Midea JSG52-26VH3 User manual

INSTALLATION GUIDE
AND
OPERATION MANUAL
GAS WATER HEATERS
MODEL: M26i (JSG52-26VH3)
M26i-50 (JSG52-26VH3-50)
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
FOR INDOOR INSTALLATION ONLY
Thank you very much for purchasing our water heater. Before installing
and
operating your water heater, please read this manual carefully and keep it
for future reference.
WaterMark
™
GMK10706 WMKA22451
AUSTRALIA AND NEW ZEALAND
GAS SAFETY CERTIFICATION
®
DO NOT REMOVE
INSTALLATION GUIDE
AND
OPERATION MANUAL
GAS WATER HEATERS
MODEL: M26i (JSG52-26VH3)
M26i-50 (JSG52-26VH3-50)
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
FOR INDOOR INSTALLATION ONLY
Thank you very much for purchasing our water heater. Before installing and
operating your water heater, please read this manual carefully and keep it
for future reference.
WaterMark
™
GMK10706 WMKA22451
AUSTRALIA AND NEW ZEALAND
GAS SAFETY CERTIFICATION
®
DO NOT REMOVE
INSTALLATION GUIDE
AND
OPERATION MANUAL
GAS WATER HEATERS
MODEL: M26i (JSG52-26VH3)
M26i-50 (JSG52-26VH3-50)
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
FOR INDOOR INSTALLATION ONLY
Thank you very much for purchasing our water heater. Before installing and
operating your water heater, please read this manual carefully and keep it
for future reference.
WaterMark
™
GMK10706 WMKA22451
AUSTRALIA AND NEW ZEALAND
GAS SAFETY CERTIFICATION
®
DO NOT REMOVE

PAGE
1. GENERAL INFORMATION 3
2. IMPORTANT INFORMATION 4
2.1. FOR THE INSTALLER 4
2.2. FOR THE SERVICEMAN 4
2.3. FOR THE PLUMBER 4
3. SPECIFICATIONS 6
4. INTRODUCTION 7
4.1. DIMENSIONS AND CONNECTION POINTS 8
4.2. SAFETY GUIDELINES 9
5. INSTALLATION 10
5.1. CONFIRMING APPLIANCE SUITABILITY 10
5.2. SELECTING SUITABLE INSTALLATION LOCATION 11
5.3. CLEARANCES FOR BALANCED INDOOR HEATER LOCATIONS 12
5.4. GAS CONNECTION 14
5.5. SIZING AND CONNECTION SUITABILITY 14
5.6. MEASURING INLET GAS PRESSURE AND TESTING FOR GAS LEAKAGE 15
5.7. WATER CONNECTIONS 16
5.8. ELECTRICAL CONNECTIONS 18
6. INSTALLATION OF FLUE PIPE 19
7. REMOTE CONTROLLER (OPTIONAL) 21
7.1. REMOTE CONTROLLER INSTALLATION 22
7.2. CONNECTION OF REMOTE CONTROLLER WIRING 23
8. INITIAL OPERATION 24
9. NORMAL OPERATION 25
9.1. WITHOUT REMOTE CONTROLLER 25
9.2. WITH MULTIPLE REMOTE CONTROLLERS 26
9.3. FREEZE PREVENTION 27
10. MAINTENANCE AND SERVICE 28
10.1. UNIT DRAINING AND FILTER CLEANING 28
10.2. GENERAL TROUBLESHOOTING 29
10.3. PCB ERROR CODES 31
10.4. REMOTE CONTROLLER ERROR CODES 31
10.5. WIRING DIAGRAM 33
10.6. WATER FLOW AND WATER TEMPERATURE 33
11. WARRANTY 34
CONTENTS

3
1. GENERAL INFORMATION
Maximum delivery temperatures
Midea gas water heaters are factory pre-set to various maximum delivery temperatures depending on model
and their intended application. For the majority of applications, the factory pre-set temperature is appropriate.
In the unlikely event this is not the case this setting can be increased or decreased by an authorised person
such as a licensed plumber.
Factory pre-set delivery temperatures for the various models are as follows:
Model Factory “PRE-SET” maximum
delivery temperature (°C)
M26i (JSG52-26VH3) 70
M26i-50 (JSG52-26VH3-50) 48

4
2. IMPORTANT INFORMATION
This manual has been prepared for Installers and Servicemen of the equipment. Please keep it in a safe place
for future reference.
2.1 FOR THE INSTALLER
The installation must be done in accordance with the information supplied in this manual. All other relevant
national, state and local regulations must also be adhered to include (but are not limited to):
• Australian Standard AS3500.1 – Water Services.
• Australian Standard AS3500.4 – Heated Water Services.
• Australian Standard AS3000 – Electrical Installation.
• Australian Standard AS/NZS5601 – Gas Appliance Installation.
• Local Water, Gas & Electrical Authority Regulations.
• Municipal Building Codes including local OH&S requirements.
2.2 FOR THE SERVICEMAN
Maintenance and fault-finding must be done in accordance with these instructions and the applicable
regulations listed above.
WARNING
Installation and service must be performed by a qualified installer
(for example, a licensed plumber or gas fitter).
FOR CONTINUED SAFETY OF THIS APPLIANCE IT MUST BE INSTALLED, OPERATED
AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURERS INSTRUCTIONS
2.3 FOR THE PLUMBER
PLEASE NOTE M26i (JSG52-26VH3) model is supplied factory pre-set at 70ºC maximum outlet water
temperature to comply with the requirements of AS 3498 Clause 7.2.2.
Model number M26i (JSG52-26VH3) unit does require a temperature control device to be installed.
PLEASE NOTE M26i-50 (JSG52-26VH3-50) model is supplied factory pre-set at 48ºC maximum outlet water
temperature to comply with the requirements of AS 3498 Clause 7.2.1.
Model number M26i-50 (JSG52-26VH3-50) unit does NOT require a temperature control device to be
installed.
Please follow all the instructions in the installation and operation manual and the following additional
instructions for the water heater outlet connection.
• When connecting the hot water supply to the fixtures in the property a minimum of two (2) metres of
pipework must be used between the outlet of the water heater and the first tap and outlet.
(refer to diagram on following page)
• The hot water line should be insulated with Armaflex or similar pipe insulation.
• When the installation is completed the temperature is to be tested at the taps to confirm the water
temperature does not exceed the required 50ºC setting.
• Total length to first tap or outlet must be a minimum of 2 metres from the outlet connection of the water
heater
• Pipe size is nominal 15mm from hot water outlet to the first tap or outlet.
• Gas pipe size is nominal 20mm.

5
5
HOT
WATER
OU TLET COLD
WATER
INLET
GAS
INLET
ENSU ITE
LAU NDRY
BATHROOM
K ITCHEN
Water Controller 1
(OPTIONAL)
Water Controller 2
(OPTIONAL)
Water Controller 3
(OPTIONAL)
MIN. 2 METRES
(FROM HOT OU TLET TO NEAREST HOT WATER TAP/ OU TLET)
50ºC PRESET UNIT
HOT
WATER
OU TLET COLD
WATER
INLET
GAS
INLET
ENSU ITE
LAU NDRY
BATHROOM
K ITCHEN
Water Controller 1
(OPTIONAL)
Water Controller 2
(OPTIONAL)
Water Controller 3
(OPTIONAL)
MIN. 2 METRES
(FROM HOT OU TLET TO NEAREST HOT WATER TAP/ OU TLET)
70ºC PRESET UNIT
(NOTE: TCD - TEMPERATURE CONTROL DEVICE)
TCD
Priority
Power
Priority
Power
Priority
Power
Priority
Power
Priority
Power
Priority
Power
5
HOT
WATER
OU TLET COLD
WATER
INLET
GAS
INLET
ENSU ITE
LAU NDRY
BATHROOM
K ITCHEN
Water Controller 1
(OPTIONAL)
Water Controller 2
(OPTIONAL)
Water Controller 3
(OPTIONAL)
MIN. 2 METRES
(FROM HOT OU TLET TO NEAREST HOT WATER TAP/ OU TLET)
50ºC PRESET UNIT
HOT
WATER
OU TLET COLD
WATER
INLET
GAS
INLET
ENSU ITE
LAU NDRY
BATHROOM
K ITCHEN
Water Controller 1
(OPTIONAL)
Water Controller 2
(OPTIONAL)
Water Controller 3
(OPTIONAL)
MIN. 2 METRES
(FROM HOT OU TLET TO NEAREST HOT WATER TAP/ OU TLET)
70ºC PRESET UNIT
(NOTE: TCD - TEMPERATURE CONTROL DEVICE)
TCD
Priority
Power
Priority
Power
Priority
Power
Priority
Power
Priority
Power
Priority
Power

6
3. SPECIFICATIONS
TECHNICAL DATA AND DIMENSIONS
Model M26i & M26i-50
Gas Type Natural LPG
Gas Input (MJ/h) 200 200
Inlet Pressure (kPa) 1.13 2.75
Main Injector (mm) Ø1.8 Ø1.3
Test Point Pressure High/Low (kPa) 0.70 / 0.17 0.89 / 0.22
Water Heating Capacity (Raised 25°C) 26 L/min 26 L/min
Max. Water Pressure (kPa) 1000 1000
Min. Water Pressure Required To Operate (kPa) 150 150
Relief Valve Pressure Setting (kPa) 1200 1200
Gas Connection G3/4 (20mm)
Water Connections G1/2 (15mm)
Ingress Protection Rating (AS60529) IPX4
Ignition Electronic
Rated Voltage AC 240V/50Hz
Net Weight (kg) 18.8
Gross Weight (kg) 19.2
Product Dimensions (mm) 628 x 413 x 177
Package Dimensions (mm) 735 x 455 x 267
IAPMO Gas Mark Approval Number GMK10706
IAPMO Water Mark Approval Number WMKA22451
WARNING
THIS APPLIANCE MAY DELIVER WATER AT HIGH TEMPERATURE. REFER TO
THE PLUMBING CODE OF AUSTRALIA (PCA), LOCAL REQUIREMENTS AND
INSTALLATION INSTRUCTIONS TO DETERMINE IF ADDITIONAL DELIVERY
TEMPERATURE CONTROL IS REQUIRED.

7
NOTE
• The appliances performance will be reduced where water pressure is below 340 kPa
• For information relating to the burner test point pressures and injector sizes, please
refer to the name plate (located on the right hand side of the case for each model -
please refer to p.10)
• For information relating to overall dimensions and connection points refer to
diagrams in section 4 (please refer to p.8)
• Before installing in areas over 1500 m above sea level, contact the manufacturer for
instructions.
WARNING
• Do not spray aerosols in the vicinity of this appliance while it is in operation.
• Do not use or store flammable materials in or near this appliance.
• Do not place articles on or against this appliance.
• Do not modify this appliance
4. INTRODUCTION
• This manual provides information necessary for the installation, operation, & maintenance of the water heater
• The model description is listed on the name plate which is attached to the right side of the case of the water
heater (please refer to p.10)
• Please read all installation instructions completely before installing this product.
• The unit is an instantaneous water heater designed to efficiently supply endless hot water on demand
• The principle of the water heater is shown below:
NOTES
The appliance will operate at reduced performance below 340 kPa water pressure.
For information relating to burner test point pressures and injector sizes refer to the name
plate located on the right hand side of the case for each model. (please refer top.8 )
For information relating to overall dimensions and connection points refer todiagrams.
(Please refer top.6 )
Before installing in areas over 150 0 m above sea level, contact the manufacturer for
instructions.
4. INTRODUCTION
This manual provides information necessary for the installation, operation, and maintenance of
the water heater.
The model description is listed on the name plate which is attached to the right side of the case of
the water heater. (Please refer to p.8 )
Please read all installation instructions completely before installing this product.
The Water Heater is an instantaneous,water heater designed to efficiently supply endless hot
water for the demand.
The principle of the water heater is shown below:
This diagram illustrates the water heater design concepts only and is not accurate to the one
physical description.
7
Exhaust
Heat
Exchanger
Thermistor
Hot Water
Outlet Cold Water
Inlet
Gas Inlet
AC
240 V
Flow
Sensor
Burner
Gas Valve
Fan
Computer board
This diagram illustrates the water heater design concepts only and is not accurate to the physical description.
HOW IT WORKS
• A hot water tap is turned on
• Water enters the water heater
• The water flow sensor detects the water
flow
• The computer automatically ignites the
burner
• Water circulates through the heat
exchanger and then gets hot
• The computer modulates the gas supply
valve and water flow to produce the
right amount of hot water at the correct
temperature
• When the tap is turned off, the unit shuts
down

8
ACCESSORIES
Check that the installation and operation manual and screws are included with the unit.
Screws x 4 Manual
6 4
7 0
8 4
6 4
7 0
ACCESSORIES
Check that the installation and operation manual and screws are included with the unit.
Screws ™4
Manual
4.1 DIMENSION AND CONNECTION POINS
8
7 0
8 4
6 4
7 0
ACCESSORIES
Check that the installation and operation manual and screws are included with the unit.
Screws ™4
Manual
4.1 DIMENSION AND CONNECTION POINS
8
Hot water outlet
Cold water intlet
C O N N E C T I O N P O I N T S
GAS intlet

9
4.2 SAFETY GUIDELINES
Ensure the following warnings and instructions are read and understood before commencing installation.
WARNING
• Installation and service must be performed by a qualified installer (for example, a
licensed plumber or gas fitter)
• The installer (licensed professional) is responsible for the correct installation of
the water heater and for compliance with all relevant national, state and local
regulations
• The water heater must be installed INDOORS ONLY. DO NOT install the water
heater outdoors
• Not to be used as a pool heater
GENERAL GUIDELINES
• Carefully plan where you intend to install the water heater. Please ensure:
The water heater will have open air situation with natural ventilation;
Locate the water heater where water leakage will not damage surrounding areas and remove any transit
protection.
• Check the name plate and gas type label for the correct GAS TYPE, GAS PRESSURE, WATER PRESSURE
and ELECTRICAL RATING; If this unit does not match operating condition, do not install and consult with
manufacture.
• If any problem should occur, turn off the gas and all hot water taps. Then call a trained technician or the gas
company or the manufacturer

10
WARNING
• Water temperatures above 50ºC can cause severe burns or death from scalding.
Children, the disabled and the elderly are at a high risk of being injured. Feel the water
temperature before bathing or showering. Do not leave children, disabled persons, or
the elderly unsupervised. The Australian Standards AS 3498 gives full details of the
requirements for supply of controlled temperature to ablution outlets (bathrooms) and is
required to be conformed to under all plumbing codes within Australia
PROHIBITED
• Do not store or use gasoline or other flammables, vapors, or liquids in the vicinity of this
appliance. Vapors from flammable liquids will explode and catch fire causing death or
severe bums
• Do not reverse the water and/or gas connections as this will damage the gas valves and
can cause severe injury or death.
• Do not use this appliance if any part has been in contact with or been immersed in
water. Immediately call a licensed plumber, a licensed gas fitter, or a professional service
technician to inspect and/or service the unit if necessary
• The warranty will not be covered if the heat exchanger is damaged due to freezing. Refer
to the section on the Freeze Prevention on p. 27 for more information
5. INSTALLATION
The water heater requires careful and correct installation to ensure safe and efficient operation.
This manual must be followed . Read the “SAFETY GUIDELINES” and the “IMPORTANT” sections at the
beginning of this manual.
5.1 CONFIRMING APPLIANCE SUITABILITY
Check the gas type label and the name plate for the correct gas type, gas pressure, water pressure and
electrical rating for your application. Do not install this unit if these requirements are not met.
! WARNING
ƔWater temperatures above 50 ℃can cause severe burns or death from scalding. Children,
the disabled and the elderly are at a high risk of being injured. Feel the water temperature
before bathing or showering. Do not leave children, disabled persons, or the elderly
unsupervised. The Australian Standards AS 3498 gives full details of the requirements for
supply of controlled temperature to ablution outlets (bathrooms) and is required to be
conformed to under all plumbing codes within Australia.
PROHIBITED
ƔDo not store or use gasoline or other flammables, vapors, or liquids in the vicinity of this
appliance
. Vapors from flammable liquids will explode and catch fire causing death or
severe bums
.
ƔDo not reverse the water and/or gas connections as this will damage the gas valves and
can cause severe injury or death. Follow the diagram on p.  and 3 when installing your
water heater.
ƔDo not use this appliance if any part has been in contact with or been immersed in water.
Immediately call a licensed plumber, a licensed gas fitter, or a professional service
technician to inspect and/or service the unit if necessary.
ƔThe warranty will not be covered if the heat exchanger is damaged due to freeing. efer
to the section on the Freee Prevention System on p. 2 for more information.
5.
INSTALLATION
The water heater requires careful and correct installation to ensure safe and efficient operation.
This manual must be followed . ead the SAFT GIDINS and the IMPOTANT
sections at the beginning of this manual.
5.1 CONFIRM THE APPLIANCE
SUITABILITY
Check the gas type label and the name plate for the correct gas type, gas pressure, water pressure
and electrical rating for your application. Do not install this unit if these requirements are not met.
Gas Type abel
Position on Case
ating abel Position
on Case
10

11
CAUTION
• This equipment is not suitable for pool or spa heating.
• Water hardness may affect the water heater performance. It is important that the water heater is installed in
water conditions that are suitable for long term operation.
• This is a water heating apparatus only and the delivered water quality is dependent upon the quality of water
supplied to this system.
• The connection, attachment, integration or general association of other equipment or parts not specified by
the water heater which either directly or indirectly affect the operation or performance of this equipment –
could void the warranty.
• The manifold pressure is preset at the factory. It is computer controlled and should not need adjustment.
• Occupants are advised of any inconveniences which could occur such as disconnection of hot water
services.
• Please follow the electrical earthing procedure outlined in AS/NZS3000, AS/NZS3500 before cutting or
uncoupling existing metallic pipework.
• It should be as close as practical to the hot water outlets to minimise heat loss and cost.
• The water heater does not require a fireproof back plate if installed on timber wall.
5.2 SELECTING SUITABLE INSTALLATION LOCATION
Carefully read this section before installation, and when you select the location for installing the water heater,
the following precautions should be considered.
• Although the water heater is designed to operate with minimal noise level, you should not install the unit on a
wall adjacent to a bedroom, or a room that is intended for quiet study or meditation, etc.
• Locate your heater close to a drain where leakage will not do damage to surrounding areas. As with any
water heating appliance, the potential for leakage at some time in life of the product does exist.
WARNING
• Every care is taken to warn occupants of the building and the public of any injury that may occur
from falling tools, open trenches, water connections or any other general hazard.
• Make sure the water heater will have sufficient combustion air and natural ventilation.
• Keep the area around the water heater clean. Particles may clog the air vent, reduce fan
function, or cause improper combustion
• Locate unit for easy access and maintain clearance for service and maintenance. Install the unit
so that it can be connected or removed easily
• The water heater must be installed INDOORS ONLY. DO NOT install the water heater outdoors.
Not to be used as a swimming pool heater
• Do not locate your water heater in a pit or any location where gas and water can accumulate.
• Please check the proximity of gas & electrical connections so as not to create a hazard and
avoid access problems for other services
• It must be located in accordance with the requirements of AS/NZS5601 and have sufficient
clearances from eaves, windows, vents etc. – see the diagram on the p.12
• “Exemption from Prescribed Statutory Requirement”: AS/NZS5601-2000 Clause 6.9.3. This
relates to the physical separation distance specification where multiple appliances are employed.
That equates to a minimum 150mm horizontal flue separation distance allowing appliances to be
placed side by side in the same vertical plane
• Most load bearing walls such as brick, brick/veneer, weatherboard and stud-frames are suitable
locations
• Securely fasten the unit to the wall with screws or bolts in the top and bottom brackets. A
minimum of two top and bottom must be used

12
5.3 LOCATION OF FLUE TERMINALS OF BALANCED FLUE, ROOM-SEALED,
FAN-ASSISTED OR OUTDOOR APPLIANCES - AS/NZS 5601.1:2013 - FIGURE 6.2 (in part)
Shadingindicates prohibited area forflueterminals
=Flueterminal
T= GasmeterM
=Mechanicalairinlet
I=Electricitymeter or fusebox P=Fan-assistedapplianceonly
Z
Direction of
discharge
SeeNote1 SeeNote1
Openinginto
abuilding
T
T
T
T
T
T
C
M
d
d
e
e
h
j
j
j
n
b
f
a
h
P
Z
k
k
g
g
I
T
Door
NOTE
• All disturbances are measured to the nearest part of the terminal.
• 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.
• For appliances not addressed above acceptance should be obtained from the
technical regulator.

13
WARNING
This unit must be installed indoors and must NOT be installed outdoors.
Never use this unit where no compulsory gas supply and exhaust pipe is installed.
WARNING
This unit must be installed indoors and must Not be installed outdoors. Never use this
unit when No compulsory gas supply and exhaust pipe is installed.
!
13
M out th e unit uprig h t with out inclina tion a ccording to th e D imension sh own
Mount the unit upright without inclination according to the dimension shown
WARNING
This unit must be installed indoors and must Not be installed outdoors. Never use this
unit when No compulsory gas supply and exhaust pipe is installed.
!
13
M out th e unit uprig h t with out inclina tion a ccording to th e D imension sh own

14
5.4 GAS CONNECTION
CAUTION
• Turn off the electric power to the water heater and manual gas valve located on the outside of the unit before
beginning gas connection.
• Confirm the position of the gas inlet. Do not connect water line to gas inlet. It may cause severe damaged.
5.5 SIZING AND CONNECTION SUITABILITY
Check the gas type label to make sure that the unit was built for the type of gas you will be using, and that the
gas inlet pressure is within the appropriate range (please refer to p.6)
• Gas pressure below this specified range for the water heater and/or insufficient gas volume will adversely
affect performance
• Inlet gas pressure must not exceed the above maximum values; gas pressure above the specified range will
cause dangerous operating conditions and damage to the unit
• Until testing of the main gas line supply pressure is completed, ensure the gas line to the water heater is
disconnected to avoid any damage to the water heater
• Size the gas piping according to AS/NZS5601 installation code for the correct pipe sizing for the water
heater
• Always use approved connectors to connect the unit to the gas line. Always purge the gas line of any debris
before connecting to the water heater
• Install a manual gas shut-off valve between the water heater and the gas supply line.
• The regulator is preset at the factory. It is computer controlled and is not to be adjusted by any person other
than a qualified service provider
• When the gas connections are completed, it is necessary to perform a gas leak test either by applying soapy
water to all gas fittings and observing for bubbles or by using a gas leak detection device
WARNING
Conversion of this unit from natural gas to propane or propane to natural gas
cannot be done in the field. Contact your local retailer or distributor to get the
correct unit for your gas type.

15
5.6 MEASURING INLET GAS PRESSURE AND TESTING FOR GAS LEAKAGE
The appliance and its gas connections must be measured for inlet gas pressure and leak tested before placing
the unit in operation for safe and effective operation. This is only to be done by a licensed professional.
1. Remove the screw for pressure port
(located on the gas inlet)
2. Connect the manometer to the
pressure port
3. Check the inlet gas pressure
• Shut off the manual gas valve on the supply gas line.
• Open a faucet. The unit should turn on and the gas in the gas pipe line should be purged. Leave the faucet
on to keep the unit running until the unit shuts down due to lack of gas supply. Then shut the faucet off.
• Remove the screw for the pressure port located on the gas inlet of the water heater shown in the diagram
above
• Connect the manometer to the pressure port.
• Re-open the manual gas valve. Check to see that there are no gas leaks
• Open some of the fixtures that use the highest flow rate to turn on the water heater
• Check the inlet gas pressure. When the water heater is on a maximum operation capacity, the inlet gas
pressure point must be within the appropriate range (please refer to p.6)
• This appliance and its individual shut-off valve must be isolated from the gas supply piping system by
unplugging the unit and turning off the main gas valve during any pressure measuring stage of the gas
supply piping system at test pressures above 3kPa.

16
5.7 WATER CONNECTIONS
WARNING
Do not reverse the hot outlet and cold supply line connections to the water heater
as this will cause your heater to operate improperly.
• All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for
potable water systems
• A manual shut off valve must be installed on the cold water inlet to the water heater between the main water
supply line and the water heater
• Only a gate valve or a ball valve is to be used on the cold water supply
• No stop taps or check valves are to be used as this will void the warranty and damage the water heater.
• Check the cold water pressure and if above 1000 kPa an approved limiting valve must be fitted
• Before installing the water heater, flush the water line to remove all debris, and after installation is complete,
purge the air from the line. Failure to do so may cause damage to the heater.
• There is a wire mesh filter to discourage debris from entering your heater. Clean filter after initial installation to
ensure no debris from the pipe work has clogged it (refer to diagram on following page).

17
3. REMOVE BY TURNING
COUNTER CLOCKWISE AND
THEN CLEAN AND REPLACE
1. TURN OFF THE WATER INLET
SUPPLY VALVE.
2. OPEN A HOT WATER TAP TO
RELEASE THE LINE PRESSURE
NOTE
This filter must be cleaned as part of regular maintenance.
ƔAll pipes, pipe fittings, valves and other components, including soldering materials, must be suitable
for potable water systems.
ƔA manual shut off valve must be installed on the cold water inlet to the water heater between the main
water supply line and the water heater.
ƔOnly a gate valve or a ball valve is to be used on the cold water supply.
ƔNo stop taps or check valves are to be used as this will void the warranty and damage the water heater.
ƔCheck the cold water pressure and if above 000 kPa an approved limiting valve must be fitted.
ƔBefore installing the water heater, flush the water line to remove all debris, and after installation is
complete, purge the air from the line. Failure to do so may cause damage to the heater.
ƔThere is a wire mesh filter to discourage debris from entering your heater. Clean filter after initial
installation to ensure no debris from the pipe work has clogged it.
! WARNING
Do not reverse the hot outlet and cold supply line connections to the water heater as this
will cause your heater to operate improperly.
MOV B TNING
CONT COCWIS AND
THN CAN AND PAC
.TN OFF TH WAT
INT SPP VAV.
2.OPN A HOT WAT TAP
TO AS TH IN PSS.
FIT
This filter must
be cleaned as part of regular maintenance.
NOTE
17
JSG52-26VH31

18
5.8 ELECTRICAL CONNECTIONS
• The water heater must be electrically grounded. Do not attach the ground wire to either the gas or water
piping.
• The water heater requires an AC 240V 50Hz electrical power supply and draws a current of 0.8A.
• The weather-proof power point should be no more than 1 meter from the base of the water heater for easy
access.
• Install the power switch so that the electrical power can be switched off if necessary.
• If the cord supplied with this appliance must be replaced, it must be replaced with appliance wiring material
supplied by the Manufacturer.
5.8 ELECTRICAL CONNECTIONS
ƔThe water heater must be electrically grounded. Do not attach the ground wire to either the gas or
water piping.
ƔThe water heater requires an AC 240V 50H electrical power supply and draws a current of 0.8A.
ƔThe weather-proof power point should be no more than  meter from the base of the water heater for
easy access.
ƔInstall power switch so that the electrical power can be switched off if necessary.
ƔIf the cord supplied with this appliance must be replaced, it must be replaced with appliance wiring
material supplied by the Manufacturer.
Weather-proof Power Point
! WARNING
When servicing or replacing parts within the water heater, label all wires prior to
disconnection to facilitate an easy and error free reconnection. Wiring errors can cause
improper and dangerous operation. Verify proper operation after servicing
18
Weather-proof Power Point
WARNING
When servicing or replacing parts within the water heater, label all wires prior to
disconnection to facilitate an easy and error free reconnection. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.

19
6. INSTALLATION OF FLUE PIPE
1. The maximum length flue pipe is 10 metres
10. Installation guide of flue pipe
32
1The maximum length flue pipe is 10 meters
2、Each 9 0 ° elbow is equal to 1.5m straight pipe
φ125~ φ135
18 0
2
19 8
6 29
MAX : 7 M
As shown in the figure below, tap in expansion screws for fixation, hang the unit vertically and screw it down
with nuts, insert plastic plugs below it and screw down self-tapping screws
10. Installation guide of flue pipe
32
1The maximum length flue pipe is 10 meters
2、Each 9 0 ° elbow is equal to 1.5m straight pipe
φ125~ φ135
18 0
2
19 8
6 29
MAX : 7 M
2. Each 90° elbow is equal to 1.5m straight pipe
10. Installation guide of flue pipe
32
1The maximum length flue pipe is 10 meters
2、Each 9 0 ° elbow is equal to 1.5m straight pipe
φ125~ φ135
18 0
2
19 8
6 29
MAX : 7 M

20
3. Vertical flue pipe needs to be installed with a condensate collector at the outlet of the water heater
3. The v l flue pipe needs to be installed with a condensate collector at the outlet of the water
heater
33
MAX: 10M
In order to ensure the normal use of the product after connecting the long pipe, please select different
dip switch settings according to the actual length of the pipe to ensure the safety (refer to table below)
Length of Flue Pipe
Less than 2 metres
3. The v l ue pipe needs to be installed with a condensate collector at the
no
outlet of the water
heater
33
MAX: 10M
MAX: 0.75M
ON DIP
1234
ON DIP
1234
ON DIP
1234
ON DIP
1234
Len th of
smoke pipe
0-2m
2-4m
4-6m
6-10m
more than 0.75m.
Between 2 and 4 metres
3. The v l ue pipe needs to be installed with a condensate collector at the
no
outlet of the water
heater
33
MAX: 10M
MAX: 0.75M
ON DIP
1234
ON DIP
1234
ON DIP
1234
ON DIP
1234
Len th of
smoke pipe
0-2m
2-4m
4-6m
6-10m
more than 0.75m.
Between 4 and 6 metres
3. The v l ue pipe needs to be installed with a condensate collector at the
no
outlet of the water
heater
33
MAX: 10M
MAX: 0.75M
ON DIP
1234
ON DIP
1234
ON DIP
1234
ON DIP
1234
Len th of
smoke pipe
0-2m
2-4m
4-6m
6-10m
more than 0.75m.
Between 6 to 10 metres
3. The v l ue pipe needs to be installed with a condensate collector at the
no
outlet of the water
heater
33
MAX: 10M
MAX: 0.75M
ON DIP
1234
ON DIP
1234
ON DIP
1234
ON DIP
1234
Len th of
smoke pipe
0-2m
2-4m
4-6m
6-10m
more than 0.75m.
3. The v l ue pipe needs to be installed with a condensate collector at the
no
outlet of the water
heater
33
MAX: 10M
MAX: 0.75M
ON DIP
1234
ON DIP
1234
ON DIP
1234
ON DIP
1234
Len th of
smoke pipe
0-2m
2-4m
4-6m
6-10m
more than 0.75m.
Roof Clearances