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Introduction

The control system for the fully condensing 80 and 100 gallon Gas High Efficiency (GHE)
Commercial Gas Water Heater is intended for use indoors. The control combines all operational
functions needed for a water heater with a powered burner system into a single printed circuit board
package. The control inputs are from a water temperature probe, pressure switches, flue gas
temperature sensor, high temperature limit switch and flame sensor. The control provides outputs for
a blower motor, spark igniter, gas valve, and has a nonvolatile storage of fault
history. The system incorporates a liquid crystal display (LCD) as the interface for the customer to
control heater function. The user interface consists of buttons for scroll through system menus,
adjustment of settings and to provide additional operational status information.

Safety

ELECTRICAL SHOCK - Troubleshooting and repairing this water heater can expose you to
electrical shock. Some of the diagnostic procedures require the presence of 120 volt AC electricity.
Use extreme caution when performing these procedures. When replacing an unserviceable
component, turn off all power to the water heater and check for the presence of power with a multi-
meter or test lamp. The ignition cable carries more than 10,000 volts of electrical energy. Use
extreme caution when diagnosing the Ultra High Efficiency Water Heater.

WATER TEMPERATURE ADJUSTMENT
Safety and energy conservation are factors to
be considered when selecting the water
temperature setting on the thermostat. Water
temperatures above 125

0

F can cause severe

burns or death from scalding. The chart shown
here may be used as a guide in determining the
proper water temperature for your application.

4

FLAMMABLE LIQUIDS AND VAPORS
Gasoline, as well as other flammable material and liquids
(adhesives, solvents, etc.), and vapors they produce are
extremely dangerous. DO NOT handle, use or store gasoline or
other flammable or combustible materials anywhere near or in
the vicinity of a water heater. The spark ignition and burner
assembly in the water heater controls can ignite these vapors.
Failure to do so can result in property damage, bodily injury or
death

Triton

Service Manual SVC1020T ; Rev 4

80 and 100 gallon chassis

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Содержание TRITON

Страница 1: ... Gallon Ultra High Efficiency Water Heaters Service and Training Manual For use with the following models GHE80SS GHE80SU GHE100SS GHE100SU CATEGORY IV Models Fan Assisted Combustion SVC1020T Revision 4 January 2020 ...

Страница 2: ...NITION ATTEMPTS 26 CONDENSATE REMOVAL TUBE 26 ERROR CODES 27 TROUBLESHOOTING ERROR CODES 31 ERROR A001 IGNITION LOCKOUT 31 ERROR A002 FLAME IS NOT STABLE 33 ERROR A003 INTAKE SWITCH OPEN 33 ERROR A004 POF OPEN DURING HEATING 34 ERROR A005 POF OPEN DURING PRE PURGE 34 ERROR A006 POF OPEN DURING POST PURGE 34 ERROR A007 EXHAUST PRESSURE SWITCH OPEN 35 ERROR A008 POF BLOWER MISMATCH 35 ERROR A010 END...

Страница 3: ...RROR A029 FAILED IGNITION 39 ERROR A030 FLAME LOSS DURING HEATING 39 ERROR A031 LOSS OF ANODE COMMUNICATION 39 ERROR A033 A043 COMMUNICATION ERRORS 39 ERROR A044 PROCESSOR CLOCK LINE FREQUENCY DISAGREE 39 ERROR A101 CONFIGURATION DATA RESTORE 40 ERROR A102 TIME CLOCK NEEDS TO BE PROGRAMMED 40 ERROR A103 TIME CLOCK NOT ADVANCING TIME PROPERLY 40 ERROR A104 WATER LEAK DETECTED 40 ERROR A108 IGNITION...

Страница 4: ...lectricity Use extreme caution when performing these procedures When replacing an unserviceable component turn off all power to the water heater and check for the presence of power with a multi meter or test lamp The ignition cable carries more than 10 000 volts of electrical energy Use extreme caution when diagnosing the Ultra High Efficiency Water Heater WATER TEMPERATURE ADJUSTMENT Safety and e...

Страница 5: ...nnection 2 NPT inlet outlet side connect front and rear 1 5 for Top Plugged from factory Vent Material Allowed Polypropylene PVC ABS CPVC plastic pipe options 130 160kbtu 2 3 4 6 venting options 199kbtu 2 3 4 6 venting options 250 399kbtu 3 4 6 venting options SEE USE AND CARE MANUAL Maximum Vent Lengths SEE USE AND CARE MANUAL Noise Level 60 db 15 feet max using test ANSI S12 34 ISO 3744 Water Te...

Страница 6: ...al Gas 3000 6300 3000 17 Propane 3200 6300 3200 GHE80 300 5 Natural Gas 3000 7400 3000 17 Propane 3200 7500 3200 GHE100 130 6 Natural Gas 3400 5400 3400 17 Propane 3200 5400 3200 GHE100 160 7 Natural Gas 3400 6600 3400 17 Propane 3200 6600 3200 GHE100 200 8 Natural Gas 3400 4900 3400 17 Propane 3200 4900 3200 GHE100 250 9 Natural Gas 3400 6300 3400 17 Propane 3200 6300 3200 GHE100 300 10 Natural G...

Страница 7: ...Component Parts of the TRITON 7 Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis ...

Страница 8: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Wiring and Schematic Diagram 8 ...

Страница 9: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Connection Diagram 9 ...

Страница 10: ...e Switch Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Gas Valve Blower Ignitor Ignitor Wire Leak Sensor Powered Anode Control Transformer Ignition Control Top View 10 Low Gas Pressure Switch Flame Rod Wire Transformer Inside View ...

Страница 11: ...s normally closed switch has a trip setting of 1600F Power Anode Controller The power anode controller controls the current flowing through each anode The anode system is protecting the tank against corrosion The power anodes can be checked through menu options under system and check tank health to see the power output of the anodes The closer to 100 power the more bare metal there is in the tank ...

Страница 12: ...ark igniter gas valve and nonvolatile storage of fault history The control receives inputs from temperature probe pressure switches Flue gas temperature sensor high temperature limit switches and senses flame The control makes 9 tries of 3 attempts total of 27 tries for ignition If no ignition the control waits for one hour before re attempting ignition LCD Display and User Control Panel Color LCD...

Страница 13: ... the water temperature to the controller and also provides an energy cut off in the event the water gets too hot 2000F Lower Temperature Probe This prove provides the lower tank temperature to the controller Leak Sensor This sensor detects water when 2 5 5mL of water is present It is installed in the bottom pan of the unit and has a splash proof guard above it so tank condensation or sprayed water...

Страница 14: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis User Interface 14 ...

Страница 15: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis User Interface 15 ...

Страница 16: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis User Interface 16 ...

Страница 17: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis User Interface 17 ...

Страница 18: ...iter should be sparking and gas valve should be releasing fuel Heating This message appears when a call for heat is present and the burner is actively firing Post Purge When the call for heat is satisfied the gas valve is de energized while the blower remains energized to clear the heat exchanger Retry Test failed ignition and it is retrying Recycle The water heater is in the 30 minute delay betwe...

Страница 19: ... is attempted The T035 Alert will not prevent the combustion system from operating Any other Gas Valve Relay alarms A036 A037 A038 will cause a Fault condition and prevent combustion system operation The inlet pressure switch and the exhaust flue pressure switches are normally closed switches If either switch opens 4 seconds at any time the ignition control will close the gas valve and stop combus...

Страница 20: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Sequence of Events 20 ...

Страница 21: ...Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Sequence of Events 21 ...

Страница 22: ... flue temperature water temperature sensors and ECO high limit device Water temperature thermistor thermostat measures the water temperature inside the tank Checks to make sure the ECO is not tripped Checks to make sure that flue gas temperature is less than 190 F normal state Checks to make sure the pressure switch proof of fan is OPEN normal state prior to activating blower The control will not ...

Страница 23: ...he set point is reached the gas valve is closed and the control enters the post purge cycle Post Purge The control will execute an inter purge cycle if no flame is sensed The inter purge cycle blows out excess fuel from the combustion chamber Once flame is rectified the spark igniter is de activated Main burner is now in Heat Mode and the controls heat the water in the tank It will continue heatin...

Страница 24: ...em safety devices The word Standby will be in the LCD display window If the temperature drops below the set point value minus differential the control will automatically call for heat and repeat the entire operating cycle 24 Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Sequence of Operations Sequence of Operations Screenshots ...

Страница 25: ...e when the water temperature approaches 205 F If the water temperature inside the tank reaches 203 F the ECO switch normally closed will open The controller will disable all heating functions and will render the heater into an error condition Pressure Switches Pressure switches are incorporated to provide proof of fan blower operation and to detect blocked inlet and outlet vent conditions The cont...

Страница 26: ...normal heating cycle sequence the control will finish the sequence of the ignition and then de energize the main gas valve The blower remains energized and the system is purged for the inter purge duration After the inter purge time expires the control turns the blower off waits for the pressure switch to open and performs a relay check on the gas valve Power Outages The controls will automaticall...

Страница 27: ...g A001 A001 Ignition Lockout Page 31 A002 A002 Flame is not stable Page 33 A003 A003 Intake switch open Page 33 A004 A004 PoF Switch error H Page 34 A005 A005 PoF Switch Error E Page 34 A006 A006 PoF Switch error P Page 34 A007 A007 Exhaust Switch Open Page 35 A008 A008 PoF Switch Blower mismatch Page 35 A016 A016 High Tank Temperature Page 35 A017 A017 High Flue Temp Page 36 A018 A018 Flue Temp S...

Страница 28: ...9 A039 A039 Flame sense cct fault Page 39 A040 A040 Controller RAM fault Page 39 A041 A041 Controller ROM fault Page 39 A042 A042 Controller EEPROM fault Page 39 A043 A043 IC Program execution fault Page 39 A044 A044 Processor Clock Line Frequency Disagree Page 39 A101 A101 Configuration Data Restore Failure Page 40 A102 A102 Time Clock needs to be programmed Page 40 A103 A103 Time Clock not advan...

Страница 29: ...Health Degraded Needs Service Page 42 T116 T116 Combustion Health Degraded Needs Service Page 42 T117 T117 Time to Drain and Inspect Tank Page 42 T118 T118 Time to Check Venting for Debris Page 42 T119 T119 Time to Clean Out the Condensate Drain Trap Page 42 T120 T120 Time to Replace the Neutralizer Page 42 T122 T122 Powered Anode Control Comm Failure Page 43 A T123 T123 Upper Anode Open Page 43 T...

Страница 30: ...e Overload Page 43 A T133 T133 Lower Anode Open Page 43 T134 T134 Lower Anode Mounting Error Page 43 T135 T135 Lower Anode Shorted Page 43 T136 T136 Lower Anode Overload Page 43 T137 T137 Lower Anode Pre Overload Page 43 Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis NO T ES Error Codes 30 ...

Страница 31: ...E NO TRAP OR NEUTRALIZER KIT IN THE CONDENSATE RUN Does condensate line maintain at least 1 4 per foot fall to drain Runs than cannot maintain at least 1 4 per foot fall and or are over 15ft in distance must utilize a condensate pump If pump is being utilized is it working Check venting Are intake and exhaust vent runs within maximum allowances Are there any horizontal runs that may be pitched inc...

Страница 32: ...tion control board and Disconnect the Molex connector from the P4 connection Cycle power and or clear any alarms When the display is showing IGNITION measure for 24 across the outside pins on the P4 connector If you get the 24V then the control board is operating correctly Replace the gas valve wiring harness If you do not get the 24V replace the ignition control board Is the gas valve working The...

Страница 33: ...wances Are there any horizontal runs that may be pitched incorrectly and holding water debris to create restriction Is exhaust vent pushed too far down into the grey exhaust tee Venting should not go more than 2 inches into the tee Verify vent terminations If concentric vent kit is being used remove intake vent from heater and recycle If no error occurs with intake removed then issue is with the c...

Страница 34: ... damaged Confirm the rubber cap is covering the test port on top of the pressure switch if the cap is missing it will allow air pressure to escape and could result in alarm to occur Check air intake for blockages and remove blockage if present Remove air intake from blower confirm no debris has been sucked into the blower housing Clear the alarm and confirm blower is running when display status sh...

Страница 35: ...ower is off If the switch is reading closed has continuity with the blower not running replace the PoF switch Clear the alarm and see if the A008 returns If A008 returns and the pressure switch is reading open no continuity replace the ignition control board Error A010 End Of Line Test Failure This error should never present on a unit in the field If this error should occur replace the ignition co...

Страница 36: ...location P2 Pins 1 and 2 on the control board is tight all wires are secure and the pins on the control board are not bent broken Disconnect the 2 white wires from the flue gas sensor and check the ohms reading across the two spade terminals on the sensor Using the chart below the temperature reading should be between ambient air temperature and no more than 160 degrees If the ohms reading on sens...

Страница 37: ... the harness and the pins on the control board are not bent broken Disconnect wiring from the ECO Temperature probe Check the ohms reading across pins 1 2 as shown in the photo to the right and compare to the chart below The resistance should show about what the water temperature is inside the tank Replace the temp probe if the circuit is open or the resistance value does not represent the water t...

Страница 38: ...omes on If the blower does not come on disconnect the wiring harness with black white red and blue wires from blower With the power turned on to the unit and this harness disconnected the blower should run at full speed If blower still does not come on or will only run at a very low speed then replace the blower Error A026 Blower Expected RPM vs Actual RPM mismatch Control board detects blower run...

Страница 39: ...shooting See Page 31 Error A030 Flame Lost During Heating This code means the unit lost flame signal during heating The unit will attempt to heat 3 times in 3 consecutive cycles After the 3rd try the unit will lock out with a code A002 Refer to Error Code A002 for troubleshooting Error A031 Loss of Anode Communication This error code means there is a loss of Anode communication This will not disab...

Страница 40: ...splay Error A109 External CO Sensor Alarm CO sensor detects carbon monoxide above the threshold limit The unit does not come with a CO sensor If the unit does not have one wired directly to it then the configuration setup could be causing a false alarm If there is an auxiliary CO Sensor connected to the unit follow the sensor manufacturer s instructions for checking proper operation of the sensor ...

Страница 41: ...alert will clear on its own when the issue is resolved Confirm wiring harness is securely connected to lower tank temperature sensor and confirm the wiring harness at the P2 connection on the control board is secure If no wiring is loose disconnect wiring from lower temperature probe Check ohms reading across the pins of the sensor A good sensor should read between 1K to 36K ohms If sensor reads o...

Страница 42: ...0 Periodic Maintenance All of these alerts regard routine maintenance When you clear the alarm s the timer for the maintenance alert will automatically reset Things to check during routine maintenance are the following Drain the tank and clean remove any build up or debris through the hand hole cleanout Routine check of the venting to ensure no debris or buildup in vent runs Routine inspection of ...

Страница 43: ...otecting the tank Confirm both wiring harnesses are securely connected to anode control module and no signs of damage to wiring If both harnesses are secure and LED on anode module is not green anode module needs to be replaced If anode module LED is green confirm wiring harness at the P8 connector on ignition board is secure and no signs of damage If this checks good cycle power If issue persists...

Страница 44: ...teps NOTE To check the anode rod turn off power to the water heater With power wire lead removed from anode check for ohms reading by putting one meter lead to center stud of anode and the other meter lead to the hex head of the anode as show in the photos to the right When checking the anode you will need to do the ohms checking using both polarities As shown to the right check with black to stud...

Страница 45: ...lex GREEN GROUND RED UPPER ANODE BLUE MIDDLE ANODE ORANGE LOWER ANODE Note Turn off power to water heater With anode power wire disconnected insert one meter lead into the wire as shown Locate the anode control module Disconnect the anode power lead harness from the anode control module NOTE If this is a new install and no issues were found during anode Overload and or Pre Overload testing see nex...

Страница 46: ...4 6 Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis Notes ...

Страница 47: ...sure port is labeled as IN See photos below Attach a manometer to the inlet side of the gas valve Turn gas supply back on and read the pressure while the heater is turned off Confirm the pressure is within 3 5 10 5 w c for natural gas 11 0 13 0 w c for LP Turn the heater on and wait for Ignition on the display Any pressure drop at all confirms the gas valve has opened and is operating During the I...

Страница 48: ...s for at least 30 seconds Insert your analyzer sensor into pressure switch tubing and check your CO readings 7 Once you have a consistent CO2 reading we need to adjust the reading to 8 8 9 2 CO 10 3 10 8 for LP gas If your reading is higher than 9 2 then adjust the screw clockwise if your reading is lower than 8 8 then adjust the screw counterclockwise 8 When final adjustments are complete close a...

Страница 49: ...cessed through the hyperlinks below Below is a list of currently available servicing video links with step by step walkthroughs of replacing each part Links are active in PDF Documents If you have received this document as a paper copy videos can be found by visiting Rheem s YouTube channel at www youtube com RheemMFG Replacing the Burner Assembly Replacing the Gas Pressure Switch Replacing the Ig...

Страница 50: ...mbly and Repair 1 Disconnect power to the water heater 2 Disconnect the three Molex connections One goes to the ignition control board The other 2 pigtail to other wiring harness 3 Remove the two Phillips screws holding the display assembly to the top of the water 4 Remove the display assembly and replace in reverse order Water Temperature Sensor Blower Motor 1 Disconnect power to the water heater...

Страница 51: ...switch assembly in place 4 Replace in reverse order Flame Sensor 1 Disconnect power to the water heater 2 Remove the yellow wire to the flame rod 3 Remove the two Phillips screws 4 Remove the flame rod You may need a small putty knife to get it started 5 Clean all old gasket material from the burner assembly 6 Replace in reverse order Igniter 1 Disconnect power to the water heater 2 Remove the gre...

Страница 52: ...gas valve and from the bottom of the blower 2 Disconnect the leads to the igniter and to the flame rod sensor as well as the ground 3 Undo the two harnesses from the blower 4 Disconnect the two leads connected to the low gas pressure switch and remove the cable harness from the top of the gas valve using the Phillips head screwdriver 5 Using the ratchet remove the 5 bolts attaching the burner asse...

Страница 53: ...ovided 10 Make sure to attach the blower to the burner in the same orientation as it had been attached previously 11 Insert the burner assembly back into the top of the water heater making sure that the air intake and the gas valve are pointing towards the back 12 Bolt the burner assembly back into place and make sure to tighten all of the bolts using the ratchet and half inch socket ...

Страница 54: ...ad from the flame rod sensor to the control box 15 Reconnect the two leads to the low gas pressure It does not matter which lead is connected to which tab 16 Reconnect the two harnesses to the front of the blower 17 Reattach the cable harness to the top of the valve and secure it with the screw 18 Reattach the intake hose to the front of the gas valve and the POF switch to the bottom of the blower...

Страница 55: ...lled needing to input their configurations we would be asked to direct him or her to the location in our menu to enter their configurations IF AN END USER CALLS REQUESTING BACNET SUPPORT WE MUST DIRECT THEM TO THEIR BACNET FACILITATOR OR IT SPECIALIST Configurations When speaking with a BACnet facilitator walk the caller through how to access configuration settings in order to input their EXISTING...

Страница 56: ...4 80 and 100 gallon chassis To access the menu containing BACnet configurations the caller will select the settings icon in the bottom left of their display screen as pictured below From this screen he or she will select BACnet on the second row of icons 5 6 ...

Страница 57: ...BACnet Configurations Triton Service Manual SVC1020T Rev 4 80 and 100 gallon chassis 5 7 ...

Страница 58: ...T under any circumstances provide advice for this setting The BACnet config should always be left as MS TP MASTER The Max Master Addr should always be left at 127 unless the BACnet Facilitator wants to change it An end user should never change this and Rheem support should never suggest it The device instance will also come from the BACnet facilitator If the DI is 4194303 it is defaulting and not ...

Страница 59: ...e BACnet settings See the below details on configuring the BACnet settings BACnet Settings Details BACnet Setting Default Value Additional Information BACnet MAC Address 1 Range 0 to 127 for MS TP Master and 0 to 254 for MS TP Slave When possible 0 should be avoided Must be unique among all devices on a given BACnet network segment BACnet Baud Rate 38 4 kbps kbps kilo bits per second Options 9 6 k...

Страница 60: ...seized up Reinstall the valve fill the tank with water and clear the alarm If issue occurs again next month then the valve is defective or we have heavy amounts of sediment in the water supply and some form of water filtering system may need to be utilized to prevent buildup from occurring If no sediments debris are present in the valve but alarm keeps occurring replace the automatic shutoff valve...

Страница 61: ...tgomery AL 36109 1413 Printed in the USA 01 2020 Form No SVC1020T Rev 4 RHEEM WATER HEATERS 800 Interstate Park Dr Montgomery AL 36109 Website www rheem com Email Techserv Rheem com Technical Support Line Phone 800 432 8373 Fax 334 260 1341 Order Center 1 800 621 5622 ...

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