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A.O. Smith GPS-75 - page 1
1 PRINTED IN U.S.A. 0805 P ART NO. 197209-000 GAS MODELS Power V ent GPS-75 with Hot Surface Ignition Thank you for buying this A. O. Smith energy efficient water heater . We appreciate your confidence in our products . Y ou should thoroughly read this manual before inst allation and/ or operation of this water heater . Please pay particular attent ...
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A.O. Smith GPS-75 - page 2
2 ( A ) VENT PIPE ( B ) ANODE (C ) HOT W A TER OUTLET (D ) OUTLET (120 V AC) (E ) FLUE BAFFLE (F ) GAS SUPPL Y (G ) MAIN MANUAL GAS SHUT OFF V A L VE (H) GROUND JOINT UNION (J ) DIRT LEG (K) OUTER DOOR (L ) UNION ( M) INLET W A TER SHUT OFF V A L VE (N) COLD W A TER INLET *CAUTION HARNESS HAS 1 15 V AC. IN OPERA TION FIGURE 1 REPLACEMENT P ARTS AND ...
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A.O. Smith GPS-75 - page 3
3 GENERAL SAFETY INFORMA TION EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • Has been exposed to fire or damage. • Displays evidence of sooting. • Produces steam or unusually hot water . If the water heater has been subject to flooding it must be replaced. ...
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A.O. Smith GPS-75 - page 4
4 • Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference. • Do obtain new warning and instruction labels for placement on the blanket directly over the existing labels. • Do inspect the insulation blanket frequently to make certain it does not sag, thereby obstructing combustion air flow ...
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A.O. Smith GPS-75 - page 5
5 not known, the latest edition of National Fuel Gas Code ANSI Z223.1 recommends using figures of 20-25 percent free area for wood louvers or 60-75 percent for metal grills or louvers. UNCONFINED SP ACE In buildings of conventional frame, brick or stone construction, unconfined spaces may provide adequate air for combustion, ventilation, and diluti ...
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A.O. Smith GPS-75 - page 6
6 REFER TO FIG . 1 FOR CONNECTION DET AILS. BEFORE A TT ACHING THE GAS LINE BE SURE THA T ALL GAS PIPE IS CLEAN ON THE INSIDE. T O TRAP ANY DIR T OR FOREIGN MA TERIAL IN THE GAS SUPPL Y LINE, A DIRT LEG (SOMETIMES CALLED DRIP LEG) MUST BE INCORPORA TED IN THE PIPING , FIG . 1. The dirt leg must be readily accessible. Install in accordance with reco ...
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A.O. Smith GPS-75 - page 7
7 BETWEEN THE RELIEF V AL VE AND T ANK. DO NOT PLUG THE RELIEF V AL VE. The drain line connected to this valve must not contain a reducing coupling or other restriction and must terminate near a suitable drain to prevent water damage during valve operation. The discharge line shall be installed in a manner to allow complete drainage of both the val ...
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A.O. Smith GPS-75 - page 8
8 NOTE: This unit can be vented using only PVC (Class 160, ASTM D-2241; Schedule 40, ASTM D-1785; or Cellular Core Schedule 40 DWV , ASTM F-891), Schedule 40 CPVC/ASTM F-441), or ABS/ASTM D-2661) pipe. The fittings, other than the TERMINA TION 45° ELBOW should be equivalent to PVC- DWV fittings meeting ASTM D-2665 (Use CPVC fittings, ASTM F-438 fo ...
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A.O. Smith GPS-75 - page 9
9 3. Make sure that plastic tubing is still attached to the pressure switch and fan housing. Also make sure that wiring connector from motor to control box is securely attached. 4. Do not plug in power cord until vent system is completely installed. The Power V ent operates on 120 V ac, therefore a grounded outlet must be within reach of the 6 foot ...
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A.O. Smith GPS-75 - page 10
10 INST ALLA TION OF VENT SYSTEM, SIDEW ALL With the route of the venting system and selection of materials completed, as discussed in section of this manual titled PLANNING THE VENT SYSTEM, the through the wall vent terminal in place and the first section of piping, up to first elbow , installed at the blower it is time to complete the installatio ...
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A.O. Smith GPS-75 - page 11
11 2. SELECTION OF MA TERIALS • Cutting Device - Saw or Pipe Cutter • Deburring T ool, Knife, File, or Beveling Machine (2" and above) • Brush - Pure Bristle • Rag - Cotton (Not Synthetic) • Primer and Cleaner • Solvent Cement - PVC for PVC Components and CPVC for CPVC Components • Containers - Metal or Glass to hold Primer and C ...
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A.O. Smith GPS-75 - page 12
12 STEP E NOTE: Cans of cement and primer should be closed at all times when not in use to prevent evaporation of chemicals and hardening of cement. They are also very flammable and should be kept away from heat or flame. F . Joint assembly Working quickly , insert the pipe into the fitting socket bottom and give the pipe or fitting a 1/4" tur ...
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A.O. Smith GPS-75 - page 13
13 FOR YOUR SAFETY READ BEFORE OPERA TING W ARNING: 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 does not have a pilot. It is equipped with an ignition device which automatically lights the burner . Do NOT try to light the burner by hand ...
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A.O. Smith GPS-75 - page 14
14 TEMPERA TURE REGULA TION CAUTION THIS WA TER HEA TER IS EQUIPPED WITH AN ADJUST ABLE THERMOST A T TO CONTROL WA TER TEMPERA TURE. HOT W A TER TEMPERA TURES REQUIRED FOR AUT OMA TIC DISHW ASHER AND LAUNDR Y USE CAN CAUSE P AINFUL SCALDING WITH POSSIBLE SERIOUS AND PERMANENT INJURY . THE TEMPERA TURE A T WHICH INJURY OCCURS V ARIES WITH THE PERSON ...
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A.O. Smith GPS-75 - page 15
15 PERFORMED ONL Y BY A QUALIFIED SERVICE TECHNICIAN. READ THE GENERAL SAFETY INFORMA TION SECTION FIRST . USERS OF THIS APPLIANCE SHOULD BE A WARE THA T GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERA TION PERIODICALL Y BY A QUALIFIED SERVICE TECHNICIAN. MAIN BURNER ...
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A.O. Smith GPS-75 - page 16
16 If the heater is to be shut off and exposed to freezing temperatures, it must be drained. Water , if left in the tank and allowed to freeze, will damage the heater . • Turn of f the gas and cold water inlet valve to the heater. • Open a nearby hot water faucet and the heater drain valve. • BE CAREFUL TO GRASP THE DRAIN V AL VE HANDLE SO TH ...
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A.O. Smith GPS-75 - page 17
17 TROUBLESHOOTING For your safety , water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMA TION section first. W ARNING: DO NOT BY -P ASS ANY CONTROLS TO MAKE HEA TER OPERA TE. OPERA TE ONL Y AS WIRED FROM F ACTOR Y . 1 ) Blower will not run A ) “ON/OFF” control switch turned off B) Blo ...
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A.O. Smith GPS-75 - page 18
18 W A TER HEA TER CONTROL PROBLEM SOLUTION An open earth ground circuit to the 1. Check that the earth ground connection is ignition system. properly connected. 2. Check that the ground conductor on the water heater is properly connected. Wiring error or a high resistance to 1. Check for proper connection of line earth ground. neutral and hot wire ...
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A.O. Smith GPS-75 - page 19
19 THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONL Y . If th e glass lined tank in this water heater shall prove upon examination by the A. O. Smith Corporation (warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, the warrantor will furnish the ORIGINAL OWNER a r ...
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A.O. Smith GPS-75 - page 20
20 A.O. SMITH WATER PRODUCTS CO., INC. 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Phone: 1-800-821-2017 Website: www.hotwater.com ...
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