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Residential-Duty Commercial
Residential-Duty Commercial Water Heater
NEW STANDARDS IN WATER HEATING
MODELS:
PLC 75-76, PLC 100-76,
PLR 75-76, PLR 100-76
Operation, installation
and service manual
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury or death.
- Do not store or use gasoline or other flam-
mable vapors and liquids in the vicinity of this
or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately 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.
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Table of Contents
Related Manuals for American Standard PLC 75-76
Summary of Contents for American Standard PLC 75-76
- Page 1 NEW STANDARDS IN WATER HEATING Residential-Duty Commercial MODELS: PLC 75-76, PLC 100-76, PLR 75-76, PLR 100-76 Operation, installation and service manual Residential-Duty Commercial Water Heater WARNING: If the information in these instruc- tions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
- Page 2 OPERATING, INSTALLATION AND SERVICE MANUAL STORAGE TYPE GAS WATER HEATER WITH FLUE DAMPER WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. -Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Page 3 DANGER Keep flammable products: 1. far away from heater, 2. in approved containers, 3. tightly closed and 4. out of children´s reach. Water heater has a main burner and pilot flame. FLAMMABLE VAPORS The pilot flame: 1. is on all the time and FLAMMABLES 2.
- Page 4 WARNING WARNING Fire Hazard Read and understand instruction manual and safety messages before installing, operating, or servicing this water heater. For continued protection against risk of fire: Failure to follow instructions and safety messages . Do not install water heater on carpeted floor. could result in death or serious injury.
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Page 5: Table Of Contents
TABLE OF CONTENTS WARNINGS WARRANTY LIMITATIONS, CONSUMER RESPONSABILITIES, PRESSUHRE BUILD-UP IN CLOSED WATER SYSTEMS, GENERAL, INSTALLATION DRAFTHOOD LOCATION & FLUE DAMPER INSTALLATION, VENTING WATER CONNECTIONS, GAS PIPING TYPICAL INSTALLATION SINGLE COMMERCIAL GAS MODEL TOP CONNECTIONS WITH RETURN CIRCULATION AIR SUPPLY, ALL AIR FROM INSIDE THE BUILDING ALL AIR FROM OUTDOORS DISCHARGE OF PURGED GASES, VENTING INSTALLATION SAFETY WARNING L.P. - Page 6 WARRANTY LIMITATIONS THE MANUFACTURER OF THIS WATER HEATER WILL NOT BE RESPONSIBLE FOR TANK FAILURES OR WATER HEATER FAILURES RESULTING FROM ANY OF THE FOLLOWING CONDITIONS AND MAY AT IT’S DISCRETIONS VOID THE WATER HEATER WARRANTY WHEN THESE CONDITIONS RESULT IN PREMATURE FAILURES OF THE TANK OR COMPONENTS 1.
- Page 7 FOR YOUR SAFETY Do not use or store gasoline or any other flammable vapors, liquids, or materials in vicinity of this or any other appliance. FOR YOUR SAFETY - WHAT TO DO IF YOU SMELL GAS . Do not try to light any appliance. .
- Page 8 IMPORTANT BEFORE PROCEEDING WITH THE INSTALLATION OF THIS WATER HEATER, READ AND THOROUGHLY UNDERSTAND THESE INSTALLATION AND OPERATION INSTRUCTIONS. IF THERE ARE ANY QUESTIONS, THIS INSTALLATION SHOULD BE PERFORMED BY A QUALIFIED SERVICE PERSON. GENERAL INSPECT SHIPMENT: Inspect water heater for possible damage. If damaged, notify carrier immediately. Check markings on rating plate to make certain it corresponds with your application.
- Page 9 Clearance/Flooring- If the water heater is installed directly on carpeting, it must be installed on a metal or wood panel which extends beyond the full width and depth of the water heater by at least 3 inches in any direction. If the water heater is installed in an alcove, the entire floor must be covered by the panel.
- Page 10 Combustion and Ventilation Air- Provisions must be made for adequate combustion and ventilation air. Details outlining proper air supply for various types of installation are prescribed by the National Fuel Gas Code (ANSI Z-223.1/ NFPA 54) latest edition. If the water heater is installed in unconfined space within the building, infiltration air may be adequate for proper combustion and ventilation.
- Page 11 DRAFTHOOD LOCATION DRAFTHOOD Figure 4 DRAIN PAN INSTALLATION AND CONSTRUCTION MUST CONFORM TO LOCAL CODES AND ORDINANCES. IF NOT INSTALLED AND OPERATED IN ACCORDANCE WITH THESE INSTRUCTIONS, UNDER NO CIRCUMSTANCES WILL THE MANUFACTURER OF THIS WATER HEATER BE LIABLE FOR ANY WATER DAMAGE OR INJURY IN CONNECTION WITH THIS WATER HEATER.
- Page 12 Drafthood- This water heater has been shipped with a draft diverter for which it was designed with reference to the horizontal and vertical planes. If removed, the draft diverter shall be replaced in the same position and secured to the jacket top by the screws with which it was installed. Vent Piping- This water heater must be connected to a masonry chimney or venting system approved by local codes or ordinances.
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Page 13: Typical Installation
TYPICAL INSTALLATION TERMINATION CLEARANCES SIDE WALL Note: The following picture and table are intended to illustrate clearance requirements, and do not serve as a substitute for locally adopted installation codes. Terminal Clearances (uses room air for combustion) Clearance above grade, Clearance to each side of 3 ft. - Page 14 TYPICAL INSTALLATION Hot Water Service VENT CONNECTOR STORAGE TANK Min. 1/4 in. rise per linear feet EXPANSION TANK Return Line CHECK from service VALVE (when used) DRAFTHOOD Cold Water Supply HOT WATER OUTLET SHUT OFF VALVE COLD WATER INLET RATING PLATE T&P RELIEF VALVE Use an Expansion Tank in a closed water system...
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Page 15: Single Commercial Gas Model Top Connections With Return Circulation
SINGLE COMMERCIAL GAS MODEL TOP CONNECTIONS WITH RETURN CIRCULATION Shut off valve Bleed valve System return PUMP Shut off valve Back flow Hot water preventers Shut off valve Water supply Shut off valve Union Expansion tank Union... - Page 16 AIR SUPPLY Important air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to corrosive elements in the atmosphere is excluded from warranty coverage. The following types of installation ( not limited to the following) will require outdoor air for combustion due to chemical exposure and may reduce but not elminate the presence of corrosive chemicals in the air.
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Page 17: All Air From Outdoors
ALL AIR FROM OUTDOORS The confined space shall be provided with two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors. -
Page 18: Discharge Of Purged Gases, Venting
NOTE: If the equipment room is located against an outside wall and the air openings communicate directly with the outdoors, each opening shall have a free area of not less than one square inch per 4,000 BTU per hour of the total input rating of all equipment in the enclosure. - Page 19 After completing all gas connections, check each gas connection and fitting for leaks. Use a soap and water solution or a commercial leak detector fluid. NEVER USE MATCHES OR OPEN FLAME WHEN CHECKING FOR GAS LEAKS. The water heater and its individual gas shut off valve must be disconnected from the gas supply piping system during any pressure testing or that system at test pressures in excess of 1/2 psi (14"...
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Page 20: Installation (Using Top Connect Only)
INSTALLATION (Using Top Connect Only) Typical installation showing two (2) Commercial Heaters in parallel manifold using top connect only. Typical installation showing three (3) Commercial Heaters in parallel manifold using top connect only. Typical installation showing four (4) Commercial Heaters in parallel manifold using top connect only. Figure 10 NOTE: Multiple water heating system and/or a system with additional storage tank must be sized by thermal expansion tank manufacturer. -
Page 21: Temperature And Pressure Relief Valve
TEMPERATURE AND PRESSURE RELIEF VALVE For protection against excessive pressures and/or temperatures, a temperature and pressure relief valve must be installed in the opening marked "temperature and pressure relief valve". A design certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the requirements for Relief Valves and Automatic Gas Shut-off devices for Hot Water Supply Systems, ANSI Z21 .22. -
Page 22: Filling Heater With Water
WARNING TO AVOID POSSIBLE INJURY, FIRE, AND EXPLOSION, READ THESE PRECAUTIONS BEFORE ATTEMPTING TO LIGHT OR RELIGHT THE PILOT. Check the rating plate near the gas control thermostat for correct gas. DO NOT USE THIS WATER HEATER WITH ANY GAS OTHER THAN THE ONE LISTED ON THE RATING PLATE (FIgure 5). Failure to use the correct gas can cause problems which result in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. -
Page 23: Installation Check List
INSTALLATION CHECK LIST Before putting burner in operation This is presented for ease of reference. It is not comprehensive. All instructions and warnings must be read and adhered to A. HEATER LOCATION Close to area of vent. Indoors and protected from freezing temperatures. Proper clearance from combustible surfaces observed and heater not installed directly on carpeted floor. -
Page 24: Natural Gas Models
NATURAL GAS MODELS IF YOU SMELL GAS: 1.- Open windows. 2.- Get all people out of the building. 3.- DO NOT light matches. 4.- DO NOT touch electrical switches (on or off). 5.- Extinguish any open flames. 6.- Use an outside phone and immediately call the gas company and the fire department. Ask for instructions. - Page 25 DANGER DO NOT STORE OR USE ANY COMBUSTIBLE MATERIALS OR LIQUIDS, SUCH AS GASOLINE, PAINT THINNERS OR OTHER FLAMMABLE VAPORS NEAR ANY GAS BURNING APPLIANCES. VAPORS MAY BE IGNITED BY THE PILOT OR MAIN BURNER FLAMES. NO OBSTRUCTION SHOULD BE IN THE FLOW OF COMBUSTION AND VENTILATION AIR. INSTRUCTIONS FOR CLEANING TANK A clean-out procedure is provided for periodic cleaning of the tank.
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Page 26: Combination Space Heating /Potable Water
COMBINATION SPACE HEATING /POTABLE WATER HEATING SYSTEM When using this heater as a source of heat for a combination space heating/potable water heating system, be sure to follow manual(s) shipped with air handler system. Refer to figure 18 page 32. Note the following warnings: Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into this system. - Page 27 FOR YOUR SAFETY READ BEFORE OPERATING WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. A. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand. B.
- Page 28 TO TURN OFF GAS TO APPLIANCE 1.Set the thermostat to lowest setting. 2.Turn the gas valve knob clockwise to “OFF” position. HI-TEMPERATURE LIMIT The thermostat on this water heater is equipped with a high temperature limit switch (ECO). The ECO will shut off the gas supply to the burner and pilot in the event the water temperature exceeds 190 degrees F.
- Page 29 GAS PRESSURE With the water heater in operation (main burner on), the maximum supply pressure must not exceed the specified value below, and the minimum supply and normal manifold gas pressures are as follows: Supply Pressure Manifold Pressure MAX. MIN. NORMAL NATURAL GAS: 11”...
- Page 30 PILOT AND MAIN BURNER MANIFOLD PILOT BURNER Figure 16 WATER HEATER SOUNDS I. Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not represent harmful or dangerous conditions. 2. Sediment buildup in the tank bottom will create varying amounts of noise, and left in the tank, will cause premature tank failure. 3.
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Page 31: Common Issues
COMMON ISSUES FOLLOWING IS A LIST OF THE MOST COMMON COMPLAINTS RELATED TO THE USE OF WATER HEATERS. MANY COMPLAINTS ARE DUE TO ITEMS NOT DIRECTLY RELATED TO THE WATER HEATER. DO NOT ATTEMPT TO SERVICE THE WATER HEATER OR PERFORM OTHER RECOMMENDATIONS ON THIS LIST UNLESS YOU ARE TRAINED AND QUALIFIED TO DO SO. - Page 32 CONDITION CAUSE REMEDY Improper calibration Replace control valve Thermostat set too high Turn temperature knob to desired temperature Sediment or lime in tank Clean out sediment; Refer to page 22 High operating Heater too small for job Install adequate heater costs Leaking faucets Repair faucets...
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Page 33: Replacement Parts List
REPLACEMENT PARTS LIST (SEE FIGURE 17) PARTS REPLACEMENT MUST BE PERFORMED BY A QUALIFIED INSTALLER, SERVICE AGENCY OR GAS SUPPLIER The following parts may be ordered through your plumber, a local plumbing supply company, or direct from the factory. Parts will be shipped at prevailing prices and will be billed accordingly. -
Page 34: Replacement Parts Illustration
REPLACEMENT PARTS ILLUSTRATION STANDARD MODEL SHOWN Figure 17... -
Page 35: Combination Space Heating / Potable Water Heating System
COMBINATION SPACE HEATING / POTABLE WATER HEATING SYSTEM WATER (POTABLE) HEATING AND SPACE HEATING NON-SCALD TEMPERING VALVE COLD WATER INLET SUGGESTED PIPING ARRANGEMENT FOR TOP CONNECTIONS TEMPERED POTABLE WATER RETURN FROM HEAT EXCHANGER Figure 18... - Page 36 561 New York Drive, Pomona, California 91768 Toll Free: (800) 900-9063 - Fax: (909)392-7302...
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