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Manual A.O. Smith 100 Power Vent DV Series 120

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  • A.O. Smith 100 Power Vent DV Series 120 - page 1

    1 Instruction Manual PRINTED 0410 317443-000 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. POWER VENT/POWER DIRECT VENT GAS MODELS WITH HOT SURF ACE IGNITION ALL TECHNICAL AND W ARRANTY QUESTIONS: SHO ULD BE DI REC TED T O T HE LO CA L DEA LER FRO M WHO M TH E W A T ER HEA TE ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 2

    2 T ABLE OF CONTENTS T ABLE OF CONTENTS ........................................................................2 SAFE INST ALLA TION, USE AND SERVICE........................................3 APPROV ALS ........................................................................................3 GENERAL SAFETY INFORMA TION ............................. ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 3

    3 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 safety messages and instructions through ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 4

    4 PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualied service agency to inspect the appliance and to make a determination on what steps should be taken next. If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualied service agency . 1 ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 5

    5 GENERAL SAFETY INFORMA TION ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 6

    6 Fire Hazard Do not install water heater on carpeted floo r. Do not operate water heater if flood damaged. For continued protection against risk of fire: Fire or Explosion Hazard Read instruction manual before installing, using or servicing water heater . Av oid all ignition sources if you smell gas. Do not store or use gasoline or other flammable ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 7

    7 Thank Y ou for purchasing this water heater . Properly installed and maintained, it should give you years of trouble free service. ABBREVIA TIONS USED Abbreviations found in this Instruction Manual include : • ANSI - American National Standards Institute • ASME - American Society of Mechanical Engineers • GAMA - Gas Appliance Manufacturer ? ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 8

    8 * CAUTION HARNESS HAS 120 VAC. IN OPERATION. * * See “Pla nnin g th e Ve nt S yste m,” “Ins tall ation of Vent Sys tem” and “Co nden sate Piping” fo r mo re in form atio n. FIGURE 1. V ACUUM RELIEF V AL VE *INST ALL PER LOCAL CODES M Display Enclosure ** N Exhaust Elbow Assembly ** O Condensate T ubing P Off/On Switch Q Display Label ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 9

    9 Rough-In-Dimensions Units A B C D E F Inches 66.75 49.25 22.00 15.75 3.00 8.00 cm 169.5 125.09 55.88 40.00 7.62 20.32 T op/Side Inlet and Outlet: 3/4” NPT Gas Inlet: 1/2” NPT Capacity , Gas and Electrical Characteristics Approximate Capacity Manifold Pressure Electrical Characteristics U.S. Gals. Liters Gas T ype “WC kP A V olts/Hz Amperes ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 10

    10 LOCA TING THE W A TER HEA TER Carefully choose a location for the new water heater . 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. Property Damage Hazard All water heaters eventually leak. • Do not install without adequate drainage. • CAUT ION ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 11

    11 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 the water heater and combustible con stru ctio n are 0 i n c h at the side s a n d rear , 5. 5” (14.0 cm) from the fro nt and 18” (45.7 cm) from the top. (Stand ard clearance .) If cl e ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 12

    12 ventilation systems, clothes dryers and replaces shall also be considered in determining the adequacy of a space to provide combustion, ventilation and dilution air . UNUSUALL Y TIGHT CONSTRUCTION In unconned spaces in buildings, inltration may be adequate to provide air for combustion, ventilation and dilution of ue gases. However , ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 13

    13 1. 1 square inch per 3000 Btu/hr (700 mm 2 per kW) of the total input rating of all appliances located in the enclosure, and 2. Not less than the sum of the areas of all vent connectors in the space. OUTDOOR AIR THROUGH TWO HORIZONT AL DUCTS FIGURE 6. The conned space shall be provided with two permanent horizontal ducts, one commencing withi ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 14

    14 This water heater shall not be connected to any heating systems or component(s) used with a non-potable water heating appliance. All piping components connected to this unit for space heating applications shall be suitable for use with potable water . T oxic chemicals, such as those used for boiler treatment shall not be introduced into this sys ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 15

    15 MIXING V AL VES Wa ter temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death. Children, the elderly and the physically or mentally disabled are at highest risk for scald injury . Feel water before bathing or showering. Te mperature limiting devices such as mixing valves must be installed when requir ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 16

    16 FIGURE 9. CLOSED W A TER SYSTEMS W ater supply systems may , because of code requirements or such conditions as high line pressure, among others, have installed devices such as pressure reducing valves, check valves, and back ow preventers. Devices such as these cause the water system to be a closed system. THERMAL EXP ANSION As water is heat ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 17

    17 Fit pipe insulation over the incoming cold water line and the hot water line. Make sure that the insulation is against the top cover of the heater .Fit T & P valve insulation over valve. Make sure that the insulation does not interfere with the lever of the T & P valve. Secure all insulation using tape. TEMPERA TURE-PRESSURE RELIEF V AL ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 18

    18 GAS PIPING Make sure gas supplied is same type listed on model rating plate. The inlet gas pressure must not exceed 14 inch water column (3.5 kPa) for natural and propane gas (L.P .). The minimum inlet gas pressure shown on rating plate is that which will permit ring at rated input. All gas piping must comply with local codes and ordinances o ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 19

    19 HIGH AL TITUDE INST ALLA TIONS This high efciency water heater is certied for use without modication for an altitude of 10,000 feet (3,079 meters). Consult the factory for installation at altitudes over 10,100 feet (3,079m). Some gas utility companies derate their gas for altitude, making it unnecessary to install high altitude orice ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 20

    20 VENTING Never operate the water heater unless it is vented to the outdoors. The instructions in this section of the manual must be followed to avoid choked combustion or recirculation of ue gases. Such conditions cause sooting of the combustion chamber , burners and ue tubes and creates a risk of asphyxiation. VENT PIPE TERMINA TION The ? ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 21

    21 PVC M ater ial s s hou ld use ASTM D-25 6 4 Gr ade Cem ent; CPVC Ma te r i a ls sh o ul d use AS T M F- 4 9 3 G r a de C e me nt an d A B S Mate ri als sh oul d use A STM D -2 2 35 G rad e Ce ment . If the water heate r i s being ins tal led as a r epla ce ment for an exist ing power vented heater in p re - exi sti ng venting, a t ho rou gh insp ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 22

    22 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 operated by the Commonwealth and where the side wall exhaust vent t ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 23

    23 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 SIDEW ALL VENT TERMINA TION FIGURE 13 V ent terminal ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 24

    24 TERMINA TION CLEARANCES SIDEW ALL DIRECT VENT V X VENT 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 DIRECT VENT (using outdoor air for combustion) EXTERIOR CLEARANCES FOR SIDEW ALL VENT TERMINA TION FIGURE 14 V ent termi ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 25

    25 SEQUENCE OF INST ALLA TIONS, FIGURE 15A Cut a length of PVC pipe about 3.5 inches (8.9 cm ) longer than the w a l l t h i c k n e s s a t t h e o p e n i n g . G l u e t h e v e n t t e r m i n a l t o t h i s s e c t i o n o f pi pe . Sli de th e wa ll pl at e ov er the pipe to st op aga in st th e ve nt te rmi na l . Pla ce a bea d o f caulki ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 26

    26 VERTICAL VENT TERMINAL INST ALLA TION WHEN TERMINA TING THROUGH A ROOF , THE FOLLOWING SPECIFICA TIONS PERT AINING TO TERMINAL LOCA TION MUST BE FOLLOWED. 1. Proper support must be provided for all pipe protruding through the roof. 2. The vertical roof terminations should be sealed with a plumbing roof boot or equivalent ashing. 3. The intake ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 27

    27 CONCENTRIC VENT INST ALLA TION This appliance is certied for concentric venting with concentric vent kit #9003910105 and #9006328005. Follow instructions below for proper installations. KIT COMPONENTS Each kit is comprised of the following: Item Description Qt y. Rain Cap 3 in. 1 SDR-26 pipe 4 in. dia. 1 SDR-26 pipe 2½ in. dia. 1 Y Concentri ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 28

    28 5 . S e c u r e a s se mb ly t o r o o f s t r uc t u r e a s s h o w n i n F i g u r e 2 3 u s i n g f i e l d s u pp li e d m e t a l s tr a p p i n g o r e qu i va l e nt s u p p o r t mater ial. NOT E: En su re t e r mi na t io n he i gh t is ab ove t he r oo f su r fac e or a nt ic ip at ed s now l evel a s show n in Fi gu re 23 . 6 . Ins t ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 29

    29 5. In sta ll ra in c ap and small d iamet er pip e as semb ly in Y c o nc entr ic t ti ng and la rge pi pe as sem bly . Ensure sm all dia meter pi pe is bot to med a nd c eme nted in Y c o nc entr ic  t tin g. 6. S ecu re ass emb ly to str uct ure as show n in Figur e 24 using el d - supp lie d met al str app ing o r equi valent s upp o ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 30

    30 12” MINIMUM CLEARANCE ABOVE HIGHEST ANTICI PAT ED SNOW LEVEL 12” MINIMUM CLEARANCE ABOVE HIGHEST ANTICI PA TED SNOW LEVEL 24” MINIMUM SEP ARA TION. EXHAUST MUST BE AT SAME LEVE L OR ABOVE INT AKE TERMINAL. DIRECT VENT DIAGRAM FIGURE 28. FIGURE 30. FIGURE 31. FIGURE 32. FIGURE 29. When direct venting through the wall, as shown in Figure 32, ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 31

    31 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 manufacturer a ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 32

    32 B. Deburring Us e a k ni fe , pl as ti c p i pe de bur rin g t ool , o r f il e t o r em ov e b ur rs f ro m the end of small diameter pipe. Be sure to remove all burrs from ar oun d t he ins ide as wel l as the out si de of t he p ipe . A sli ght cha mf er (b eve l) of ab ou t 10 °- 15 ° s ho uld be ad ded to th e e nd to pe rmi t e as ier in ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 33

    33 CONTROLS AND SWITCHES This model is provided with thre e pres sure switches. Th ese switches are essential to the safe and proper operation of the unit. All switches are wired in series. The controller is set up to shut the unit down whenever there is a failure of any of the switches. It is important to understand the purpose of each switch. FIG ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 34

    34 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 34. THI S WATER H E ATER IS P OL ARI T Y S ENSI T VE . B E F O R E A P P LY I N G ELECTRICITY TO TH IS H E ATE R B E C ER TAI N THA T SU ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 35

    35 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. B. BEFORE OPERA TING smell all around ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 36

    36 for the lowest temperature which satisfies your hot water needs. This will also provide the most energy efficient operation of the water heater and minimize scale formation. V alves for reducing the point-of-use temperature by mixing cold and hot water are available, see Figure 8. Also available are i n e x p e n s i ve d e v i c e s t h a t at ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 37

    37 USER INPUT BUTTONS • The up and down buttons are used to navigate menus and adjust user settings. • The operational buttons are used to enter/exit menus, select menu items, activate adjustment modes and conrm or cancel new user settings. The operational buttons are multifunctional, their current function is dened by the text that appea ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 38

    38 ST A TUS ICONS The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described in the table below . T ABLE 3. Icon Description W ater temperature in the tank has fallen. Shaded area of the animated thermometer icon will rise and fall in response to water temperature in the storage t ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 39

    39 OPERA TING ST A TES The current operational state of the water heater is displayed on the Desktop screen as the "Status." The common operational states are described in the table below . T ABLE 4. State Description Standby The water heater is not in an active heating cycle. IE: the T ank T emperature is at or above the Operating Set Po ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 40

    40 USER SETTINGS & CONTROL SYSTEM MENUS TEMPERA TURES OPERA TING SET POINT AND DIFFERENTIAL ADJUSTMENT The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C) for commercial and 160°F (71°C) on residential models. The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 41

    41 TEMPERA TURES (CONT) DESCRIPTION/ACTION DISPLA Y T ank T emperature • - non adjustable - control system sensed temperature from the T emperature Probe. T ank Probe Offset • - adjustable user setting, range -5° to +5° (factory setting 0°). The T ank Probe Offset is used to calibrate control system temperature sensing. This can improve the ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 42

    42 DISPLA Y SETTINGS DESCRIPTION/ACTION DISPLA Y Select Display Settings from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains adjustable display options for viewing information on the LCD screen. Use the Up & Down Buttons to navigate the menu. T emperature Units • - Adjustable use ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 43

    43 CURRENT F AUL T DESCRIPTION/ACTION DISPLA Y Select Current Fault from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains non adjustable operational information. Use the Up & Down Buttons to navigate the menu. This menu contains the current Fault or Alert error message. The time the ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 44

    44 SERVICE CONT ACT INFORMA TION The control system has a discrete menu that Installing contractors and/or service agents can access to enter contact information for their customers. This contact information will be displayed with all Fault and Alert messages. DESCRIPTION/ACTION DISPLA Y From the Desktop Screen press and hold down the middle (unmar ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 45

    45 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. THERMAL EXP ANSION W ater supply systems may , because of such events as high line pressure, frequent cut-offs, the effects of wat ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 46

    46 VENTING SYSTEM INSPECTION At least once a year a visual inspection should b e made of the venting system. Y ou should look for: 1. Obst ruct io ns whic h cou ld caus e imp rope r ven ting . Th e com bust io n and ventilation air ow must not be obstructed. 2. Damage or deterioration which could cause improper venting or leakage of combustion p ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 47

    47 Burn harzard. Hot water discharge. Keep hands clear of drain valve discharge. TO DRAIN THE W A TER HEA TER STORAGE T ANK: 1. T urn off the electrical supply to the water heater . 2. Turn of f the gas supply at the Main Gas Shutoff V alve if the water heater is going to be shut down for an extended period. 3. Ensure the cold water inlet valve is ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 48

    48 MAINTENANCE TEMPERA TURE-PRESSURE RELIEF V AL VE TEST Burn hazard. Hot water discharge. Keep clear of Te mperature- Pressure Relief V alve discharge outlet. It is recommended that the T emperature-Pressure Relief V alve should be checked to ensure that it is in operating condition every 6 months. When checking the T emperature-Pressure Relief V ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 49

    49 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 water heater . A *Condensation may be seen on pipes in humid weather or pipe connections may be leaking. B. *The anode rod ? ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 50

    50 TROUBLESHOOTING Flow Chart. 1. When the control system is rst powered, during boot up, it will display water heater model information during initialization. After a few moments the control system LCD which is part of the UIM (user interface module) will display the default screen known as the "Desktop" screen. 2. If the control syst ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 51

    51 SEQUENCE OF OPERA TION FLOW CHART YES NO Wa te r is hea t ed to se t po in t 24 V Ga s Va lv e de -e nerg iz ed Approximately 30 se co nd In te r- Pu rge cycl e 24 V Ga s Va lv e de- energi ze d Re tr ie s up to tw o mo re ti me s Approximately 30 se co nd Po st -P ur ge cycl e C ont r o l Sy st em Loc ks Ou t “I gni ti on Fa il ure” Fa ul t ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 52

    52 If the Main Burner ignites momentarily but does not sustain ignition allow the water heater to try to ignite up to two more times until control system locks out and the Ignition Failure Fault message is displayed on the control system's LCD. If the water heater is experiencing rough starts - see Rough Starting, Rough Operation on this page. ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 53

    53 NOTE: If you are not qualied and licensed or certied as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the diagnostic or service procedures described in the following section. If you do not understand the instructions in the following section do not attempt to perform any procedures. ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 54

    54 F AUL T AND ALERT MESSAGES Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualied service agent in your area. POSSIBLE CAUSES - CHECK/REP AIR DISPLA YED F AUL T/ALERT MESSAGE The water heater ’s control system is polarity sensitive and will lock • out and disable heating op ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 55

    55 F AUL T AND ALERT MESSAGES (CONT) Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualied service agent in your area. POSSIBLE CAUSES - CHECK/REP AIR DISPLA YED F AUL T/ALERT MESSAGE The control system has detected the Blower Prover Switch • contacts are closed when they shoul ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 56

    56 NOTES ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 57

    57 NOTES ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 58

    58 NOTES ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 59

    59 LIMITED W ARRANTY A. O. Smith Corporation, the warrantor , extends the following LIMITED WARRANTY to the owner of this water heater . THE T ANK 1. 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 years after initi ...

  • A.O. Smith 100 Power Vent DV Series 120 - page 60

    60 500 T ennessee W altz Parkway , Ashland City , TN 37015 Phone: 800-527-1953 Fax: 800-433-2515 www .hotwater .com ...

Manufacturer A.O. Smith Category Water Heater

Documents that we receive from a manufacturer of a A.O. Smith 100 Power Vent DV Series 120 can be divided into several groups. They are, among others:
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