AHRI GAS-FIRED COMMERCIAL WATER HEATER Installation & Operation Manual Download Page 38 | Manualshive

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4. Setpoint (Display/Change)

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6. Differential (Display only – shows the differential of the thermostat)

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idle

Differential

Operational

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SELECT

SET

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°F/C°

idle

Operational

°F

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Summary of Contents for GAS-FIRED COMMERCIAL WATER HEATER

Page 1: ...ot 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 Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department For your family s comfort safety and convenience it is recommended this water heater be installed and serviced by a plumbing professiona...

Page 2: ...I INSTALLATION FOR POTABLE WATER AND SPACE HEATING 55 VII GAS CONNECTIONS 19 XIV NOTES 56 TABLE OF CONTENTS This gas fired water heater is design certified by CSA International under the American National Standard Z21 10 3 and CAN CGA 4 3 M as indicated on the rating plate These standards are available from CSA Standards Association 5060 Spectrum Way Mississauga Ontario L4W 5N6 CANADA This water h...

Page 3: ... all controls are correctly installed and are properly operating when the installation is complete DO NOT operate this water heater without first being certain it is filled with water DO NOT tamper with or alter the water heater and or controls DO NOT operate water heater with jumpered or absent controls or safety devices DO NOT operate water heater if any external part has been under water Immedi...

Page 4: ...Operation Manual to change the maximum setpoint limit max setpoint Make sure the water heater control display is not in a public area that can result in the temperature settings being improperly adjusted Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time generally two weeks or more Hydrogen gas is extremely flammable To pr...

Page 5: ...02 8 148 0 139 2 175 153 131 26 0 N A 25 4 1 N A Denotes not available Non Flue Damper Models Figure 2 Model Description A in B in C in D in Capacity GAL Input BTU hr 65 370 000 71 38 64 75 54 13 8 65 399 999 NAT ONLY 71 38 64 75 54 13 8 75 300 000 72 00 65 75 54 13 7 80 425 000 81 00 75 50 64 50 10 80 505 000 81 00 75 50 64 50 10 Model Description A cm B cm C cm D cm Capacity Litres Input kW hr 2...

Page 6: ... 25 64 50 56 00 19 50 55 13 80 199 999 71 88 66 25 64 50 56 00 19 50 55 13 80 250 000 235 000 LP 71 88 66 25 64 50 56 00 19 50 55 13 98 199 999 83 38 77 25 75 50 67 00 19 50 66 13 98 250 000 235 000 LP 88 38 77 25 75 50 67 00 19 50 66 13 100 199 999 76 75 70 00 67 88 60 38 20 75 56 88 100 250 000 76 75 70 00 67 88 60 38 20 75 56 88 Model Description A cm B cm C cm D cm E cm F cm Cap Liters Input k...

Page 7: ... Check the rating plate on front of the water heater for model number verification Model Description A in B in C in D in E in Capacity GAL Input BTU hr 75 160 000 155 000 LP 70 13 67 13 65 00 54 50 6 Model Description A cm B cm C cm D cm E cm Capacity Liters Input kW hr 283 9 46 9 45 4 LP 178 171 165 138 15 2 Model Description A in B in C in D in E in Capacity GAL Input BTU hr 75 125 000 72 25 67 ...

Page 8: ...ic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANS Z21 22 and the Standard CAN1 4 4 Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve must be marked with a maximum set pres...

Page 9: ... below 15 pounds per square inch will result in improperly sanitized dishes The National Sanitation Foundation also recommends circulation of 180 F water Where this is done the 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 water at the point of take off to the dishwashing machine...

Page 10: ...phone in another building Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED This water heater must be located in an area where leakage of the tank water line connections or the combination temperature and pressure relief valve will not result in damage to the area adjacent to the water h...

Page 11: ...oval when servicing This water heater MUST be installed indoors out of the wind and weather Note For California installation this water heater must be braced anchored or strapped to avoid falling or moving during an earthquake See instructions for correct installation procedures Instructions may be obtained from DSA Headquarters Office 1102 Q Street Suite 5100 Sacramento California 95811 Water hea...

Page 12: ...OR The thermal break leg kit supplied with the water heater must be used 3 Proper venting practices must be considered when selecting a location for this water heater For exact venting specifications please consult the Venting section of these Installation and Operating Instructions 4 It is recommended that a minimum clearance of four 4 inches 10 2 cm be provided on the side of the water heater fo...

Page 13: ...ace but not less than 100 in 2 254 cm2 2 If the openings communicate with the outdoors through horizontal ducts each opening must have a minimum free area of 1 in 2 2000 BTU 2 54cm2 0 59kW per hour of the total rating of all gas appliances in the enclosure 3 If the openings communicate directly with the outdoors or through vertical ducts with the outdoors each opening must have a minimum free area...

Page 14: ...g must be within 12 inches 30 5 cm of the top and one within 12 inches 30 5 cm of the bottom of the enclosure UNCONFINED SPACES In unconfined spaces in buildings infiltration may be adequate to provide air for combustion ventilation and dilution of flue gases However in buildings of tight construction for example weather stripping heavily insulated caulked vapor barrier etc additional air may need...

Page 15: ...ld result in property damage personal injury or death Carefully inspect the venting system of a replacement water heater installation before connecting to the venting system All joints in the vent connector must be securely fastened with screws and fit tightly together Inspect the venting system for signs of deterioration rust and perforation and replace any sections that are not in good condition...

Page 16: ...p position when open Be certain the arrow is in a visible position when installed DRAFT DIVERTER This water heater has been shipped with a draft diverter for which it was designed Remove the bag containing the legs and instructions from the draft diverter Attach the legs to the draft diverter and attach the draft diverter to the water heater per the instructions in the bag Figure 6 Modification to...

Page 17: ...FILLED WITH WATER APPROXIMATE TIME TEMPERATURE RELATIONSHIPS IN SCALDS 120 F 49 C More than 5 minutes 125 F 52 C 1 to 2 minutes 130 F 54 C About 30 seconds 135 F 57 C About 10 seconds 140 F 60 C Less than 5 seconds 145 F 63 C Less than 3 seconds 150 F 66 C About 1 seconds 155 F 68 C About 1 second If sweat fittings are to be used DO NOT apply heat to the nipples on top or side of the water heater ...

Page 18: ... relief valve must also have an hourly rated temperature steam BTU discharge capacity not less than the hourly rating of the water heater Install the combination temperature and pressure relief valve into the opening provided and marked for this purpose on the water heater Note Some models may already be equipped or supplied with a combination temperature and pressure relief valve Verify that the ...

Page 19: ...O NOT apply pipe dope to the gas valve inlet and make certain that no pipe dope has become lodged in the inlet screen of the gas valve Extreme care must be taken to ensure no pipe dope enters the gas valve Avoid excessive torque when tightening the gas supply line to the gas valve Excessive torque may result in cracking of the gas valve housing and could create a gas leak The suggested maximum tor...

Page 20: ... AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE WATER HEATER TO FILL THE WATER HEATER 1 Close the water heater drain valve by turning the knob clockwise If alternative water connections are provided but not used make certain they are plugged i e rear connections 2 Open the cold water supply shut off valve 3 Open several hot water faucets to allow air to escape from the s...

Page 21: ... power supply The water heater must be wired on a separate circuit and breaker If a flexible line cord and plug is permitted by local code then provide a three wire grounding type receptacle within reach of the line cord provided on the control box Do not plug the line cord into a receptacle that can have the power supply interrupted by a switch that is used to control lights or another appliance ...

Page 22: ...22 Spark to Pilot Ignition IID Wiring Diagram ...

Page 23: ...23 SECTION IX OPERATING INSTRUCTIONS Lighting And Shutdown Instructions Standing Pilot Models ...

Page 24: ...24 Lighting and Shutdown Instructions Spark to Pilot Ignition IID Models ...

Page 25: ...ducing hot water of sufficient temperature for sanitizing purposes CAUTION Whenever the water heater is filled with cold water condensate will form on the cool tank surface and drops of water will fall on the hot burner and combustion chamber surfaces producing a sizzling noise Condensation is normal and does not indicate a leak It will disappear when the tank becomes heated The lower the temperat...

Page 26: ...0 of reported tank leaks on installation are proven to be condensation To avoid unnecessary expense and inconvenience make sure the tank is leaking before calling a service person SELECT SET Status Set button Select button Temperature Down Button Temperature Up Button F idle setpoint Operational Sequence of operation Indicator Reads Idle or Heating Status Indicator Read Operational or Service Need...

Page 27: ...s SET button for new setting to take effect immediately Setpoint will stop flashing If the SET button is not pressed the new temperature setting will take effect in approximately 10 seconds SELECT SET Status F idle Operational Step 1 SELECT SET Status F idle setpoint Operational Step 2 Setpoint flashes SELECT SET Status F idle setpoint Operational Press SET Button for setting to to take effect imm...

Page 28: ... Press SET button for new setting to take effect immediately The setpoint will stop flashing If the SET button is not pressed the new temperature setting will take effect in approximately 10 seconds SELECT SET Status F idle Operational Step 1 SELECT SET Status F idle setpoint Operational Setpoint flashes Step 2 SELECT SET Status F idle setpoint Operational Setpoint flashes for 10 seconds Press SET...

Page 29: ...s SET button to change temperature format Symbol F C will flash Step 3a Press Temperature Up button to change temperature format to C SELECT SET Status C idle Operational Step 3a F C F C Flashes Changes to C SELECT SET Status idle Operational Press select Step 1 F F C SELECT SET Status idle Operational Step 2 F C Flashes F F C ...

Page 30: ...in the format selected F or C in 10 seconds Step 5 Pressing SELECT button will return display to setpoint in format selected F or C immediately SELECT SET Status F idle Operational Step 4 Press Set F C Symbol F C Stops Flashing SELECT SET Status F idle Operational Step 3b F C F C Flashes Changes to F SELECT SET Status F idle Operational Press select Step 5 Setpoint shown in F ...

Page 31: ...the pilot Figure 8 WARNING Do not run out of propane gas Damage to the water heater may occur WARNING Water heaters are heat producing appliances To avoid damage or injury there must be no materials stored against the water heater or vent system and proper care must be taken to avoid unnecessary contact especially by children with the water heater and vent system UNDER NO CIRCUMSTANCES SHALL FLAMM...

Page 32: ...ning to aid in removal of hard water deposits from the tank bottom If this water heater operates under hard water conditions the following should be performed at least every 3 months Drain the water heater Remove the cleanout jacket cover and tank cover When cleaning the tank care must be taken to avoid trying to break deposits loose as this could damage the glass lining and shorten the life of th...

Page 33: ...No Serial No Service Phone Days Nights Address Supplier Supplier Phone No TYPICAL INSTALLATION Manufactured under one or more of the following U S Patents RE 34 534 B1 5 341 770 4 416 222 4 628 184 4 669 448 4 672 919 4 808 356 4 829 983 4 861 968 4 904 428 5 000 893 5 023 031 5 052 346 5 081 696 5 092 519 5 115 767 5 199 385 5 277 171 5 372 185 5 485 879 5 574 822 5 596 952 5 660 165 5 682 666 5 ...

Page 34: ...itch closes the control sends 24 volt power to the pilot valve PV terminals on the gas valve allowing pilot gas to flow to the pilot The control also sends high voltage through the pilot electrode to spark to the pilot hood and ignite the pilot gas If the pilot does not ignite within 90 seconds the pilot valve is denergized and the sparking stops for 65 seconds and will attempt to ignite the pilot...

Page 35: ...oint is shown in the display Step 2 Pressing Select button will change display to next mode SELECT SET Status F idle Operational Water Temp SELECT SET Status idle Operational Max Setpoint next to Temperature Setpoint value Max Setpoint The following procedure is for service and installation personnel only Resetting lockout conditions without correcting the malfunction can result in a hazardous con...

Page 36: ... User Mode 1 Max Setpoint Display Change 2a Water Temperature Average Displays average if there are two sensors sensor temperature displayed if single sensor is used SELECT SET Status F idle Water Temp Operational SELECT Lockout RESET Status Service Needed Error Code Shown in Water Heater Display SELECT SET Status F idle Operational Max Setpoint value Water Heater Display Max Setpoint ...

Page 37: ...ater Temperature Lower Sensor Displays if there are two sensors 3 Flame Current of Pilot Flame Sensor Displays only in the Heating Cycle SELECT SET Status Heating Operational Flame Current µA SELECT SET Status F idle Operational Upper Sensor SELECT SET Status F idle Operational Lower Sensor ...

Page 38: ...e 5 F C Display Change 6 Differential Display only shows the differential of the thermostat SELECT SET Status F idle Differential Operational SELECT SET Status F C idle Operational F SELECT SET Status F idle setpoint Operational ...

Page 39: ...le Max Operational Setpoint SELECT SET Status idle Operational No current error codes Setting the water temperature to the maximum set point can result in scalding hot water delivered to the faucets It is highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of the installation See following section to change the maximum setpoint limit max setpoi...

Page 40: ...nt the user can select Note The maximum setpoint is approximately 180 F Step 4 Press Set button to confirm new Max Setpoint value and stop setting mode SELECT SET Status F idle Operational Max Setpoint Max Setpoint Flashes SELECT SET Status F idle Operational Max Setpoint Max Setpoint continues to flash while making adjustments SELECT SET Status F idle Operational Max Setpoint Max Setpoint stops f...

Page 41: ...re Up and Select buttons together for 3 seconds Display of Water Temperature Step 1 In Service Mode Press the Select button until Water Temp is displayed in the upper right section of the water heater display For water heaters using two temperature sensors in the tank this will be the average reading between the two sensors For water heaters using a single sensor this is the reading for the sensor...

Page 42: ... the status window of the water heater display To Display Flame Sense Current of the Pilot Flame Sensor The pilot flame sense current is available only when the burners are in operation Step 1 Make sure the status displays Heating or draw enough hot water to start the burners Step 2 Enter the Service Mode described previously Step 3 Press the Select button until a number value is displayed with Fl...

Page 43: ... desired temperature is shown on the water heater display SELECT SET Status F idle setpoint Operational SELECT SET Status F idle setpoint Operational Setpoint Flashes SELECT SET Status F idle setpoint Operational Setpoint Flashes Note The maximum temperature that can be set in the Water Heater Display is limited to the Max Setpoint described previously To change the Max Setpoint refer to the proce...

Page 44: ...point Setpoint stops flashing in the water heater display To Display and Change Temperature Format F C To Change Temperature Format in Display from F to C or C to F Step 1 While in Service Mode press Select button until F C is shown in the upper right portion of the water heater display SELECT SET Status F idle setpoint Operational Setpoint Flashes SELECT SET Status F idle setpoint Operational Set...

Page 45: ...ress Temperature Up button to change temperature format to C Step 3b Press Temperature Down button to change temperature format to F SELECT SET Status idle Operational F F C F C Flashes SELECT SET Status idle Operational C Changes to C F C F C Flashes SELECT SET Status idle Operational F Changes to F F C F C Flashes ...

Page 46: ...will stop flashing Step 5 Pressing Select button will return display to setpoint in format selected F or C immediately SELECT SET Status F idle Operational Lower Sensor Setpoint shown in F SELECT SET Status F idle Operational F F C F C Symbol Stops Flashing ...

Page 47: ...put the water heater into a Hard Lockout condition in which the water heater will not operate and cannot be reset in the User Mode To reset a hard lockout first enter the Service Mode described earlier by pressing both the Temperature Up and Select Buttons at the same time for 3 seconds Then press the lower right button under Lockout Reset in the water heater display and hold for 3 seconds Lockout...

Page 48: ...elect button after the Software Version item 8 in the previously described sequence of service modes will show an error code history if there have been any previous operating problems with the water heater If the display shows there is not a current error code The Water Heater Display will provide up to 10 previous error codes The oldest error code will be stored in code index 1 and the most recen...

Page 49: ...10 If there is a number displayed note what the number is The label next to the water heater display will identify the code number If no number is displayed with only a in the water heater display then there has not been an error code for error code index 10 SELECT SET Status idle Operational Error Code Index SELECT SET Status idle Operational No Error Code Shown for Code Index 10 ...

Page 50: ...change to the previous code index code 9 Step 5 Press the Select button for code index 9 to view if there are any code numbers SELECT SET Status idle Operational Error Code Index SELECT SET Status idle Operational Stored Error Code For Code Index 9 ...

Page 51: ...y opened If not disconnect damper harness at damper plug connection and check for 24 volts between pins on red and white wires If no voltage check wire harness or measure output on control board pins 1 4 If there is no voltage at the control board replace control Replace wire harness if voltage does not pass to the pin terminals from the control If there is 24 volts at flue damper connection repla...

Page 52: ...ater Determine cause of low or high voltage Call an electrician or your utility The water heater should be on a separate line 61 DC Output Voltage Unstable Check line voltage to the water heater for erratic readings Also check wiring to make sure there are no shorts If power supply and wiring is O K replace control board 62 Maximum Number of Retries Detected Pilot is either not lighting or not sta...

Page 53: ...862 8653 8449 8250 8057 7869 7685 7507 90 7333 7165 7000 6839 6683 6531 6383 6238 6098 5961 100 5827 5697 5570 5446 5326 5208 5094 4982 4873 4767 110 4663 4562 4464 4368 4274 4183 4094 4006 3922 3839 120 3758 3679 3602 3527 3453 3382 3312 3244 3177 3112 130 3048 2986 2925 2866 2808 2752 3697 3643 2590 2538 140 2488 2439 2391 2344 2298 2253 2209 2166 2124 2083 150 2043 2004 1966 1928 1891 1856 1820...

Page 54: ...per 6b Cleanout Cover Gasket A S M E Not Pic 24 Anode Rod 7 Heat Shield 25 Tank Leg Thermal Break 8 Main Burner Tube s 26 Lower Temp Sensor 9 Burner Tray 27 Wire Harness Lower Sensor 10 Pilot Burner Assembly 28 T P Valve 11 Pilot Supply Tube 29 Nylon Cable Clamp 12 Main Burner Manifold 30 Self Tapping Screw 13 Gas Valve 31 Control display 14 Main Burner Orifice 32 Upper Temp Sensor 15 Control Box ...

Page 55: ...micals such as those used for boiler treatment must not be introduced into potable water used for space heating 3 This water heater must not be connected to an existing heating system or component s previously used with a non potable water heating appliance 4 When the system requires water for space heating at temperatures higher than required for other means such as an ASSE approved mixing valve ...

Page 56: ...56 SECTION XIV NOTES ...

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