Manuale d’uso / di manutenzione del prodotto CW 745 del fabbricante Lochinvar
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DE SI GNE R ’ S GUI DE CO P P E R -F I N ® WA T E R H E A T E R 495,000 – 2,065,000 Btu/hr.
Dear Specifier/Project Manager , At Lochinvar , we have long recognized the importance of innovation to any product or service. Those who enter into business must also accept the challenge of meeting constantly changing needs.
Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 1 Codes . . . . . . . . . . . . . . . . . . . . . . . . .2 Combustion & V entilation Air . . . . . . . . .5 Contaminants . . . . . . . . . . . . . . . . . . . .6 Determining T otal “Free Area” .
CODES The equipment shall be installed in accordance with those installation regulations in effect in the local area where the installation is to be made. These shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted before installations are made.
The indoor units must be installed so that the ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation and ser vice (circulator replacement, control replacement, etc.). The appliance must be installed on a level, non-combustible floor .
4 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 L o c hinv ar (FIG. 2) W A TER HEA TER EQUIPMENT AND CONTROL ORIENT A TION.
Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 5 COMBUSTION & VENTILA TION AIR Provisions for combustion and ventilation air must be in accordance with Section 5.3, Air for Combustion and V entilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.
6 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 Btu (22 cm 2 per kW) of input, but not less than 100 square inches (645 cm 2 ).
Categor y I double wall vent (or equivalent) connectors and sized according to vent sizing tables (F AN column) in the latest edition of the National Fuel Gas Code . The Categor y I vent and accessories, such as firestop spacers, thimbles, caps, etc., must be installed in accordance with the vent manufacturer’ s listing.
8 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 must be consistent with the National Fuel Gas Code Z223.1 or in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment.
For this type of installation, it is best to use a draft control for each water heater located on the riser between the vent outlet and the breeching - Location “A”.
10 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 An outdoor unit should not be located so that high winds can deflect off of adjacent walls, buildings or shrubber y causing recirculation. Recirculation of flue products may cause operational problems, bad combustion or damage to controls.
A manual main gas shutoff valve is provided outside the jacket, upstream of the main gas valve. In Canada, derated 1 0% f r o m 2 , 000 - 4,500 ft., o v e r 4 , 500 ft. derate must be in accordance with local authorities. Consult factor y for installations at higher elevations.
LOW W A TER TEMPERA TURE DELIVER Y A number of water heating applications may require delivered water temperature in a system below 140°F . Systems such as nursing homes and hospitals would be examples of this type of system.
Due to pump capacity the following specifications cannot be exceeded when using the standard pump: • Not more than 45 feet of straight pipe. • For ever y elbow and tee in excess of those shown above, DEDUCT 5 FEET from maximum allowable straight pipe in heater-to-tank circulating loop.
14 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 Relief V alve This water heater is supplied with temperature and pressure relief valve(s) sized in accordance with ASME Boiler and Pressure V essel Code, Section IV “Heating Boilers.
Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 A1 W A TER HEA TER PIPING DIA GRAMS APPENDIX A PIPING DIAGRAM SINGLE HEA TER - SINGLE T ANK BUILDING HOT W A TER SUPPL Y R.
A2 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 PIPING DIAGRAM SINGLE HEA TER - TWO T ANK FULL PORT BALL V AL VE SYSTEM PUMP SYSTEM RELIEF V AL VE TEE ELBOW UNION EXP .
FULL PORT BALL V AL VE SYSTEM PUMP SYSTEM RELIEF V AL VE TEE ELBOW UNION EXP ANSION TA N K CHECK VA LV E THERMOMETER LEGEND PIPING DIAGRAM TWO TEMPERA TURE INST ALLA TION - SINGLE HEA TER-SINGLE T ANK.
A4 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 PIPING DIAGRAM TWO HEA TERS-SINGLE T ANK FULL PORT BALL V AL VE SYSTEM PUMP SYSTEM RELIEF V AL VE TEE ELBOW UNION EXP A.
Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 6 1 5-889-8900 A5 FULL PORT BALL V AL VE SYSTEM PUMP SYSTEM RELIEF V AL VE TEE ELBOW UNION EXPANSION TA N K CHECK VA LV E REDUCING TEE .
A6 Lochinvar D ESI GNER ’ S GUID E COPPE R - FIN W A TER HE A TER 615-889-8900 PIPING DIAGRAM MUL TI-ST ACK FRAME W/ W A TER HEA TERS AND STORAGE T ANK LIT0396 Heater Heater Inlet/ Manifold Model Ou.
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Loch invar Corporation • Lebanon, TN • 615-889-8900 / Fax: 615-547-1000 www .Lochinvar .com CW -DG-05 (Revised CW-DG-05 1/07) 4/09-Printed in U.S.A.
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 Lochinvar CW 745 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 Lochinvar CW 745 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Lochinvar CW 745 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Lochinvar CW 745 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Lochinvar CW 745, 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 Lochinvar CW 745.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Lochinvar CW 745. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Lochinvar CW 745 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.
