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Model CFC ClearFire Condensing Boiler
Table of Contents
MODEL CFC FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
MODEL CFC PRODUCT OFFERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DIMENSIONS AND RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
PERFORMANCE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
ENGINEERING DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
STACK/BREECHING SIZE CRITERIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
CB FALCON CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
List of Figures
AluFer Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Fireside Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Premix Burner Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Model CFC Heat Flow and Component Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ClearFire Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Model CFC Dimensional Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Competitive Condensation Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Emissions Data Clearfire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-19
Pressure Drop Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22-25
Condensate Piping Direct To Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Optional Condensate Treatment Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Condensate Piping for Multiple Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Condensate Treatment Tank for Multiple Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Gas Piping Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Gas Header Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Model CFC Minimum Room Clearance Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
CFC Seismic Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
No Primary Loop with Domestic Water and 2-Way Divert Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Two Boilers and Three Variable Temperature Zones (No Primary Loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Two-Pipe Primary/Secondary Piping with Domestic Hot Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Two-Pipe Primary/Secondary Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
No Primary Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Domestic Water Heating, No Primary Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Domestic Water with On/Off and 3-Way Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Piping 'Hybrid' Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
'Hybrid' Boilers with Domestic Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
2 Pipe System, Typical (reverse-return) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
1
Rev. 05-2012
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Table of Contents
Related Manuals for CleaverBrooks CFC ClearFire
Summary of Contents for CleaverBrooks CFC ClearFire
- Page 1 Model CFC ClearFire Condensing Boiler Table of Contents MODEL CFC FEATURES AND BENEFITS ..............3 MODEL CFC PRODUCT OFFERING .
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Page 2: Table Of Contents
Model CFC ClearFire Commercial Boilers Zoning with Zone Valves ................... . .48 Domestic Water with 2 Boilers and 2 Coils . -
Page 3: Model Cfc Features And Benefits
Model CFC ClearFire Commercial Boilers MODEL CFC FEATURES AND BENEFITS The Model CFC boiler is a single pass, Compact Firetube Design vertical down fired durable firetube boiler. The internal extended-heating surface tubes provide very high levels of performance in a compact space, offering over 10 square feet of heating surface per boiler horsepower, providing many years of trouble free performance. -
Page 4: Premix Burner Technology
Model CFC ClearFire Commercial Boilers Combined with a variable speed fan, this technology provides very low emission levels, exceptionally safe operation, and nearly 100% combustion efficiency. Full Modulation The variable speed fan provides modulated firing for reduced on/off cycling, excellent load tracking, and reduced operating costs. The burner does not require mechanical linkage connections between the fuel input valve and air control. -
Page 5: Model Cfc Product Offering
Model CFC ClearFire Commercial Boilers Combustion Fan and Premix Gas Valve Assembly Safety Relief Valve Burner Canister Air Vent Connection Control Panel Hot Water Outlet “Finned” High Efficiency AluFer Tubes High Temp. Return Low Temp. ASME Code Return Pressure Vessel Flue Gas Outlet Figure B5-4. - Page 6 Model CFC ClearFire Commercial Boilers Standard Equipment Equipment described below is for the standard boiler offering: 1. The Boiler A. Each boiler size is designed for a Maximum Allowable Working Pressure (MAWP) of 125 psig (8.6 Bar), constructed in accordance with the ASME Code Section IV and bear the "H"...
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Page 7: Clearfire Control Panel
Model CFC ClearFire Commercial Boilers LWCO RESET DEMAND SWITCH FALCON DISPLAY / OPERATOR INTERFACE Figure B5-5. ClearFire Control Panel (1500/1800 shown) 4. Forced Draft Burner A. The burner is a "Pre-mix" design consisting of a unitized venturi, single body dual safety gas valve, blower, and burner head. B. -
Page 8: Dimensions And Ratings
Model CFC ClearFire Commercial Boilers • Low Gas Pressure Interlock, manual reset. • High Gas Pressure Interlock, manual reset. • ASME CSD-1 Test Cocks. • Downstream manual ball type shutoff cock. • Single body dual safety shutoff gas valve. Optional Equipment For option details, contact the local authorized Cleaver-Brooks representative. -
Page 9: Model Cfc Dimensional Views
Model CFC ClearFire Commercial Boilers Figure B5-6. Model CFC Dimensional Views Rev. 05-2012... -
Page 10: U.s. Standard Dimensions Model Cfc Boiler
Model CFC ClearFire Commercial Boilers Table B5-1. U.S. Standard Dimensions Model CFC Boiler ITEM DIMENSIONS (inches) 1000 1500 1800 2500 3300 Overall Height 71.8 71.8 75.7 81.6 81.6 82.2 85.0 Overall Width 32.3 32.3 36.6 43.7 43.7 50.8 61.3 Overall Depth 48.8 48.8 62.6... -
Page 11: Metric Dimensions Model Cfc Boiler
Model CFC ClearFire Commercial Boilers Table B5-2. Metric Dimensions Model CFC Boiler Boiler Size ITEM DIMENSIONS (mm) 1000 1500 1800 2500 3300 Overall Height 1824 1824 1923 2073 2073 2088 2159 Overall Width 1110 1110 1290 1557 Overall Depth 1240 1240 1590 1666... -
Page 12: Model Cfc Boiler Ratings (Sea Level To 2000 Feet)
Model CFC ClearFire Commercial Boilers Table B5-3. Model CFC Boiler Ratings (Sea Level to 2000 Feet) Description Units 1000 1500 1800 2500 3300 Input Max. BTU/Hr. 500,000 750,000 1,000,000 1,500,000 1,800,000 2,500,000 3,300,000 KCAL/Hr. 126,000 189,000 252,000 378,000 453,600 630,000 831,600 Natural Gas (1000 Btu/ft3) FT3/Hr... -
Page 13: Altitude Correction For Input Capacity At Various Altitude Levels
Model CFC ClearFire Commercial Boilers Table B5-4. Altitude Correction for Input Capacity at Various Altitude Levels Natural Gas 700' ASL 2000' 4000' 6000' 8000' 10000' CFC 3300 3300 kBTU/h 3300 3300 3300 3057 2930 CFC 2500 2500 2418 2245 2083 1930 1850 CFC 1800... -
Page 14: Competitive Condensation Analysis
Model CFC ClearFire Commercial Boilers Competitor 1 Competitor 2 Clearfire Figure B5-7. Competitive Condensation Analysis ClearFire The Tables below depict the operating efficiencies of each size Model CFC boiler, Efficiencies including radiation losses. As the Model CFC is a fully condensing boiler, maximum efficiency is obtained when operating within the condensing mode, utilizing the latent heat of condensation. -
Page 15: Clearfire Efficiency
Model CFC ClearFire Commercial Boilers Table B5-7. CFC 1000 ClearFire Efficiency Firing Rate Return Water Temperature F (20) (27) (38) (49) (55) (60) (72) 97.8 94.3 92.4 90.1 88.5 98.5 96.5 93.5 90.8 89.5 88.5 87.5 97.5 96.2 92.5 89.5 88.3 87.3 96.5... -
Page 16: Emissions Data Clearfire
Model CFC ClearFire Commercial Boilers Emissions The Model CFC Boiler has been tested by an independent testing lab for Low NOx certification in California under the requirements of South Coast Air Quality Management District (SCAQMD) Rule 1146. Meeting the requirements of SCAQMD also qualifies the boiler for meeting the NOx requirements in the state of Texas. - Page 17 Model CFC ClearFire Commercial Boilers Figure B5-9. Emissions Data ClearFire Model CFC 750 Figure B5-10. Emissions Data ClearFire Model CFC 1000 Rev. 05-2012...
- Page 18 Model CFC ClearFire Commercial Boilers Figure B5-11. Emissions Data ClearFire Model CFC 1500 Figure B5-12. Emissions Data ClearFire Model CFC 1800 Rev. 05-2012...
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Page 19: Emissions Data Clearfire
Model CFC ClearFire Commercial Boilers Figure B5-13. Emissions Data ClearFire Model CFC 2500 Figure B5-14. Emissions Data ClearFire Model CFC 3300 Rev. 05-2012... -
Page 20: Engineering Data
Model CFC ClearFire Commercial Boilers Noise Level The Model CFC is extremely quiet at all operating levels, does not require any sound level modifications to provide ultra low noise levels, and is virtually vibration free. Thus, it is very suitable in applications that demand low noise levels. Table B5-11 shows the noise levels of the Clearfire at various firing rates. -
Page 21: Cfc Flow Rates
Model CFC ClearFire Commercial Boilers (90.5 C) is set for normal boiler operation. While proper overpressure is required, a means to relieve excess pressure at or beyond the design pressure of the boiler must be provided. As boiler water is heated, expansion occurs. -
Page 22: Pressure Drop Curves
Model CFC ClearFire Commercial Boilers Table B5-13. CFC Flow Rates (Metric) System Temperature Drop Boiler Flow Rate m /hr. Size 21.6 10.9 29.75 1000 1500 29.5 1800 11.3 2500 106.7 53.4 36.7 26.8 21.6 17.9 15.2 13.4 11.8 10.9 3300 Flow rate as a function of Delta T at 94% efficiency and maximum firing capacity Figure B5-15. - Page 23 Model CFC ClearFire Commercial Boilers Figure B5-16. Pressure Drop Curve ClearFire Boiler Size 750 Figure B5-17. Pressure Drop Curve ClearFire Boiler Size 1000 Rev. 05-2012...
- Page 24 Model CFC ClearFire Commercial Boilers Figure B5-18. Pressure Drop Curve ClearFire Boiler Size 1500 Figure B5-19. Pressure Drop Curve ClearFire Boiler Size 1800 Rev. 05-2012...
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Page 25: Pressure Drop Curves
Model CFC ClearFire Commercial Boilers Figure B5-20. Pressure Drop Curve ClearFire Boiler Size 2500\ Figure B5-21. Pressure Drop Curve ClearFire Boiler Size 3300 Rev. 05-2012... -
Page 26: Model Cfc Minimum Over Pressure Requirements
Model CFC ClearFire Commercial Boilers Table B5-14. Model CFC Minimum Over Pressure Requirements Minimum System Pressure PSIG (Bar) Outlet Water Temperature F (C) 80 - 180 (27 - 82) 12 (0.83) 181 - 185 (83 - 85) 15 (1.03) 186 - 195 (86 - 91) 18 (1.24) Table B5-15. -
Page 27: Model Cfc Water Chemistry Requirements In Accordance With Abma
Model CFC ClearFire Commercial Boilers Water Treatment Even though hot water systems are "closed", some amount of make-up water (up to 10%) will be introduced. This more often than not happens from seal leaks of pumps, or other minimal leaks from valves etc., that go unnoticed. Therefore, proper water chemistry of a hot water boiler is necessary for good operation and longevity, particularly to ensure that free oxygen is removed to prevent waterside corrosion (see Table B5-17). -
Page 28: Glycol Application Guidelnes - Model Cfc
Model CFC ClearFire Commercial Boilers 2) The glycol concentration determines the maximum allowable firing rate and output of the boiler(s). Please refer to the firing rate limitation and corresponding high fire speed settings vs. glycol % in the charts below. 3) Maximum allowable boiler outlet/supply temperature: 185 deg F (85 deg C). -
Page 29: Max Firing Rate Vs. Glycol Concentration
Model CFC ClearFire Commercial Boilers Table B5-19. Max Firing Rate vs. Glycol Concentration Table B5-20. HF Speed Settings vs. Glycol Content Condensation As the Model CFC boiler is a full condensing boiler, condensation will develop during startup of a cold boiler or at any time when the return water temperature is below ... -
Page 30: Condensate Piping Direct To Drain
Model CFC ClearFire Commercial Boilers Table B5-21. Model CFC Maximum Condensation Gallons Per Hour - GPH Boiler Size (Liters Per Hour - L/H) 3.5 (13.2) 5 (18.9) 1000 7 (26.5) 1500 9 (34) 1800 12 (45.4) 2500 17 (64.4) 3300 22 (83.3) Boiler Operating @ maximum in full condensing mode. -
Page 31: Optional Condensate Treatment Assembly
Model CFC ClearFire Commercial Boilers Drain trap Neutralization tank Condensate in To drain Neutralization media Float valve for makeup water Figure B5-23. Optional Condensate Treatment Assembly Notice If a treatment kit is utilized, clearance at the front of the boiler must be provided for servicing the assembly and for periodically adding the neutralizing granules. -
Page 32: Condensate Treatment Tank For Multiple Boilers
Model CFC ClearFire Commercial Boilers 1" NPT Minimum Header Size (Use PVC Pipe or other Nonferrous Material) Condensate Drain Trap Neutralization Tank Neutralization Media 12” Minimum Cond. tank can be To Drain mounted under boiler Figure B5-25. Condensate Treatment Tank for Multiple Boilers Gas Fuel The local Gas Company should be consulted for the requirements for installation Connections... -
Page 33: Gas Piping Schematic
Model CFC ClearFire Commercial Boilers As required As required Gas header - size for boiler room capacity and to minimize pressure loss Same or larger than boiler gas connection size Drip leg required for any vertical run of piping Figure B5-26. Gas Piping Schematic Consideration of volume and pressure requirements must be given when selecting gas supply piping. -
Page 34: Gas Header Piping
Model CFC ClearFire Commercial Boilers From Meter Header Pipe Manual Shut Off Gas Strainer Regulator See Note 1 Relief Valve See Note 5 Model Model Model Model NOTES: 1. Dedicated gas pressure regulator required for each boiler. Gas Header Piping, Typical 2. -
Page 35: Model Cfc Minimum And Maximum Gas Pressure
Model CFC ClearFire Commercial Boilers Table B5-24. Model CFC Minimum and Maximum Gas Pressure Minimum pressure required at gas train connection Boiler Model Natural Gas LP Gas Max. pressure 7" w.c. 11" w.c. 7" w.c. 11" w.c. 28” w.c. 1000 7"... -
Page 36: Model Cfc Minimum Room Clearance Dimensions
Model CFC ClearFire Commercial Boilers Inches Top Clearance Side Clearance Backway Front Between Boilers Figure B5-28. Model CFC Minimum Room Clearance Dimensions Seismic mounting details shown below. Seismic Legs CFC 500-2500 CFC 3300 Figure B5-29. CFC Seismic Mounting Rev. 05-2012... - Page 37 Model CFC ClearFire Commercial Boilers Hot Water Piping Primary/secondary pumps are not necessary with the Model CFC boiler. As its design is such that no minimum flow is required, variable speed or on/off pumps may be employed in the piping scheme. Typical piping arrangements are shown in figures B5-33 through B5-45.
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Page 38: No Primary Loop With Domestic Water And 2-Way Divert Valve
System Supply & Returns Expansion Tank Heating System Pumps Water Makeup Domestic Water Supply System Supply Header 2-Way Diverting Valve On/Off Valve Boiler Drain Domestic Water ClearFire Full ClearFire Full Condensing Condensing Return Header Domestic Water Pump Domestic Cold Water In To Sanitary Drain To Condensate Drain System Returns... -
Page 39: Two Boilers And Three Variable Temperature Zones (No Primary Loop)
BV1 B1 BV1 B1 BV1 B1 Flow Prefabricated Header ClearFire ClearFire Back Pressure Drain Valve Radiant Heating Load Expansion Tank Removable Filling Loop Return Return Run condensate drain to adjacent drain (or via optional condensate pumping unit) Figure B5-36. Two Boilers and Three Variable Temperature Zones (No Primary Loop) -
Page 40: Two-Pipe Primary/Secondary Piping With Domestic Hot Water
BOILER OUTLET (SUPPLY) Heating Load BOILER INLET (RETURN) SECONDARY CONNECTION 12" MAX APART AT ALL SECONDARY CONNECTIONS TO PREVENT FORCED FLOW IN SECONDARY CAUSED BY PRESSURE DROP THROUGH PIPING BETWEEN CONNECTIONS ISOLATION VALVES PURGE COCKS Heating Load AIR SEPARATOR WITH AUTOMATIC AIR VENT DIAPHRAGM EXPANSION TANK WITH FILL VALVE BALANCING VALVES (SQUARE HEAD COCKS) SYSTEM CIRCULATOR... -
Page 41: Two-Pipe Primary/Secondary Piping
BOILER OUTLET (SUPPLY) Heating Load BOILER INLET (RETURN) SECONDARY CONNECTION ISOLATION VALVES PURGE COCKS AIR SEPARATOR WITH AUTOMATIC AIR VENT DIAPHRAGM EXPANSION TANK WITH FILL VALVE Heating Load BALANCING VALVES (SQUARE HEAD COCKS) SYSTEM CIRCULATOR SECONDARY CIRCULATORS INJECTION PUMP (FIXED OR VARIABLE SPEED) FLOW/CHECK VALVES (TO PREVENT GRAVITY OR PRESSURE-DROP-INDUCED FLOW IN SECONDAY CIRCUITS) -
Page 42: No Primary Loop
System Supply & Returns Expansion Y10.1 Motorized Shutoff Tank Y10.2 Motorized Shutoff VK-1 3-Way Mixed Circuit Heating System VK-2 3-Way Mixed Circuit Pumps Water Makeup System Supply Back Pressue Header VK-2 VK-1 Valve Y10.1 Y10.2 Boiler Drain ClearFire Full ClearFire Full Condensing Condensing Return Header... -
Page 43: Domestic Water Heating, No Primary Loop
Expansion Tank Water Makeup Air Vent Line Primary Standby Pump Pump Surge Tank Boiler Drain ClearFire Full ClearFire Full Condensing Condensing To Sanitary Drain To Condensate Drain System Returns Figure B5-40. Domestic Water Heating, No Primary Loop... -
Page 44: Domestic Water With On/Off And 3-Way Valves
System Supply & Returns Expansion Tank Heating System Pumps Water Makeup Domestic Water Supply System Supply Header On-Off Valves Boiler Drain Domestic Water ClearFire Full ClearFire Full Condensing Condensing Return Header Domestic Water Pump Domestic Col Water In To Sanitary Drain System Returns To Condensate Drain Figure B5-41. -
Page 45: Piping 'Hybrid' Boilers
BOILER OUTLET (SUPPLY) BOILER INLET (RETURN) Supply Return ISOLATION VALVES PURGE COCKS AIR SEPARATOR WITH AUTOMATIC AIR VENT DIAPHRAGM EXPANSION TANK WITH FILL VALVE Sensor FLOW/CHECK VALVES SYSTEM CIRCULATOR 130 F 150 F Figure B5-42. Piping ‘Hybrid’ Boilers... -
Page 46: Hybrid' Boilers With Domestic Water
BOILER OUTLET (SUPPLY) Supply BOILER INLET (RETURN) SECONDARY CONNECTION Return ISOLATION VALVES PURGE COCKS AIR SEPARATOR WITH AUTOMATIC AIR VENT DIAPHRAGM EXPANSION TANK WITH FILL VALVE Sensor FLOW/CHECK VALVES SYSTEM CIRCULATOR DOMESTIC PUMP 130 F 12" MAX APART AT ALL SECONDARY CONNECTIONS TO PREVENT FORCED FLOW IN SECONDARY CAUSED BY PRESSURE DROP THROUGH PIPING BETWEEN CONNECTIONS... -
Page 47: Pipe System, Typical (Reverse-Return)
PRIMARY ZONE (WITH THERMOSTAT)- THERMOSTAT CONTROLS BOILER AND CIRCULATOR. HEATING UNITS WITH THERMOSTATIC VALVES. Figure B5-34. 2 Pipe System, Typical (reverse-return) -
Page 48: Zoning With Zone Valves
BOILER OUTLET (SUPPLY) BOILER INLET (RETURN) SECONDARY CONNECTION (BOILER CIRCUIT) ISOLATION VALVES PURGE COCKS (HOSE BIBB) AIR SEPARATOR WITH AUTOMATIC AIR VENT DIAPHRAGM EXPANSION TANK COMBINATION FILL VALVE ZONE VALVES ZONE CIRCULATORS (CIRCULATOR ZONING) SYSTEM CIRCULATOR (ZONE VALVE SYSTEM) Figure B5-35. Zoning with Zone Valves... -
Page 49: Domestic Water With 2 Boilers And 2 Coils
Tube Bundles Can Be In Any Location Exce On Top Of Each Othe Hot Out Auto Air Vent It High Point (Reverse Return For Balanced Flow) Top Relief Pipe Per Code Supply Thermometer Boiler 2 Recirc Pump Pipe To Safe Location Return Two Stage Control... - Page 50 Model CFC ClearFire Commercial Boilers Boiler Room The boiler(s) must be supplied with adequate quantities of uncontaminated air to Combustion and support proper combustion and equipment ventilation. Air shall be free of chlorides, Ventilation Air halogens, fluorocarbons, construction dust or other contaminants that are detrimental to the burner/boiler.
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Page 51: Two Opening Outside Wall Method
Model CFC ClearFire Commercial Boilers VENT VENT 12" MINIMUM FRESH AIR OPENING INTERIOR WALL CLEARFIRE WATER BOILER HEATER FRESH AIR OPENING 12" MINIMUM Figure B5-45. Two Opening Outside Wall Method B. All Air From Outdoors - If all combustion air will be received from outside the building (the mechanical room equipment is linked with the outdoors), the following methods can be used: 1. -
Page 52: Two Opening Ducted Method
Model CFC ClearFire Commercial Boilers VENT VENT 12" MINIMUM OUTLET AIR DUCT INTERIOR WALL EXTERIOR WALL CLEARFIRE WATER FRESH AIR BOILER HEATER INLET DUCT 12" MINIMUM Figure B5-46. Two Opening Ducted Method C. One Opening Method (Figure B5-47) - One permanent opening, commencing within 12 inches of the top of the enclosure, shall be provided. -
Page 53: One Opening Method
Model CFC ClearFire Commercial Boilers VENT VENT 12" MINIMUM FRESH AIR OPENING EXTERIOR WALL CLEARFIRE WATER BOILER HEATER Figure B5-47. One Opening Method When determining boiler room air requirements for unconfined space, the size of the Unconfined Space/ Engineered Design room, airflow, and velocity of air must be reviewed as follows: 1. -
Page 54: Two Opening Engineered Method
Model CFC ClearFire Commercial Boilers VENT VENT FRESH AIR OPENING FRESH AIR OPENING CLEARFIRE WATER BOILER HEATER EXTERIOR WALL EXTERIOR WALL Figure B5-48. Two Opening Engineered Method E. Size the openings by using the formula: Area in square feet = cfm/fpm Where cfm = cubic feet per minute of air Where fpm = feet per minute of air 2. -
Page 55: Stack/Breeching Size Criteria
Model CFC ClearFire Commercial Boilers Notice Consult local codes, which may supersede these requirements. Direct Vent If combustion air will be drawn directly from the outside by means of a duct Combustion connected to the burner air intake, use the following as a guide: 1. - Page 56 Model CFC ClearFire Commercial Boilers suppliers, and any local codes having jurisdiction. Refer to vent manufacturer’s specifications for applicability. Proper installation of flue gas exhaust venting is critical to efficient and safe operation of the Clearfire Boiler. The vent should be supported to maintain proper clearances from combustible materials.
- Page 57 Model CFC ClearFire Commercial Boilers 2. The vent must be at least seven feet above grade when located adjacent to public walkways. 3. Terminate vent at least three feet above any forced air inlet located within ten feet. 4. Vent must terminate at least four feet horizontally, and in no case above or below unless four feet horizontal distance is maintained, from electric meters, gas meters, regulators, and relief equipment.
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Page 58: Horizontal Through The Wall Venting Using Inside Air For Combustion
Model CFC ClearFire Commercial Boilers Inside Air Combustion Intake Flue Gas Vent (w/Screen) 12" Minimum + any Snow Load Figure B5-50. Horizontal Through the wall venting using inside air for combustion The vent must be installed to prevent the potential accumulation of stack condensate in the horizontal run of vent pipe. -
Page 59: Horizontal Flue Through-Wall With Direct Vent Combustion Intake
Model CFC ClearFire Commercial Boilers 24" Minimum Flue Gas Vent (w/Screen) 18" Minimum Air Intake (w/Screen) 24" Minimum Figure B5-51. Horizontal Flue through-wall with direct vent combustion intake These installations utilize the boiler-mounted blower to take combustion air from the outside and vent combustion by-products to the outside. -
Page 60: Stack Design (Single Boiler) Using Room Air
Model CFC ClearFire Commercial Boilers 3. Combustion air supplied from the outside must be free of particulate and chemical contaminants. To avoid a blocked flue condition, keep all the vent caps clear of snow, ice, leaves, debris, etc. Note: Multiple direct stack vent caps must not be installed with one combustion air inlet directly above a stack vent cap. -
Page 61: Stack Sizing Using Outside Air For Combustion (Direct Vent Combustion)
Model CFC ClearFire Commercial Boilers Table B5-26. STACK SIZING USING OUTSIDE AIR FOR COMBUSTION (DIRECT VENT COMBUSTION) DIRECT VENT COMBUSTION AIR -- MAXIMUM ALLOWABLE VENTING LENGTH Boiler Stack/Flue Combustion Air Boiler Maximum length of Maximum length of Direct Vent Flue Connection Boiler Connection Intake Duct &... -
Page 62: Inside Air - Vertical Vent
Model CFC ClearFire Commercial Boilers Vertical Venting See Figure B5-52. Inside Combustion Flue Gas Vent 10'-0" or Less Termination 24" Minimum 48" Minimum CFC Boiler Figure B5-52. Inside Air - Vertical Vent As noted in Paragraph A above, these installations use air from within the boiler room for combustion. -
Page 63: Vertical Stack With Direct Vent Combustion Air
Model CFC ClearFire Commercial Boilers Vertical Venting See Figure B5-53. Direct Vent Combustion Vent Termination 36" Minimum above intak Vent Termination Air Intake (w/Screen) Air Intake (w/Screen) 24" Minimum 48" Minimum 48" Minimum 48" Minimum 12" Minimum above parapet or snow line 12"... -
Page 64: Electrical Connections Cfc 500-2500
Model CFC ClearFire Commercial Boilers Figure B5-54. Electrical Connections CFC 500-2500 Rev. 05-2012... -
Page 65: Electrical Connections Cfc 3300
Model CFC ClearFire Commercial Boilers Figure B5-55. Electrical Connections CFC 3300 Rev. 05-2012... -
Page 66: Cfc Rear Connections
Model CFC ClearFire Commercial Boilers Figure B5-56. CFC Rear Connections Rev. 05-2012... -
Page 67: Cb Falcon Controller
Model CFC ClearFire Commercial Boilers CB FALCON CONTROLLER 1. Control Description - The CB Falcon hydronic control is an integrated burner management and modulation control with a touch-screen display/operator interface. 2. Functionality - The controller is capable of the following functions: •... -
Page 68: Cb Falcon Burner Sequence (Central Heat)
Model CFC ClearFire Commercial Boilers Table B5-29. CB Falcon burner sequence (Central Heat) 1. Heat request detected (CH demand) 2. CH pump switched on 3. Safe Start Check, dynamic ILK input test (if enabled), blower switched on 4. If ILK input and CAPS switch closed and purge rate fan speed achieved, begin 15 second prepurge 5. -
Page 69: Cb Falcon Pinout
Model CFC ClearFire Commercial Boilers 10. CB Falcon Access - There are three levels of access to the CB Falcon controller: • End User Level - read or view parameters; change setpoints. No password required. • Installer/Service Level - read all parameters; enables changing of most parameters. - Page 70 Model CFC ClearFire Commercial Boilers Rev. 05-2012...
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