State Water Heaters ROOFTOP SRT80 120NE Installation & Operation Instruction Download Page 15

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VENTING

WARNING

THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST
BE FOLLOWED TO AVOID CHOKED COMBUSTION OR
RECIRCULATION OF FLUE GASES. SUCH CONDITIONS CAUSE
SOOTING OR RISKS OF FIRE AND ASPHYXIATION.

WARNING

NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO
THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID
RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR
ASPHYXIATION.

CAUTION

DO NOT TERMINATE THE VENTING WHERE NOISE FROM THE
EXHAUST OR INTAKE WILL BE OBJECTIONABLE. THIS
INCLUDES LOCATIONS CLOSE TO OR ACROSS FROM WINDOWS
AND DOORS.

FIGURE 33

VENT TERMINALS

The vent system must terminate so that proper clearances are
maintained as cited in local codes or the current edition of the
National Fuel Gas Code, ANSI Z223.1/NFPA 54.

The SRT80-120NE series is designed with an internal vent
construction. The exhaust vent terminal and the inlet air terminal
are located on the sides of the appliance. Do not add vent pipe to
the appliance, see Figure 33.

Assure the exhaust vent terminal is not in a public area where the
hoods are exposed. The exhaust vent terminal gets very

HOT

during operation and can cause burns. Please use caution when
working around the exhaust vent terminal.

It is imperative that the area around the vent terminal hoods are
kept clear from obstructions so plenty of fresh air is available for
combustion.

The vent shall terminate a minimum of 12" (30.5 cm) above expected
snowfall level to prevent blockage of vent termination.

WARNING

USE ONLY THE VENT TERMINALS SUPPLIED WITH THIS UNIT.
TERMINATION OF A VENT SYSTEM WITH A DEVICE OTHER
THAN THE SUPPLIED VENT TERMINATIONS WILL AFFECT
SYSTEM PERFORMANCE AND RESULT IN A SAFETY HAZARD.

PRESSURE SWITCHES

The SRT80-120NE is provided with three pressure switches.
These switches are essential to the safe and proper operation of
the unit. All switches are wired in series. The controller is set up to
shut the unit down whenever there is a failure of any of the switches.

CAUTION

THE WATER HEATER IS POLARITY SENSITIVE. BEFORE
APPLYING ELECTRICITY TO THIS HEATER BE CERTAIN THAT
SUPPLY NEUTRAL WIRE TO GROUND CHECK INDICATES ZERO
VOLTAGE.

GAS PIPING

Contact your local gas service company to ensure that adequate
gas service is available and to review applicable installation codes
for your area.

TABLE 3

MAXIMUM CAPACITY OF PIPE IN CUBIC FEET OF GAS PER HOUR

(Based upon a Pressure Drop of 0.5 inch Water Column

and 0.6 Specific Gravity Gas

Size the main gas line in accordance with Table 3. The figures
shown are for straight lengths of pipe at 0.5 in. (125 kPa) W.C.
pressure drop, which is considered normal for low pressure
systems. Note that fittings such as elbows and tees will add to the
pipe pressure drop.

CAUTION

DO NOT USE FLEXIBLE GAS PIPING.

LENGTH

NORMAL IRON PIPE SIZES (INCHES)

INPUT IN THOUSANDS BTU/HR

FEET

1/2"

3/4"

1 1/4" 1 1/2"

2 1/2"

175

360

680

1400

2100

3960

6300

11000 23000

120

250

485

950

1460

2750

4360

7700

15800

—

200

375

770

1180

2200

3520

6250

12800

—

170

320

660

990

1900

3000

5300

10900

—

151

285

580

900

1680

2650

4750

9700

—

138

260

530

810

1520

2400

4300

8800

—

125

240

490

750

1400

2250

3900

8100

—

220

460

690

1300

2050

3700

7500

—

205

430

650

1220

1950

3450

7200

100

—

195

400

620

1150

1850

3250

6700

125

—

175

360

550

1020

1650

2950

6000

150

—

160

325

500

950

1500

2650

5500

175

—

145

300

460

850

1370

2450

5000

200

—

135

280

430

800

1280

2280

4600

LENGTH

NORMAL IRON PIPE SIZES (INCHES)

INPUT IN KW

METERS

1/2"

3/4"

1 1/4" 1 1/2"

2 1/2"

3.0

105

199

410

615

1160

1845

3221

6735

6.1

142

278

428

805

1277

2255

4626

9.1

—

110

225

346

644

1031

1830

3748

12.2

—

193

290

556

878

1552

3192

15.2

—

170

264

492

776

1391

2840

18.3

—

155

237

445

703

1259

2577

21.3

—

143

220

410

659

1142

2372

24.4

—

135

202

381

600

1083

2196

27.4

—

126

190

357

571

1010

2108

30.5

—

117

182

337

542

952

1962

38.1

—

105

161

299

483

864

1757

45.7

—

146

278

439

776

1610

53.3

—

135

249

401

717

1464

61.0

—

126

234

375

688

1347

Summary of Contents for ROOFTOP SRT80 120NE

Page 1: ...ying 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 store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL G...

Page 2: ...cy Table 1 RECOVERY CAPACITIES NATURAL GAS L P Approx 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 TEMPERATURE RISE DEGREES F GALLONS PER HOUR LPH FRONTVIEW TOPVIEW LEFTSIDEVIEW RIGHTSIDEVIEW ...

Page 3: ...ances 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 enough clearance to service unit Available Kits Anti freeze kit Remote Interface kit OUTBACK ...

Page 4: ...Exhaust Vent 8 CONTROLSYSTEM 8 Blocked Outlet Switch 8 Blocked Inlet Prover Switch 8 Low Gas Pressure Switch 9 On Off Switch 9 Hot Surface Igniter 9 OIM Outdoor Interface Module 9 WR Ignition Control Board 9 Low Water Cutoff Board and Probe 10 Thermostat E C O Probes 10 Transformer 10 Junction Box 10 TANKASSEMBLY SYSTEM 10 Tank Insulation 10 CABINETASSEMBLY 11 Cabinet Panels 11 ADDITIONAL CONTROLS...

Page 5: ...THERMOSTAT TO CONTROL WATER TEMPERATURE HOT WATER TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE SCALD BURNS RESULTING IN SERIOUS PERSONAL INJURY AND OR DEATH THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON S AGE AND TIME OF EXPOSURE THE SLOWER RESPONSE TIME OF CHILDREN THE ELDERLY OR DISABLED PERSONS INCREASESTHE HAZARDS TO THEM NEVERALLOW SMALL CHILDREN TO...

Page 6: ...he circulation should be very gentle so that it does not cause any unnecessary turbulence inside the water heater The circulation should be just enough to provide 180 F 82 C water at the point of take off to the dishwashing machine Adjust flow by means of the plug cock in the circulating line See INSTALLATION DIAGRAMS section CIRCULATING PUMP A circulating pump is used when a system requires a cir...

Page 7: ...revent possible inlet vent blockage The air plenum allows the blower to pull air into the unit from a higher inlet location to provide protection required see Figure 9 FIGURE9 HOT RETURN RECIRCULATION PUMP The hot return recirculation pump circulates the hot water through the hot water line to eliminate delays at plumbing fixtures see Figure 5 FIGURE5 DRAIN VALVE The drain valve is used to drain t...

Page 8: ...t the unit off when a pressure buildup in the exhaust vent pipe occurs This switch is a positive pressure switch that requires an increase in pressure to change the electrical contacts from normally closed to open When this switch prevents the unit from igniting most likely the exhaust is blocked Check for obstructions in the exhaust venting and exhaust vent terminal see Figure 14 BLOCKED INLET PR...

Page 9: ...ngthen the igniter it is still fragile and care must be taken when handling the igniter to prevent breakage see Figure 17 FIGURE 17 OIM OUTDOOR INTERFACE MODULE The OIM is a device that monitors the control system It monitors the ignition control assembly the tank and outlet temperatures the low water cutoff device and the pressure switches The display board provides operating information It recor...

Page 10: ... 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 FIGURE20 THERMOSTAT E C O PROBES The Outback utilizes a two probe system The upper probe located on top of the unit toward the back of the cabinet consists of a thermostat and E C O The thermostat monitors the top tempera...

Page 11: ...L WORK ARE REQUIRED INSULATION BLANKETS Insulation blankets available to the general public for external use on gas water heaters are not approved for use on your State water heater The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters Your State water heater meets or exceeds the ASHRAE IES 90 1b 1999 standards with respect to insulatio...

Page 12: ... off its water supply PROVIDE UNIT SUPPORT Before locating the unit on the roof make sure the strength of the roof and beams are adequate at that point to support the weight of the unit full of water Full weight of approximately 1300 lbs Add 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 bearing capability of the...

Page 13: ...oor location Do not locate unit air inlets near exhaust vents or other sources of contaminated air Be sure that unit is installed such that snow will not block the combustion intake or flue outlet Unit may be installed directly on wood flooring or on Class A B or C roof covering material when roof curb is used Although unit is weatherproof guard against water from higher level runoff and overhangs...

Page 14: ...OT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER IMMEDIATELY CONTACT A QUALIFIED INSTALLER OR SERVICE AGENCY TO REPLACE A FLOODED WATER HEATER DONOTATTEMPTTO REPAIRTHEUNIT ITMUSTBEREPLACED CLEARANCES These heaters are approved for outdoor installations on combustible flooring roof with the minimum clearances of 0 for sides and 1 50 for top Always disconnect electrical power before servicing ...

Page 15: ...own whenever there is a failure of any of the switches CAUTION THE WATER HEATER IS POLARITY SENSITIVE BEFORE APPLYING ELECTRICITY TO THIS HEATER BE CERTAIN THAT SUPPLY NEUTRALWIRE TO GROUND CHECK INDICATES ZERO VOLTAGE GAS PIPING Contact your local gas service company to ensure that adequate gas service is available and to review applicable installation codes for your area TABLE 3 MAXIMUM CAPACITY...

Page 16: ...amage care must be taken not to apply too much torque when attaching gas supply pipe to gas valve inlet Apply joint compounds pipe dope sparingly and only to the male threads of pipe joints Do not apply compound to the first two threads Use compounds resistant to the action of liquefied petroleum gases DISCONNECT THEAPPLIANCEAND ITS MANUAL GAS SHUTOFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING...

Page 17: ...lure or intermittent relief valve operation This type of failure is not covered by the limited warranty An expansion tank or a similar device may be required in the inlet supply line between the appliance and the meter or valve to compensate for the thermal expansion of water under supply pressure Water heater damage due to installation in a closed system is not covered by the limited warranty The...

Page 18: ...18 FIGURE 36 ...

Page 19: ... there are more items available on the current screen As described above touching up and down will allow you to display these items The User Settings sub menu contains items that are adjustable by the user These items can be adjusted by following these steps 1 Move the to the items you wish to adjust by touching up and down 2 Touch select to adjust the parameter 3 Touch up and down to adjust the v...

Page 20: ...ining the tank to deter freezing Tank Pump Status of the tank pump This indicates if the tank pump is enabled by the control The status is either On or Off An On status indicates the control is asking for the tank pump to be turned on An Off status indicates that the control is asking for the tank pump to be turned off Loop Pumps Status of the loop pumps This indicates if the loop pumps are enable...

Page 21: ...un for approximately 10 seconds The control will then return to step 6 12 If a flame is confirmed the control will enter the heating mode where it will continue heating the tank until the setpoint temperature is reached At this point the gas valve is closed and the control enters the post purge cycle 13 The combustion blower will run for the duration of the postpurge cycle to purge the system of a...

Page 22: ...with the ignition module Possible Cause Remedy 1 Igniter is not wired in or 1 Check that the igniter is the wiring is damaged wired in properly or that the wiring is not damaged 2 Igniter is damaged 2 Replace igniter 3 The ignition module is 3 Replace ignition module damaged Fault I M FLAMEFAULT A flame was detected when there is not supposed to be a flame no call for heat Possible Cause Remedy 1 ...

Page 23: ...ore making any adjustment to the gas control pressure regulator Attempts to adjust the regulator during periods of low gas supply pressure could result in overfiring of the heater when the gas supply pressure returns to normal 1 Check gas line pressure with a manometer 2 Check manifold pressure see Table 4 using a pressure gauge manometer connected to the manifold pressure tap on the gas control v...

Page 24: ...YDROGEN GAS IS EXTREMELY FLAMMABLE To reduce the risk of injury under these conditions it is recommended that a hot water faucet be opened for several minutes before using any electrical appliance connected to the hot water system If hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow There should be no smoking or open flame...

Page 25: ... power to the appliance 4 This appliance is equipped with a device which automatically lights the burner Do not try to light the burner by hand 5 Push in control knob slightly and turn clockwise to OFF 6 Wait five 5 minutes to clear out any gas If you smell gas STOP Follow B in the safety information above on this label If you don t smell gas go on to the next step 7 Turn gas control knob counterc...

Page 26: ...pect Every 3 Months Joints should be sealed MAINTENANCESCHEDULE Following are the instructions for performing some of the recommended maintenance Unit inspection and adjustment should be performed by a competent technician FLUSHING 1 Turn off the heater electrical disconnect switch 2 Open the drain valve and allow water to flow until it runs clean 3 Close the drain valve when finished flushing 4 T...

Page 27: ...anode 6 Close the drain valve Open a hot water fixture to allow air to escape Open the cold water supply to heater and allow the tank to fill Follow the lighting instructions 7 Check your anode and drain valve for leaks DRAIN VALVE AND ACCESS PANELS The heater is equipped with a 3 4 drain valve An access panel covers the front of the tank RELIEF VALVE At least twice a year the temperature and pres...

Page 28: ...TER SUPPLIED TO FIXTURES PIPE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH LOCAL CODES CAUTION IF BUILDING COLD WATER SUPPLY HAS ABACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED NOTE CONNECT RETURN LINE FROM HOT WATER CIRCULATING LOOP IF USED TO COLD WATER INLET LINE PIPE TO OPEN DRAIN INSTALL IN ACCORDA...

Page 29: ...UPPLIED TO FIXTURES CAUTION IF BUILDING COLD WATER SUPPLY HAS ABACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED PIPE RELIEF VALVE TO OPEN DRAIN NOTE IF TEMPERED WATER IS RECIRCULATED RETURN LINE SHOULD BE CONNECTED AT POINT A INSTALL IN ACCORDANCE WITH LOCAL CODES TWO TEMPERATURE ONE HEATER HIGH TEMPE...

Page 30: ...IFICATIONS CAUTION IFBUILDINGCOLDWATERSUPPLYHASABACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 5 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTEROUTPUT ADDAN...

Page 31: ...TCIRCULATINGLINEOF180 F 82 C ORBOOSTEDWATER IF USED TO INLETWATER LINETO BOOSTER INSTALL INACCORDANCE WITH LOCALCODES TWO TEMPERATURE TWO HEATERS ONE PRE HEATER ONE BOOSTER HEATER WITH OR WITHOUT BUILDING RECIRCULATION DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 5 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQ...

Page 32: ...K NOTE 4 IF TEMPERED WATER IS RECIRCULATED RETURN LINE SHOULD BE CONNECTED AT POINT A DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 5 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTEROUTPUT ADDANANTI SCALDVALVEFORHOTWATER SUPPLIED TO FIXTURES CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENT...

Page 33: ...g and pounding noises when the heater is operating The sounds are normal however the tank bottom should be cleaned Refer to MAINTENANCE for details 2 Some of the electrical components of the water heater make sounds which are normal Contacts click or snap as the heater starts and stops Transformers often hum WATER LEAKAGE IS SUSPECTED 1 Check to see if the water heater gate valve is tightly closed...

Page 34: ...four second ignition trial and the manifold pressure does not increase above 0 W C then verify that the manual gas control valve is in the ON position If the valve is in the ON position and the previous voltage and gas pressure conditions are met then the gas valve is defective and must be replaced Note that a positive manifold pressure reading of approximately 1 5 38 kPa W C is normal during the ...

Page 35: ...le method d This warranty shall be void and shall have no effect if the design or structure of the water heater is or is attempted to be modified or altered in any way including but not limited to by attaching non company approved appliances or equipment 4 SERVICE AND REPAIR EXPENSES Under the limited warranty the warrantor will provide only a replacement water heater or part thereof The owner is ...

Page 36: ...36 500TENNESSEE WALTZ PARKWAY ASHLAND CITY TN 37015 Phone 800 821 2017 Fax 800 644 9306 www statewaterheaters com ...

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