Lochinvar RESIDENTIAL GAS WATER HEATERS Instruction Manual
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Lochinvar RESIDENTIAL GAS WATER HEATERS Instruction Manual

Water heaters
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300 Maddox Simpson Parkway
Lebanon, TN 37090
Phone: 615-889-8900 • Fax: 615-547-1000
Technical Services email: 2tech@lochinvar.com
www.lochinvar.com
LOW LEAD
COMPLIANT
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED.
IF YOU ARE UNSUCCESSFUL, CONTACT RESIDENTIAL TECHNICAL ASSISTANCE AT 1-615-889-8900 OR VIA E-MAIL AT 2TECH@LOCHINVAR.COM.
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
PRINTED 0911
RESIDENTIAL GAS WATER HEATERS
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.
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER VENTED GAS MODELS WITH HOT SURFACE IGNITION
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
•
AN ODORANT IS ADDED TO THE GAS USED
1

Instruction Manual

For Your Safety

BY THIS WATER HEATER.
•
322830-000

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Summary of Contents for Lochinvar RESIDENTIAL GAS WATER HEATERS

  • Page 1: Instruction Manual

    ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, CONTACT RESIDENTIAL TECHNICAL ASSISTANCE AT 1-615-889-8900 OR VIA E-MAIL AT 2TECH@LOCHINVAR.COM. KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.

  • Page 2: Safe Installation, Use And Service

    SAFE INSTALLATION, USE AND SERVICE Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard.

  • Page 3: General Safety

    GENERAL SAFETY...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE......2 FOR YOUR INFORMATION ...........23 GENERAL SAFETY..............3 Start Up Conditions ............23 TABLE OF CONTENTS ............4 Condensate..............23 INTRODUCTION ..............4 Smoke/Odor ..............23 Preparing for the New Installation ........4 Thermal Expansion ............23 INSTALLATION REQUIREMENTS FOR THE Strange Sounds ..............23 COMMONWEALTH OF MASSACHUSETTS ......5 Operational Conditions ...........23...

  • Page 5: Installation Requirements For The Commonwealth Of Massachusetts

    INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above fi...

  • Page 6: Typical Installation

    TYPICAL INSTALLATION GET TO KNOW YOUR WATER HEATER - GAS MODELS A Vent Pipe–Exhaust N Flue Air Intake Screen - Base Pan B Vent Terminal O Flue Baffl e Assembly** Inner Door C Vent Adapter-Rubber Boot P Insulation Outer Door D Blower Assembly Q Control Harness HSI Burner Assembly...
  • Page 7 TYPICAL INSTALLATION MIXING VALVE USAGE NON-SCALD MIXING VALVE METAL DRAIN PAN FIGURE 2. This appliance has been design certifi ed as complying with American HOTTER WATER CAN SCALD: National Standard/CSA Standard for water heaters and is considered suitable for: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish Water (Potable) Heating and Space Heating: All models are considered suitable for water (potable) heating and space heating.

  • Page 8: Locating The New Water Heater

    LOCATING THE NEW WATER HEATER FACTS TO CONSIDER ABOUT THE LOCATION Carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance.

  • Page 9: Insulation Blankets

    and 12" (30.5 cm) from the top. (Standard clearance.) If clearances chlorine based chemicals, refrigerants, etc.) in addition to being highly stated on the heater differ from standard clearances, install water fl ammable in many cases, will also react to form corrosive hydrochloric heater according to clearances stated on the heater.
  • Page 10 Chemical vapor corrosion of the fl ue, blower assembly and vent system may occur if air for combustion contains certain chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals are typical compounds which are potentially corrosive.

  • Page 11: Installing The Water Heater

    INSTALLING THE NEW WATER HEATER WATER PIPING THERMAL EXPANSION As water is heated, it expands (thermal expansion). In a closed system the volume of water will grow. As the volume of water grows there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage).

  • Page 12: Temperature-Pressure Relief Valve

    Figure 10 shows the typical attachment of the water piping to the This heater is provided with a properly certified combination water heater. The water heater is equipped with 3/4 inch NPT water temperature - pressure relief valve by the manufacturer. connections.

  • Page 13: Gas Piping

    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 fl exible gas connector or a ground joint union between the shut off valve and control valve to permit servicing of the unit.

  • Page 14: Sediment Traps

    FIGURE 12. GAS PIPING WITH FLEXIBLE CONNECTOR. FIGURE 14. FIGURE 13. GAS PIPING WITH ALL FILLING THE WATER HEATER BLACK IRON PIPE TO GAS CONTROL VALVE. SEDIMENT TRAPS Never use this water heater unless it is completely full of water. To prevent damage to the tank, the tank must be fi...
  • Page 15 DIAGRAM 1 5. Make sure the ON/OFF switch is in the OFF position and that the outer 8. Do not plug in power cord until vent system is completely installed. This harness is connected from the blower control box to the connector powered vent heater operates on 110-120 Vac, therefore a grounded on the bottom side of the gas control valve.

  • Page 16: Vent Pipe Connection To Blower Assembly

    VENT CONNECTIONS TO BLOWER ASSEMBLY the joints between elbows and other fi ttings and the straight runs of vent pipe. Check the system for signs of sagging or other stresses Figure 15 shows the optimal placement of the 2" to 3" or 3" to in the joints as a result of misalignment of any components in the 4"...
  • Page 17 MAXIMUM AND MINIMUM VENT LENGTHS 40,000 BTU Units: For 2" Venting, the maximum equivalent feet of pipe allowed is 40 feet (12.2 m). This does not include the supplied vent termination for the water heater. For the 2" venting, one 90° elbow is approximately equal to 5 feet (1.5 m).
  • Page 18 FIGURE 16. VERTICAL VENT TERMINATION RESTRICTIONS This unit can vent through 2", 3" or 4" nonmetallic pipe and fi ttings. The vent pipe installation can be started from either the blower 1. Minimum of twelve 12" (30.5 cm) above the roof or twelve 12" discharge or the termination wall.
  • Page 19 VENT PIPE PREPARATION PRIMER It is recommended that Tetrahydrofuran (THF) be used to prepare the 1. INITIAL PREPARATION surfaces of pipe and fi ttings for solvent welding. Do not use water, rags, gasoline or any other substitutes for cleaning PVC or CPVC Make sure the solvent cement you are planning to use is surfaces.
  • Page 20 STEP A B. Deburring Use a knife, plastic pipe deburring tool, or fi le to remove burrs STEP E from the end of small diameter pipe. Be sure to remove all burrs from around the inside as well as the outside of the pipe. A slight chamfer (bevel) of about 10°-15°...

  • Page 22: Temperature Regulation

    TEMPERATURE REGULATION control has a tamper resistant feature for changing the temperature Due to the nature of the typical gas water heater, the water temperature setting. To change the temperature setting follow these instructions: in certain situations may vary up to 30°F (16.7°C) higher or lower at the point of use such as, bathtubs, showers, sink, etc.

  • Page 23: For Your Information

    FOR YOUR INFORMATION START UP CONDITIONS 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 CONDENSATE harmful or dangerous conditions. Whenever the water heater is fi lled with cold water, some condensate will form while the burner is on.

  • Page 24: Periodic Maintenance

    PERIODIC MAINTENANCE VENTING SYSTEM INSPECTION proper combustion. A visual inspection of the main burner and HSI igniter assembly should also be done at least once a year, see Figure Soot build-up indicates a problem that requires correction before further use. Turn “OFF” gas to water heater and leave off until repairs are made, because failure to correct the cause of the sooting can result in a fi...

  • Page 25: Anode Rod Inspection

    continues to release water, immediately close the cold water inlet INSTALLED IN SUITABLE AREA: To insure suffi cient ventilation to the water heater, follow the draining instructions, and replace the and combustion air supply, proper clearances from the water heater temperature-pressure relief valve with a new one.

  • Page 26: Service

    SERVICE 8. Follow the lighting instructions in the “Lighting” section to restart the water heater. If a condition persists or you are uncertain about the operation of the water heater contact a service agency. Use this guide to check a “Leaking” water heater. Many suspected “Leakers”...

  • Page 27: Repair Parts

    REPAIR PARTS LIST Key No. Part Description Burner Assembly Burner Head Burner Orifi ce Burner Tube HSI Ignition Assembly Inner Door Inner Door Gasket Flue Baffl e Flue Restrictor Blower Assembly Air Intake Screen - Base Pan Inlet Tube Gas Control Valve Thermostat Drain Valve Drain Valve Washer Outer Door (may appear different than shown)

  • Page 28: Troubleshooting

    TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualifi ed service technician. Read the GENERAL SAFETY INFORMATION section fi rst. 1 Ensure the wall outlet (power supply) is properly grounded.
  • Page 29 1 Turn the power off for 10-20 seconds, then on again to Self diagnostic check has detected clear these error codes. a problem with the gas valve driver circuit, internal microprocessor, or 2 If any of these error codes persist or cannot be cleared, other internal circuits.

  • Page 30: Troubleshooting

    TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualifi ed service agent. When calling for service notify the service agent that this is a “Flammable Vapor Ignition Resistant” Product. Figure 1 and 15. Page 9.

  • Page 31: Warranty

    NOTES...
  • Page 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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