Caravan GAS Modular Boilers Application Manual

Text of Caravan GAS Modular Boilers User Guide:

• Caravan GAS Modular Boilers, WARRANTY INCLUDES: FIRST YEAR: Repair or replacement in accordance with warranty service procedure, for a period of one year after or iginal installation, of all parts found to be defectively manufactured. W ARRANTY INCLUDES: SECOND THROUGH FIFTH YEAR: Repair or replacement for the second through fifth year after original installation, of cast iron heat exchanger found to be defectively manufac- tured, at no cost for the replacement part. The repaired or exchanged part will be warranted for only

• Caravan GAS Modular Boilers, HOT WATER/GAS Modular Boilers APPLICATION GUIDE Publication No. CG-10-HWG Pr inted in the U .S .A. 1104 www.slantfin.com Guidelines for the design, purchase and installation of Slant/Fin Caravan gas-fired, hot water modular boiler systems. ® CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Ratings and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .3,4 Recommended Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Optional factory supply and return headers . . . . . . . . . . . . . .6 Boiler room design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Boiler room

• Caravan GAS Modular Boilers, 10 Figure 9. Connector rise Figure 10. Suggested venting system constructions Connector Rise: Connector rise is the length of the pipe connecting the top of the draft hood to the system breeching above. The diameter of this pipe varies depending upon BTU input, chimney height and the length of the connector. Fig.9 (Dim. “B”) shows the location of this pipe in a typical appli- cation. Table 2a depicts the proper diameter (Dim. “C”) of the connector rise depending upon its total length (top of the dr aft hoods to the breeching abo ve). GG-200C 7” 7” 7” 8” GG-250C 8” 8” 8” 10” GG-300

• Caravan GAS Modular Boilers, 11 Gas Main Sizing To determine the correct pipe diameter for the gas main serving a specific Caravan system, proceed as follows: a. Follow the building plans, find total length of straight pipe between supply from gas meter and boiler gas header. b. Using data in Table 4, calculate equivalent linear length of screw pipe fittings used in fabrications of main. Add this to figure from step (a) to obtain equivalent total length. c. Find Caravan gas consumption in cubic feet per hour from Table 3 in hot water s

• Caravan GAS Modular Boilers, REQUEST FOR CARAVAN SYSTEM RATING PLATE NOTE: INDICATE ACCURATELY Some model numbers are similar, such as GGT-600 and GGT-600E etc. PLEASE USE CARE TO MAKE SURE THE PROPER SYSTEM MODEL IS INDICATED COMPLETE WITH LETTER SUFFIX. BE ACCURATE! INCLUDE ALL LETTERS AND ZEROS, ENTER ALL INFORMATION ASKED FOR! USE A SEPARATE FORM FOR EACH SYSTEM Slant/Fin Tech Service FAX THIS REQUEST TO: 516-484-6958 PHONE: 516-484-2600 Requested by: Mail to: Phone: Phone: Required Required SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600 F AX: (516) 484-5921 • Canada:

• Caravan GAS Modular Boilers, 5 Figure 2. Recommended boiler piping for variable circulation Figure 3. Supply and return piping locations Figure 4. Instantaneous tankless coil— two temperature with recirculation Figure 5. Storage tank from tankless coil with recirculation RECOMMENDED PIPING

• Caravan GAS Modular Boilers, 14 BILL OF MATERIALS FOR SC SERIES CONTROLLERS Material List for SC-3 • SC-3 modular boiler control (part# 435-084) • 1 Outdoor sensor (part # 339-070) • 1 Universal sensor to be used as supply water sensor (part # 339-071) • 1 Plastic tie strap Material List for SC-9 • 1 SC-9 modular boiler control (part # 435-085) • 1 Outdoor sensor (part # 339-070) • 2 Universal sensors (part # 339-071) - 1 to be used as supply water sensor - 1 can be used as return water sensor • 2 Plastic tie straps Other Options include: • Immersion well for supply water sensor: to be installed in control header supplied with Caravan • High Limit (manual reset) and Immersion Well: t

• 9 VENTING A GAS-FIRED SYSTEM A boiler v enting system provides an escape path for the products of comb ustion. There are three major components for venting a gas-fired Caravan: a draft hood for each module, a breeching manifold and a chimney. Draft Hood The draft hood is part of each boiler module, although shipped in a separate carton. It compensates for excessive draft that can be caused b

• Caravan GAS Modular Boilers, 12 T able 5. Characteristics of various fuel gases Table 6. Gas main sizing guide Natur al 1000 Btu 1.00 Propane 2500 Btu 1.10 Type of Gas Heating Valve*† Flow Correction Factor * per cubic f oot † Consult fuel supplier for actual BTU value. 10 20 30 40 50 60 70 1/4 .364 32 22 18 15 14 12 11 3/8 .493 72 49 40 34 30 27 25 1/2 .622 132 92 73 63 56 50 46 3/4 .824 278 190 152 130 115 105 96 1 1.049 520 350 285 245 215 195 180 1 1/4 1.380 1,050 730 590 500 440 400 370 1 1/2 1.610 1,600 1,100 890 760 670 610 560 2 2.067 3,050 2,100 1,650 1,450 1,270 1,150 1,050 2 1/2 2.469 4,800 3,300 2,700 2,300 2,000

• Caravan GAS Modular Boilers, 13 THE BOILER STAGING CONCEPT The heart of the Caravan boiler plant is a temperature-actuated control system that automatically stages only those boiler modules needed to meet the heating demand in a given period, thereb y conserving fuel. In a staging control system, each stage ordinarily activates one boiler module. With appropriate wiring, multiple modules can be g rouped within a stage. During a fluctuation in heating requirements, a large central boiler cycles on and off to match heat output to building demand. A staged modular boiler system,

• Caravan GAS Modular Boilers, 3 * Specify gas b y name, "Natural" or "Propane". † Net r atings are based on piping and pic k-up allo w ance of 1.15. Slant/Fin should be consulted before selecting a boiler for installation having unusual piping and/or pick-up requirements. Ratings must be reduced by 4% at 2,000 ft. elevation and an additional 4% f or every additional 1,000 ft. elevation over 2,000 ft. ‡ Net r atings in square feet based on emission rate of 150 Btuh/sq. ft. § Ref er to figures 1 and 8. Headers sho wn are optional. ‡‡All factory supplied headers use 3" system connec

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