Table of Contents
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Installation And Operation Guide
™
WaterMark
WM-022451
GMK10177
MODELS:
M20
M20-50
M26
M26-50
FOR EXTERNAL INSTALLATION ONLY
DO NOT REMOVE
®
AUSTRALIA AND NEW ZEALAND
GAS SAFETY CERTIFICATION
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.
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Table of Contents
Related Manuals for Midea M20
Summary of Contents for Midea M20
- Page 1 Installation And Operation Guide MODELS: M20-50 M26-50 FOR EXTERNAL INSTALLATION ONLY DO NOT REMOVE ® ™ Thank you very much for purchasing our water heater. Before installing and operating your water heater, please read this manual WaterMark carefully and keep it for future reference.
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Page 3: Table Of Contents
8.1. UNIT DRAINING AND FILTER CLEANING................21 8.2. GENERAL TROUBLESHOOTING ..................22 8.3. PCB ERROR CODES ......................24 8.4. WIRING DIAGRAM .......................26 8.5. SIDE DIVERTER ........................27 8.6. WATER FLOW AND WATER TEMPERATURE (M20) ............30 8.7. WATER FLOW AND WATER TEMPERATURE (M26) ............30 9. WARRANTY CONDITIONS......................31... -
Page 4: Important Notes
1.3 PLUMBING NOTES PLEASE NOTE M20 and M26 model is supplied factory pre-set at Nominal 70°C maximum outlet water temperature to comply with the requirements of AS 3498 Clause 7.2.2. The M20 and M26 unit REQUIRES a temperature control device to be installed. - Page 5 CONTROLLER 3 Power Priority (OPTIONAL) ENSUITE CONTROLLER 2 Power Priority LAUNDRY (OPTIONAL) BATHROOM CONTROLLER 1 Power Priority (OPTIONAL) KITCHEN WATER COLD OUTLET WATER INLET INLET MIN. 2 METRES (FROM HOT OUTLET TO NEAREST HOT WATER TAP/OUTLET) 50ºC PRESET UNIT WARNING — THIS APPLIANCE MUST ONLY BE INSTALLED IN ACCORDANCE WITH THE ACCEPTABLE PLUMBING CONFIGURATIONS SPECIFIED IN THESE INSTRUCTIONS.
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Page 6: Specification
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. 2. SPECIFICATIONS TECHNICAL DATA AND DIMENSIONS MODEL M20/M20-50 M26/M26-50 Natural Propane Natural Propane Gas Type... -
Page 7: Introduction
Hot Water Outlet Inlet Outlet M20/M20-50 UNIT M26/M26-50 UNIT The diagrams are representative only and do not truly represent the physical product. 1. A hot water tap is turned on. 2. Water enters the water heater via the cold water inlet. -
Page 8: Dimensions And Connection Points (M20)
3.1 DIMENSIONS AND CONNECTION POINTS (M20/M20-50) REMOTE CONTROLLER CABLE POINT WIFI DEVICE POINT HOT WATER GAS INLET OUTLET 3/4” (NOM 20mm) 1/2” (NOM 15mm) PRESSURE RELIEF COLD WATER INLET VALVE & WATER 1/2” (NOM 15mm) INLET FILTER... -
Page 9: Dimensions And Connection Points (M26)
3.2 DIMENSIONS AND CONNECTION POINTS (M26/M26-50) REMOTE CONTROLLER CABLE POINT WIFI DEVICE POINT HOT WATER GAS INLET OUTLET 3/4” (NOM 20mm) 1/2” (NOM 15mm) COLD WATER INLET PRESSURE RELIEF 1/2” (NOM 15mm) VALVE & WATER INLET FILTER... -
Page 10: Safety Guidelines
3.3 SAFETY GUIDELINES Ensure the following warnings and instructions are read and understood before commencing installation. WARNING Installation and service must be performed by a licensed professional (for example, a licensed plumber or gas fitter). The licensed professional is responsible for the correct installation of the water heater and for compliance with all relevant national, state and local regulations. -
Page 11: Installation
Gas Type Label Position on Unit Rating Label Position on Unit NOTE: M20 UNIT SHOWN IN EXAMPLE 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. -
Page 12: Selecting A Suitable Location For Installation
4.2 SELECTING SUITABLE LOCATION FOR INSTALLATION Carefully read this section before installation, and selecting the location for installing the water heater. The following precautions should be considered. CAUTION This is a water heating apparatus only and the delivered water quality is dependent upon the quality of water supplied to this system. -
Page 13: Clearances For Outdoor Heater Locations
4.3 CLEARANCES FOR OUTDOOR HEATER LOCATIONS-AS/NZS 5601.1:2013 Figure 1 Minimum clearances (mm) Ref. Item Natural draft Auxiliary fan Below eaves, balconies and other projections From the ground, above a balcony or the other surface From a return wall or external corner From a gas meter (M) (vent terminal location of regulator) From an electricity meter or fuse box (P) From a drain or soil pipe... -
Page 14: Gas Connection
4.4 GAS CONNECTION POWER CORD GAS INLET SUPPLY NOTE: M20 UNIT SHOWN IN EXAMPLE GAS VALVE 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. -
Page 15: Measuring Inlet Gas Pressure And Testing Gas Leakage
4.6 MEASURING INLET GAS PRESSURE AND TESTING GAS LEAKAGE The appliance and its gas connections must be fully tested before the unit is put into operation for proper performance and safety. NOTE: M20 UNIT SHOWN IN EXAMPLE Shut off the manual gas valve on the supply gas line. -
Page 16: Water Connections
4.7 WATER CONNECTIONS FILTER AND DRAIN PLUG NOTE: M20 UNIT SHOWN IN EXAMPLE HOT WATER OUTLET GATE OR BALL VALVE ON INLET COLD WATER INLET All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for potable water systems. -
Page 17: Remote Controller
5. REMOTE CONTROLLER (OPTIONAL) Remote controllers are available as an optional extra. The water heater can be installed with up to three remote controllers. Each remote controller has two functions which can adjust the set temperature and indicate the error code. PRIORITY function: The controller that is activated first (i.e. -
Page 18: Remote Controller Installation
5.1 REMOTE CONTROLLER INSTALLATION The remote controller shall be connected by a cable with the specifications below: a. Minimum 18AWG wire b. Maximum run of 60m Attach the remote control to the wall with screws supplied. 102mm WARNING DO NOT locate the remote controls where they may come into contact with water. DO NOT position the remote controls in the vicinity of chemicals. -
Page 19: Connection Of Remote Controller Wiring To The Water Heater
5.2 CONNECTION OF REMOTE CONTROLLER WIRING TO THE WATER HEATER 1. Turn off the power supply to the water heater. 2. Remove the front cover from the water heater. There are 4 screws on the front cover. 3. Feed the remote wires through the hole on the bottom of the case. 4. - Page 20 Put the remote wires though the hole on the bottom of the case. Power Power Power Priority Priority Priority Connect the wire of the remote control to the PCB in this position.
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Page 21: Initial Operation
6. INITIAL OPERATION FOR YOUR SAFETY, READ BEFORE OPERATING: Check the GAS and WATER CONNECTIONS for leaks before startup for the first time. Open the main gas supply valve to the unit using only your hand to avoid any spark. Never use tools. -
Page 22: Normal Operation
8. MAINTENANCE AND SERVICE The water heater should be checked at least once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician. The water heater’s lifetime may be extended by regular maintenance. 7. -
Page 23: Maintenance And Service
8. MAINTENANCE AND SERVICE The water heater should be checked at least once a year or as necessary by a licensed technician. If repairs are needed, any repairs should be done by a licensed technician. The water heater’s lifetime may be extended by regular maintenance. WARNING Turn off the electrical power supply and close the manual gas control valve and the manual water control valve before servicing. -
Page 24: General Troubleshooting
8.2 GENERAL TROUBLESHOOTING ~ TEMPERATURE and AMOUNT OF HOT WATER ~ PROBLEM POSSIBLE SOLUTIONS The time it takes to deliver hot water from the water heater to your fixtures depends on the length of It takes long time to get hot water at piping between the two. - Page 25 ~ WATER HEATER ~ PROBLEM POSSIBLE SOLUTIONS Is the flow rate over 3.0l/min? (p. 19) Check for the filter on cold water inlet. (p. 20) The Unit does not ignite when water Check for reverse connection and cross connection. goes through the unit. If you use the remote controller, is the power button turned on? (p.
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Page 26: Pcb Error Codes
8.3 PCB ERROR CODES The water heater is self diagnostic for safety and convenience when troubleshooting. If there is a problem with the installation or the unit, it will display an error code on the remote controller.Consult the following chart for each error code. When remote controller is installed Error Codes On the Remote controllers Error... - Page 27 Thermostat When the system starts or works normally, it is Turn off water flow or (overheating) detected that the overheating protection thermostat shut down to eliminate failure is disconnected, and the thermostat is judged to be faulty Outlet When the system is in a burning state, if the outlet Turn off water flow or temperature over temperature is detected to exceed 85°C for 3...
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Page 28: Wiring Diagram
BL------Blue BR------Brown R------Red G------Green Y------Yellow ground W------White PL------Purple to wire controller DIP Switch Temperature Settings M26/M20 M26-50/M20-50 wifi module anti-freeing heat water valve 36VDC fan valve C valve B output NT C valve A input NTC Networking microswitch... -
Page 29: Side Diverter
If you choose to include a side diverter, it must be installed by a professional Do not touch the flue diverter during operation as the surface will be extremely hot To ensure normal operation of the product when a side diverter is installed please configure the switches according to the below diagram. M26/M20 M26-50/M20-50... - Page 30 WARNING Make sure that the drain holes is facing down during installation Only authorised personnel can install a side diverter. The side diverter incorporates the following mechanical means to prevent incorrect installation, please pay attention: 1. Two screws are installed on the left side of the mounting bracket, and one screw is installed on theright side, as per image above.
- Page 31 Right side of flue gas outlet Left side of flue gas outlet The side diverter can be configured to have the flue gas outlet on either the left or the right side.To reverse the direction complete the following (as shown in the figure below): 1.Remove the fixed screw 2.Swap the A &...
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Page 32: Water Flow And Water Temperature (M20)
8.6 WATER FLOW AND WATER TEMPERATURE (M20) 5˚ 10˚ 15˚ 20˚ 38˚ 39˚ 40˚ 41˚ 42˚ 43˚ 44˚ 45˚ 46˚ 47˚ 48˚ 49˚ 50˚ 51˚ 52˚ 53˚ 54˚ 55˚ 56˚ 57˚ 58˚ 59˚ 60˚ 61˚ 62˚ 63˚ 64˚ 65˚ 70˚... -
Page 33: Warranty Conditions
10. WARRANTY CONDITIONS This gas water heater holds the following warranty periods from the date of purchase where installed in a residential application only: Product Labour Heat Exchanger 10 Years 3 Years Parts 3 Years 3 Years Controllers 1 Year 1 Year Installation Report &... - Page 34 Product is subject to change without notice. Please keep this manual for future reference A product of Chromagen Australia Pty Ltd. 17-23 Redwood Drive Dingley Village, 3172, VIC, Australia www.chromagen.com.au Installation Report & Warranty Registration age. Cut along dotted line and place in an envelope and address as follows: Chromagen Australia Pty Ltd 17-23 Redwood Drive, Dingley Village VIC 3172...