1514
Do NOT use strong detergents, benzene, gasoline, or other flammable agents to 
clean the unit.
Regularly remove and wash the stainless steel filter in the cold water inlet.
During  operation,  take  note  of  the  flame  and  discontinue  use  if  abnormal 
combustion is detected.
Avoid accidents. DO NOT modify this unit in any way.
5L and 10L units
Battery box
Back plate
Heat exchanger
Burner
Ignition pin II
Thermocou
Water adjusting
valve
Microactive switch
Water discharge
valve
Water inlet pipe
Gas inlet pipe
Hot water
outlet pipe
Ignition module
Solenoid valve
Gas adjusting
valve
Ignition pin I
Temperature
controller
Gas -collecting
roof
Drawing 07
1. If a gas leak is detected at any time, close the main gas valve immediately.  The 
Marey service center or your local gas company should be contacted for repair.
2. Before going to sleep or leaving the house, the gas supply should be shut off.
3. Do not block the exhaust pipe  or the air inlet.   This can cause incomplete 
combustion and lead to gas poisoning.
4. During operation, check the fire through the sight glass for normal combustion.  
Check for a compact,  blue  flame.   Tall or excessively  orange  flames  indicate 
abnormal  combustion.    If  there is  abnormal  combustion,  close  the gas  valve 
immediately  and  contact  the  Marey  service  center  or  your  gas  company  for 
maintenance.
5. When outdoor temperatures are below 32 degrees F and pipe freezing may 
occur, any water remaining in the unit after use should be discharged to avoid 
freezing.  Water should be discharged in the following manner:
a) Turn off the gas supply valve, turn off the tap water supply valve, and turn the 
water temperature adjusting switch to the low temperature position.  Turn on the 
hot water supply valve and remove the water discharge valve to discharge the 
water remaining in the unit.  Reinstall the water discharge valve.
Check the gas pipes, hoses, and vent pipes regularly.  If you find joints that are not 
tightly secured or if there are cracks or corrosion anywhere, you should stop using 
the heater and perform the necessary maintenance immediately.
Check regularly for water or gas leaks and correct immediately.
Regularly clean the surface of the water heater to remove dirt or dust with a wet 
cloth, and then use a dry cloth to remove moisture.  For hard to remove dirt, please 
use a mild spray cleaner or detergent.
Gas controlling knob
Water controlling knob
Specification
Instruction
 Sighting Window
Winter/Summer knob
Drawing 06