Crown-boiler BWF229 User Manual

Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heating ProductsP.O. Box 14818 3633 I. StreetPhiladelphia

9 VI Venting There are three basic ways to vent the BWF boiler: • Horizontal (“side wall”) venting using an approved AL29-4C stainless steel vent

10Horizontal Vent System Design 1) See Figure 8 for the general horizontal exhaust configuration. For the purposes of this manual, a “horizontal ex

115) Minimum Vent Pipe Length: 2 ft + (1) 90 degree elbow + terminal 6) Permitted Terminals: • Choice of Tjernlund VH1 series terminal, a 90-de

12 12) Location of Horizontal Vent Terminal – Observe the following limitations on the terminal location: • Terminal must be at least 4 feet

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14 Vertical Vent System Design 1) See Figure 13 for the general vertical stainless steel venting configuration. For the purposes of this manua

154) Maximum Vent Pipe Length: • BWF061 to BWF162 – 39.5 ft + (2) 90 degree elbows + cap • BWF195, BWF229 (using 4” vent pipe): 37 ft + (2) 90 de

1611) Piping supports – Vertical and horizontal sections of piping must be properly supported. See the “Vent System Assembly” section of this manual

17 Removing an Existing Boiler From a Common Chimney In some cases, when an existing boiler is removed from a common chimney, the common v

18 Vent System Assembly 1) General Assembly Notes: a) Where the use of “silicone” is called for in the following instructions, use only the fol

1 I Product Description………………………... 2 II Specifications……………………………….. 2 III Before Installing…………………………….. 3 IV Locating the Boiler……………………

194) Assembly of Flex-L-Intl. Star-34 Vent System: a) Star-34 General Notes: • Do not cut Star-34 vent components. • Support horizontal piping

20 5) Assembly of Z-Flex SVE Series III: a) SVE Series III General Notes: • Non-expanded ends of SVE Series II piping sections

21 l) If a termination elbow or tee is used, a locking band or gear clamp must be used at either side of the wall penetration to prevent shifting o

226) Assembly of Heat Fab Saf-T Vent: a) Saf-T Vent General Notes: • In general, Saf-T Vent pipe sections may not be cut. Exceptions to this are

23 7) Assembly of Protech FasNSeal: a) FasNSeal General Notes: • Do not cut 4” FasNSeal pipe. The male end of 3” FasNSeal ma

24 m) To join FasNSeal to a 4” VH-1 terminal slip the female end of the FasNSeal pipe over the terminal connection so there is an overlap of at lea

25 VII Gas Piping Gas piping to the boiler must be sized to deliver adequate gas for the boiler to fire at the nameplate i

26VIII System Piping CAUTION • INSTALL BOILER SO THAT THE GAS IGNITION SYSTEM COMPONENTS ARE PROTECTED FROM WATER (DRIPPING, SPRAYING, RAIN, ETC)

27 7) Manual Reset High Limit (Required by some codes) – This control is required by ASME CSD-1 and some other codes. Install the high limit in the

28 2) Gravity and “Large Water Volume” Systems – The piping shown in Figure 29 will minimize the amount of time that the boil

2I Product Description The BWF series boiler is a cast iron gas fired boiler designed for use in forced hot water heating systems. The BWF is int

296) Air Handlers – Where the boiler is connected to air handlers through which refrigerated air passes, use flow control valves in the boiler pipin

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31 IX Wiring WARNING All wiring and grounding must be done in accordance with the authority having jurisdiction or

32 Wiring Variations 1) Multiple Circulator Zones – Figure 33 shows wiring for two or more circulator zones using Honeywell R845As. One fewer R845A

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34BWF Control System – Sequence of Operation (Refer to Figures 35 and 36 for BWF ladder and connection diagrams) 1) A call for heat from the therm

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36 IX Start-up and Checkout NOTE SAFE LIGHTING AND OTHER PERFORMANCE CRITERIA WERE MET WITH THE GAS MANIFOLD AND CONTROL ASSEMBLY PROVIDED ON THE BO

37 A. This appliance is equipped with an ignition device which automatically lights the pilot. Do try to light the pilot by hand.B.

38c) If the line pressure falls outside of these limits, find and correct the cause of the problem before proceeding further. d) Connect a manome

3 III Before Installing 1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in stri

39 FIGURE 38: PILOT BURNER FLAME

40X Service and Maintenance The following routine maintenance should be performed on an annual basis: 1) Turn off power to the boiler. 2) Inspect

4111) Clean the bottom surfaces of the heat exchanger. 12) Put a light in the combustion chamber and look through the flue passages from the top to

42 3) Vacuum Switch – This boiler is equipped with a vacuum switch that is designed to prevent burner operation if the combustion fan does not opera

43 XII Troubleshooting The following three pages contain troubleshooting charts for use in diagnosing control problems. To use these charts, go to

44 120 volts across black and white transformer primary leads on back of R8285 ? Thermostat calls for heatCirculator start?

45 BWF Troubleshooting Chart (contd.) Caution: Read page 43 before attempting to use this chart. Pilot light? 24 volts between termina

46 Does spark stop when pilot lights?24 volts across terminals 2&3 at S8670?Spark across ignitor/

47 The following parts may be obtained from any Crown distributor. To find the closest Crown distributor, consult the area Crown representative

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4 3) Do not install this boiler in an area where large amounts of airborne dust will be present, such as a workshop. D

49 61 95 128 162 195 22941 1" BURNER WITH PILOT BRACKET 150500 1 ea. 1 ea. 1 ea. 1 ea. 1 ea. 1 ea.42 1" BURNER LESS PILOT BRACKE

50 1” Burner Components 50mm Burner Components

51 CAUTION Vacuum switch part numbers shown below for use on boilers installed at altitudes below 20

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Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heating ProductsP.O. Box 14818 3633 I. StreetPhiladelphia

5 V Air for Combustion and Ventilation Sufficient fresh air must be supplied for both combustion and ventilation. Provisions for combustion, ven

6If the boiler is in a confined space – Provide two openings into the boiler room, one near the floor and one near the ceiling. The top edge of the u

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