5
Heat
Exchanger
Thermistor
Computer
board
Hot Water
Outlet
Cold Water
Inlet
Gas Inlet
AC
240V
Flow
Sensor
Exhaust
Burner
Gas Valve
Fan
Fan
Computer
board
Heat
Exchanger
Thermistor
Gas
Inlet
AC240V
Gas
Valve
Flow
Sensor
Hot Water
Outlet
Cold Water
Inlet
Exhaust
Burner
This manual provides information necessary for the installation, operation, and maintenance of
the water heater.
Ɣ
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.9)
Ɣ
Please read all installation instructions completely before installing this product. Ɣ
The Water Heater is an instantaneous, water heater designed to efficiently supply endless hot
water on demand.
Ɣ
The principle of the water heater is shown below: Ɣ
3. INTRODUCTION
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.
3. The water flow sensor detects the water flow.
4. The computer automatically ignites the burner.
5. Water circulates through the heat exchanger and is heated
6. The computer will modulate the gas supply valve and water flow to produce the right amount of hot
water at the correct temperature.
7. When the tap is turned off, the unit shuts down.
M20/M20-50 UNIT M26/M26-50 UNIT
WARNING
Do not spray aerosols in the vicinity of this appliance while it is inoperation.
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
!
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