Marey 26HW70 A, Instructional Manual, Page: 7 / 33

- Continuously variable wind resistance feature: when the chimney or the gas exhaustion is
blocked, the built-in microcomputer system will detect and enhance the revolving speed of
the fan to eliminate the noxious gas. When the revolving speed is up to the limited speed,
the microcomputer system will send out an order to cut off gas and flame so as to protect
the gas water heater.
- Water-gas valve control: when the city water supply is cut off or the water outlet valve is
shut down, the gas water heater will stop working and power off.
- Over-pressure protection: when the water pressure supply is too high, the safety valve in
the gas water heater will release water pressure automatically to protect the gas water
heater from damage.
The water heater has an automatic drainage function. When the water inlet pressure of the
water heater exceeds 1.0MPa~1.2MPa, the water heater will automatically drain. Please do
not place objects around the water heater to avoid damage caused by water immersion of
the water heater. When the water heater automatically drains the water, it indicates that the
water system pressure is too high. After the pressure is reduced or the water valve is
closed, confirm that the pressure meets the requirements for using the water heater.
WARNING
- 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 to p.11)
- For information relating to overall dimensions and connection points refer to diagrams.
(Please refer to p.9,16)
- Installing in areas over 1500 m above sea level will reduce performance.
NOTES
07