Manuale d’uso / di manutenzione del prodotto 650A, 740A del fabbricante A.O. Smith
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1 MODELS BTP(V)-540A, 650A AND 740A COMMERCIAL GAS, GLASS-LINED, TANK-TYPE LOW NOx WA TER HEA TER CONSER CONSER CONSER CONSER CONSER V V V V V A A A A A TIONIST TIONIST TIONIST TIONIST TIONIST ® ® ® ® ® P ART NO. 195033-000 CAUTION TEXT PRINTED OR OUTLINED IN RED CONT AINS IN- FORMA TION RELA TIVE TO YOUR SAFETY .
2 FOREWORD The design of the BTP 540A through 740A models complies with ANSI Z21.10.3/CSA 4.3 as an automatic circulating tank and an automatic instantaneous type heater . The BTPV 540A through 740A models are designed for sidewall venting and direct venting applications and are certified under UL 795.
3 are different from natural gas models. A natural gas heater will not function safely on LP gas and no attempt should be made to convert a heater from natural gas to LP gas. BTP(V)-540A, 650A & 740A models are not available for use with Liquefied Petroleum or LP gas.
4 and sodium chloride (water softener salt), waxes, and process chemicals are typical compounds which are potentially corrosive. Do not store products of this sort near the heater . Also, air which is brought in contact with the heater should no contain any of these chemicals.
5 Continued manual resetting of high limit control, preceded by higher than usual water temperature is evidence of high limit switch operation. The following are possible reasons for high limit switch operation.
6 Units, which are to be installed on combustible flooring, must be supported by a full layer of hollow concrete blocks, from 8” (203.2 mm) to 12” (304.
7 Heater must be protected from freezing downdrafts during shutdown periods. The BTP 540A, 650A and 750A water heater are classified as a category I appliance (non-positive vent pressure, non- condensing) when installed with the supplied barometric draft control assembly in a vertical vent installation.
8 Refer to T able 2 for limitations of venting system design for horizontal venting. T ABLE 2 BTPV-540A-740A Flue Outlet Dia. (Inches/mm) 9” (228.6) Flue Reducer 9” x 8” Dimensions -Supplied (Inches/mm) 228.6 x 203.2 Minimum Outlet V ent Dia. (Inches/mm) 8” (203.
9 DIRECT VENTING - FOR BTPV MODELS All exhaust vent terminal, flue reducer , and intake vent terminal are supplied with any unit intended for direct venting. These parts must be installed without alteration. This heater is category III appliance when used in a direct vent application.
10 1. Shall be located not less than 12” (304.8 mm) above grade. 2. Shall be located not less than 3 (.9144 m) feet horizontally from and not less than 3 feet (.9144 m) below an exhaust vent terminal. 3. Shall not be located directly above an exhaust terminal.
11 5. Attach a properly sized length of Selkirk Metalbestos model PS or model G venting to the exhaust vent adapter using the inner vee bands, see Figures 7 and 7B on page 10. 6. Fill the grooves in both inner vee bands with high-temp silicone sealant, Dow Corning 736 or equivalent.
12 T ABLE 9A MAXIMUM CAP ACITY OF PIPE IN CUBIC FEET OF GAS PER HOUR (Based upon a Pressure Drop of 0.5 inch Water Column and 0.5 Specific Gravity Gas and max. gas press. of .5 psig) LENGTH I N Nominal Iron Pipe Sizes, Millimeters METERS 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3 " 4 " 3.
13 ROBERTSHA W ® 7000 DERHC GAS CONTROL V AL VE FIGURE 10. W A TER LINE CONNECTIONS Following are detailed installation diagrams for typical methods of application for the water heaters. The water heater may be installed by itself, or with a separate storage tank, on both single and two-temperature systems.
14 INST ALLA TION DIAGRAMS ONE TEMPERA TURE - ONE HEA TER VERTICAL STORAGE T ANK FORCED CIRCULA TION WITH OR WITHOUT BUILDING RECIRCULA TION DANGER IF BUILDING COLD W A TER SUPPL Y HAS A BACKFLOW PREVENTER, CHECK V A L VE OR W A TER METER WITH CHECK VAL VE, PROVISIONS FOR THERMAL EXP ANSION OF W A TER IN THE HOT WA TER SYSTEM MUST BE PROVIDED.
15 TWO TEMPERA TURE - ONE HEA TER HIGH TEMPERA TURE WITH OR WITHOUT BUILDING RECIRCULA TION TWO TEMPERA TURE - TWO HEA TERS HIGH TEMPERA TURE WITH OR WITHOUT BUILDING RECIRCULA TION *PIPE RELIEF V AL VE TO OPEN DRAIN NOTE: IF TEMPERED W A TER IS RECIRCULA TED, RETURN LINE SHOULD BE CONNECTED A T POINT “A”.
16 CAUTION: IF BUILDING COLD W A TER SUPPL Y HAS A BACKFLOW PREVENTER, CHECK V ALVE OR W A TER METER WITH CHECK V AL VE, PROVISIONS FOR THERMAL EXP ANSION OF WA TER IN THE HOT WA TER SYSTEM MUST BE PROVIDED.
17 TWO TEMPERA TURE - ONE HEA TER HIGH TEMPERA TURE WITH RECIRCULA TION OF SANITIZING LOOP CAUTION: IF BUILDING COLD WA TER SUPPL Y HAS A BACKFLOW PREVENTER, CHECK V AL VE OR W A TER METER WITH CHECK V AL VE, PROVISIONS FOR THERMAL EXP ANSION OF W A TER IN THE HOT WA TER SYSTEM MUST BE PROVIDED.
18 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.
19 HEA TER WIRING IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH 105°C WIRE OR ITS EQUIV ALENT , EXCEPT IN THE BURNER HOUSING USE 200°C WIRE. The power burner is wired to the heater as shown in Figure 1 1 for BTP models and Figure 12 for BTPV models.
20 FIGURE 1 1..
21 FIGURE 12..
22 FOR YOUR SAFETY READ BEFORE LIGHTING 1. Remove thermostat control cover . 2 . Set thermostat to lowest setting. 3 . Turn burner switch to “OFF”. 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.
23 SEQUENCE OF OPERA TION – Power on. – Heater in standby mode. – Thermostat calls for heat. – Blower motor starts. – Blower operation closes the normally open blower prover/ blocked outlet safety pressure switch. – On proof of airflow , Honeywell S8680J flame control module energized.
24 1. Check gas line pressure with a manometer . Set initial gas line pressure at 9-10” w .c. before turning the heater “ON”. Read gas line pressure and gas manifold pressure when the heater main gas is “ON”. Adjust gas line regulator setting if the gas line pressure drops below 8” w .
25 PREMIX LOW NOx BURNER - EXPLODED VIEW FOR BTP MODELS FIGURE 13..
26 PREMIX LOW NOx BURNER - EXPLODED VIEW FOR BTPV MODELS FIGURE 14..
27 GENERAL INFORMA TION POWER BURNER The initial start-up procedure of the gas power burner is provided on page 18 thru 21. Refer to Figure 12, burner exploded view for burner components location. The sequence of operation of the power burner is provided on page 15.
28 DRAINING The heater must be drained if it is to be shut down and exposed to freezing temperatures. Maintenance and service procedures may also require draining the heater . 1. Turn off the heater electrical disconnect switch. 2. Close the cold water inlet valve to heater .
29 ABOVE ALL, DO NOT PLUG THE TEMPERA TURE AND PRESSURE RELIEF V AL VE. THIS IS NOT A SOLUTION AND CAN CREA TE A HAZARDOUS SITUA TION. CIRCULA TING PUMP The water heating system may include a circulating pump. Where used, it should be lubricated as directed by the circulator manufacturer .
30 2. Check the fuses. • The electrical disconnect switch usually contains fuses. 3. The capacity of the heater may have been exceeded by a large demand for hot water . 4. Colder incoming water temperature will lengthen the time required to heat water to the desired temperature.
31 Refer to the SEQUENCE OF OPERA TION and burner exploded view , see Figure 12 and the wiring diagram located on page 20, and the troubleshooting section of burner manual before continuing.
32 • Do not proceed to Step 5 unless 24V is detected at “24V” terminal of the Honeywell Module. 5. As soon as the pilot gas valve is energized, check for the burner pilot flame through the burner peek-hole. If the pilot flame is established inside the burner , then proceed to Step 6.
33 Model BTP(V) Limited Warranty A.O. Smith Corporation, the warrantor , extends the following LIMITED W ARRANTY to the owner of this water heater . 1.
34 NOTES.
35 NOTES.
36 REPLACEMENT P ARTS 5621 W . 1 15TH STREET , ALSIP , IL 60803 Phone: 800-433-2545 Fax: 800-433-2515 w w w .aosmithwaterheaters.com E-Mail: parts@hotwater .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il A.O. Smith 650A, 740A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del A.O. Smith 650A, 740A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso A.O. Smith 650A, 740A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul A.O. Smith 650A, 740A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il A.O. Smith 650A, 740A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del A.O. Smith 650A, 740A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il A.O. Smith 650A, 740A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo A.O. Smith 650A, 740A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
