Rheem RMTG-64DV- Manuals

SVC 820-Tankless Gas Troubleshooting Manual Page | 5 5 Sequence of Operations ACTION EXPLANATION Hot water faucet is open creating a demand Hot water draw initiates water flow thru the water heater Water flows thru the Water Flow Sensor Minimum flow rate of .4 GPM to activate @ 35 o T Control Board ...

6 | Page SVC 820 Tankless Gas Troubleshooting Manual 6 YES NO Health Check 82 – Program Chip 79 – Blower Motor 71 – Gas Control Valve 76 – Remote Control 14 – OHL Open Hot Water Tap Up & Down Buttons 24: Activated > 20 Seconds Thermistors Check Blower Speed Flue Blockage Detect Flame False Fl...

SVC 820-Tankless Gas Troubleshooting Manual Page | 7 7 Flow Chart No Flame Failure 10 Warning Code Flashing 05 Warning Code Flashing Yes Yes No No Decrease of Fan Motor Ventilation Imperfect Combustion Alarm Attempt to Re-Ignite 12 Yes 1-2 Ignition Attempts Condensation Not Draining 29: Condensing O...

8 | Page SVC 820 Tankless Gas Troubleshooting Manual 8 Close Hot Water Tap Checking Blower Motor Detect Flame? Gas Control Valve Off Unit in Stand-By mode 80: Gas Control Valve 51: Gas Control Valve Yes (8 Seconds Later) 99 3 – Shutdown Sequence

SVC 820-Tankless Gas Troubleshooting Manual Page | 9 9 Error Code Code Fault Remedy No Code Flow Rate/Maintenance: Nothing Happens When Water Is Flowing Through Unit . (Control Board Displays Water Temp) 1. Increase water flow rate or set higher temperature 2. New Installations: Ensure hot and cold ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 15 15 COMPONENTS 1. Condensing ONLY: Secondary Stainless Steel Heat Exchanger 2. Condensing ONLY: Neutralizer 3. Primary Heat Exchanger 4. Flame Rod(s) 5. Sight Glass 6. Igniter Rod 7. Igniter Coil 8. Gas Control Valve 9. Water Control & Bypass ...

16 | Page SVC 820 Tankless Gas Troubleshooting Manual 16 Maintenance Mode Panel Display The Rheem Tankless has a Maintenance Mode chart on the Remote Control. To access the Maintenance Mode, turn the unit OFF at Remote Control and make sure water flow is OFF. Then hold down the UP and DOWN arrow key...

18 | Page SVC 820 Tankless Gas Troubleshooting Manual 18 CONTROL BOARD – Color Picture • Each letter indicates the connector identifier es ood. Proceed to your error code to resolve the sue. The error codes are listed in the table of ontents. M T MIN MAX ADJ

SVC 820-Tankless Gas Troubleshooting Manual Page | 19 19 CONTROL BOARD DIP #1 – Adjust max temperature; EZ Link cable DIP #2 – Adjust for altitude differential MIN & MAX – Adjust water temperature setting; gas pressure; etc. ADJ – Adjust gas pressure etc. M – Flame Rod for all models (detects fl...

22 | Page SVC 820 Tankless Gas Troubleshooting Manual 22 No Error Code & No Hot Water (Remote Control Displays Hot Water Temperature Setting) Explanation: No hot water is delivered when water is flowing through unit and Remote Control displays the hot water temperature setting. Possible Causes: ...

24 | Page SVC 820 Tankless Gas Troubleshooting Manual 24 1L - Warning Code Explanation: The Control Board has detected possible lime build-up inside the heat exchanger. To prevent permanent damage to the unit, the unit must be drained and flushed. Flushing procedures may need to be repeated for exce...

26 | Page SVC 820 Tankless Gas Troubleshooting Manual 26 05 – Warning Code Explanation: The Flame Rod has detected improper burner combustion. The unit is NOT able to maintain the proper fuel/air mixture for proper combustion. This warning code is commonly caused by VENTING and/or GAS SUPPLY. The un...

SVC 820-Tankless Gas Troubleshooting Manual Page | 29 29 10 – Warning Code Explanation: The Blower Motor is not creating enough ventilation. The system passed the pre-purge cycle, but detects vent blockage during normal operation. The unit will continue to operate but may eventually shut down with E...

30 | Page SVC 820 Tankless Gas Troubleshooting Manual 30 BLOWER MOTOR DIAGNOSTICS : Turn power OFF. Remove and reinsert connector “G” on Control Board. Attempt to operate unit again. IF 10 Warning Code does NOT display, unit had a loose connection. 1 Remove 3 screws holding Blower Motor in place. Cl...

SVC 820-Tankless Gas Troubleshooting Manual Page | 31 31 10 – Warning Code Diagnostic Chart YES NO NO YES YES NO Test DC voltage across black and red wires on connector “G”: 144 – 192 DC VOLTS Is the DC voltage OK? Remove and reinsert connector “G” at Control Board. Attempt to operate unit again. IF...

SVC 820-Tankless Gas Troubleshooting Manual Page | 33 33 11 – Error Code Explanation: This error code is commonly a result of GAS SUPPLY and/or VENTING. Flame Rod(s) does not detect flame. This Is caused by the following: Inadequate GAS SUPPLY; Inadequate VENTING; Igniter Rod NOT sparking; Build-up ...

34 | Page SVC 820 Tankless Gas Troubleshooting Manual 34 IGNITER ROD DIAGNOSTICS: (spark is NOT visible) Turn power OFF. Remove and reinsert connector “H” on Control Board. 1 Remove and reinsert Igniter Coil cable on Igniter Rod. Turn power ON. Remove and reinsert white Molex connector at Igniter Co...

SVC 820-Tankless Gas Troubleshooting Manual Page | 35 35 IGNITER ROD Diagnostic Chart YES NO NO Check AC Volts across 2 grey wires on connector “H” while unit is attempting to ignite: 108 – 132 Volts AC Attempt to operate unit again. IF Igniter Rod does not spark and unit malfunctions due to Error C...

38 | Page SVC 820 Tankless Gas Troubleshooting Manual 38 GAS CONTROL VALVE DIAGNOSTICS: (Igniter Rod DOES spark & NO flame) Turn power OFF. Remove and reinsert connector “K” on Control Board. 1 Locate PGFR valve on lower right of unit. Remove and reinsert Molex connector with red wire and Molex ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 39 39 GAS CONTROL VALVE Diagnostic Chart NO YES YES NO While unit is attempting to ignite, check DC voltage across red wire #1 and black wire #2 on connector “R”: 1.5 – 14 DC VOLTS Is the DC voltage OK? Attempt to operate unit again. IF the unit mal...

SVC 820-Tankless Gas Troubleshooting Manual Page | 41 41 CONTROL BOARD Diagnostic Chart NO NO NO NO NO YES Measure DC voltage across black wire #6 and yellow wire #1 on connector “K”: 90 – 120 DC Volts Is the voltage OK? Measure DC voltage across black wire #6 and red wire #5 on connector “K”: 90 – ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 43 43 12 – Error Code Explanation: Commonly a result of inadequate GAS SUPPLY. Unit detected the presence of flame then Flame Rod lost flame recognition. First Check: *GAS SUPPLY & VENTING* Diagnostic Checks: • GAS SUPPLY & VENTING • Flame R...

SVC 820-Tankless Gas Troubleshooting Manual Page | 47 47 13 – Error Code Explanation: Indoor units ONLY. Flame Rod 2 (FL #2) is detecting poor combustion. This is commonly caused by inadequate or improperly installed VENTING (venting includes fresh air intake and exhaust). Other possible causes: Poo...

50 | Page SVC 820 Tankless Gas Troubleshooting Manual 50 14 – Error Code Explanation: Mid & High Efficiency: Over Heat Limiter (OHL) malfunction. High Efficiency ONLY: Over heat condition in the venting has triggered the Over Temp Limit Switch Diagnostic Checks: • Mid & High Efficiency: OHL ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 51 51 14 – Error Code Diagnostic Chart NO High Efficiency ONLY: Check for continuity across the Over Temp Switch Turn power OFF and remove Molex connector “U”. Measure resistance between both white wires: 50K – 500K Ohms The OHL has activated due to...

SVC 820-Tankless Gas Troubleshooting Manual Page | 53 53 15 – Error Code Explanation: The hot water temperature and/or heat exchanger temperature reached 207 degrees F for more than 15 seconds. IMPORTANT: Inadequate GAS SUPPLY and/or VENTING will create hot spots in the heat exchanger. Diagnostic Ch...

54 | Page SVC 820 Tankless Gas Troubleshooting Manual 54 16 – Error Code Explanation: Outlet water temperature is too hot. The water temperature is above the set point on Remote Control. Check the Outlet Thermistor FIRST. Diagnostic Checks: 1. Outlet Thermistor 2. Water Bypass Valve OUTLET THERMISTO...

SVC 820-Tankless Gas Troubleshooting Manual Page | 55 55 16 – Error Code Diagnostic Chart Check the resistance across 2 black wires on bottom Molex: 7k – 23K Ohms Clean Outlet Thermistor. Retest Thermistor. IF tests OK, the water heater appears to be normal, attempt to operate unit again. IF resista...

56 | Page SVC 820 Tankless Gas Troubleshooting Manual 56 24 – Error Code Explanation: Remote Control buttons were depressed for more than 20 seconds. IF you were manually holding down any Remote Control buttons for more than 20 seconds, release the buttons and NO Error Code will be displayed. Unit w...

SVC 820-Tankless Gas Troubleshooting Manual Page | 57 57 24 – Error Code Diagnostic Chart YES NO Unplug unit and remove Remote Control wires from wiring terminals on bottom of unit. Use a new short piece of wire to connect the Remote Control directly to the Remote Control Wiring Terminals located at...

SVC 820-Tankless Gas Troubleshooting Manual Page | 59 59 29 – Error Code Explanation: High Efficiency Condensing Units ONLY: Condensate Drain is NOT draining. Diagnostic Checks: • Plug not removed from condensate drain • Pinch in condensate drain line • Blockage in condensate drain line • Drain line...

60 | Page SVC 820 Tankless Gas Troubleshooting Manual 60 31 – Error Code Explanation: Inlet Thermistor malfunction Diagnostic Checks: • Inlet Thermistor INLET THERMISTOR DIAGNOSTICS: Turn power OFF. Remove 3 screws for Control Board mounting bracket. Remove connectors “M”, “T” & “G”. Pull Contro...

SVC 820-Tankless Gas Troubleshooting Manual Page | 61 61 31 – Error Code Diagnostic Chart NO NO Check the resistance across 2 white wires on bottom Molex: 7K – 23K Ohms Clean scale build-up on Inlet Thermistor. Retest Thermistor. IF tests OK, the water heater appears to be normal. Attempt to operate...

62 | Page SVC 820 Tankless Gas Troubleshooting Manual 62 32 – Error Code Explanation: Heat Exchanger Thermistor malfunction Diagnostic Checks: • Heat Exchanger Thermistor HEAT EXHCANGER THERMISTOR DIAGNOSTICS: Turn power OFF. Remove 3 screws for Control Board mounting bracket. Remove connectors “M”,...

SVC 820-Tankless Gas Troubleshooting Manual Page | 63 63 32 – Error Code Diagnostic Chart Check the resistance across 2 white wires on bottom Molex: 7k – 23K Ohms Replace wiring harness for Connector “R” on Control Board Clean Scale Build-Up on Heat Exchanger Thermistor. Retest Thermistor. IF test O...

64 | Page SVC 820 Tankless Gas Troubleshooting Manual 64 33 – Error Code Explanation: Outlet Thermistor malfunction Diagnostic Checks: • Outlet Thermistor OUTLET THERMISTOR DIAGNOSTICS: Turn power OFF. Remove 3 screws for Control Board mounting bracket. Remove connectors “M”, “T” & “G”. Pull Con...

SVC 820-Tankless Gas Troubleshooting Manual Page | 65 65 33 – Error Code Diagnostic Chart Check the resistance across 2 black wires on bottom Molex: 7k – 23K Ohms Clean Scale Build-Up on Outlet Thermistor. Retest Thermistor. IF tests OK, the water heater appears to be normal. Attempt to operate unit...

66 | Page SVC 820 Tankless Gas Troubleshooting Manual 66 34 – Error Code Explanation: Ambient Thermistor malfunction Diagnostic Checks: • Ambient Thermistor AMBIENT THERMISTOR DIAGNOSTICS: Turn power OFF. Remove 3 screws for Control Board mounting bracket. Remove connectors “M”, “T” & “G”. Pull ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 67 67 34 – Error Code Diagnostic Chart Check the resistance across 2 black wires on bottom Molex: Refer to Data Table below Replace wiring harness for Connector “R” on Control Board Clean Ambient Thermistor. Retest Thermistor. IF tests OK, the water...

68 | Page SVC 820 Tankless Gas Troubleshooting Manual 68 35 – Error Code Explanation: Improper Thermistor connection. Unit has four Thermistors; one or more possibly has a poor connection or not connected in proper location. Diagnostic Checks: • Inlet, Heat Exchanger, Outlet, and Ambient Thermistors...

SVC 820-Tankless Gas Troubleshooting Manual Page | 69 69 35 – Error Code Diagnostic Chart Check resistance for all Thermistors at Molex Connector “R” NO YES YES NO Is the resistance for all Thermistors OK? Go to appropriate Sensor Error Code to diagnose: 1. Inlet: Error Code 31 2. Heat Exchanger: Er...

70 | Page SVC 820 Tankless Gas Troubleshooting Manual 70 51 – Error Code Explanation: Gas Control Valve malfunction. The unit detects the presence of flame when the demand for hot water is terminated and burner is OFF. This error code will only occur at time of shut down. Diagnostic Checks: • Flame ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 71 71 51 – Error Code Diagnostic Chart NO Clean or Replace Flame Rod(s) Water heater appears to be normal. Attempt to operate unit again YES NO YES NO While viewing burner chamber through sight glass: In 10 second intervals; cycle the water heater 3...

72 | Page SVC 820 Tankless Gas Troubleshooting Manual 72 52 – Error Code Explanation: PGFR (Proportional Gas Flow Regulator) malfunction. The PGFR is the only modulating valve in the Gas Control Valve. Diagnostic Checks: • PGFR PGFR DIAGNOSTICS: Locate PGFR valve on lower right of unit. Remove and r...

SVC 820-Tankless Gas Troubleshooting Manual Page | 73 73 52 – Error Code Diagnostic Chart NO YES YES NO While unit is attempting to go to main burner, check DC voltage across red wire #1 and black wire #2 on Connector “R”: 1.5 – 14 DC VOLTS Is the DC voltage OK? Attempt to operate unit again. If the...

74 | Page SVC 820 Tankless Gas Troubleshooting Manual 74 61 – Error Code Explanation: Blower Motor malfunction. Blower Motor speed was not appropriate to allow proper combustion. Diagnostic Checks: • Blower Motor BLOWER MOTOR DIAGNOSTICS : Locate Min & Max buttons on Control Board. Continue to d...

SVC 820-Tankless Gas Troubleshooting Manual Page | 75 75 61 – Error Code Diagnostic Chart YES NO NO YES YES NO Test DC voltage across black and red wires on Molex connector “G”: 144 – 192 DC VOLTS Is the DC voltage OK? Remove and reinsert connector “G”. Attempt to operate unit again. If the unit mal...

76 | Page SVC 820 Tankless Gas Troubleshooting Manual 76 65 – Error Code Explanation: Water Control Valve malfunction Diagnostic Checks: • Water Control Valve WATER CONTROL VALVE DIAGNOSTICS: Turn power OFF. Remove 3 screws for Control Board mounting bracket. Remove connectors “M”; “T” & “G”. Pu...

SVC 820-Tankless Gas Troubleshooting Manual Page | 77 77 65 – Error Code Diagnostic Chart YES NO YES YES NO While water is flowing and unit is attempting to ignite; check DC Voltage across White & Black Wires at connector “C”: 8 – 16 DC VOLTS Is the DC voltage OK? Attempt to operate unit again. ...

78 | Page SVC 820 Tankless Gas Troubleshooting Manual 78 66 – Error Code Explanation: Water Bypass Valve malfunction. Hot outlet water temperature is above or below set point on Remote Control. Diagnostic Checks: • Water Bypass Valve WATER BYPASS VALVE DIAGNOSTICS: • Turn power OFF. Remove 3 screws ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 79 79 66 – Error Code Diagnostic Chart NO YES YES NO Turn Remote Control OFF; unplug unit and then ON again. Check DC voltage across red and black wires on Molex connector “B”: 8 – 16 DC VOLTS Is the DC voltage OK? Attempt to operate unit again. If ...

80 | Page SVC 820 Tankless Gas Troubleshooting Manual 80 71 – Error Code Explanation: Gas Control Valve malfunction Diagnostic Checks: Gas Control Valve GAS CONTROL VALVE DIAGNOSTICS: Turn power OFF. Remove and reinsert connector “K” on Control Board. Attempt to operate unit again. IF 71 Error Code ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 81 81 71 – Error Code Diagnostic Chart YES NO While unit is attempting to go to ignite, check DC voltage across yellow and black wires on Molex connector “K”: 75 – 100 DC VOLTS Is the DC voltage OK? Attempt to operate again. If the unit malfunctions...

82 | Page SVC 820 Tankless Gas Troubleshooting Manual 82 72 – Error Code Explanation: Flame Rod(s) malfunction. Flame Rod(s) is detecting the presence of flame BEFORE igniter is activated. Diagnostic Checks: • Flame Rod(s) • Gas Control Valve FLAME ROD(s) & GAS CONTROL VALVE DIAGNOSTICS: Remove ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 83 83 72 – Error Code Diagnostic Chart NO Clean or Replace Flame Rod(s) Water heater appears to be normal. Attempt to operate again YES NO YES NO Turn power OFF. Unplug unit and plug back in. Turn power ON. While viewing burner chamber through sight...

84 | Page SVC 820 Tankless Gas Troubleshooting Manual 84 76 – Error Code Explanation: Communication Fault with Remote Control. Remote Control is not communicating with Control Board Diagnostic Checks: • Remote Control • Wiring REMOTE THERMOSTAT DIAGNOSTICS : Visually inspect Remote Control wiring fo...

SVC 820-Tankless Gas Troubleshooting Manual Page | 85 85 76 – Error Code Diagnostic Chart NO YES YES NO Unplug unit and remove Remote Thermostat wires from wiring terminals on bottom of unit. Plug unit in and open a hot water source. Did the unit go to main burner? Attempt to operate unit again. If ...

86 | Page SVC 820 Tankless Gas Troubleshooting Manual 86 79 – Error Code Explanation: Blower Motor current fault. The unit detected a fault with the Blower Motor. Diagnostic Checks: • Blower Motor BLOWER MOTOR DIAGNOSTICS : Locate Min & Max buttons on Control Board. Continue to diagnostic chart ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 87 87 79 – Error Code Diagnostic Chart YES NO NO YES YES NO Test DC voltage across black and red wires on Molex connector “G”: 144 – 192 DC VOLTS Is the DC voltage OK? Remove and reinsert connector “G”. Attempt to operate unit again. IF the unit mal...

88 | Page SVC 820 Tankless Gas Troubleshooting Manual 88 80 – Error Code Explanation: Gas Control Valve malfunction. The unit detects the presence of flame when the demand for hot water is terminated and burner is OFF. This error code will only occur at time of shut down. Diagnostic Checks: • Flame ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 89 89 80 – Error Code Diagnostic Chart NO Clean or Replace Flame Rod(s) Water heater appears to be normal. Attempt to operate again YES NO YES NO While viewing burner chamber through sight glass: In 10 second intervals; cycle the water heater 3 time...

90 | Page SVC 820 Tankless Gas Troubleshooting Manual 90 82 – Error Code Explanation: Control Board Program Chip malfunction Diagnostic Checks: • Program Chip PROGRAM CHIP DIAGNOSTICS: Turn power OFF. Verify you have a Program Chip inserted in connector “A”. 1 Remove and reinsert Program Chip. Attem...

SVC 820-Tankless Gas Troubleshooting Manual Page | 91 91 90 – Error Code Explanation: The unit detected blockage in the venting during pre-purge cycle. This Error Code will occur BEFORE unit goes to ignition. Possible Causes: • VENTING VENTING: **REFER TO USE & CARE MANUAL** Visually inspect ven...

92 | Page SVC 820 Tankless Gas Troubleshooting Manual 92 92 – Error Code Explanation: High Efficiency Condensing Units ONLY. This is a warning code and unit will continue to operate but will eventually shut down due to an error code 93. REPLACE NEUTRALIZER ASAP. * Once Neutralizer is replaced; follo...

SVC 820-Tankless Gas Troubleshooting Manual Page | 93 93 99 – Error Code Explanation: The unit detected blockage in the venting during post-purge cycle. Blockage was detected when the demand for hot water terminated and burner was OFF. This error code will only occur at time of shut down. *Unit must...

94 | Page SVC 820 Tankless Gas Troubleshooting Manual 94 Diagnostic Points on Printed Circuit Board Measurement Point Normal Value What you are checking? Connection Wire Color I – J AC 108 – 132V Do you have power to the control board? U W1 – W2 50K Ω – 500K Ω Is the Over Heat Film Wrap OK? S BR1 – ...

SVC 820-Tankless Gas Troubleshooting Manual Page | 97 97 Inlet, Outlet, & Heat Exchanger Thermistor – All Models (°C) (°F) (kΩ) (V) (°C) (°F) (kΩ) (V) (°C) (°F) (kΩ) (V) -25 -13.00 87.7437 4.746 20 68.00 10.3839 3.442 65 149.00 2.1687 1.579 -24 -11.20 82.9816 4.732 21 69.80 9.9767 3.399 66 150.8...

98 | Page SVC 820 Tankless Gas Troubleshooting Manual 98 Ambient Thermistor – RTG64X; RTG84X; RTG95X; RTGH95X; RTGH95DV (°C) (°F) (kΩ) (V) (°C) (°F) (kΩ) （ V ） (°C) (°F) (kΩ) （ V ） -25 -13.00 72.1585 4.694 20 68.00 6.2677 2.857 65 149.00 1.0432 0.908 -24 -11.20 67.6926 4.675 21 69.80 5.9870 2.801 66...

5 Both  LP  and  natural  gas  have  an  odorant  added  to  aid  in  detecting  a  gas  leak.  Some     people  may  not  physically  be  able  to  smell  or  recognize  this  odorant.  If  you  are  unsure  or   unfamiliar  with  the  smell  of  LP  or  natural  gas,  ask  the  gas  supplier.  Oth...

6 IMPORTANT  SAFETY  INFORMATION READ  ALL  INSTRUCTIONS  BEFORE  USING. ! WARNING! For  your  safety,  the  information  in  this  manual  must  be  followed  to  minimize  the  risk    of  fire  or  explosion,  electric  shock,  or  to  prevent  property  damage,  personal  injury  or    loss  of ...

7 Installing  the  water  heater  : This  water  heater  must  be  installed  in  accordance  with  these  instructions,  local  codes,  utility  company   requirements  and/or  in  the  absence  of  local  codes,  use  the  latest  edition  of  the  American  National  Standard/ National  Fuel  Gas...

Installing  the  water  heater: Corrosive  Atmospheres The  air  in  beauty  shops,  dry  cleaning  establishments,  photo  processing  labs,    and  storage  areas  for  liquid  and  powdered  bleaches  or  swimming  pool  chemicals  often  contains  such  halogenated  hydrocarbons  and/or  corrosi...

The  water  heater  must  be  installed  with  a  3”/5”  diameter  UL  approved  Category  III  Concentric  Stainless   Steel  appliance  concentric  vent  pipe  or  Rheem  approved  concentric  vent  pipe. Venting The  installation  of  venting  must  comply     with  national  codes,  local  codes...

Installing  the  water  heater: Venting  Through  Closed  Spaces Follow  local  codes  and  vent  manufacturer’s  installation  instructions. For  maintenance  and  inspection  purposes  two  (2)  inspection  access  panels  large  enough  to  allow  access  for  venting  inspection  may  be  requir...

D V V E FIXEDCLOS ED OPE RABL E OPE RAB LE FIXE D CLOS ED v v B L F C B v v v X B B B A J B I H X v M K v G A The  following  information  should  be  used  for  determining  the  proper  location  of  the  vent  terminal  for  direct  vent  tankless  water  heaters. V VENT TERMINAL X AIR SUPPLY INL...

Installing  the  water  heater: Additional  Considerations     Do  NOT  install  vent  terminal  under  any  patio  or  deck.    To  help  prevent  moisture  from  freezing  on  walls  and  under   eaves,  do  not  locate  vent  terminal  on  the  side  of  a  build  ing  with   prevailing  winter  ...

Example  A:  Typical  Horizontal  Termination   w/  1/4”  per  foot  DOWNWARD  Slope 13 Installing  the  water  heater: 94° Elbow Wall Plate Water Heater Horizontal Vent Termination Exterior Wall Interior Wall Condensate Drain Line Connection Mounting Brackets Side View Caulk for Weather Seal Side  ...

Installing  the  water  heater: Vertical  Vent  Installation A  fire  stop  plate  should  be  installed  at  every   penetration  of  a  floor  or  ceiling  if  the  vent  is   not  running  in  a  fire-­rated  shaft.  Maintain  the   required  air  space  clearance  to  combustible   materials  an...

Water  Supply  Connections IMPORTANT:  Do  not   apply  heat  to  the  HOT  or   COLD  water  connections.  If   sweat  connections  are  used,   sweat  tubing  to  adapter   before  fitting  adapter  to   the    water  connections  on   heater.  Any  heat  applied   to  the  water  supply  fittings...

Installing  the  water  heater: Water  Supply  Connections,  continued Notice:  If  the  water  flow  resistance  of  a   shower  head  is  too  high,  the  burner  in  the  water  heater  will  fail  to  ignite.  Keep  the  shower  head  clean  from  debris  that  could  cause  additional  pressure...

Relief  Valve A  new  pressure  relief  valve,  complying    with  the  Standard  for  Relief  Valves  and  Automatic  Gas  Shut-­Off  Devices  for  Hot  Water  Supply  Systems,  ANSI  Z21.22/  CSA  4.4,  must  be  installed  at  the  hot  water  outlet  connection  of  the  water  heater  at  the  ...

This  water  heater  is  certified  for  installations   up  to  3,280  feet  (1000  m)  above  sea  level.   The  input  rating  of  this  water  heater  is  based   on  sea  level  operation.  At  higher  elevations,   the  actual  input  rate  may  be  lower  than  the   value  listed  on  the  r...

Remote  Control  Installation One  (1)  remote  control  is  provided  with  the   water  heater.  Additional  remote  controls  may   be  purchased  separately.  Up  to  three  (3)  remote   controls  can  be  used  with  this  water  heater. The  following  are  considerations  for   determining  ...

20 Installing  the  Main  Remote  Control: WARNING:  Field  wiring  connections  and  electrical  grounding  must  comply  with  local  codes,  or   in  the  absence  of  local  codes,  with  the  latest  edition  of  the  National  Electrical  Code,  ANSI/NFPA  70,   or  in  Canada,  Canadian  Elec...

Electrical  Connection POWER  CORD: ●    The  electric  power  supply  requirement  for  this  water  heater  is  120  VAC/60HZ,    2  Amps. ●    The  water  heater  comes  with  a  three  (3)  pin  power  supply  cord.  Use  only  a  power  outlet  with  a  ground  terminal. ●    The  installation ...

22 Installing  the  water  heater: Typical  Installation  of  Water  Heater     (Venting  Required)   Wall Plate Outside Wall With Protective Vent Termination Screen 94° Elbow Vent Adapter Power Supply Cord 1/4” Per Foot Downward Pitch To Hot Water Faucet(s) ReliefVa lve Union Drain Valve Cold Water...

Installing  the  water  heater: A.   Indoor  Water  Heater  Location ❑ Close  to  area  of  vent  termination. ❑ Indoors  and  protected  from  freezing  temperatures. ❑ Proper  clearance  from  combustible  surfaces  observed. ❑ Sufficient  fresh  air  supply  for  proper  operation  of  water  hea...

25 Lighting  the  water  heater:   Before  operating  this  water  heater,  be  sure  to  read  and  follow  the  instructions  on  the  label  pictured  below     and  all  other  labels  on  the  water  heater,  as  well  as  the  warnings  printed  in  this  manual.  Failure  to  do  so  can   re...

Time/Temperature  Relationship  in  Scalds   Water  Temperature   Time  To  Produce  a  Serious  Burn   120°F  (49°C)   More  than  5  minutes   125°F  (52°C)   1 1 / 2  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 ...

27 Water  Temperature  Setting… Maximum  water  temperature  occurs  while    the  burner  is  on.  To  determine  the  water  temperature,  turn  on  a  hot  water  faucet  and  place  a  thermometer  in  the  water  stream.  Water  temperature  at  the  faucet  may  vary  depending  on  season  an...

Care  and  cleaning  of  the  water  heater: Housekeeping Before  performing  Housekeeping  tasks  to  this  water  heater,  turn  the  unit  off  and  disconnect  the  power  supply. Vacuum  around  the  water  heater  for  dust,  dirt  and  lint  on  a  regular  basis.   Clean  the  water  heater ...

Draining  the  Water  Heater Below  are  instructions  for  draining  water  out  of  the  water  heater.     Turn  off  the  switch  on  the  remote  control.    Close  the  gas  shut-­off  valve(s).    Unplug  the  power  supply  cord  (or   disconnect  breaker)  at  least  10  seconds  after  ste...

31 Before  You  Call  For  Service… Troubleshooting  Tips  Save  time  and  money!  Review  the  charts  on  the  following  pages  first  and  you  may  not  need  to  call  for  service. CAUTION:  For  your  safety,  DO  NOT  attempt  repair  of  electrical  wiring,  gas  piping,  remote  control,...

Error  Code  Guide: When  an  error  code  is  displayed: ●     Close  the  hot  water  faucet,  turn  off  the  switch  on  the  remote   control. ●     Wait  for  about  5  minutes  before  turning  the  switch  on   again. ●     Open  the  hot  water  faucet. If  the  error  code  remains  in  th...

33 Replacement  Parts: Direct  Vent  Water  Heater Instructions  For  Placing  a  Parts  Order All  parts  orders  should  include:       The  model  and  serial  number  of  the  water  heater  from  the  rating  plate.      Specify  type  of  gas  (natural  or  LP)  as  marked  on  the  rating  pl...

  Required  adjustment  for  up  to  140°F  (60°C)  water   temperature  settings  for  Residential  product  or  185°   (85°  C). ! WARNING:   Refer  to  scald  potential  warnings  on   page  4  before  making  adjustment.  Changing  this   setting  is  done  at  your  own  risk. DO  NOT  execute ...

35 The  content  on  this  page  is  intended  for  use  by  qualified     installation/service  personnel  ONLY. WARNING:  Improper  adjustment,  altera-­ tion,  service  or  maintenance  can  cause  prop-­erty  damage,  personal  injury,  or  death. Minimum  Temperature  Adjustment  by  the  Main ...

36 IF  YOU  NEED  SERVICE 1.    Should  you  have  any  questions  about  your  new  water  heater,  or  if  it  requires  adjustment,  repair,     or  routine  maintenance,  it  is  suggested  that  you  first  contact  your  installer,  plumbing  contractor  or  previously  agreed  upon  service  ...