Instruction/ maintenance manual of the product BPD-400 A.O. Smith
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1 A DIVISION OF A.O. SMITH CORPORA TION Mc BEE, SOUTH CAROLINA PLACE THESE INSTRUCTIONS ADJACENT T O HEA TER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
2 Input Ca pac ity SHIPPING B T U Gallon GAS WEIGHT Model (kw-H r . ) (Liters) " A " " B " " C " "D" "E " "F" " G" "H" " I" LINE ST D ASM E BPD - 400 390,000 95 82.
3 TYPICAL INST ALLA TION INT A KE FOR COMBUSTION AIR VENT TO OUTDOORS FLUE PRODUCTS DISCHARGE PIPE AIR INT AKE PIPE TEMPERA TURE PRESSURE RELIEF VA LV E V ACUUM RELIEF REQUIRED BY SOME CODES (REFER TO.
4 These designs comply with the current version of the American National S t andard for Gas W ater Heaters, V olume III, ANSI Z21.10.3 / CSA 4.3 as automatic circulating tank water heaters, and automatic storage water heaters. Detailed installation diagrams are found in this manual.
5 SERVED BY THIS HEA TER THA T HAS NOT BEEN USED FOR A LONG PERIOD OF TIME (GENERALL Y TWO WEEKS OR MORE). HYDROGEN GAS IS EXTREMEL Y FLAMMABLE. T o reduce the risk of injury under these conditions, i.
6 foot of air . Therefore, the heater input rate should be reduced at high altitudes for satisfactory operation with the reduced oxygen supply . Failure to make this reduction would result in an over-firing of the heater causing sooting, poor combustion and/or unsatisfactory heater performance.
7 ROBER TSH A W 47484A PILO T SENSOR R O BER TSHA W DERHC-S7C NA TURAL 1" x 1" GAS V AL VE GAS V AL VE The gas valve is used to supply the gas to the unit during heat up periods. The ignition control module monitors the thermostat's call for heat and sends a signal to the gas valve when to open to allow gas flow.
8 STEP DOWN TRANSFORMER The controls system utilizes a 120/24 V AC step down transformer. Most of the control system utilizes 24 V AC for operation. See wiring diagram for those components utilizing 24 V AC and 120 V AC. P1 20/24 V AC STEP DOWN TRANSFORMER BURNER TRA Y ASSEMBL Y The appliance is equipped with a user friendly burner tray assembly .
9 HIGH LIMIT SWITCH The surface mounted high limit switch monitors the flue gases escaping through the blower assembly to ensure the temperatures do not exceed the rating for the CPVC/PVC vent pipe utilized on the venting.
10 CLEARANCES The unit is approved for installation on combustible flooring in an alcove when the minimum clearance to combustibles is maintained per Figure 6 and the table below . AB C D (RIGHT SIDE) (LEFT SIDE) (BACK) (CEILING) 0" (0cm) 0" (0cm) 0" (0cm) 12" (30.
11 FIGURE 9 WIRE FENCE When the water heater outlet terminal is low enough to be touched accidentally , or is accessible to small children, a wire mesh chain link fence (as shown in Figure 9) may be used. Care should be taken to maintain adequate ventilation around the outlet terminal.
12 FIGURE 10 W A TER PIPING WARNING HOTTER W A TER CAN SCALD: W A TER HEA TERS ARE INTENDED T O PRODUCE HOT W A TER. W A TER HEA TED T O A TEMPERA TURE WHICH WILL SA TISFY CLOTHES W ASHING , DISH W ASHING , AND OTHER SANITIZING NEEDS CAN SCALD AND PERMANENTL Y INJURE YOU UPON CONT AC T .
13 FILLING THE W A TER HEA TER CAUTION NEVER USE THIS W A TER HEA TER UNLESS IT IS COMPLETEL Y FILLED WITH W A TER. T O PREVENT DAMAGE TO THE T ANK, THE T ANK MUST BE FILLED WITH W A TER. W A TER MUST FLOW FROM THE HOT WA TER F AUCET BEFORE TURNING "ON" GAS TO THE W A TER HEA TER.
14 WIRING DIAGRAM FOR ROBERTSHAW CONTROL SYSTEM - NATURAL GAS ONLY NOTE: If any of the original wire as supplied with the water heater must be replaced, it must be replaced with 105°C thermoplastic AWM wire or its equivalent. CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
15 VENTING WARNING T O INSURE PROPER VENTING OF THIS GAS-FIRED W A TER HEA TER, THE CORRECT VENT PIPE DIAMETER MUST BE UTILIZED. ANY ADDITIONS OF OTHER GAS APPLIANCES ON VENT WITH THIS W A TER HEA TER ARE PROHIBITED AS THEY WILL ADVERSEL Y AFFECT THE OPERA TION OF THE W A TER HEA TER.
16 VENTING (CONT'D) TYPICAL INSTALLATION - UP TO 110' (33.5 m) Follow illustration above if making an immediate horizontal run of vent off the blower fittings on top of the water heater . 1. The water heater requires its own (separate) venting system.
17 3. Minimum vent length is 18" (46 cm) when 4" pipe is used and 45' (13.7 m) when 6" pipe is used. CEMENTING PVC OR CPVC PIPE AND FITTINGS Read and observe all safety information printed on primer , cleaner , and cement containers.
18 The 4" or 6" PVC Schedule 40 or CPVC Schedule 40 or 80 vent pipes can be run from the water heater through the wall or from the wall to the water heater , whichever is most convenient. The vent pipes must extend a minimum of 1 1/2" (3.
19 CONNECTING VENT TO BLOWER - 6" VENT PIPING 1. If making an immediate horizontal run of vent off the blower , a 7 1/ 4" (18.4cm) min. long PVC Schedule 40 pipe section and an elbow are required for the inlet pipe.
20 gas control valve could result in a fire or explosion from leaking gas. WARNING If the main gas line shutoff serving all gas appliances is used, also turn “OFF” the gas at each appliance. Leave all gas appliances shut off until the water heater installation is complete.
21 Before attaching the gas line be sure that all gas pipe is clean on the inside. T o trap any dirt or foreign material in the gas supply line, a drip leg (sometimes called a sediment trap) must be incorporated in the piping. The drip leg must be readily accessible.
22 Before the water heater will operate: 1. The control system must be connected to a 1 10/120 power supply . This control system has an overall rating of 12 amps or less.
23 A . This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand. B. BEFORE OPERA TING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor .
24 TEMPERA TURE REGULA TION DANGER HOT W A TER CAN SCALD: W A TER HEA TERS ARE INTENDED TO PRODUCE HOT W A TER. W A TER HEA TED TO A TEMPERA TURE THA T WILL SA TISFY SP ACE HEA TING , CLOTHES W ASHING , DISH W ASHING , AND OTHER SANITIZING NEEDS CAN SCALD AND PERMANENTL Y INJURE YOU UPON CONT ACT .
25 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 off of oil from metal parts, and will disappear in a short while.
26 pilot. If the water was extremely hot and is now cold, the high limit safety temperature shut off may have put out the burner and pilot. Refer to “High Temperature Shut Off System” in this section. 4. The gas control knob must be turned to the “ON” position.
27 for cleaning, call the local gas utility to remove and clean the burner and correct the problem that required the burner to be cleaned. HOUSEKEEPING Vacuum around base of water heater for dust, dirt, and lint on a regular basis.
28 ONE TEMPERA TURE - ONE HEA TER HORIZONT AL ST ORAGE T ANK FORCED CIRCULA TION WITH OR WITHOUT BUILDING RECIRCULA TION DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 24.
29 * PIPE RELIEF V AL VE TO OPEN DRAIN. NOTE: IF TEMPERED WA TER IS RECIRCULA TED, RETURN LINE SHOULD BE CONNECTED A T POINT “A”. INST ALL IN ACCORDANCE WITH LOCAL CODES. TWO TEMPERA TURE - ONE HEA TER HIGH TEMPERA TURE WITH OR WITHOUT BUILDING RECIRCULA TION DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES.
30 TWO TEMPERA TURE - TWO HEA TERS HIGH TEMPERA TURE WITH OR WITHOUT BUILDING RECIRCULA TION TWO TEMPERA TURE - THREE HEA TERS (TWO PRE-HEA TERS/ONE BOOSTER HEA TER) WITH OR WITHOUT BUILDING RECIRCULA TION MUST BE IDENTICAL HEA TERS FOR MUL TIPLE HEA TER INST ALLA TION SEE MANIFOLD KIT SPECIFICA TIONS, P AGE 33.
31 * PIPE RELIEF V A L VE TO OPEN DRAIN * * 140°F (60°C)TO 150°F (66°C) SHOULD BE MAXIMUM WA TER TEMPERA TURE MAINT AINED IN THE PRE-HEA TERS. 120°F (49°C) SHOULD BE THE MINIMUM TEMPERA TURE OF W A TER IN THE PRE- HEA TERS. CONNECT CIRCULA TING LINE FROM FIXTURES, IF USED, T O COLD W A TER SUPPL Y LINE OF PRE-HEA TER.
32 NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C) W ATER CIRCULA TION. INST ALL ON OR CLOSE TO DISHW ASHER. TOGGLE SWITCH MUST BE CLOSED (ON) DURING THE RINSE OPERA TION AND OPEN (OFF) WHEN DISHW ASHER IS NOT OPERA TING OR WHEN ON LONG ST ANDBY .
33 MANIFOLD KITS Precision cut type “L” all copper A.O. Smith manifold kits assure water flow balance of all units. Without this balance, the full water heating and storage potential of the system cannot be achieved. Plus, the units with the higher water flow may have a shortened life.
34 SEDIMENT REMOVAL Waterborne impurities consist of the particles of soil and sand which settle out and form a layer of sediment on the bottom of the tank. For convenience, sediment removal and lime scale removal should be performed at the same time.
35 Model BPD 400 Limited Warranty A. O. Smith Corporation, the warrantor, extends the following LIMITED W ARRANTY to the owner of this water heater . 1.
36 A.O. SMITH WATER PRODUCTS CO. 500 T ennessee Waltz Parkw a y, Ashland City, TN 3701 5 PHONE: 1-800-433-2545 • FAX: 1-800- 433-2515 www.hotwater.com / email: parts@hotwater.
An important point after buying a device A.O. Smith BPD-400 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought A.O. Smith BPD-400 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data A.O. Smith BPD-400 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, A.O. Smith BPD-400 you will learn all the available features of the product, as well as information on its operation. The information that you get A.O. Smith BPD-400 will certainly help you make a decision on the purchase.
If you already are a holder of A.O. Smith BPD-400, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime A.O. Smith BPD-400.
However, one of the most important roles played by the user manual is to help in solving problems with A.O. Smith BPD-400. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device A.O. Smith BPD-400 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
