Lochinvar FVIR Use And Care Manual With Installation Instructions Download

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PROBLEM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

SLOW HOT WATER

RECOVERY

1. Insufficient combustion air

2. Water heater flue or vent system

blocked

3. Low gas pressure

4. Improper

calibration

5. Base-Ring Filter blocked with lint/

dust

6. FVIR Flame Arrestor blocked with

lint/dust.

1. Provide ventilation to water heater. Check

flue way, flue baffle, and burner

2. Clean flue, locate source and correct

3. Check with gas utility company

4. Replace

thermostat

5. Clean filter, See “External Inspection &

Cleaning of the Base-Ring Filter” section.

6. Clean filter, See “Cleaning the Combustion

Chamber and Flame-Arrestor” section.

DRIP FROM RELIEF VALVE

1. Excessive water pressure

2. Heater

stacking

3. Closed water system

1. Use a pressure reducing valve and relief

valve

2. Lower the thermostat setting

3. See “Closed System/Thermal Expansion”

THERMOSTAT FAILS TO

SHUT-OFF

1. Thermostat not functioning prop-

erly

2. Improper

calibration

1. Replace

thermostat

2. Replace

thermostat

COMBUSTION ODORS

1. Insufficient combustion air

2. Water heater flue or vent system

blocked

3. Heater installed in a confined area

4. Base-Ring Filter blocked with lint/

dust

5. FVIR Flame Arrestor blocked with

lint/dust.

1. Provide ventilation to water heater. Check

flue

way, flue baffle, and burner

2. Clean, locate source and correct

3. Provide fresh air ventilation

4. Clean filter, See “External Inspection &

Cleaning of the Base-Ring Filter” section.

5. Clean filter, See “Cleaning the Combustion

Chamber and Flame-Arrestor” section.

SMOKING AND CARBON

FORMATION (SOOTING)

1. Insufficient combustion air

2. Low gas pressure

3. Water heater flue or vent system

blocked

4. Thermostat not functioning prop-

erly

5. Heater installed in a confined area

6. Burner flame yellow-lazy

7. Base-Ring Filter blocked with lint/

dust

8. FVIR Flame Arrestor blocked with

lint/dust.

1. Provide ventilation to water heater. Check

flue way, flue baffle, burner

2. Check with gas utility company

3. Clean, locate source and correct

4. Replace

thermostat

5. Provide fresh air ventilation

6. See “Burner Flame Yellow-Lazy”

7. Clean filter, See “External Inspection &

Cleaning of the Base-Ring Filter” section.

8. Clean filter, See “Cleaning the Combustion

Chamber and Flame-Arrestor” section.

CONDENSATION

1. Temperature setting too low

1. Increase the temperature setting. Refer

to the “Condensation” sub-section of this

manual’s Troubleshooting Guide.

BURNER FLAME FLOATS

AND LIFTS OFF PORTS

1. Orifice too large

2. High gas pressure

3. Water heater flue or vent system

blocked

4. Cold

drafts

1. Replace with correct orifice

2. Check with gas utility company

3. Clean flue and burner-locate source and cor-

rect

4. Locate source and correct

BURNER FLAME TOO HIGH

1. Orifice too large

1. Replace with correct orifice

FLAME BURNS AT ORIFICE

1. Thermostat not functioning prop-

erly

2. Low gas pressure

1. Replace

thermostat

2. Check with gas utility company

PILOT FLAME

TOO SMALL

1. Pilot line or orifice clogged

2. Low gas pressure

1. Clean, locate source and correct

2. Check with gas utility company

Summary of Contents for FVIR

Page 1: ...mediately 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 Installation and service must be performed by a qualified installer service agency or the gas supplier WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal i...

Page 2: ...d Pipe Installation 17 Combination Space Heating Potable Water System 17 18 Solar Installation 18 Important Information About this Water Heater 19 Operating Your Water Heater 20 26 Lighting Instructions 20 21 Checking the Draft 22 Burner Flames 22 Emergency Shutdown 22 Water Temperature Regulation 22 23 Operating the Temperature Control System 23 Operational Conditions 23 24 Draining and Flushing ...

Page 3: ...anual Service Agency A service agency also must have ability equivalent to a licensed tradesman in the fields of plumbing air supply venting and gas supply including a thorough understanding of the requirements of the National Fuel Gas Code as it relates to the installation of gas fired water heaters The service agency must also have a thorough understanding of this instruction manual and be able ...

Page 4: ... period of non use Read instruction manual before installing using or servicing water heater Fire or Explosion Harzard Hydrogen gas can be produced in a hot water system after a period of non use generally two or more weeks Hydrogen gas is extremely flammable and can ignite To return hot water system to service open a hot water faucet in kitchen for several minutes before using electrical applianc...

Page 5: ...stat T Drain Valve U Manifold Burner Assembly V Flue W Metal Drain Pan X Piezo Igniter Y Base Ring Filter ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS TO VENT TERMINATION ON ROOF A B D F G H I W V U T S O R J K Q VACUUM RELIEF VALVE INSTALL PER LOCAL CODES INSTALL THERMAL EXPANSION TANK IF WATER HEATER IS INSTALLED IN A CLOSED WATER SYSTEM M N L E P X Y DISCHARGE PIPE DO NOT CAP OR PLUG 6 MAXI...

Page 6: ... future users of this water heater will need it for future reference Service to the FVIR System should only be performed by a qualified technician Examples of a qualified technician include licensed plumbers authorized gas company personnel and authorized service personnel IMPORTANT The manufacturer and seller of this water heater will not be liable for any damages injuries or deaths caused by fai...

Page 7: ...n the area of the water heater leave the area immediately and call the fire department from a neighbor s home Do not attempt to clean the spill until all ignition sources have been extinguished Fire or Explosion Hazard WARNING Read instruction manual before installing using or servicing water heater Improper use may result in fire or explosion Maintain required clearances to combustibles Keep comb...

Page 8: ...vice used in conjunction with a piped drain pan These devices are available from some plumbing supply wholesalers and retailers and detect and react to leakage in various ways Sensors mounted in the drain pan that trigger an alarm or turn off the incoming water to the water heater when water is detected Sensors mounted in the drain pan that turn off the water supply to the entire home when water i...

Page 9: ...o an L P gas supply Do not connect an L P gas water heater to a natural gas supply Failure to follow these instructions can result in death explosion or carbon monoxide poisoning Explosion Hazard Gas Requirements IMPORTANT Read the rating plate to be sure the water heater is made for the type of gas you will be using in your home This information will be found on the rating plate located near the ...

Page 10: ... in the occurrence of a leak in the system the gas will settle at floor level Basements crawl spaces closets and areas below ground level will serve as pockets for the accumulation of gas Before lighting an L P gas water heater smell all around the appliance at floor level If you smell gas follow the instructions as given in the warning on the front page When your L P tank runs out of fuel turn of...

Page 11: ...by a qualified technician using the installation instructions Examples of a qualified technican include gas technicians authorized gas company personel and authorized service persons Failure to so do can result in death or carbon monoxide poisoning IMPORTANT Air for combustion and ventilation must not come from a corrosive atmosphere Any failure due to corrosive elements in the atmosphere is exclu...

Page 12: ...e typical examples of each method Louvers and Grilles In calculating free area for ventilation and combustion air supply openings consideration must be given to the blocking effect of protection louvers grilles and screens These devices can reduce airflow which in turn may require larger openings to achieve the required minimum free area Screens must not be smaller than 1 4 mesh If the free area t...

Page 13: ...by CSA International this certification applies to the vent damper device only and does not mean they are certified for use on this water heater U L recognized fuel gas and carbon monoxide CO detectors are recommended in all applications and should be installed using the manufacturer s instructions and local codes rules or regulations IMPORTANT If you lack the necessary skills required to properly...

Page 14: ...ay is clear and free of obstructions The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces Also consult local and state codes for proper chimney sizing and application or in the absence of local and state codes the National Fuel Gas Code ANSI Z223 1 NFPA 54 current edition The connector must be installed above the extreme bottom of the chimney to prevent po...

Page 15: ...Closed System Thermal Expansion 5 Install a shut off valve in the cold water inlet line It should be located close to the water heater and be easily accessible Know the location of this valve and how to shut off the water to the heater 6 A temperature and pressure relief valve must be installed in the opening marked Temperature and Pressure T P Relief Valve on the water heater A discharge line mus...

Page 16: ...ay cause excessive restriction to water flow is not recommended Use only 95 5 tin antimony or other equivalent solder Any lead based solder must not be used Piping that has been treated with chromates boiler seal or other chemicals must not be used Chemicals that may contaminate the potable water supply must not be added to the piping system Closed System Thermal Expansion As water is heated it ex...

Page 17: ...ations If this water heater is to be used to supply both space heating and domestic potable drinking water the instructions listed below must be followed Be sure to follow the manual s shipped with the air handler system Temperature and Pressure Relief Valve Explosion Harzard Temperature pressure relief valve must comply with ANSI Z21 22 CSA 4 4 and ASME code Properly sized temperature pressure re...

Page 18: ... water heating appliances when used to supply potable water Some jurisdictions may require a backflow preventer in the incoming cold water line This may cause the temperature and pressure relief valve on the water heater to discharge or weep due to expansion of the heated water A diaphragm type expansion tank suitable for potable water will normally eliminate this weeping condition Please read and...

Page 19: ...at contain negative pressure producing devices such as exhaust fans fireplaces etc Is there a furnace air handler in the same room space as the water heater If so has a return air duct system been attached that exits the room If so check for leaks on the air duct system If no air duct system is present correct immediately by contacting a local Heating Ventilation Air Conditioning Refrigeration HVA...

Page 20: ...he outer door If the Pilot Does Not Light 1 Wait 10 minutes before another lighting attempt If the pilot does not light the Igniter may not be sparking or the unit may not be getting gas or for a new installation there may still be air in the gas line Each time you click the igniter button you should be able to see the spark by looking through the view port See Figure 23 You may have to darken the...

Page 21: ...chnician or your gas supplier DANGER Hotter water increases the risk of scald injury Consult the instruction manual before changing temperature Refer to the Lighting Instructions in the Installation Manual for more detailed troubleshooting information 1 Turn the gas control temperature knob counterclockwise to the OFF setting The status light will stop blinking and stay on for a short time after t...

Page 22: ... 49 C 60 C is recommended by most dishwasher manufacturers The thermostat is adjusted to the pilot position when it is shipped from the factory Water temperature can be regulated by moving the temperature dial to the preferred setting The preferred starting point is 120 F at the HOT setting Align the knob with the desired water temperature as shown in Figure 19A There is a hot water scald potentia...

Page 23: ...f the heated water may vary Operating Modes and Settings Standard Mode The controller adjusts the water heater to maintain the temperature set by the user Vacation Setting The Vacation setting VAC sets the controller at approximately 55 F This setting is recommended when the water heater is not in use for a long period of time This effectively turns the controller temperature setting down to a tem...

Page 24: ...water conditioning company to successfully eliminate all water odor problems Artificially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions The use of a water softener may decrease the life of the water heater tank The anode rod should be removed from the water heater tank every 3 years for inspection NOTE Artificially softened water...

Page 25: ...e water heater drain valve and allow all of the water to drain from the tank Flush the tank with water as needed to remove sediment 6 Close the drain valve refill the tank and restart the water heater as directed in this manual If the water heater is going to be shut down for an extended period the drain valve should be left open IMPORTANT Condensation may occur when refilling the tank and should ...

Page 26: ...nd billed accordingly When ordering replacement parts always have the following information ready 1 model serial and product number 2 type of gas 3 item number 4 parts description See Repair Parts Section for a list of available repair parts Removing the Manifold Burner Assembly 1 Turn the gas control temperature knob to the OFF position Figure 22 2 Before performing any maintenance it is importan...

Page 27: ...PILOT THERMOPILE ASSEMBLY PILOT THERMOPILE ASSEMBLY IGNITER CONNECTOR THERMAL SWITCH CONNECTORS PILOT THERMOPILE THERMOPILE CONNECTOR WHITE WIRE RED WIRE PILOT TUBE NOT SHOWN FOR CLARITY FIGURE 26 7 Route the new pilot tube igniter wire and thermopile wire through the opening in the manifold door See Figure 25 8 Using the pilot screw removed earlier attach the new pilot thermopile assembly Reattac...

Page 28: ...port if glass is missing or damaged removed Replace door gasket if damaged Failure to follow these instructions can result in death explosion or fire 1 Check the door gasket for damage or imbedded debris prior to installation Figure 28 2 Inspect the viewport for damage and replace as required Figure 23 3 Insert the new manifold burner assembly into the burner compartment making sure that the tab o...

Page 29: ...n Figure 19A 2 Turn off the gas at the manual shut off valve on the gas supply pipe Figure 3 3 Drain the water heater Refer to the section of Draining and Flushing and follow the procedure 4 Disconnect the igniter wire from the igniter lead wire Use needle nose pliers to disconnect the red and white thermopile wires Disconnect the pilot tube 7 16 wrench and manifold tube 3 4 wrench at the gas cont...

Page 30: ...Thermostat temperature limit was ex ceeded Status light will blink 4 flashes 11 Pilot line or orifice clogged 12 Non functioning thermopile 13 Air for combustion obstructed 14 FVIR Flame Arrestor blocked with lint dust 15 Flammable vapors incident FVIR function actuated 16 Base Ring Filter blocked with lint dust 1 Replace igniter pilot assembly 2 See Pilot Light Troubleshooting Flowchart section 3...

Page 31: ... section 5 Clean filter See Cleaning the Combustion Chamber and Flame Arrestor section SMOKING AND CARBON FORMATION SOOTING 1 Insufficient combustion air 2 Low gas pressure 3 Water heater flue or vent system blocked 4 Thermostat not functioning prop erly 5 Heater installed in a confined area 6 Burner flame yellow lazy 7 Base Ring Filter blocked with lint dust 8 FVIR Flame Arrestor blocked with lin...

Page 32: ... on if the return air duct is in the same location Correct size of openings to allow sufficient air NO YES YES NO Section C Pilot light will not remain lit Complete this section after completing Section B YES Set thermostat to desired temperature Section B Pilot light repeatedly goes out Check the Base Ring Filter and Flame Arrestor for blockage due to lint or dust Are both the Air Filter and Flam...

Page 33: ...e water heater has been operating but has stopped and will not re light check the flame arrestor for signs of high temperature blue or black discoloration indicating a flammable vapor incident If you suspect a flammable vapor incident has occurred do not use this appliance Immediately call a qualified technician to inspect the appliance Water heaters subjected to a flammable vapors ignition will r...

Page 34: ...rmostat 8 FLASHES This condition only appears if the gas control temperature knob has been turned off and the thermopile continued to produce electric power This condition can occur if the thermopile does not cool down as quickly as expected when the unit is shut off This condition can also occur if the gas control temperature knob has been turned off and the pilot continues to operate because the...

Page 35: ...n 1 DRAFT HOOD 2 HEAT TRAP COLD SOME MODELS 3 HEAT TRAP HOT SOME MODELS 4 COLD WATER DIP TUBE 5 ANODE ROD 6 TEMPERATURE PRESSURE RELIEF VALVE LOCATED TOP OR SIDE 7 DRAIN VALVE 8 GAS CONTROL VALVE THERMOSTAT with thermal switch wire lead 9 OUTER DOOR 10 BASE RING FILTER 11A PILOT THERMOPILEASSEMBLY KIT Natural Gas 11B PILOT THERMOPILEASSEMBLY KIT L P Gas 12A BURNER Natural Gas 12B BURNER L P Gas 13...

Page 36: ...m 12B Burner L P Gas Item 13A Manifold Burner Assembly contains the door gasket manifold tube pilot thermopile assembly manifold component block thermal switch and burner Natural Gas Low Nox Item 13B Manifold Burner Assembly contains the door gasket manifold tube pilot thermopile assembly manifold component block thermal switch and burner L P Gas Item 14 Contains manifold component block Item 15 C...

Page 37: ...37 NOTES ...

Page 38: ...38 NOTES ...

Page 39: ...39 NOTES ...

Page 40: ...40 Copyright 2011 Lochinvar LLC All rights reserved 300 Maddox Simpson Parkway Lebanon TN 37090 Phone 615 889 8900 Fax 615 547 1000 Technical Services email 2tech lochinvar com www lochinvar com ...

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