A.O. Smith BTX-80 SERIES 100 manual

1 Instruction Manual PRINTED 0810 1 97 086-004 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. POWER VENTED GAS MODELS W/HOT SURF ACE IGNITION MODEL BTX- 8 0 SERIES 1 00 ALL TECHNICAL AND W ARRANTY QUESTIONS: SHO UL D BE DIR ECT ED TO T HE LOC AL DEA LE R FRO M WH OM TH E W A TE[...]

2 SAFE INST ALLA TION, USE AND SER VICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. 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. Read and obey all sa[...]

3 GENERAL SAFETY INFORMA TION[...]

4 GENERAL SAFETY INFORMA TION at le as t 1 8" (4 5. 7 cm ) ab ov e the floo r. This will reduce, but not eliminate, the ri sk[...]

5 Thank Y ou for purchasing this water heater . Properly installed and maintained, it should give you years of trouble free service. Abbreviations Found In This Instruction Manual: • CSA -CanadianStandards Association • ANSI- AmericanNationalStandardsInstitute • NFP A -NationalFireProtection [...]

6 INST ALLA TION REQUIREMENTS FOR THE COMMONWEAL TH OF MASSACHUSETTS COMMONWEAL TH 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 o[...]

7 TYPICAL INST ALLA TION * CAUTION HARNESS HAS 120 VAC. IN OPERATION. ** See “PLANNING THE VENT SYSTEM ”, “CONDE NSA TE” and “BLOWER ASSEMBL Y INST ALLA TION” for more information. *** The side recirculation loop connections may not be used as the primary water inlet and outlet connections. For your convenience, plugs are installed in t[...]

8 TYPICAL INST ALLA TION CONDENSA TE HOSE AND DRAIN P AN FIGURE 1 (continued).[...]

9 TYPICAL INST ALLA TION MIXING V AL VES DA NGER Wa ter temperatur e over 125° F (52°C) c an cause severe burns instantl y resulting in severe injury or death. Children, the elderly and the physically or mentally disabled are at highest risk for scald injury . Fe el water be fo re ba t hing or sh owering . Te mperature limiting devices such as mi[...]

10 ROUGH-IN-DIMENSIONS Rough-In-Dimensions T op/SideInletandOutlet:3/4”NPT GasInlet:1/2”NPT Capacity and Gas and Electrical Characteristics Allmodels-MaximumSupplyPressure:14inchesW .C.(3.48kPa) MinimumSupplyPressureNaturalGas:5.0inchesW .C.(1.24kPa) MinimumPressure?[...]

11 F ACTS TO CONSIDER ABOUT THE LOCA TION Car efu lly choo se a n ind oor loca tio n fo r the new wate r he ater , beca use 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. This water heater is not for use in manufactured (mobile) homes or outdoor insta[...]

12 in an alcoveor closet, the entire oormust be covered by thepanel. Failuretoheedthiswarningmayresultinarehazard. Minimum clearances between water heater and combustible construction are 0 inch at the sides and rear , 5.5” (14.0 cm) [...]

13 Such a condition often will result in a yellow , luminous burner flame, causing sooting of the combustion chamber , burners and flue tubes and creates a risk of asphyxiation. Do not install the water heater in a conned space unless an adequate supply of air for combustion and ventilation is brought in to[...]

14 Figure 7. The water heater shall have clearances of at least 1 inch (25 mm) from the sides and back and 6 inches (150 mm) from the front of the appliance. The opening shall directly communicate with the out doors or sh all commu nicate through a ve rtical or horizont al duct to the outdoors or spaces tha[...]

15 T h i s w a t e r h e a t e r s h o u l d n o t b e c o n n e c t e d t o a n y h e a t i n g s y s t e m s o r co mpo nent(s )u sedwi thanon - pot ablewate rheati ngappl ianc e. Al l pip ing com pone nts c onn ecte d to this unit for spac e h eatin g app lica tion s shoul d be suit abl e for use w ith p otabl e water . To x[...]

16 THERMAL EXP ANSION As water is heated,it expands (thermal expansion). In a closed system the volume of water will grow when it is heated. 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 (leakag[...]

17 discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 feet (9.14 m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve. No valve or other obstruction is to be placed between the T emperature-Pressure Relief V alv[...]

18 A  gasline of sufcient sizemust be run to thewater heater .  Consult thecurrentedition ofNationalFuel GasCode(ANSIZ223.1/NFP A  54) or the Natural Gas and Propane Installation Code (CAN/CSA B149.1)andyourgassupplierconcernin[...]

19 Never use t his water heat er unles s it is co mplete ly full of water. T o prevent dama ge t o th e t ank, the ta nk m ust b e  lled wit h wate r . Water must  ow from t he hot water f aucet b efore tur nin g“ ON ” gas to th e water he ater . T ollt[...]

20 TERMINA TION CLEARANCES SIDEW ALL POWER VENT V X VEN T TERMINAL AIR SUPPL Y INLE T A RE A WHERE TERMINAL IS NO T PERMITTED v v A G V FIXE D CLOSED FIXE D CLOSED OPERABLE OPERABLE V C B B B B F B V V A J V H M X X V V K B E D L POWER VENT (using room air for combustion) EXTERIOR CLEARANCES FOR SIDE WA LL VENT TERMINA TION FIGURE 15. V ent termina[...]

21 PLANNING THE VENT SYSTEM Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal. Refer to V AA instruction on page 25 while planning the vent system. 1. Layout total vent system to use a m ini mum of vent pipe and elbows. 2. Thiswater heateriscapable ofventing ?[...]

22 The condensate trap may be primed by lling the CONDENSA TE U-ASSEMB L Y with tap water while the water heater is not operatin g. The system is fully primed when the water level reaches the adaptor connected into the T ee. In most installations the water heater will self-prime thecondensate trap during[...]

23 CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERA TION. VERIFY PROPER OPERA TION AFTER SERVICING. POWER VENT WIRING SCHEMA TIC - FIGURE 19. m a y b e e as ie r t o m a rk b ot h t he i ns id e an d o u ts id e wa ll . A li gn ho le s by drilling a hole through center of t[...]

24 INST ALLA TION OF VENT SYSTEM, SIDEW ALL With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT SYSTEM, the through the wall vent terminal in place and the rst section  of piping, up to rst elbow ,?[...]

25 VENT ATTENUA TION ASSEMBL Y IN S T A L L A TI O N I N S T R U CT IO N S The V ent Attenuation Assembly (V AA) is designed to provide  a  reduction in fan noise created in the blower wheel. This installation of this V AA is optional. Review directions thoroughly prior to installing the new V AA. Please contact the ma[...]

26 b a r b , u s e  a  w i r e  t i e  o r  h o s e c l a m p  (n o t s u p p l i e d  w i t h  k i t) and se cure. 6 . T a ke t he o t he r e n d o f t h e f l ex i bl e t ub i n g a n d s li d e i t t h r o ug h the h ose c lamp o n the j acket top cover an d inst all it i nto one of the f our bar b f itt ings [...]

27 VENT PIPE PREP ARA TION 1. INITIAL PREP ARA TION A. Make sure the solvent cement you are planning to use is designedforthespecicapplicationyouareattempting. B. Know the physical and chemical characteristics and limitations of the PVC and CPVC piping materials that you are about to use. C. Know the reputation of your manuf[...]

28 B. Deburring  U s e a k n i f e , p l a s t i c p i p e  d e b u r r i n g t o o l , o r  l e t o r em o v e b u r r s f r o m t h e e n d o f s ma l l d i a m e t e r p i p e . B e s u r e t o r e m ov e a l l b u r r s f r om a r o u n d t h e i n s id e  a s  w el l  a s  t he  o [...]

29 FOR YOUR SAFETY READ BEFORE OPERA TING W ARNING: If you do not follow these instructions exactly , a re 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.[...]

30 It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature be set for the lowest temperature whichsatises your hot water needs. This will also provide the most energy efcient oper[...]

31 FOR YOUR INFORMA TION ST ART UP CONDITIONS SMOKE/ODOR It is not uncommon to experience a small amount of smoke and odor during the initial start-up. This is due to burning of f of oil from metal parts, and will disappear in a short while. STRANGE SOUNDS Possible noises due to expansion and contraction of some metal parts during periods of heat-u[...]

32 VENTING SYSTEM INSPECTION At least once a year a visual inspection should be made of the venting system. Y ou should look for: 1. Obstru ction s which could ca use imp roper ventin g. Th e combu stion andventilationairowmustnotbeobstructed. 2. Damage or deterioration which could cause improper venting or leakage of combus[...]

33 Th e an ode ro d is use d t o pr ote ct the tan k fr om cor ros ion . Mo st hot wat er tanks are equipp edwit han anode rod. Thesub merged rod sacrice s itsel f to protect the tank. Instead of corrodin g tank , water ions attack and ea t away the  anode ro d. Thi s does no t affe ct?[...]

34 LEAKAGE CHECKPOINTS Neveruse thiswater heaterunless itis completelylledwith water .  T o prevent damage to the tank, the tank must be lled with water .  W atermustow fromthehotwaterfaucetbeforeturning “ON”gas to the w[...]

35 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Pleasecheckguidelinesbelow .Foryoursafety ,waterheaterserviceshouldbeperformedonlybyaqualiedservicetechnician. ReadtheGENERAL SAFETYINFORMA TIONsectionrst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLEM SO[...]

36 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Pleasecheckguidelinesbelow .Foryoursafety ,waterheaterserviceshouldbeperformedonlybyaqualiedservicetechnician. ReadtheGENERAL SAFETYINFORMA TIONsectionrst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLE MS [...]

37 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Pleasecheckguidelinesbelow .Foryoursafety ,waterheaterserviceshouldbeperformedonlybyaqualiedservicetechnician. ReadtheGENERAL SAFETYINFORMA TIONsectionrst. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL PROBLE MS [...]

38 Theseguidelinesshouldbeutilizedbyaqualiedserviceagent. TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES[...]

39 Limited W arranty A. O. Smith Corporation, the warrantor , extends the following LIMITED W ARRANTY to the owner of this water heater . 1. THE T ANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein,during therst THREE yea[...]

40 500 T ennessee Waltz Parkway , Ashland City , TN 37015 T echnicalSupport:800-527-1953•Parts:800-433-2545•Fax:800-644-9306 www .hotwater .com Copyright © 201 0 A . O. Smith Cor poration. All rights reserved.[...]