Manuale d’uso / di manutenzione del prodotto CG25 del fabbricante Beckett
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COMMERCIAL PRODUCT S GAS -FIRED Fire, Explosion and Asphyxiation Hazards Failure to follow these instructions exactly could lead to fi re or explosion and result in death, severe personal injury or property damage. Do not store or use gasoline or other fl ammable vapors and liquids in the vicinity of this or any other appliance.
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3 CG15, CG25, CG50 Burner Manual Contents General Information .................................................... 4 Hazard De fi nitions ......................................................................... 4 Professional Installer ’s Responsibility .
4 Hazard De fi nitions Gener al Inf or ma tion Indicates a hazardous situation which, if not avoided, will result in death or serious injury . Used with the safety alert symbol, indicates a hazardous situation, which, if not avoided, may result in minor or moderate injury .
5 CG15, CG25, CG50 Burner Manual Pr e-installa tion Chec klist Indoor Installation Combustion Air Supply The burner requires combustion air and ventilation air for reliable operation. Assure that the building and/or combustion air openings comply with the latest edition of the National Fuel Gas Code ANSI Z223.
6 CG15 CG25 CG50 Input Firing Range † : High Fire (Max.) High Fire (Min.) Low Fire (Max.) Low Fire (Min.) USA Canada USA Canada USA Canada 1,500 MBH 800 MBH 560 MBH 350 MBH 1,370 MBH 800 MBH 560 MBH.
7 CG15, CG25, CG50 Burner Manual Electrical Supply Check the nameplate on the burner to verify that the power connections available are correct for the burner . Refer to Figure 1 . All power must be supplied through fused disconnect switches and comply with the latest edition of National Electric Code NFP A 70 (Canada CSA C22.
8 Figure 3A - Maximum Capacity (at 3% O 2 ) vs Furnace Pressure - CG15, 60Hz. Figure 3B - Maximum Capacity (at 3% O 2 ) vs Furnace Pressure - CG25, 60Hz.
9 CG15, CG25, CG50 Burner Manual Figure 4 - Burner Dimensions Figure 5 - Panel and Modulating V alve Dimensions Model Dim. A Dim. B Dim. C Dim. D Dim. E Dim. F Dim. G Dim. H O.D. Pipe Thread CG15 20.8 9.4 32.7 13.7 5.2 18.4 6.2 10.8 5.6 1-1/4 NPT CG25 20.
10 Mount the burner to the appliance. The burner speci fi ed for packaged equipment will have a fl ange welded for the required insertion. Follow the appliance manufacturer ’s instructions for mounting.
11 CG15, CG25, CG50 Burner Manual Figure 7 - T ypical Gas Piping Layout Gas T rains to Furnace Pressure Drop curves of Figures 14A, 14B, and 14C are correct for both propane and natural gas. That is also why a gas train adjusted for the burner ’s natural gas requirements will be correctly adjusted for its propane requirements.
12 Schedule 40 metallic pipe with 0.50 psi or less inlet pressure and 0.30” W .C. pressure drop Maximum capacity in cubic feet of gas per hour (CFH). Natural gas with 0.60 speci fi c gravity . Pipe size (inches) IPS Pipe length (feet) 0.75” 1.0” 1.
13 CG15, CG25, CG50 Burner Manual Figure 8A - UL Gas Train - High/Low and Low Fire Start Figure 8B - UL Gas T rain - Modulating ABBREV . HGPS LGPS MSC ML TC MV SSOV1 SSOV2 TC TP U 2PRSSOV ITEM DESCRIP.
14 W ir e the Bur ner Install the burner and all wiring in accordance with the National Electric Code ANSI/NFP A 70 (Canada CSA C22.1) and all applicable codes and requirements. Wire the burner in compliance with all instructions and diagrams provided by the appliance manufacturer .
15 CG15, CG25, CG50 Burner Manual Figure 9A - T ypical Wiring Using Model RM7897C for High/Low Control (For Reference Only) continuing to detect a fl ame, the burner will operate in the RUN mode until the load demand is satis fi ed or a limit opens.
16 Figure 9B - T ypical Wiring Using Model RM7840L for Modulating Control (For Reference Only) Section: Sequence of Operation.
17 CG15, CG25, CG50 Burner Manual Pr epar e the Bur ner f or Star t-up Start-up Checklist V erify the following before attempting to start the burner .
18 Star t the Bur ner Initial Air Settings If your burner was built for a speci fi c OEM (Original Equipment Manufacturer) application, the “Mfr ’s Settings” label (see Figure 1 ) will indicate the application and the initial air settings made at Beckett.
19 CG15, CG25, CG50 Burner Manual Figure 10A - Damper Motor with Cover Figure 10B - Damper Motor with Cover Removed Push in on pin ( G ) to disengage the motor from the damper shaft and cam stack. Rotate the damper shaft by hand to place the adjustment cams in a position where their adjustment scale can be easily seen.
20 Optional Modulation Linkage Adjustment Instructions The optional modulation linkage assembly has been designed as an economic means to adjust the damper and the butter fl y valve to maintain air to gas ratios. When the optional Modulation linkage assembly is supplied with the burner , initial adjustments will be made at the factory .
21 CG15, CG25, CG50 Burner Manual T able 3 - Initial Burner Settings for Both Propane & Natural Gas Furnace Pressure at High Fire 0” W .C. 0.25” W .
22 Figure 13A - Display Meaning Modulation Control Modulation of the burner ’s fi ring rate is accomplished by driving the damper motor in small increments to either increase or decrease rate in response to boiler demand.
23 CG15, CG25, CG50 Burner Manual V erify Input Firing Rate Clock the meter , correct for pressure and termperature to get SCFH and calculate the input fi ring rate. Compare the calculated rate to the speci fi ed input for the boiler found on the speci fi cation sheets and on the rating plates for the burner and boiler .
24 Estimating Rate Manifold to Furnace Pressure information can be used to estimate the burner ’s fi ring rate when it is not possible to clock a meter for the rate. T o estimate the burner ’s fi ring rate: Measure the furnace pressure over fi re Measure the manifold pressure (at the manifold pressure test connection).
25 CG15, CG25, CG50 Burner Manual Figure 14A - Manifold to Furnace Pressure Drop vs Rate CG15 * Figure 14B - Manifold to Furnace Pressure Drop vs Rate CG25* 0 200 400 600 800 1000 1200 1400 1600 1800 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 Pressure Drop, In.
26 Check Operation and Safety Controls Figure 14C - Manifold to Furnace Pressure Drop vs Rate CG50* 0 1000 2000 3000 4000 5000 6000 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 Pressure Drop, In. WC Rate, MBH C G 50. 5S C G 50. 4S C G 50. 3S C G 50. 2S C G 50. 1S * Charts represent both natural and propane gas.
27 CG15, CG25, CG50 Burner Manual High gas pressure switch – With the burner fi ring and a manometer attached to the test port nearest the high pressure switch, gradually increase the gas pressure until the high pressure switch opens and shuts the burner off.
28 Maintenance and Ser vice Annual Maintenance (The following should be performed by a quali fi ed service technician only .) Burner: Run the burner and perform a complete combustion test using the proper instruments before proceeding. If necessary refer to the section labeled Start the Burner .
29 CG15, CG25, CG50 Burner Manual Check barometric damper or draft hood for proper operation. Inspect boiler sections and system load piping for possible leaks. Make all necessary repairs. Check all operating and safety controls on the boiler for proper installation and operation.
30 Burner Head Adjustment - There is an optimum gas ori fi ce size and burner head setting for each fi ring rate of the burner . The gas ori fi ce size sets the gas fl ow velocity; the head setting establishes the air fl ow velocity . When those velocities are properly matched the burner provides its best performance and stability .
31 CG15, CG25, CG50 Burner Manual Propane Restrictor Description The Beckett Propane Restrictor Conversion Kit allows for the conversion of CG15, CG25, and CG50 burners for use with propane gas.
32 T able 4 - Propane Restrictors Replacement Part Numbers Burner Model Restrictor Part Number Restrictor Inside Diameter O-Ring Part Number CG15.1S 3246709U 0.532 3226401U CG15.2S 3246710U 0.576 3226401U CG15.3S 324671 1U 0.623 3226401U CG15.4S 3246712U 0.
33 CG15, CG25, CG50 Burner Manual For the Operator T est/Inspection Frequency Comments Inspect area surrounding heating plant Daily Keep area clean and free of clutter Inspect gas supply system for le.
34 R eplacement P ar ts For best performance specify genuine Beckett replacement parts. Note 1: See Burner Con fi guration T able. 1 2 8 3 4 5 12 13 14 7 6 19 18 17 16 15 21 24 25 20 23 22 11 9 10 26.
35 CG15, CG25, CG50 Burner Manual Item Description CG15 Part No. CG25 Part No. CG50 Part No. 1 Timer (if used) 21295U 21295U 21295U 2 Air Proving Switch 22181U 22181U 22182U 3 Ignition Transformer 750.
USA: P .O. Box 1289 ● Elyria, Ohio 44036 Canada: R.W . Beckett Canada, Ltd. ● Unit #3, 430 Laird Road ● Guelph, Ontario N1G 3X7 www .beckettcorp.
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 Beckett CG25 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 Beckett CG25 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Beckett CG25 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Beckett CG25 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Beckett CG25, 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 Beckett CG25.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Beckett CG25. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Beckett CG25 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.
