1Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heatings ProductsP.O. Box 14818 3633 I. StreetPhiladelph
10VI VentingVent installation must be in accordance with local building codes, or the local authority having jurisdiction, or Chapters 7 and10 of the
112) Acceptable Vent Connectors - The following may be used for vent connectors:• Listed type B or L Gas Vent• Single Wall Galvanized Pipe - Use 0.018
127) Do not connect the boiler into a chimney flue serving an open fireplace or other solid fuel appliance.8) Prior to boiler installation, inspect ch
13connected to the common venting system are not in operation.a) Seal any unused opening in the common venting system.b) Visually inspect the venting
14VIII System PipingStandard PipingFigure 11 shows typical boiler system connections on a single zone system. Additional information on hydronic syst
156) Low Water Cut-Off (Required in some situations) - A low water cutoff is required when the boiler is installed aboveradiation. In addition, some
162) Large Water Volume Systems - The piping shown in Figure 13 will minimize the amount of time that the boiler operates withreturn temperatures belo
17 FIGURE 13: BOILER BYPASS PIPING FIGURE 14: ISOLATION OF BOILER FROM SYSTEM WITH A HEAT EXCHANGER5)Piping with a Chiller - If the boi
18IX WiringSingle Zone Wiring1) 120 Volt Wiring - The boiler should be provided with its own 15A branch circuit with fused disconnect. All 120 vol
19 FIGURE 16: WIRING DIAGRAM, CONTINUOUS IGNITION (STANDING PILOT) SYSTEM17 FIGURE 17: WIRING DIAGRAM, INTERMITTENT IGNITION
2INSIDE FRONTCOVER(LEAVE BLANK)
20Wiring Variations1) Multiple Circulator Zones – Figure 18 shows wiring for two or more circulator zones using Honeywell R845As. OneR845A is required
21AWI/TWI Control System – Sequence of Operation(Refer to Figures 16 or 17 for ladder and connection diagrams)Sequence of Operation, Standing Pilot1)
22Sequence of Operation, Intermittent Ignition1) When the boiler is energized, 24 volts is immediately applied to terminals “1” (blue) and “4” (yell
23X Start-up and CheckoutUse the following procedure for initial start-up of the boiler:1) Make sure that the boiler and system are filled with water
2413) Run gas valve safety shutdown test:• For standing pilot boiler models, disconnect the thermocouple from gas valve. Both pilot burner and main bu
2520) After the boiler has operated for approximately 30 minutes, check the boiler and heating system piping for leaks.Repair any leaks found at once.
26A. This appliance has a pilot which must belighted by hand. When lighting the pilot, followthese instructions exactly.B. BEFORE LIGHTING smell all a
27A. This appliance is equipped with an ignitiondevice which automatically lights the pilot.Do trytolightthepilotbyhand.B. BEFORE LIGHTING smell all a
28 FIGURE 24: GAS VALVE DETAIL - STANDING PILOT FIGURE 25: GAS VALVE DETAIL - INTERMITTENT IGNITION26
29XI Service and MaintenanceThe following routine maintenance should be performed on an annual basis:1) Turn off electrical power and gas supply to th
3Table of ContentsI. Product Description ... 1II. Specifications ...
30Heat Exchanger Cleaning Procedure1) Turn off electrical power and gas supply to the boiler2) Disconnect the damper and vent connector from the boile
31 The following four pages contain troubleshooting charts for use in diagnosing control problems. To use these charts, go tothe box marked “Start”
3230AWI/TWI Troubleshooting ChartCaution: Read page 29 before attempting to use this chartThermostatcalls for heatCirculatorstart?120 voltsat L1&L
3331Mainburnerslight?24 voltsacrossB1 &B2 ?Ref er to standing pilot orintermittent ignitiontroubleshooting chart(page 32 or 33).*Defective damper*
3432Standing Pilot Ignition System Troubleshooting ChartPilot lit?Mainburnerslight?YTurn control ongas valve toPILOT.Depressred button andlight pilot.
3533Doesspark stopwhen pilotlights?24 voltsacrossterminals 2&3at S8600?Sparkacrossignitor/sensorgap?YCan youhearsparking?*FaultyS8600module*Break
36XIII PARTS The following parts may be obtained from any Crown distributor. To find the closest Crown distributor, consult the areaCrown representa
3735Base-Block-Hood
3836CAUTION: MAIN BURNER ORIFICE SIZES SHOWN ARE FOR BOILERS INSTALLED AT ALTITUDESBELOW 2000 ft37619512816219522926229541 1" BURNER WITH PILOT B
393750mm BURNER COMPONENTS1” BURNER COMPONENTS
42 FIGURE 1B: “LEFT PIPED” CONFIGURATION FIGURE 1C: “TOP PIPED” (T-AWI OR T-TWI) CONFIGURATION
403837619512816219522926229575 LEFT SIDE JACKET PANEL 1 ea. 700301 700301 700301 700301 700301 7003015 7003015 7003015 700301576 RIGHT SIDE JACKET PAN
4139Jacket/Components
42Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heatings ProductsP.O. Box 14818 3633 I. StreetPhiladelp
5TABLE 1: SPECIFICATIONSNotes:Suffix E = Intermittent Ignition, Suffix S = Standing PilotAdd Suffix N for Natural Gas or Suffix L for Propane Gas to b
6III Before Installing1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordancew
74) The boiler should be located as close to the chimney as possible.5) Do not install this boiler over carpeting.6) Do not install this boiler direct
8b. Find the volume of the room in cubic feet. The volume of the room in cubic feet is:Length (ft) x width (ft) x ceiling height (ft)In calculating t
9For Buildings of Unusually Tight Construction1) Openings must be installed between the boiler room and the outdoors or a ventilated space, such as an
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