Instruction/ maintenance manual of the product ROOFTOP SRT80 120NE State Water Heaters
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1 500 T ennessee W altz P ar kwa y Ashland City , TN 37015 www.statewaterheaters.com PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
2 ROOFT OP S RT80- 1 20NE RO UGH - IN-DIMENS IONS GAS V A L VE PIPING SR T80 - 1 20 1/2" NPT Recovery capacities are based on heater performance at 80% thermal ef ficiency .
3 INST ALLA TION INFORMA TION Installation Information Model: SR T80 - 1 20NE series Input: 120,000 btuh Electrical: 120/24V AC/60 Hz/5 A Side Clearances: 0" Maximum Inlet Pressure: 14"WC T op Clearances: 1.50" Manifold Pressure: 4.50"WC Unit is Polarity Sensitive Minimum Inlet Pressure: 6.
4 This design complies with the current edition of ANSI Z21.10.3 as an automatic circulating tank type water heater and automatic storage water heater . Detailed installation diagrams are found in this manual. These diagrams will serve to provide the installer with a reference for the materials and methods of piping necessary .
5 Figure 1 shows the approximate time-to-burn relationship for normal adult skin. Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the thermostat setting by up to 20°F/-1 1°C.
6 HIGH LIMIT SWITCH (E.C.O.) The top immersion well of the upper probe also contains the high limit (energy cutof f) 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.
7 BLOW E R ASSEMBL Y The blower assembly functions by pulling in air from outside the unit to supply to the burner assembly for proper combustion. The blower pushes the air through the burner assembly and heat exchanger where the flue gases then exit the exhaust system assembly , see Figure 8.
8 AIR HOSE The air hose is used to provide a flexible air path from the blower to the burner assembly . It is held in place with two st andard hose clamps, see Figure 10. FIGURE 10 FLUE ADAPTER The flue adapter is made of a flat metal plate with an exhaust adapter to mate with the exhaust elbow .
9 LOW GAS PRESSURE SWITCH The Low Gas Pressure Switch is a single pole, normally open pressure switch that will close its contacts when a rising pressure of 6.2 inches (1.53 kPa) w .c. is encountered. The contact s will open when the pressure falls below the fixed set point of 6.
10 grounding screw to tie into the metal panel to assure the unit is grounded, see Figure 23. FIGURE 23 T ANK ASSEMBL Y SYSTEM The T ank Assembly is an 80 gallon unit with a U-shaped heat exchanger . It incorporates two inlet tubes to control flow inside the tank.
11 CABINET ASSEMBL Y CABINET P ANELS There are five panels that comprise the cabinet assembly . The ends of the cabinet allow access to all controls and plumbing. Please confirm all joints are attached correctly and sealed to prevent water leakage inside the cabinet, see Figure 26.
12 W ARNING FLAMMABLE ITEMS, PRESSURIZED CONT AINERS OR ANY OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST NEVER BE PLACED ON OR ADJACENT TO THE HEA TER. OPEN CONT AINERS OF FLAMMABLE MA TERIAL SHOULD NOT BE STORED OR USED IN THE SAME ROOM WITH THE HEA TER.
13 RIG AND PLACE UNIT Inspect unit for transportation damage. File any claim with transportation agency . Keep unit upright and do not drop. S preader bars are not required if top crating is left on unit. Rollers may be used to move unit across the roof.
14 OUTDOOR ST AND This rooftop water heater is approved for an outdoor installation with an optional stand. Cont act S tate Order Entry to acquire optional stand kit. The rooftop stand is constructed of a tubular steel frame along with tubular steel legs.
15 VENTING WARNING THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST BE FOLLOWED T O A VOID CHOKED COMBUSTION OR RECIRCULA TION OF FLUE GASES. SUCH CONDITIONS CAUSE SOOTING OR RISKS OF FIRE AND ASPHYXIATION.
16 W ARNING THE HEA TER IS NOT INTENDED FOR OPERA TION A T HIGHER THAN 14.0" W A TER COLUMN (1/2 POUND OR 3.45 kPa PER SQUARE INCH) SUPPL Y GAS PRESSURE.
17 Thermometers are installed in the system as a means of detecting the temperature of the outlet water supply . RELIEF V AL VE This heater is equipped with an approved temperature and pressure relief valve. ASME ratings cover pressure relief. CSA ratings cover release rate with temperature actuation.
18 FIGURE 36.
19 OPERA TION MENU NA VIGA TION 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.
20 Menu T ree Main Menu Description T emperatures Outlet Displays the temperature of the outlet tank probe. T a nk Displays the temperature of the probe located in the tank. System Status L WCO Low W ater Cut-Of f status. The st atus can be either Closed or Open .
21 SEQUENCE OF OPERA TION 1. When the control is powered up the outdoor interface and the remote interface should display a blank line and copyright on the 2-line display . 2. After one second, the display should switch to indicate that the touch switches are calibrating.
22 The following are fault conditions related to the ignition module: Fault: I.M. LOCK OUT I.M Failed an internal hardware or software check Possible Cause Remedy 1. Ignition Module Failure 1. Replace Ignition Module Fault: I.M. PS CLOSED The pressure switch is stuck closed Possible Cause Remedy 1.
23 OPERA TING INSTRUCTIONS IMPORT ANT IT IS RECOMMENDED THA T A QUALIFIED SERVICE TECHNICIAN PERFORM THE INITIAL FIRING OF THE HEA TER. A T THIS TIME THE USER SHOULD ASK THE TECHNICIAN ANY QUESTIONS IN REGARD TO THE OPERA TION AND MAINTENANCE OF THE UNIT .
24 e. Repeat steps (c) and (d) until the specified input rate is achieved. f . Turn the manual gas valve to “OFF”. Replace the pressure regulator cover screw . Remove the pressure gauge or manometer from the manifold pressure tap. Replace the set screw in the manifold pressure tap.
25 W ARNING : IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTL Y , A FIRE OR EXPLOSION MA Y RESUL T CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. FOR YOUR SAFETY READ BEFORE OPERA TING C. Use only your hand to push in or turn the gas control knob.
26 GENERAL INFORMA TION POWER BURNER The SEQUENCE OF OPERA TION is provided on page 21 and the INITIAL ST ART-UP procedure of the unit on page 23. HIGH LIMIT The high limit switch (not adjustable) is factory set to cutout at 199°F (93°C).
27 Sediment and lime scale removal may be accomplished through the cleanout opening furnished on the heater . The heater must be drained, see DRAINING , before removing cleanout cover on tank. T o dissolve and remove the more stubborn mineral deposits, SRT80-1 20NE UN•LIME® Professional Delimer should be used.
28 ONE TEMPERA TURE - ONE HEA TER HORIZONT AL ST ORAGE T ANK FORCED CIRCULA TION WITH OR WITHOUT BUILDING RECIRCULA TION DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES.
29 DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL WARNING ON P AGE 5. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSARY TO OBTAIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT WA TER SUPPLIED TO FIXTURE S.
30 TWO TEMPERA TURE - TWO HEA TERS HIGH TEMPERA TURE WITH OR WITHOUT BUILDING RECIRCULA TION TWO TEMPERA TURE - THREE HEA TERS (TWO PRE-HEA TERS/ONE BOOSTER HEA TER) WITH OR WITHOUT BUILDING RECIRCULA TION FOR MUL TIPLE HEA TER INST ALLA TION SEE MANIFOLD KIT SPECIFICA TIONS.
31 * PIPE RELIEF V AL VE TO OPEN DRAIN * * 140°F (60°C)TO 150°F (66°C) SHOULD BE MAXIMUM WA TER TEMPERA TURE MAINT AINED IN THE PRE-HEA TERS. 120°F (49°C) SHOULD BE THE MINIMUM TEMPERA TURE OF W A TER IN THE PRE-HEATERS. CONNECT CIRCULA TING LINE FROM FIXTURES, IF USED, T O COLD W A TER SUPPL Y LINE OF PRE-HEA TER.
32 NOTE 1: T OGGLE SWITCH CONTROLS 180°F (82°C) WA TER CIRCULA TION. INST ALL ON OR CLOSE T O DISHWASHER. TOGGLE SWITCH MUST BE CLOSED (ON) DURING THE RINSE OPERA TION AND OPEN (OFF) WHEN DISHW ASHER IS NOT OPERA TING OR WHEN ON LONG ST ANDBY .
33 CHECKLIST AND SERVICE INFORMA TION IMPORT ANT The installer may be able to observe and correct certain problems which might arise when the unit is put into operation or when it is re-fired after a prolonged shutdown. HOWEVER, it is recommended that only qualified servicemen, using appropriate test equipment, be allowed to service the heater .
34 NOTE: ANY BYP ASS OR AL TERA TION OF THE UNITS SAFETIES WILL RESUL T IN VOIDING THE APPLIANCE W ARRANTY . Before performing any troubleshooting familiarize yourself with the particular appliance. Refer to the SEQUENCE OF OPERA TION on page 21 before continuing.
35 MODEL SRT80 120NE LIMITED W ARRANTY S tate W ater Heaters, the warrantor , extends the following LIMITED W ARRANTY to the owner of this water heater .
36 500 TENNESSEE W AL TZ PARKW A Y ASHLAND CITY , TN 37015 Phone: 800-821-2017 Fax: 800-644-9306 www.statewaterheaters.com.
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