Manuale d’uso / di manutenzione del prodotto GWH 425 EF del fabbricante American Dryer Corp.
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Water heat ers for u se with Natural an d L.P.G. GWH 425 EF Flow Modulat ed wit h Elec t ronic Ignit ion and Power V ent ing Suit able for heat ing pot able w ater only - Not a pproved fo r spac e hea.
2 6 720 607 017 WARNING : Improper installation, adjustment , alteration , service or maintenance can c ause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier .
3 6 720 607 017 425 EF LP and 425 EF NG Specifications W ater C onnection 1 /2” Thread fitting N PT H x W x D 29 3 / 4” x 1 8 1 / 4” x 8 3 / 4" V ent 4” Gas C onnection 1 /2” N PT thread Min. W ater Pressure 1 8 Psi Max. W ater Pressure 1 50 Psi Shipping W eight 50.
4 6 720 607 017 M I N I M U M I N S T ALLA TIO N C LE AR AN C E S FR O M C O M B U STI B LE AN D N O N CO M B U STI B LE MA TE R IAL S F O R AL C OVE O R C L O SET I N ST ALLA TI O N S FR O NT VI EW S.
5 6 720 607 017 G E N E R AL R U LE S T O FOLL OW FOR SAF E OP E R A TION 1. Y ou should follow these instructions when you install your heater . In the United St ates : T he inst allation must conform with local codes or, in the absence of local codes , the National Fuel Gas Code AN S I Z223.
6 6 720 607 017 COMBUSTION AIR REQUIREMENTS T he 425 E F water heater holds cold water in its copper heat exchanger and brass water valve when not in use. Because of this, any cold air that comes in through the unit’s vent pipe is capable of freezing these components.
7 6 720 607 017 Fig. 3 - Incandescent Part icle T ray Illustrat ion The incandescent particle tray (shipped loose in the carton with the water heater) must be attached at the bottom of the water heater front cover at the time of installation. Use the screws provided.
8 6 720 607 017 VENTING WARNING: Do not reduce the vent pipe size and do not common vent with any other vented appliance or stove. This appliance must be vented horizontally to the outside with a sealed 4” single wall vent pipe.
9 6 720 607 017 Fig 4: S ome V ent ing Guide Suggest ions An approved side wall vent terminal must be used when the water heater is vented through a side wall .
10 6 720 607 017 Fig 5: Side wall exit locations for mechanical draft vent terminals SOFFIT VENT HOOD 7’ MINIMUM ABOVE PUBLIC WALKW A Y ONE FOOT ABOVE GRADE 3’ ABOVE ANY FORCED AIR INLET WITHIN 10.
11 6 720 607 017 Fig. 6 - Appliance pressure regulator (with directional arrow on reverse side pointing up) GAS LINE SIZING The pressure regulator provided with the heater is adjusted to deliver the proper gas pressure (as indicated on the rating plate and in the manual for altitude up to 2000 feet (660 meters) above sea level.
12 6 720 607 017 GAS PIPING, CONNECTIONS Before connecting the gas supply, chec k the rating plate on the right side of the front cover to be sure that the heater is rated for the same gas to which it will be connected.
13 6 720 607 017 Fig.7 - Water valve and water connectors, top view W A T ER CO NNEC TI ONS Install the heater centrally in the building if possible and make hot water piping runs as short as possible When facing the heater , the cold water inlet will be on the right and the hot water outlet on the left.
14 6 720 607 017 ELECTRICAL CONNECTIONS WARNING: For safety reasons, disconnect the power supply to the heater before any service or testing is performed. WARNING: This heater must be electrically grounded in accordance with the most recent edition of the National Electrical Code , N FP A 7 0.
15 6 720 607 017 OPER A T ING INS TRUC T IO NS Before operating the heater , make sure that the system is filled with water . Open the cold water inlet supply to the heater fully .
16 6 720 607 017 Fig. 1 2 - Charact eristic Pilot Flame Flame sensor Piezo Electrode W at e r V alve ( Part # 87 07 002802): The water valve on this heater should be ser viced periodically .
17 6 720 607 017 3. Water flow is not sufficient to activate heat er . W ater flow rate at faucet is below minimum flow needed to activate heater . When temperature adjustment knob is turned all the way clockwise, the model 425 E F requires 1 /2 gallon per minute flow to activate the heater.
18 6 720 607 017 Mineral deposits can eventually (3-5 years in hard water areas) corrode the water valve parts to a point where they will need replacing. Any sign of moisture at the bleed hole is a sign that the water valve needs to be replaced immediately.
19 6 720 607 017 WA T E R I S T O O HOT 1 . T emperat ure Select ion t oo high T urn the temperature adjustment knob counter-clockwise (to the left) to lower the maximum water temperature.
20 6 720 607 017.
21 6 720 607 017 Fig . 1 5 - Diagram of 425 EF 1 . Heat exchanger 2. Pilot assembly 3. Burner manifold gas pressure test nipple 4. Main gas burner 5. Pilot gas tubing 6. Gas valve 7 . electric control box 8. Power cord 9. on/off switch 1 0. T emperature adjustment selector 1 1 .
22 6 720 607 017 Fig. 1 6 - I NTE R IOR COM P O N E NTS D IA G R AM AN D P ARTS LI ST.
23 6 720 607 017 Fig. 1 6 INTERIOR COMPONENTS DIAGRAM AN D P ARTS LIST 425 E F 1 Cover 8 705 421 775 2 Temperature a djustment knob 8 702 000 111 3 Temperature adjustment collar 8 700 403 008 4 Draft .
24 6 720 607 017 Fig . 1 7 - Flow chart of 425 E F.
25 6 720 607 017 Fift een Y ear Limit ed Warranty General B O SC H PR O water heaters are warranted by the Manufacturer ( B O SC H ) through C ontrolled Energy C orp.
VU L C AN O T ermodomésticos S.A . Estrada de Cacia 380 1 - 8 56 Aveiro - P O RTUGAL Recycled paper © 20 04 C ontrolled Energy C orporation, W aitsfield , V T all rights reserved Replacement Parts available from North American Distributor CONTROLL E D E N ER G Y C OR P .
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 American Dryer Corp. GWH 425 EF 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 American Dryer Corp. GWH 425 EF - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso American Dryer Corp. GWH 425 EF imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul American Dryer Corp. GWH 425 EF ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il American Dryer Corp. GWH 425 EF, 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 American Dryer Corp. GWH 425 EF.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il American Dryer Corp. GWH 425 EF. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo American Dryer Corp. GWH 425 EF 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.
