' at the power point socket and turn on gas. 

If remote controllers are fitted, turn the controller 'on', select the 
maximum delivery temperature  and open ALL available hot water taps 
including the shower.  If remote controllers are not fitted, simply open all 
available hot water taps. (

CAUTION:

 Ensure building occupants do not 

have access to hot water outlets during this procedure.) 

Operate ALL other gas appliances at their maximum gas rate, in 
accordance with manufacturers instructions.

With all gas appliances in operation at maximum gas rate, the pressure 
gauge at the incoming test point  the Infinity should read 1.13 - 3.0 kPa 
on Natural Gas.  On LPG the pressure should be 2.75 - 3.0  kPa.  If the 
pressure is lower,  the gas supply is inadequate and the Infinity unit will 
not operate to specification.  Check gas meter, regulator and pipework 
for correct operation/sizing and rectify as required.  Note that the gas 
regulator on the Infinity is electronically controlled and factory pre-set.  
Under normal circumstances it 

DOES NOT

 need adjustment during 

installation.

Close hot water taps including the shower.

Inspect and clean the strainer located on the cold water inlet 
connection. This procedure may need to be repeated to ensure the 
strainer remains clear, especially on new installations.

If Temperature Controllers are fitted, it is necessary to test their 
operation through the complete range of functions. (Refer to the 'How to 
use your Water Heater' booklet.)  

Confirm the hot water delivery temperature(s) using a thermometer.     

 

If controllers are fitted, ensure temperatures exceeding 50º C cannot be 
selected on bathroom or ensuite controllers.

After testing is completed, explain to the householder the functions and 
operation of the water heater and temperature controllers (if fitted).  
Ensure the 'Customer Record' section of the 'How to use your Water 
Heater' booklet is filled in and that the booklet is handed to the 
customer. Remind the customer to complete the Warranty Card and 
forward to Rinnai.

Turn 'OFF' the gas supply.

Turn 'OFF' 240V power supply.

Remove the front cover from the 
appliance.

Check gas type switches (fig. 1) are in 
the correct position (dipswitch 1 of  
SW2 'ON' = NG, 'OFF' = LPG).

Attach pressure gauge to burner test 
point, located on the gas control.
(fig. 2) 

Turn 'ON' the gas supply. 

Turn 'ON' 240V power supply.

If remote controllers are fitted, turn the 
unit 'ON' at the kitchen controller, 
select the maximum delivery 
temperature of 55°C and open a hot 
water tap fully. (

CAUTION:

 Ensure 

building occupants do not have access 
to  hot water outlets during this 
procedure.)

Set the Infinity to 'Forced Low' 
combustion by setting No. 7 dipswitch 
of the SW1 set of dip switches to 'ON'. 
(fig. 3)

Check the burner test point pressure.

Remove rubber access plug and 
adjust the regulator screw on the 
modulating valve (fig. 4) as required to 
the pressure. Table 1. Replace  rubber 
access plug.

Set the Infinity to 'Forced High' 
combustion by setting both No. 7 and 
No. 8 dipswitches of the bottom SW1 
set to 'ON'. (fig. 5) Ensure maximum 
water flow.

Check the burner test point pressure.

Adjust the high pressure Potentiometer 
(POT) on the Printed Circuit Board 
(PCB) as required to the pressure 
shown Table 2. (fig.1).

IMPORTANT:

 Set dip switches No's 7 and 8 on the bottom (SW1) set 

of switches to 'OFF' to return the appliance to 'Normal' combustion.    

 

(fig. 6)

Close hot water tap.

Turn OFF the gas supply and 240V power supply.

Remove pressure gauge, and replace sealing screw.

Turn 'ON' the gas supply and 240V power supply.

Operate unit and check for gas leaks at test point.

Replace the front cover of the appliance.

ON

fig. 3

fig. 4

Table 1.

N.G.

0.14 kPa

0.22 kPa

Prop.G.

Pressure Setting Low

ON

fig. 6

ON

fig. 5

Table 2.

N.G.

0.79 kPa

1.15 kPa

Prop.G.

Pressure Setting High

DURING PRESSURE TESTING OF THE INSTALLATION 

ENSURE GAS COCK SITUATED BEFORE UNIT IS SHUT-OFF.

FAILURE TO DO SO MAY RESULT IN SERIOUS

DAMAGE TO THE APPLIANCE AND POSSIBLE INJURY.

SW2

g

fig.1

SW1

SW1

WARNING

Potentiometer

4

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