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INSTALLED IN SUITABLE AREA: To insure suffi cient  ventilation 
and combustion air supply, proper clearances from the water heater 
must be maintained.  See “Locating the New Water Heater” section.  
Combustible materials such as clothing, cleaning materials, or 
fl ammable liquids, etc. must not be placed against or adjacent to 
the water heater which can cause a fi re.

ANODE ROD INSPECTION

The anode rod is used to protect the tank from corrosion.  Most hot 
water tanks are equipped with an anode rod.  The submerged rod 
sacrifi ces itself to protect the tank.  Instead of corroding the tank, 
water ions attack and eat away the anode rod.  This does not affect 
the water’s taste or color.  The rod must be maintained to keep the 
tank in operating condition.

Anode deterioration depends on water conductivity, not necessarily 
water condition. A corroded or pitted anode rod indicates high water 
conductivity and should be checked and/or replaced more often than  
an anode rod that appears to be intact. Replacement of a depleted 
anode rod can extend the life of your water heater. Inspection should 
be conducted by a qualifi ed technician, and at a minimum should be 
checked annually after the warranty period.

TEMPERATURE-PRESSURE 
RELIEF VALVE OPERATION

                      

The temperature-pressure relief valve must be manually operated 
at least once a year.

FIGURE  22.

When checking the temperature-pressure relief valve operation, 
make sure that (1) no one is in front of or around the outlet of the 
temperature-pressure relief valve discharge line, and (2) that the 
water discharge will not cause any property damage, as the water 
may be extremely hot, see Figure 22.
If after manually operating the valve, it fails to completely reset and 

continues to release water, immediately close the cold water inlet 
to the water heater, follow the draining instructions, and replace the 
temperature-pressure relief valve with a new one.

If the temperature-pressure relief valve on the appliance weeps or 
discharges periodically, this may be due to thermal expansion.  You 
may have a check valve installed in the water line or a water meter 
with a check valve.  Consult your local water supplier or service 
agency for  further information.  Do not plug the temperature-
pressure relief valve.

DRAINING

The water heater should be drained if being shut down during 
freezing temperatures.  Also periodic draining and cleaning of 
sediment from the tank may be necessary.

1.  Set the blower switch to the “OFF” position and turn electrical 

power off to blower.

2.  Turn off the gas to the water heater at the manual gas shut-off 

valve.

3.  OPEN a nearby hot water faucet until the water is no longer 

hot. 

4.  CLOSE the cold water inlet valve.
5.  Connect a hose to the drain valve and terminate it to an adequate 

drain or external to the building.

6.  OPEN the water heater drain valve to allow all of the water to drain 

from the tank. Flush the tank with water as needed to remove 
sediment.

 

NOTE: If the water heater is going to be shut down and 
drained for an extended period, the drain valve should be 
left open with hose connected allowing water to terminate 
to an adequate drain.

7.  Close the drain valve, refi ll the tank, and restart the heater as 

directed in this manual.

8.  Follow instructions in the “Filling The Water Heater” section.

9.  Follow the lighting instructions on the label or see page 21 under  

“Lighting Instructions” to restart the water heater.

DRAIN VALVE WASHER REPLACEMENT 

(See Figure 23)

1.  Turn “OFF” gas supply to water heater.

2.  Follow “Draining” instructions.

3.  Turning counterclockwise ( 

 ), remove the hex cap below the 

screw handle. 

4.  Remove the washer and put the new one in place.

5.  Screw the handle and cap assembly back into the drain valve 

and retighten using a wrench. DO NOT OVER TIGHTEN.

6.  Follow instructions in the “Filling The Water Heater” section.

7.  Check for leaks.

Содержание RESIDENTIAL GAS WATER HEATERS

Страница 1: ...HEATER WAS PURCHASED IF YOU ARE UNSUCCESSFUL CONTACT RESIDENTIAL TECHNICAL ASSISTANCE AT 1 615 889 8900 OR VIA E MAIL AT 2TECH LOCHINVAR COM RESIDENTIAL GAS WATER HEATERS For Your Safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER GAMA certification applies to all residential gas water heaters with capacities of 20 to 100 gallons with input rating of 75 000 BTU Hr or less 300 Maddox S...

Страница 2: ...defects or other reproductive harm and requires businesses to warn of potential exposure to such substances WARNING This product contains a chemical known to the State of California to cause cancer birth defects or other reproductive harm This appliance can cause low level exposure to some of the substances included in the Act IMPORTANT DEFINITIONS Qualified Installer A qualified installer must ha...

Страница 3: ...3 GENERAL SAFETY ...

Страница 4: ...les the water heater will not operate properly It could cause DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE This manual contains instructions for the installation operation and maintenance of the gas fired water heater It also contains warnings throughout the manual that you must read and be aware of All warnings and all instructions are essential to the proper operation of the water heater a...

Страница 5: ...ntally vented gas fueled heating appli ance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless upon inspection the inspector observes carbon monoxide detectors and si...

Страница 6: ... X Gas Control Valve Thermostat Y Metal Drain Pan Z Air Intake Screen Base Pan AA Inner Door B B Outer Door CC HSI Burner Assembly D D Air Intake Screen Blower Assembly E E FV Sensor Bracket Assembly 40K 50K Models Only F F FV Sensor Bracket Assembly 55K 62 5K Models Only NATURAL HOT SURFACE IGNITER MAIN BURNER HOT SURFACE IGNITOR SENSOR PROPANE HOT SURFACE IGNITER MAIN BURNER HOT SURFACE IGNITOR ...

Страница 7: ...njured by hot water than others These include the elderly children the infirm or physically mentally handicapped If anyone using hot water in your home fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap then you must take special precautions In addition to using the lowest possible temperature setting that satisfies you...

Страница 8: ... drain pan that trigger an alarm or turn off the incoming water to the water heater when leakage is detected Sensors mounted in the metal drain pan that turn off the water supply to the entire home when water is detected in the metal drain pan Water supply shut off devices that activate based on the water pressure differential between the cold water and hot water pipes connected to the water heate...

Страница 9: ...exceeds the National Appliance Energy Conversation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary Should you choose to apply an insulation blanket to this heater you should follow these instructions For identification of components mentioned below see Figure 1 Failure to follow these instructions can restrict the air flow required fo...

Страница 10: ...oors through vertical ducts each opening shall have a minimum free area of 1 square inch per 4 000 Btu per hour 5 5 cm2 kW of total input rating of all equipment in the enclosure see Figure 8 3 When communicating with the outdoors through horizontal ducts each opening shall have a minimum free area of 1 square inch per 2 000 Btu per hour 11 cm2 kW of total input rating of all equipment in the encl...

Страница 11: ...igher than required for domestic water purposes a mixing valve must be installed Please refer to Figure 2 for suggested piping arrangement CLOSED WATER SYSTEMS Water supply systems may because of code requirements or such conditions as high line pressure among others have installed devices such as pressure reducing valves check valves and back flow preventers Devices such as these cause the water ...

Страница 12: ... Relief Valves for Hot Water Supply Systems ANSI Z21 22 CSA 4 4 and the code requirements of ASME If replaced the valve must meet the requirements of local codes but not less than a combination temperature and pressure relief valve certified as indicated in the above paragraph The valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water he...

Страница 13: ...pply line serving the water heater and A drip leg sediment trap ahead of the gas control valve to help prevent dirt and foreign materials from entering the gas control valve A flexible gas connector or a ground joint union between the shut off valve and control valve to permit servicing of the unit Be sure to check all the gas piping for leaks before lighting the water heater Use a soapy water sol...

Страница 14: ...ust flow from the hot water faucet before turning ON gas to the water heater To fill the water heater with water 1 Close the water heater drain valve by turning the handle to the right clockwise The drain valve is on the lower front of the water heater 2 Open the cold water supply valve to the water heater NOTE The cold water supply valve must be left open when the water heater is in use 3 To insu...

Страница 15: ... This powered vent heater operates on 110 120 Vac therefore a grounded outlet must be within reach of the six 6 foot 1 8 m flexible power cord supplied with the unit see Figure 1 The power cord supplied may be used only where local codes permit If local codes do not permit the use of a flexible power supply cord a Make sure the unit is unplugged from wall outlet Remove screws and open panel on fro...

Страница 16: ...ions in this manual before completing the installation and putting the water heater into service Except where instructed in this manual the mixing of 2 3 and 4 vent pipe is NOT ALLOWED If 2 pipe is to be used then a 2 to 3 bell reducer is recommended Figure 15 shows the recommended location for the bell reducer If the bell reducer is located at the rubber boot on the blower assembly then a short s...

Страница 17: ... used in between all 45 elbows and all 90 elbows 55 000 and 62 500 BTU Units NOTE The 55 000 and 62 500 BTU Units are not approved for 2 venting For 3 Venting the maximum equivalent feet of pipe allowed is 80 feet 24 4 m This does not include the supplied Vent Termination for the water heater For the 3 venting one 90 elbow is approximately equal to 5 feet 1 5 m One 45 elbow is approximately equal ...

Страница 18: ...plied for decorative purposes only and is not a requirement for the vent termination if not needed by the installer VERTICAL VENT THROUGH ROOF This unit is approved for venting through the roof with the type vent terminal that is included with the unit A proper flashing or BOOT should be used to seal the pipe where it exits the roof The total vent system should not exceed that which is specified s...

Страница 19: ...s 15 2 cm and above PRIMER It is recommended that Tetrahydrofuran THF be used to prepare the surfaces of pipe and fittings for solvent welding Do not use water rags gasoline or any other substitutes for cleaning PVC or CPVC surfaces A chemical cleaner such as MEK may be used CEMENT The cement should be a bodied cement of approximately 500 to 1600 centipoise viscosity containing 10 20 by weight vir...

Страница 20: ... to the distance and make a second mark as the primer and cement will most likely destroy your first one Apply primer to the surface of the pipe and fitting socket with a natural bristle brush This process softens and prepares the PVC or CPVC for the solvent cementing step Move quickly and without hesitation to the cementing procedure while the surfaces are still wet with primer E Application of s...

Страница 21: ...21 ...

Страница 22: ...s If a suitable area is not available a cover should be installed over the thermostat to prevent tampering The water temperature setting was factory set at the lowest temperature Pressing the COOLER button decreases temperature and pressing the HOTTER button increases the temperature Setting the water heater temperature at 120 F 49 C Approx mark on temperature setting of the gas control valve will...

Страница 23: ... expansion Contact a local plumbing service agency to have a thermal expansion tank installed STRANGE SOUNDS Possible noises due to expansion and contraction of some metal parts during periods of heat up and cool down do not necessarily represent harmful or dangerous conditions Condensation causes sizzling and popping within the burner area during heating and cooling periods and should be consider...

Страница 24: ... Viewport on the Inner Door see Figure 1 The main burner should provide complete combustion of gas ignite rapidly give reasonably quiet operation and cause no excessive flame lifting from the burner ports If the proper flame characteristics are not evident see Figure 20 make sure that the flow of combustion and ventilation air is not blocked on the Air Intake Screen at the base of the water heater...

Страница 25: ...ing instructions and replace the temperature pressure relief valve with a new one If the temperature pressure relief valve on the appliance weeps or discharges periodically this may be due to thermal expansion You may have a check valve installed in the water line or a water meter with a check valve Consult your local water supplier or service agency for further information Do not plug the tempera...

Страница 26: ...the tank Droplets form and drip onto the burner or run on the floor This is common at the time of start up after installation and when incoming water is cold I Water in the water heater bottom or on the floor may be from condensation loose connections or the relief valve DO NOT replace the water heater until a full inspection of all possible water sources is made and necessary corrective steps tak...

Страница 27: ...acket 40K 50K models only 26B FV Sensor Bracket 55K 62 5K models only 27 Nipple with Heat Trap 28 Secondary Anode with Heat Trap Not Shown Optional Now that you have purchased this water heater should a need ever exist for repair parts or service simply contact the company it was purchased from or direct from the manufacturer listed on the rating plate on the water heater Be sure to provide all pe...

Страница 28: ...nd intake air pipe direct vent products was used per the installation instructions that came with the water heater 3 Ensure the maximum number of elbows or maximum equivalent feet of vent or intake air pipe have not been exceeded per the installation instructions that came with the water heater 4 Ensure there are no obstructions in the vent or intake air pipe 5 Open igniter circuit 1 Check wiring ...

Страница 29: ...in to clear these error codes 2 Replace the gas control valve thermostat if the error code persists 14 either open or shorted 1 Turn off power to the water heater Ensure all FV sensor wiring the ignitor assembly plug and the ignitor assembly socket on the bottom of the Intelli Vent control are making good contact Repair or replace any worn damaged components that are not making good connection 2 R...

Страница 30: ...d be utilized by a qualified service agent When calling for service notify the service agent that this is a Flammable Vapor Ignition Resistant Product TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES Figure 1 and 15 Page 9 ...

Страница 31: ...31 NOTES ...

Страница 32: ...32 300 Maddox Simpson Parkway Lebanon TN 37090 Phone 615 889 8900 Fax 615 547 1000 Technical Services email 2tech lochinvar com www lochinvar com Copyright 2011 Lochinvar LLC All rights reserved ...

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