Crown Boiler CWI138, CWI172, CWI345 F. Electrical Wiring Connections, G. Complete Installation

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F. Electrical Wiring Connections

(Also refer to wiring diagrams in Part X of the installation manual)

1)A pre-wired limit control (L8148E or L8124E) specific to the control package ordered with the boiler has been provided by the factory.

2)Blocked Vent Switch - Locate the two wires marked “8”. Connect these wires to the terminals on the blocked vent switch (it does not matter which of these wires is connected to which terminal on the blocked vent switch). Install the strain relief provided in the hole in the jacket through which these wires pass.

3)Flame Roll-Out Switch:

a)Route the wire marked “10” through the bushing located on the left jacket panel and connect it to one side of the flame roll-out switch.

b)Route the wire marked “7” through the bushing located on the left jacket panel and connect it to the other side of the flame roll-out switch.

4)Standing Pilot Gas Valve (Honeywell VR8200, VR8300 or Robertshaw Model 7000ERHC-S7C) - Connect wire “6” to the “TH” terminal on the gas valve. Connect wire “5” to the TR terminal on the gas valve.

Note: Boilers equipped with the Robertshaw 7000ERHC are also equipped with a Honeywell Model V8295 gas valve to provide redundancy. This valve should be factory pre-wired to the 7000ERHC with one black lead connected to the “TH” terminal and the other black lead connected to the “TR” terminal on the 7000ERHC gas valve.

5)Honeywell Intermittent Ignition System:

a)Mount the S8600 series ignition control to the left side of the jacket just above the gas manifold using the standoff bracket supplied and #10 sheet metal screws.

b)Locate the intermittent ignition harness plugged into the gas valve assembly. This harness has red, blue, and yellow wires and has molex plugs on both ends. Plug the loose end of the harness into the S8600 module.

c)Plug the green burner ground wire numbered “4” to terminal 4 on the S8600. Check that the ground wire has been routed under the burners and that the other end is attached to the pilot assembly under the lower mounting screw.

d)Plug the red wire with the yellow trace, numbered “5”, to terminal 5 on the S8600 module.

e)Plug the black wire with the white trace, numbered “6”, to terminal 6 on the S8600 module.

f)Plug the orange Pilot Ignition Cable, numbered “9”, to terminal 9 on the S8600 module. Verify that this cable has been routed under the burners and that the other end is plugged onto the pilot assembly electrode.

G. Complete Installation

Follow the instructions that start on page 1 of this manual to complete boiler installation.

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Contents Models Gas-Fired Natural Draft Water Boilers INSTALLATION INSTRUCTIONSCWI Series These instructions must be affixed on or adjacent to the boilerTable of Contents I Product DescriptionII Specifications FIGURE 1 CWI BOILERS - GENERALCONFIGURATIONTABLE 1 CWI SPECIFICATIONS III Before Installing IV Locating the BoilerV Air for Combustion and Ventilation For Buildings of Other than Unusually Tight Construction ForBuildingsofUnusuallyTightConstructionExample FIGURE3BOILERINSTALLEDINCONFINEDSPACE, ALL AIR FROM INSIDE FIGURE 4 ALL AIR FROM OUTDOORS, VENTILATED CRAWL SPACE AND ATTICFIGURE 5 ALL AIR FROM OUTDOORS VIA VENTILATED ATTIC FIGURE 6 ALL AIR FROM OUTDOORS, USING OPENINGS INTO BOILER ROOM VI Venting Removing an Existing Boiler from a Common Chimney FIGURE8 CWI BOILERTYPICALVENTSYSTEM INSTALLATION AND COMPONENTS FIGURE 9 VENT DAMPER INSTALLATION DETAILSVII Gas Piping VIII System Piping StandardPipingDANGER 1413 Piping for Special SituationsFIGURE 11 STANDARD BOILER PIPING FIGURE 12 INDIRECT WATER HEATER BOILERSIDEPIPINGFIGURE13 BOILERBYPASSPIPING FIGURE14 ISOLATIONOFBOILERFROMSYSTEMWITHAHEATEXCHANGER FIGURE15 BOILERPIPINGWITHCHILLERIX TANKLESS HEATER PIPING A mixing valve does not eliminate the risk of scalding Feel water before showering or bathingFIGURE 17TANKLESSHEATERPIPING IX Wiring SingleZoneWiringFIGURE 20 WIRING DIAGRAM, STANDING PILOT WITH TANKLESS HEATER Wiring Variations FIGURE23ZONEWIRINGUSINGHONEYWELLV8043FZONEVALVES FIGURE 22 CIRCULATOR ZONEWIRING USING HONEYWELLR845AsFACTORY BOILER WIRING NOT SHOWN - SEE FIGURES 18 FACTORYWIRING NOT SHOWN - SEE FIGURES 18CWI Control System - Sequence of Operation Sequence of Operation, Standing Pilot, Less Tankless HeaterSequence of Operation, Standing Pilot, With Tankless Heater Sequence of Operation, Intermittent Ignition, Less Tankless Heater Sequence of Operation, Intermittent Ignition, With Tankless HeaterXI Start-up and Checkout Safety Control Operation - Standing Pilot and Intermittent Ignition2726 FIGURE 24 STANDING PILOT BURNER FLAMEPage Page TO TURN OFF GAS TO APPLIANCE FOR YOUR SAFETY READ BEFORE OPERATINGLIGHTING INSTRUCTIONS LIGHTING INSTRUCTIONS FOR BOILERS EQUIPPED WITH HONEYWELLFOR YOUR SAFETY READ BEFORE LIGHTING LIGHTING INSTRUCTIONS FOR BOILERS EQUIPPED WITH ROBERTSHAW7000ERHC SERIES GAS VALVES STANDING PILOT TO TURN OFF GAS TO APPLIANCE FOR YOUR SAFETY READ BEFORE LIGHTINGOPERATING INSTRUCTIONS VR8204 AND VR8304 SERIES GAS VALVES INTERMITTENT PILOT7000DERHC SERIES GAS VALVES INTERMITTENT PILOT FIGURE 27a GASVALVEDETAIL-HONEYWELLVR8200ORVR8300STANDINGPILOT FIGURE 28b GASVALVEDETAIL-ROBERTSHAW 7000DERHC INTERMITTENT IGNITIONXI Service and Maintenance Heat Exchanger Cleaning Procedure XIII Troubleshooting START C1&C2?5&6 on National Fuel Gas CodeSTART L2 ?C1&C2? T&TV?C2 and Standing Pilot Ignition System Troubleshooting Chart Caution Read page 36 before attempting to use this chartIntermittent Ignition System Troubleshooting Chart XIV PARTS Page These Valves Piped in Series to Provide Redundent Shut-off 1/4 Pilot Tubing Used with Robertshaw Valves40mm BURNERS ONLY Page KEY # Page B. BaseAssembly Preparation Appendix A Knockdown Boiler Assembly InstructionsA. Before Installing C. Heat Exchanger and Flue Collector InstallationFIGUREA1 BASE, HEAT EXCHANGER, FLUE COLLECTORASSEMBLY D. Gas Valve Installation E. Control and Trim InstallationFIGURE A2 JACKET INSTALLATION F. Electrical Wiring Connections G. Complete InstallationFIGURE A3 TAPPING LOCATIONS SEE TEXT FOR TAPPING USES P.O. Box 3633 I. StreetPhiladelphia