A.O. SmithメーカーGAHH-40の使用説明書/サービス説明書
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1 This water heater complies with ANSI Z21.10.1-current edition regarding the accidental or unintended ignition of fl ammable vapors, such as those emitted by gasoline. For Y our Safety AN ODORANT IS ADDED T O THE GAS USED BY THIS W A TER HEA TER. • Safety Instructions • Installation • Operation PRINTED IN THE U.
2 T ABLE OF CONTENTS W ater Heater Safety .............................................................................................................................. ............................................. 1-4 Safe Installation, Use and Service .
3 SAFE INST ALLA TION, USE AND SER VICE Y our 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 water heater to warn you and others of a potential hazard.
4 Fire or Explosion Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Avoid all ignition sources if you smell Natural or LP gas. Do not expose water heater control to excessive gas pressure.
5 TYPICAL INST ALLA TION GET TO KNOW YOUR W A TER HEA TER - GAS MODELS A V ent Pipe B Draft hood C Anode (Not Shown) D Hot W ater Outlet E Insulation F Gas Supply Piping G Manual Gas Shut-off V alve H.
6 INST ALLING YOUR GAS W A TER HEA TER Important Information About This W ater Heater This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident.
7 Location Requirements Carbon Monoxide Poisoning Hazard W ARNING Do not install in a mobile home. Doing so can result in carbon monoxide poisoning and death.
8 IMPORT ANT : The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. Due to the normal corrosive action of water , the tank will eventually leak after an extended period of time.
9 Manual Gas Shut-Off Valve Install a readily acces- sible manual shut-off valve in the gas supply line as recommended by the local utility . Check with local utility for minimum height. 6” Max. Air Gap Suitable Drain Discharge Pipe (Do Not plug or cap) 3” Minimum Drip Leg Ground Joint Union FIGU RE 3 .
10 W ARNING • Use a new CSA approved gas supply line. • Install a shut-off valve. • Do not connect a natural gas water heater to 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.
11 T ABLE 3 BTUH Input Minimum Square Feet with 8’ Ceiling T ypical Room with 8’ Ceiling 30,000 188 9 x 21 45,000 281 14 x 20 60,000 375 15 x 25 75,000 469 15 x 31 90,000 563 20 x 28 105,000 657 2.
12 12” Max. Permanent openings to the outside or additional rooms within the building Closet or other confined space 12” Max. FIGU RE 4 . All Air from Inside the Building When additional air is to.
13 FIGU RE 8 B. V ent Pipe System This water heater uses a non-direct, single-pipe vent system to remove exhaust gases created by the burning of fossil fuels. Air for combustion is taken from the immediate water heater location or is ducted in from the outside (see “Combustion Air Supply and V entilation”).
14 Align the legs of the draft hood with the slots provided. Insert the legs and secure the draft hood to the water heater ’s top with the four screws provided as shown in Figure 9. Do not alter the draft hood in any way . If you are replacing an existing water heater , be sure to use the draft hood supplied with this water heater .
15 Piping Installation Piping, fittings, and valves should be installed according to the installation drawing (Figure 13). If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation. The water supply pressure should not exceed 80 psi.
16 Hot Water Outlet In a closed system use a thermal expansion tank Cold Water Inlet V alve Pressure Reducing V alve with Bypass Main Water Supply Cold Water Supply to Fixture Discharge line (Do Not Cap or Plug) Drain line 3/4” ID Min. Drain 1“ Min.
17 For protection against excessive pressures and temperatures, a temperature and pressure relief valve must be installed in the opening marked “T & P RELIEF V AL VE” (see Figure 15A).
18 A diaphragm-type expansion tank suitable for potable water will normally eliminate this weeping condition. Please read and follow the manufacturer ’s instructions for the installation of such tanks. MASSACHUSETTS CODE DOES NOT ALLOW THIS TYPE OF INST ALLA TION.
19 □ Duct wor k is the same c ross - secti onal area as the openings. V ent Pipe System Check for proper drafting at the water heater draft hood. Refer to the “Checking the Draft” section of this manual for the test procedure. If the procedure shows insufficient draft is present, please check the following.
20 W ARNING Explosion Hazard Replace view port if glass is missing or damaged. Failure to do so can result in death, explosion or fire. Operating Instructions Read and understand these directions thoroughly before attempting to operate the water heater .
21 M ATCH RELIEF OPENIN G DRAFT HOOD FIGU RE 18. If the flame flutters or is blown out, combustion products are escaping from the relief opening. If this occurs, do not operate the water heater until proper adjustments or repairs are made to the vent pipe system and/or air supply requirements.
22 Burner Flames Inspect the burner flames through the viewport and compare them to the drawings in Figure 19. A properly operating burner should produce a soft blue flame. Blue tips with yellow inner cones are satisfactory . The tips of the flame may have a slight yellow tint.
23 Good venting is essential for a gas fired water heater to operate properly as well as to carry away products of combustion and water vapor . It is always recommended that a suitable metal drain pan.
24 Powered Anode Operation T o protect the glass-lined water tank from corrosion through electrolysis, this water heater is equipped with a non sacrificial powered anode rod. The powered anode rod is non sacrificial and should not need to be replaced unless damaged.
25 properly . T o prevent water damage, the valve must be pro- perly connected to a discharge line which terminates at an adequate drain. Standing clear of the outlet (discharged water may be hot), sl.
26 Replacing the Flame Sense/Hot Surface igniter Assembly 1 . Remov e the manifold/ bur ner assembly . See Removing the Manifold/Burner Assembly . 2. Lift the retainer c lip strai ght up from th e bac.
27 3. Insert the manifo ld/ burner as sembly into the burner compar tment making sure t hat the tip of the manifo ld tube engages in the slot of the brac ket inside the combust ion chamber (Figure 29). 4. Inspect the door gasket and mak e sure there is no f iberglass insulation bet ween the gasket and the com bus tion cham ber .
28 TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION NO HOT W A TER 1 . T ransformer unplugged. 2. No power at outlet. 3. Therm ostat defect ive. 4. Air Intake Chamber F an defective. 5. Pressure Sw itch defective. 6. Gas V a lve/ Ther most at Switc h in “OFF POSITIO N ” .
29 PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION COMBUSTION ODORS 1 . Insuf f ic ient secondar y air . 2. Water heater flue or vent system blocked. 3. Heater installe d in a co nf ined area. 1 . Provide ventilation to water heater . Check f lue. 2. Clean, located sourc e and cor rec t.
30 Please check g uidelines below. For y our safety, water heat er service shoul d be performe d only by a quali ed serv ice person. Read the GENERAL S AFE TY INFORMAT ION supplied b y the water he ater manu facturer. 1. “POW ER” Flashing Communication Er ror The system has detected a communication error between the upper and lower controls.
31 6. “P-S W”, “OPEN ”, and “CLEA N SCREEN ” Flashing The air pressure switch contacts remain open longer than 5 seconds after the com bustion fan is energized. 1. Clean the sc reen on the com bustion air intake tube. Retest, if the problem persists: 2.
32 cont. 11. “FV-SEN SE” and “OPEN” F lashing Flammable Vapor Sensor is open 1. Check all wiring to the ammable vapor sensor. 2. Remove the connecto rs from the ammable vapor sensor and measure the res istance of t he sensor with an ohmmeter .
33 Please Note: The control c on ti nu a ll y mo n it ors internal circuits and extern a l se ns o rs. Error codes noted abov e , an d th os e f or self-diagnostic faults c an be fo u nd on pages 30 through 32.
34 Item No. Parts Description 1 Draft Hood 2 Flue Baffle 3 Nipple (Hot) 4 Nipple (Cold) 5 Anode Rod 6 Cold W ater Inlet T ube 7 T emperature and Pressure V alve 8 Control Display 9 Air Intake Chamber .
35 Listed Parts Kits and Illustrations Item 1 2: Bur ner (Natural G as ) Item 1 3: Flame Sense/ Hot Sur fac e Igniter As sembly . Item 1 4: Manifo ld door assembly w hich c ontains the manifo ld tube, gask et, manifold door , manifold co mponent block with retainer c lip, and flame sense/ho t sur fac e igniter as sembly .
36 NOTES.
37 NOTES.
38 NOTES.
39 THIS W ARRANTY IS APPLICABLE T O THE ORIGINAL OWNER ONL Y in accordance with the warranty terms and conditions speci fi ed below . The warrantor will furnish the ORIGINAL OWNER, 1) a replacement w.
40 LIMIT A TION ON IMPLIED W ARRANTIES Implied warranties, including any warranty of merchantability imposed on the sale of this heater under state law are limited to one year duration for the heater or any of its parts. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
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