GAS 5 & 10 FLOW GA5FLP - GA5FNG | GA10FLP - GA10FNG INSTRUCTION MANUAL GAS TANKLESS WATER HEATER Keep this manual with you after your unit has been installed, you may need it for further technical information. U.S.A +1 (855) 627-3955 www.marey.
Congratulations! You've just purchased a new Marey Gas Flow tankless water heater and will soon begin to enjoy the benefits of "going tankless." The availability of instant hot water, combined with the unit's outstanding energy efficiency and space saving design, will quickly convince you that you've made the best decision for meeting your home's hot water needs.
INDEX QUICK START GUIDE PACKING LIST IMPORTANT WARNINGS FUNCTIONS AND FEATURES INSTALLATION OPERATING INSTRUCTIONS INSTRUCTIONS FOR DAILY MAINTENANCE CONSTRUCTION AND PART IDENTIFICATION EXPLODED VIEW TECHNICAL PARAMETERS 04 05 05 06 08 13 14 15 16 17 TROUBLESHOOTING GUIDE 18 CUSTOMER SERVICE 19
QUICK START GUIDE POWER GAS MODELS WARNING Working with gas can be dangerous. If you are not familiar with local building codes and basic gas plumbing practices please employ a professional to install your water heater. 1. Securely mount your water heater to the wall in an appropriate location using the supplied hardware. 2. Install the venting (4" for the 5L) per local building codes and the instructions supplied. 3. Connect the gas lines (all connections are ½").
PACKING LIST 1. WATER HEATER - QTY 1 2. OPERATING INSTRUCTIONS - QTY 1 3. MOUNTING SCREWS - 4 SETS IMPORTANT WARNINGS - You MUST install this water heater according to all directions and specifications contained in this manual. Failure to properly install the heater can result in property damage or severe injury or death by burning, explosion, or asphyxiation due to carbon monoxide. - You MUST check the exhaust flue for obstructions at the initial installation and at least annually thereafter.
- Do NOT install the water heater in a sealed room or in a room with poor air circulation. - You MUST install the exhaust pipe to properly discharge the exhaust gases. - Do NOT block the exhaust pipe or the air inlet at any time. This can cause incomplete combustion and can lead to gas poisoning. - When the water heater is in use, do NOT touch the body of the heater. Touch the knobs only, as the body of the heater can become very hot to the the touch.
4. Low water pressure start up function: These unit requires 2 - 2.9 PSI to fire, making it suitable for users with low water pressure, or those who are using it to supply hot water to upper floors. Please note that the water flow and water pressure are not the same. Sufficient flow is always required to keep the overheat safety sensor from shutting the unit off. 5.
The water heater must not be exposed to strong winds. DRAWING 02 The water heater must not be installed outside. DRAWING 03 2. Don't expose the water heater to the strong wind or rain. 3. Use only the type of gas that is specified on the name plate. 4. All gas connections should be made by a professional. 5. Don't use pipes, tubing or other connections that are aging or cracked. 6. Do not use with water pressures lower than 8 PSI. Do not use with lower GPM's than indicated on the flow chart for your unit.
c) When utilizing expansion screws for sheetrock mounting, hold the unit on the wall where you want it mounted. Mark with a pencil the (4) mounting holes. Remove the unit from the wall, and drill 3/8" holes on each mark. (See drawings below). d) Install the expansion bolt into the drilled hole. Hang the unit utilizing the screws supplied.
HOT WATER OUTLET - The hot water outlet joint is ½" NPT pipe thread. - The hot water outlet should be connected by flexible tubing or rigid PVC of the type intended for use with hot water. - The inner diameter of the water outlet pipe (including the valve) shouldn't be less than 3/8". Larger diameter pipe is acceptable as long as the appropriate adapters are used. - After connecting, fully open the cold water supply to confirm the flow of water and to check for leaks. Correct leaks as necessary.
This kind of damage will result in water running freely into the space where the water heater is located, with can cause flooding. If your water heater is installed in a geographic location that sees very low sustained temperatures, you MUST terminate vent stack with a properly rated wind and rain cap. This will help prevent cold air from falling down into the water heater and causing freeze damage.
- If horizontal runs are necessary then they must always be sloped up at least .25" for every foot and must be kept shorter than 75% of the total vertical length. Never terminate the venting horizontally, you need the last bit of vertical run to "pull" the remaining gasses that may have cooled in the horizontal run. - If venting through the roof then the termination height will depend on your roof pitch (consult with an HVAC tech if unsure of needed lenght).
OPERATING INSTRUCTIONS Install two D Cell batteries. Check the door of the battery compartment for correct battery position. - Open the hot water on a nearby faucet. Confirm proper water flow through the unit and out of the faucet. (You should hear a "clicking" sound from the unit-this is the ignitor activating). Turn the water back off. - Start the gas supply. Check again for gas leaks using soapy water and correct as necessary. - Open the hot water faucet.
H D Sighting window Specification Winter/Summer knob Instruction L Gas controlling knob Water controlling knob DRAWING 06 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 shou Id be contacted for repair. 2. Do not block the exhaust pipe or the air inlet. This can cause incomplete combustion and lead to gas poisoning. 3. During operation, check the fire through the sight glass for normal combustion.
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.
EXPLODED VIEW DRAWING 08 16
EXPLODED VIEW TECHNICAL PARAMETERS TECHNICAL SPECIFICATIONS GAS 5 FLOW Gas Type Liquid Propane or Natural Gas Heat Loss Maximum Flow Rate Exhaust Discharge Mode Ignition GAS 10 FLOW 34,120 BTU/h 68,240 BTU/h 1.32 GPM - 5 LPM 2.64 GPM - 10 LPM Flue Duct Type Flue Duct Type 2D Cell Battery Powered (not included) Activation Pressure 2 PSI Safe Operating Water Pressure Liquid Propane or Natural Gas 2.9 PSI 2 PSI -145 PSI Hot Water Output per Minute 2D Cell Battery Powered (not included) 2.
TROUBLESHOOTING GUIDE Flame can’t be extinguished after closed Flameout when at ‘Low Temperature’ position Water still too hot when at ‘Low Temperature’ position Water not hot enough when turned to Abnormal sound during ignition Abnormal smell Yellow flame with smog Deflagration symptom during ignition Ignition failed after opening the water heater CASE Flameout during usage TROUBLESHOOTING SOLUTIONS Main gas valve not opened Completely open the gas valve or replace the gas tank with Main gas
Please feel free to contact us if you have any questions about our products, warranty service, or if you need assistance installing a unit. We also strive for continuous improvement, so we welcome your comments, feedback and suggestions. U.S.A Mainland (855) 627-3955 Puerto Rico & Caribbean (787) 727-0277 customerservice@marey.com www.marey.
