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Rooftop Water Heater Model SRT80 120NE
COMMERCIAL GAS WATER HEATER
GAS-FIRED POWER BURNER
FOR DOMESTIC HOT WATER
• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY
Thank you for buying this energy efficient water heater from
State Industries. We appreciate your confidence in our
products.
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 s
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ROOFTOP SRT80-120NE ROUGH-IN-DIMENSIONS TOP VIEW RIGHT SIDE VIEW LEFT SIDE VIEW FRONT VIEW GAS VALVE PIPING SRT80-120 1/2" NPT Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P. Approx. TEMPERATURE RISE - DEGREES °F - GALLONS PER HOUR (LPH) BTU Gallon Model Input Capacity 30 40 50 60 70 80 90 100 110 120 130 140 SRT80-120 120,000 80 388 291 233 194 166 145 129 116 106 97 90 83 35.17 kwh 303L (1469) (1102) (882) (734) (628) (549) (488) (439) (401) (367) (341) (314) Recovery capacities are based o
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INSTALLATION INFORMATION OUTBACK Installation Information Model: SRT80-120NE series Input: 120,000 btuh Electrical: 120/24VAC/60 Hz/5 A Side Clearances: 0" Maximum Inlet Pressure: 14"WC Top Clearances: 1.50" Manifold Pressure: 4.50"WC Unit is Polarity Sensitive Minimum Inlet Pressure: 6.2"WC No external venting required Warnings Dummy hot return required if hot return from appliance is not used* Avoid flex gas line usage Avoid use of forklift truck to mount unit on outdoor stand Provide en
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FOREWORD This design complies with the current edition of ANSI Z21.10.3 as In addition to these instructions, the equipment shall be an automatic circulating tank type water heater and automatic installed in accordance with all local codes. The authority storage water heater. having jurisdiction should be consulted before installing. Detailed installation diagrams are found in this manual. These In the absence of local codes, the installation must comply diagrams will serve to provide the insta
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Figure 1 shows the approximate time-to-burn relationship for FEATURES normal adult skin. Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to IMPORTANT exceed the thermostat setting by up to 20°F/-11°C. If you experience this type of use, you should consider using lower temperature IT IS REQUIRED THAT A QUALIFIED SERVICE TECHNICIAN settings to reduce scald hazards. PERFORM THE INITIAL FIRING OF THE HEATER. A CHECKLIST AND SERVICE INFORMATION
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HIGH LIMIT SWITCH (E.C.O.) The top immersion well of the upper probe also contains the high limit (energy cutoff) sensor. The high limit switch interrupts the main burner gas flow should the water temperature reach approximately 199°F/93°C. Should the high limit switch activate, it must be reset by cycling power to the unit. The water temperature must drop below 180°F/ 82°C before the controller can be reset. Continued manual resetting of the high limit control, preceded by higher than usual wa
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HOT RETURN RECIRCULATION PUMP BLOWER ASSEMBLY The hot return recirculation pump circulates the hot water through The blower assembly functions by pulling in air from outside the the hot water line to eliminate delays at plumbing fixtures, see unit to supply to the burner assembly for proper combustion. The Figure 5. blower pushes the air through the burner assembly and heat exchanger where the flue gases then exit the exhaust system assembly, see Figure 8. FIGURE 5 DRAIN VALVE The drain valv
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AIR HOSE CONTROL SYSTEM The air hose is used to provide a flexible air path from the blower The control system is comprised of an Outdoor Interface Module to the burner assembly. It is held in place with two standard hose that monitors the functions of the WR ignition system, pressure clamps, see Figure 10. switches, low water cutoff and temperatures in the tank. FIGURE 10 FLUE ADAPTER The flue adapter is made of a flat metal plate with an exhaust adapter to mate with the exhaust elbow. This i
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LOW GAS PRESSURE SWITCH OIM - OUTDOOR INTERFACE MODULE The OIM is a device that monitors the control system. It monitors The Low Gas Pressure Switch is a single pole, normally open the ignition control assembly, the tank and outlet temperatures, pressure switch that will close its contacts when a rising pressure the low water cutoff device, and the pressure switches. The display of 6.2 inches (1.53 kPa) w.c. is encountered. The contacts will board provides operating information. It records an
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grounding screw to tie into the metal panel to assure the unit is LOW WATER CUTOFF BOARD AND PROBE grounded, see Figure 23. The Low Water Cutoff Board and Probe monitors the water level to confirm the tank is completely full. This function is very important when the unit is first filled with water and when complete loss of power is encountered during freezing temperatures (in case the unit drains while using the anti-freeze kit), see Figure 20. FIGURE 23 TANK ASSEMBLY SYSTEM The Tank Assembly i
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FLAME SENSOR CABINET ASSEMBLY The flame sensor is used to sense the burner flame. When there CABINET PANELS is sufficient flame, and the burner is properly grounded, the flame sensor signals back to the ignition board that the burner is operating There are five panels that comprise the cabinet assembly. The properly and to maintain the operation of the gas valve until the ends of the cabinet allow access to all controls and plumbing. thermostat is satisfied. Please confirm all joints are attac
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FIGURE 29 WARNING the unit full of water. (Full weight of approximately 1300 lbs. Add FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY extra load and safety factors.) This is very important and the user's responsibility, see Figure 29. If you are uncertain as to the load OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST NEVER bearing capability of the roof, consult a licensed structural BE PLACED ON OR ADJACENT TO THE HEATER. OPEN CONTAINERS OF FLAMMABLE MATERIAL SHOULD NOT BE engineering expert. S
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FIGURE 30 Be sure that unit is installed such that snow will not block the RIG AND PLACE UNIT combustion intake or flue outlet. Inspect unit for transportation damage. File any claim with Unit may be installed directly on wood flooring or on Class A, B, or transportation agency. Keep unit upright and do not drop. Spreader C roof covering material when roof curb is used. bars are not required if top crating is left on unit. Rollers may be used to move unit across the roof. Level the unit by
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OUTDOOR STAND WARNING DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER This rooftop water heater is approved for an outdoor installation WATER. IMMEDIATELY CONTACT A QUALIFIED INSTALLER OR with an optional stand. Contact State Order Entry to acquire SERVICE AGENCY TO REPLACE A FLOODED WATER HEATER. optional stand kit. DO NOT ATTEMPT TO REPAIR THE UNIT ! IT MUST BE REPLACED! The rooftop stand is constructed of a tubular steel frame along CLEARANCES with tubular steel legs. See Figure 32.
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The vent shall terminate a minimum of 12" (30.5 cm) above expected VENTING snowfall level to prevent blockage of vent termination. WARNING WARNING THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST USE ONLY THE VENT TERMINALS SUPPLIED WITH THIS UNIT. BE FOLLOWED TO AVOID CHOKED COMBUSTION OR TERMINATION OF A VENT SYSTEM WITH A DEVICE OTHER RECIRCULATION OF FLUE GASES. SUCH CONDITIONS CAUSE THAN THE SUPPLIED VENT TERMINATIONS WILL AFFECT SOOTING OR RISKS OF FIRE AND ASPHYXIATION. SYSTEM PERFORMA
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WARNING Apply joint compounds (pipe dope) sparingly and only to the male threads of pipe joints. Do not apply compound to the first two THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER threads. Use compounds resistant to the action of liquefied THAN 14.0" WATER COLUMN (1/2 POUND OR 3.45 kPa PER petroleum gases. SQUARE INCH) SUPPLY GAS PRESSURE. HIGHER GAS SUPPLY PRESSURES REQUIRE SUPPLEMENTAL REDUCING SERVICE REGULATION. EXPOSURE TO HIGHER GAS SUPPLY PRESSURE DISCONNECT THE APPLIANCE AND ITS
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Thermometers are installed in the system as a means of detecting bypass) is installed in the cold water line between the water heater the temperature of the outlet water supply. and street main (or well). RELIEF VALVE Excessive pressure may develop causing premature tank failure or intermittent relief valve operation. This type of failure is not This heater is equipped with an approved temperature and covered by the limited warranty. An expansion tank or a similar pressure relief valve. ASME rat
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18 FIGURE 36
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OPERATION MENU NAVIGATION The EMC-5000 Interface has 5 buttons on the touch panel of the interface. The EMC-5000's menus are navigated through the touch panel, as shown to the right, which can be found on the outdoor and remote interface box. Basic navigation through the menus begins with the Main Menu. With the exception of changing a user set point, touching {menu} will bring you to the Main Menu, as is illustrated here: > Temperatures System Status From the Main Menu, you can use the [up]
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Menu Tree Main Menu Description Temperatures Outlet Displays the temperature of the outlet tank probe. Tank Displays the temperature of the probe located in the tank. System Status LWCO Low Water Cut-Off status. The status can be either Closed or Open. A Closed status indicates that there is not a low water condition in the tank. An Open status indicates that there is a low water condition in the tank. ECO Emergency Cut-Off status. The status can be either Closed or Open. A Closed status i
