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HIGH EFFICIENCY AHCG3/HCG360T120 thru AHCG3/HCG3100T250
COMMERCIAL GAS WATER HEATER
GAS-FIRED POWER BURNER
FOR DOMESTIC HOT WATER
• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
– Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
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HIGH EFFICIENCY AHCG3/HCG360T120 thru AHCG3/HCG3100T250 ROUGH-IN-DIMENSIONS GAS VALVE PIPING AHCG3/HCG360T120 1/2" NPT AHCG3/HCG3100T150 thru 100T250 3/4" NPT Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P. Approx. TEMPERATURE RISE - DEGREES °F - GALLONS PER HOUR AHCG3/ Input Gas Gallon HCG3 BTU/Hr. Usage Capacity 30 40 50 60 70 80 90 100 110 120 130 140 60T120 120,000 nat/lp 60 461 345 276 230 197 173 154 138 126 115 106 99 100T150 150,000 nat
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TABLE OF CONTENTS PAGE PAGE ROUGH-IN DIMENSIONS ................................................................. 2 Gas Valves .................................................................................... 15 FOREWORD .....................................................................................
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temperature be set for the lowest temperature which satisfies your hot water DISHWASHING MACHINE REQUIREMENT needs. This will also provide the most energy efficient operation of the water heater and minimize scale formation. All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water flow pressures between SETTING THE WATER HEATER TEMPERATURE AT 120°F/49°C WILL 15 and 25 pounds per square inch (103 Kpa and 173 Kpa). Flow pressures RE
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LOCATING THE HEATER WARNING THIS WATER HEATER IS A CONDENSING UNIT AND REQUIRES A DRAIN WARNING THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH AS TO BE LOCATED IN CLOSE PROXIMITY TO ALLOW THE CONDENSATE GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER AREAS TO DRAIN SAFELY. THE CONDENSATE DRAINS FROM THE UNIT AT WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE THE EXHAUST ELBOW LOCATED AT THE BOTTOM OF THE UNIT. NOTE: DRIVEN EQUIPMENT OR VEHICLES ARE STORED, OPERATED OR IT IS IMPORTAN
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If the confined space is within a building of tight construction, air for combustion HARD WATER and ventilation must be obtained from outdoors. When directly communicating with the outdoors through vertical ducts, two permanent openings, located Where hard water conditions exist, water softening or the threshold type of in the above manner, shall be provided. Each opening shall have a free water treatment is recommended. This will protect the dishwashers, coffee area of not less than one
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INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to
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U.S. POWER VENT FIGURE 5a. CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN POWER VENT FIGURE 5b. 8
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U.S. DIRECT VENT FIGURE 6a. CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN DIRECT VENT FIGURE 6b. 9
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IMPORTANT FOR ALL MODELS The vent system must terminate so that proper clearances are maintained as cited in local codes or the current editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CAN/CSA-B149.1. Do not terminate the exhaust vent terminal over public area where condensate or vapor can cause nuisance or hazard. Plan the vent system layout so that proper clearances are maintained from plumbing and wiring. Vent pipes serving po
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5. Glue the intake vent terminal to the section of the pipe. VERTICAL VENT TERMINAL INSTALLATION 6. Slide the wall plate over the pipe to stop against intake vent terminal. IMPORTANT 7. Place a bead of caulking (not supplied) around the gap between the pipe WHEN TERMINATING THROUGH A ROOF, THE FOLLOWING and the wall. Place some of the caulking on the back of the plate to hold SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE it against the wall after installation. FOLLOWED. 8. If the
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Propane Installation Code which requires the vent system components INSTALLATION OF VENT SYSTEM be certified to ULC S636. WARNING This water heater has been design certified to be vented with PVC pipe THE OPTIONAL INTAKE VENTING ARRANGEMENT AND THE EXHAUST certified and marked as complying with ULC S636. This water heater is VENTING ARRANGEMENT MUST BE INSTALLED TO RUN DIRECTLY TO supplied with a 2 inch 22.5 degree termination elbow that is a special fitting THE OUTDOORS AND NOT IN ANY WA
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CEMENT LOW GAS PRESSURE SWITCH The cement should be a bodied cement of approximately 500 to 1600 (SEE FIGURE 12) centipoise viscosity containing 10-20% (by weight) virgin PVC material The Low Gas Switch (LGS) is a single-pole, normally open pressure switch solvated with tetrahydrofuran (THF). Small quantities of dimethyl formamide that will close its contacts when a rising pressure of 5.0 in. (1.25Kpa) W.C. (DMF) may be included to act as a retarding agent to extend curing time. is encou
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WARNING THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER THAN 10.5" (2.59 KPa) WATER COLUMN SUPPLY GAS PRESSURE. HIGHER GAS SUPPLY PRESSURES REQUIRE SUPPLEMENTAL REDUCING SERVICE REGULATION. EXPOSURE TO HIGHER GAS SUPPLY PRESSURE MAY CAUSE DAMAGE TO THE GAS CONTROLS WHICH COULD RESULT IN FIRE OR EXPLOSION. IF OVERPRESSURE HAS OCCURRED SUCH AS THROUGH IMPROPER TESTING OF GAS LINES OR EMERGENCY MALFUNCTION OF THE SUPPLY SYSTEM THE GAS VALVE MUST BE CHECKED FOR SAFE OPERATION. MAKE SURE
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DISCONNECT THE APPLIANCE AND ITS MANUAL GAS SHUTOFF RELIEF VALVE VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1/2 PSIG (3.45Kpa). GAS This heater is equipped with an approved temperature and pressure relief SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM THE valve. ASME ratings cover pressure relief. CSA ratings cover release rate HEATER. FOR TEST PRESSURES OF 1/2 PSIG (3.45Kpa) OR LESS, THE with temperature actuation. APPLIANCE NEED NOT BE DISCON
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3. This unit may never be connected to any existing heating system or CONDITIONER MUST BE INSTALLED IF THE ABOVE CONDITIONS EXIST. MALFUNCTIONS CAUSED BY A POOR ELECTRICAL SUPPLY ARE NOT component(s) previously used with non-potable water heating COVERED UNDER YOUR WARRANTY. appliance. The controller is wired to the heater as shown in Figure 15. The model and 4. When the system requires water for space heating at temperatures higher rating plate provides the electrical information need
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USING THE ELECTRONIC CONTROLLER 1. Overview Interaction with the water heater controller is done through an up, a down, and three operation buttons. These buttons are illustrated to the right. Operation of the three lower buttons is defined immediately above them on the screen. The [UP] and [DN] buttons are used to navigate through the menus and make adjustments to the water heater. While the water heater is operating, the user interface will display the desktop screen (if there are no activ
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2. Operating States In the main desktop screen, there are some specific Operating States that are indicated on the status line. These are summarized below: ACTION: 3. Adjusting the Operating Set Point Press Change then use the UP and DOWN buttons to change the Set The Operating Set Point of this water heater determines the regulated Point. temperature for the water in the tank. This parameter is adjusted in the Temperature menu. Items in this menu allow you to monitor different tem- perature
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There are two types of conditions that can occur during operation. These 4. Changing the Display Units are Warnings and Faults: The display interface to the heater has the option of selecting between de- grees Fahrenheit and degrees Celsius for temperature displays. This can be • Warnings: This is a non-safety related condition that the control has found in the “Display Settings” menu. Also in this menu, you may adjust how detected that may cause the water heater to operate in a less than
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ACTION: 7. Viewing the Fault History To get to the current fault information screen, press Menu. The controller for this water heater will store a history of ten of the last Fault and Warning conditions that occurred. This is stored in the Fault History. DISPLAY: Along with all the information about the fault, including a estimate time of when the fault occurred, information regarding the advanced diagnostics for that fault can be accessed at any time. ACTION: Press the DOWN button f
