® matey GA1T4CSALP | KISANGANI GAS THANKLESS WATER HEATER Installation and Operation Manual WARNING: tithe information in these constructions is notional artistry 2 firs 61 explosion mB result lapsing propellant damage, personal tir or dash: Drones sears transliterating or other flammable apes and Hayride ln die vicinity of aromatherapist aniline. WHAT TO DO IF YOU SMELL GAS: not touch any electrical switch; do not use any phone in your building.
Contents INTRODUCTION AND SAFETY WARNINGS INTRODUCTION 3 IMPORTANT SAFETY INSTRUCTIONS SAFETY WARNINGS 4 OPERATION DESCRIPTION OF OPERATION 6 OPERATING INSTRUCTIONS 7 EXTENDED SHUTDOWNS 13 COLD WEATHER WARNINGS 15 MAINTENANCE AND INSPECTION 16 TROUBLESHOOTING 19 DIAGNOSTIC CODES 22 INSTALLATION INSTALLATION GUIDELINES 25 PACKING LIST 26 LOCATION AND CLEARANCE REQUIREMENTS 27 TYPICAL INSTALLATION 27 MOUNTING 28 ELECTRICAL 29 GAS PIPING 31 GAS PIPING 32 AIR INTAKE AND EXHAUST (VENT) SYSTEM 33 START UP AND TES
INTRODUCTION AND SAFETY WARNINGS INTRODUCTION Thank you for purchasing a Mara Gas Thankless Water Heater. In order to ensure proper installation, safe operation, and long life, please carefully read these instructions. Installation should only be completed by licensed professionals. Use of a professional ensures the installation is in full compliance with all required building, plumbing and electrical codes. KEEP THIS MANUAL for future reference.
SAFETY WARNINGS {) ye DO NOT use a fuel gas that is not listed on the nameplate as compatible with the water heater. Abnormal combustion or a conflagration may occur which can cause a serious accident DO NOT use the unit if the vent piping has been damaged or altered in any way including cracking, separation, rusting, melting, etc. Improper venting may cause a buildup of Carbon Monoxide {CO} which can cause brain damage or death.
SAFETY WARNINGS (continued) This equipment shall not be operated without the vent pipe properly connected. The exhaust pipe must not terminate in an area where the exhausting vapor or collecting condensate could create a hazardous situation or cause property damage. Exhaust gases must be vented out of the building in compliance with all building codes. The exhaust piping is very hot during and for a period after use. Do not touch the pipe.
OPERATION DESCRIPTION OF OPERATION © Mara gas thankless water heaters provide an efficient reliable supply of hot water. © The temperature can be adjusted between 35°C 60°C {95°F et 140°F). © Only a small amount of water and a low water pressure {psi) are required for the unit. Unit requires 0.67 gpm {2.5 |/min} to enable the unit. Unit stays in operation until the flow drops below 0.53 gpm {2 © The burner ignition is electronic.
OPERATING INSTRUCTIONS Normal Operation This section of the manual instructs an owner on routine operating procedures and assumes that the water heater has already been installed, tested, and approved for operation. Initial start up requirements are detailed in the “Installation” section of this manual. Routine Start Up Follow this procedure for a heater that has been out of service. 1. Ensure all drain plugs are installed in unit. 2. Ensure all hot water use points {faucets, etc} are closed. 3.
Figure 2 Control Panel Diagram The failure mode displays when a failure occurs, the temperature display mode is "changed to the mode of failure display. ‘When the water temperature is above the lights are on, one by one from — the bottom to overcome. Mode function selection CONTROL PANEL INDICATIONS LED display 1. Indicates the “Temperature Set Point” when blinking. Displays the “Actual Temperature” when the display remains lit. 2. Displays both the “Preset Water Quantity” and the “Actual Water Quantity”.
TEMPERATURE CONTROL Set the Desired Temperature 1. The temperature adjustment range is 35°C 60°C (95°F 140°F}. Press the “OFF/ON” key. The temperature display unit lights up and displays the current temperature set point. The factory default set point is 42°C (107°F). Press the “UP” or “DOWN” key to set any desired temperature between 35°C (95°F) and 50°C {122°F). The temperature set point goes up or down by one degree with each press.
IMPORTANT! The volume measurement only keeps track of the water volume that passes through the water heater. For example, if hot water going to a tub is combined with cold water, the volume computed would not e representative of the total amount that may have filled the tub. This could lead to an overflow or damage! Monitoring the Volume Delivered Press the “MODE” key. The message “F3” will be displayed. Press the “UP” {or DOWN) key briefly.
WIRED REMOTE CONTROL PANEL The heater may be controlled by a wired remote control {OPTIONAL}. The controller can be located near a bath, shower or other location. JHE Ooo So mat oni TIL. HE Figure 3 Wired Remote Control Panel Remote Control Panel Indications “Combustion” When lit indicates that the water heater is operating and burning gas. “Override” — When indicator light is on, this wired control panel can change the temperature set point.
Remote Control Panel Functions {continued) To set priority: 1. Turn off the override if it is set on another controller. Press and hold the“Override” key to release priority. The Override indicator light will go out. 2. Select the new controller to take control. Press and hold the “Override” key on the wired operation panel which should have priority. The “Override” indicator will turn on and the temperature set point may be adjusted from this controller per below.
EXTENDED SHUTDOWN Extended Outage Procedure If a heater will be out of service for an extended amount of time, use the following procedure to protect the unit. NOTES Cold air may enter the unit through the air intake or the exhaust system. Take precaution for extended shutdowns even if unit is installed indoors in an area that does not allow direct exposure to freezing temperatures. Temperatures at or below 0°C {32°F) can cause permanent damage the unit and/or the piping system due to freezing.
AL warn Prevent water from being discharged on the floor to avoid damage. Prevent water contact with any electrical source in the vicinity. 7. Open the drain plugs and completely drain the water heater. 8. Continue draining to empty the whole hot water system. Note: Freezing temperatures below 0°C (32°F) can cause permanent damage to the heater and/or the piping system. 9. Reinstall the drain plugs and close the hot water faucets. 10.
COLD WEATHER WARNINGS Freezing Damage Potential and Precautions Freezing temperatures can damage the water heater and/or water piping. Freezing water expands rapidly and can create tremendous mechanical forces. Mechanical damage and pipe ruptures can result from only brief exposure to freezing temperatures. FREEZE damage is not covered under the manufacturer's warranty. For best results, completely shut down the system by following the Extended Outage Procedure section of this manual.
MAINTENANCE AND INSPECTION Routine Inspection The heater and exhaust piping will be hot during and shortly after use. Use caution when working in the area around the heater. To keep your water heater operating optimally please refer to the below recommended inspection and maintenance checklists. Mara recommends a periodic inspection performed by a qualified service technician. An annual inspection is normally sufficient. Frequent visual inspections by the owner are recommended.
MAINTENANCE PROCEDURES BURNER INSPECTION AND CLEANING 1. The burner must flame evenly over the entire surface of the burner head when operating correctly. 2. The flame should burn with a clear, blue, stable flame. 3. Presence of a yellow flame or of black deposits on the burner head indicates cleaning and/or burner replacement should occur. MAINTENANCE BLOWER 1. The fan motor is permanently lubricated and does not require periodic lubrication. 2.
LIME SCALE CLEANING PROCEDURE {continued} . Disconnect electrical power to the water heater. . Close the shutoff valves V3 and V4 on both the hot and cold water lines . Connect a hose H1 form the pump outlet to the cold water line V2 into the heater. . Connect drain hose H2 from the hot water outlet line V1 and route into five-gallon re circulation container. Pour approx. four {4} gallons of virgin, food grade, white vinegar or citric acid into pail. 6.
TROUBLESHOOTING For operating difficulties with your unit, please consul the following table for guidance. If you need further assistance, call Mara Heater Corp. toll free service and support line at 1-855-627-3955. Please have product information ready when you call including serial number, date of purchase and error code if shown on the control panel. Note: Please check water heater for an-error code and respond according to recommendations found in “Error Codes” portion of this manual.
Possible Cause Solution Hot water is not the right temperature {too hot or too cold) Temperature set point was reset due to power outage. Temperature set point incorrect. Flow is beyond capacity Incoming water is too warm Power outage restores default settings and custom set points must be re-entered to unit A remote wired controller is controlling temperature set point.
Possible Cause Solution Vent system trouble Vent system is restricted in some manner. Check air intake and exhaust ducts to ensure they are not damaged, corroded, blocked, etc. “Smoke” observed coming from exhaust system during cold temperatures Water vapor produced during combustion is condensed in the exhaust as the hot gas is cooled by the outside air. None. Normal operation. Water leaking from safety valve outlet Water system is operating above design pressure. Safety valve is damaged.
DIAGNOSTIC CODES Whenever a failure occurs, an alert sounds and a diagnostic code is displayed to indicate the failure mode at the time of occurrence. The following table includes a list of diagnostic codes that can be displayed as well as recommended remedies to address the problem. Figure 5 Control Panel Example Displaying Freer Code B2 Code Indication Solution Blower system problem occurred. 1. The blower jammed or stopped 1. Check to see if fan turns freely.
Code Indication Solution Flame detection error. 1. The detection circuitry for ignition 1. Connect the relevant circuit properly and flame detection has come loose or | and eliminate the bad connection. failed to connect. Replace any failed circuit elements. 2. Ignition sequence was unsuccessful. 2. Check fuel gas supply. Check if the fuel gas pressure is too high or too low. 3. 3. An accidental flame out occurred. 3. Check if the fuel gas pressure and water pressure are normal.
Overheating occurred 1. Overheating occurred. Possible causes include operating at a very high load for a long period and then there is a sudden event such as 1. Normal system function. This should be a very infrequent event. Correct gas or water supply issues if there are frequent re occurrence. E5 excessively low pressure in water supply or excessively high gas supply pressure. 2. Replace the fusible protection wire. 2.
INSTALLATION INSTALLATION GUIDELINES Only properly qualified personnel should install this equipment. Improper installation or installation by a non-qualified installer may void warranty. Failure to comply with state and local codes pertaining to water heater installations may void also warranty. Mara Heater Corp. water heaters are suitable for installation as a single stand-alone unit or in installations involving combinations of multiple units (i.e. parallel or series}.
PACKING LIST (NEED PACKING LIST AND DRAWINGS OF COMPONENTS) The following contents are included. If any items are missing contact China best Home Appliance toll free support line: 1-800-295-8039.
LOCATION AND CLEARANCE REQUIREMENTS ed iE aes Rosiness i Befriend CLEARANCE REQUIRED TYPICAL INSTALLATION ig hid LOCATION Choose a location for unit installation taking into account the following guidelines. » Unit must be installed indoors. Installation is not recommended in bathrooms, bedrooms or occupied rooms that are normally kept closed. + Unit should have proper clearance as indicated below including ample clearance in front of unit for proper service access.
CLEARANCE REQUIREMENTS ADJACENT MATERIAL COMPOSITION NON-COMBUSTIBLE COMBUSTIBLE SIDE inches 50 mm inches 150mm TOP inches 50 mm 12 inches 300 mm FLOOR 12 inches 300 mm 12 inches 300mm FRONT 24 inches 600 mm 24 inches 600 mm FRONT zero zero 1 inch (25 mm) fireproof insulating panel required MOUNTING The heater MUST be installed in a vertical position with fuel gas inlet at the bottom and exhaust vent positioned at the top. Installation in any other orientation will result in damage and will void warranty.
{figure 1) ELECTRICAL Ensure compliance with applicable electrical codes during installation including the U.S. National Electric Code (PAN 70) or the Canadian Electrical Code — Part 1 (GAS C22.1) depending on location. 1. Ensure that a properly grounded 120 V/ 60 Hz three prong outlet is available. 2. DO NOT PLUG IN THE UNIT UNTIL INSTALLATION IS COMPLETE, TESTED, AND READY FOR INITIAL START UP.
GAS PIPING Gas piping should be sized, installed, and tested only by a licensed professional! Improper installation can result in improper equipment performance or a hazardous situation. 1. Check the fuel gas type before installation. DO NOT connect a unit if the gas type is not compatible. Contact your dealer for the proper unit to match the gas type. 2. Check the gas inlet pressure immediately upstream at a location provided by the gas company.
WATER PIPING 1. All piping, including soldering material, and components connected to this heater shall be approved for use in potable water systems. 2. If the heater has ever been previously used for heating non-potable water, never install the heater later into a potable water system. 3, The installation of manual shutoff valves, drain valves and unions are recommended. A professional should review each installation and ensure adequate ability to isolate, drain, and disconnect heater for service needs.
AIR INTAKE AND EXHAUST (VENT) SYSTEM Improper venting of a water heater can result in excessive levels of DANGER [sii e Carbon Monoxide which can result in severe injury or death! This water heater must be vented in accordance with the “Venting of Equipment” section of ANSI 2223.1 / PAN 54 National Fuel Gas Code — latest versions, or in Canada, the most recent version of CANCAN B149.1 Natural Gas and Propane Installation Code.
* Ensure the air intake and vent termination points are at least above any possible snow accumulation level. The flows must not be impeded by snow or debris. * Ensure the air intake and vent termination points are at least fro many obstruction or other objects. The exhaust pipe must maintain adequate clearances and be insulated with a fireproof material if it passes through walls made of flammable materials.
EXHAUST VENT PIPE ASSEMBLY (please review — this is template} 1. Use manufacturer's universal adapter to connect the vent pipe to the unit. 2. Follow the manufacturer's vent pipe assembly guidelines and sample diagrams below. 3.
L= Clearance above paved sidewalk or paved driveway lactated on public property ** M= Clearance under veranda, porch, deck, or balcony For clearances not specified in ANSI 54 or CSA B149.1, one of the following shall be indicated: A) a minimum clearance value determined by testing in accordance with Clause 5.21, Draft hoods; or B) a reference to the following footnote: “Clearance in accordance with local installation codes and the requirements of the gas supplier.
TERMINATION DETAILS 1. ‘Determine the number of elbows of 90 degrees that will be used in the evacuation system {two elbows of 45 degrees being considered as a single elbow of 90 degrees) 2, Refer to the table below to determine the maximum length in function of the number of elbows. For example: If you have only ons elbow, the maximum length will be 21:ft Number of elbows 27ft (8.2m) 21st (6.4m) 15ft (4.5m) 9ft (2.
Horizontal Terminations Tre aur intake must be incarnated in season 10 the exhaust as shown below. The air intake must angle 144 inch per foot in (he location to prevent expiry nfl Optional 4 Pie od a INTAKE DT intake must be in the same pressure Tons and face the same digestion.
START UP AND TESTING WARNING: If the information in these instructions is not followed exact tly, a fire or explosion may result causing property damage, personal injury or death. 4A DANGER * Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. YOU SMELL GAS: Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor’s phone.
INITIAL START UP 1. STOP! Read the safety information from the previous page. 2. Ensure unit is unplugged and all electric power to the appliance is off. 3. Locate the manual gas valve to the heater. Open the manual gas valve for 15-30 seconds. 4, Turn the manual valve clockwise to the full OFF position. 5. Carefully check for any sign or smell of gas. If gas is detected, wait five (5) minutes for it to clear. STOP and go no further until gas leak point is detected. 6.
Relief valve install For safe operation of the water heater, be sure that: » The pressure rating of the relief valve must not exceed 116 psi, the maximum working pressure of the water heater as marked on the rating plate. + The BTU rating of the relief valve must equal or exceed the BTU input of the water heater as marked on its rating plate. * No valve of any type should be installed between the relief valve and the water heater.
SYSTEM SPECIFICATION Model No GALLIC Type of Appliance Temp. controlled continuous Flow Gas Hot Water Unit Operation With/without remote controls, mounted in Kitchen, bathroom, etc. Flue System Room Sealed-Forced Fraught Flue Available default Temperatures Actor setting 107°F Rated gas Nature gas 7-inch W.C. (1740 Pa} pressure Propane (LPG) 11-inch W.C.
Limited Warranty Register unit at: General The manufacturer warrants this water heater and its components to be free from defects in material and workmanship according to the terms herein. For full warranty details visit Exclusion THIS LIMITED WARRANTY SHALL BE THE EXCLUSIVE WARRANTY MADE BY THE MANUFACTURER AND IS MADE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED {WHETHER WRITTEN OR ORAL}, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
