Crown Boiler BSI345, BSI241, BSI276, BSI379 Electrical Wiring Connections, 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 junction box assembly specific to the control package ordered with the boiler has been provided by the factory.

2)Orient the junction box so the black relay, which is mounted to the outside of the junction box, is facing down.

3)Mount the junction box assembly to the right side jacket using the holes provided (See Figure 1 in the installation manual). To do this, temporarily remove the transformer and attach the box with two #10 sheet metal screws through the holes on the back side of the box.

4)Pressure Limit Switch - Route the grey wire pair through the bushing on the pressure limit control and connect one of the leads numbered “0” to one of the two terminals on the switch and the other lead numbered “0” to the other terminal on the switch.

5)Blocked Vent Switch - Locate the two wires marked “8” (one of these wires is black, the other is black with a white trace). 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.

6)Flame Roll-Out Switch:

a)Route the black 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 red 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.

7)McDonnell Miller Series 67 Low Water Cutoff:

a)Route the black wire numbered “1” and the black wire with the white trace numbered “2” through the fitting on the end of the low water cutoff.

b)Connect lead numbers “1” and “2” to the low water cutoff terminals marked “1” and “2” respectively.

8)Hydrolevel CG-400 Probe Low Water Cutoff:

a)Mount the end of the BX cable containing the 3-wire Molex plug and the single red wire to the control box with the BX cable fitting nut supplied.

b)Insert the Molex plug into the receptacle mounted on the CG400 terminal board.

c)Attach the red wire to the terminal marked “BURNER”.

9)Standing Pilot Gas Valve (Honeywell VR8200, VR8300 or Robertshaw Model 7000ERHC-S7C) - Connect wire “6” (black with a white trace) to the “TH” terminal on the gas valve. Connect wire “5” (red with a yellow trace) 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.

10)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 BSI Series Table of Contents Product DescriptionII Specifications BSI SpecificationsIII Before Installing IV Locating the BoilerAir for Combustion and Ventilation For Buildings of Other than Unusually Tight Construction ForBuildingsofUnusuallyTightConstructionBOILERINSTALLEDINCONFINEDSPACE, ALL AIR from Inside ALL AIR from OUTDOORS, Using Openings Into Boiler Room VI Venting Removing an Existing Boiler from a Common Chimney BSI Boilertypicalventsystem Installation and Components VII Gas Piping GasconnectiontoboilerViii System Piping General Piping NotesPipingInstallation Common NEAR-BOILER Piping Mistakes IX Indirect Water Heater Piping Indirectwater Heater BOILER-SIDE PipingWiring Indirect Water Heater Wiring Wiring Indirectwater Heater to Boiler BSI Control System Sequence of Operation Sequence of Operation, Standing PilotVent Damper Note Less Vent GAS Valve BSI379 Honeywell VR8204/VR8304 Series GAS Valves BSI069 Robertshaw XI Start-up and Checkout 2423Standing Pilot Burner Flame For Your Safety Read Before Operating For Your Safety Read Before Lighting For Your Safety Read Before Lighting Position Indicator High Altitude Burners GASVALVEDETAIL-HONEYWELLVR8200ORVR8300STANDINGPILOT XII Service and Maintenance On a continuous basisOn at least a weekly basis On an annual basisPage Heat Exchanger Cleaning Procedure Xiii Troubleshooting Start END Start END Standing Pilot Ignition System Troubleshooting Chart Intermittent Ignition System Troubleshooting Chart XIV Parts Page KEY # Page Boilers only Page Appendix a Knockdown Boiler Assembly Instructions Before InstallingFIGUREA1 BASE, Heat EXCHANGER, Flue Collector Assembly Gas Valve Installation Figure A2 Jacket Installation Electrical Wiring Connections Complete InstallationFigure A3 Tapping Locations see Text for Tapping Uses Crown

BSI069, BSI345, BSI207, BSI172, BSI241 specifications

Crown Boiler Company is renowned for its high-quality heating solutions, with a diverse range of models designed to meet various residential and commercial needs. Among their popular offerings are the BSI series, which includes the BSI379, BSI138, BSI310, BSI276, and BSI103 models. Each of these boilers comes with distinct features, technologies, and characteristics that cater to different applications and preferences.

The Crown Boiler BSI379 is a powerful and efficient boiler designed for residential use. It features a stainless steel heat exchanger that enhances durability and improves heat transfer efficiency. The BSI379 operates on natural gas, providing a high thermal efficiency rating which helps to reduce energy costs. With a compact design, it can fit conveniently in various installations, making it a versatile choice for homeowners.

The BSI138 model is another excellent option for smaller residential spaces. It is equipped with advanced technology that allows for quiet operation and minimal environmental impact. This boiler also offers a straightforward control interface, making it easy for homeowners to adjust settings according to their heating needs. The BSI138's lightweight construction and small footprint allow for flexible installation options.

Moving on to the BSI310, this model is designed for medium to larger-sized homes. It features an electronic ignition system that ensures reliable start-up while minimizing gas consumption. The BSI310 also incorporates multiple safety features, including pressure relief valves and limit controls, enhancing user safety during operation. Its robust design ensures efficient heating even in the coldest months.

The BSI276 model is characterized by its sealed combustion design, which improves indoor air quality by preventing drafts and ensuring that all combustion air is drawn from outside. This model is ideal for energy-conscious homeowners seeking environmentally friendly options. Its high-efficiency rating translates to significant energy savings over time, making it a financially wise investment.

Finally, the BSI103 is an entry-level model that retains the quality and reliability associated with Crown Boilers. It is particularly suited for smaller homes or apartments and offers ease of use and maintenance. The BSI103 combines affordability with efficiency, providing a cost-effective heating solution without compromising on performance.

In summary, the Crown Boiler BSI series, comprising the BSI379, BSI138, BSI310, BSI276, and BSI103, showcases a blend of innovative technologies and features. With options suitable for various household sizes and energy needs, Crown Boiler continues to deliver reliable heating solutions that cater to modern homeowners’ demands for efficiency, safety, and convenience. Each model's unique characteristics ensure that users can find the perfect boiler to meet their heating requirements.
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