PB Heat Gas Boiler manual Electrical, Wiring, Sequence of Operation

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ELECTRICAL

6. ELECTRICAL

Install all electrical wiring in accordance with the National Electrical Code, ANSI/NFPA 70, and local requirements.

c)An example of this wiring using a Honeywell R845A relay is shown in Figure 6.2

NOTICE

This unit when installed must be electrically grounded in accordance with the requirements of the authority having jurisdiction or, in the absence of such requirements, with the current edition of the National Electrical Code, ANSI/NFPA 70.

A.WIRING

1.Refer to Figures 6.1 for connecting the power supply to the boiler.

Figure 6.1: Wiring Connections to Boiler Junction Box

2.Connect boiler to a 110 volt, single phase, 60 hertz electrical supply line with a fused disconnect switch. The boiler is fused for a load of 6.3 amperes.

3.The boiler electrical connection is located on the left side of the boiler in the junction box which houses the service switch.

4.Wire the burner service switch in the hot line to the boiler as shown in Figure 6.1.

5.Make sure to maintain correct polarity on the incoming power supply wires. If polarity is reversed, the boiler control will not sense the main burner flame.

6.Connect the ground wire from the incoming power supply to the green ground screw in the junction box. Also, the boiler ground should be connected to this screw.

7.Figure 6.1 shows connections to system circulator.

a)The maximum current load for the circulator circuit is 4.0 amperes.

b)For loads greater than 4.0 amps, isolate the circulator using a switching relay.

Figure 6.2: Wiring Circulator with R845A Switching Relay

8.The thermostat connections are shown in Figure 6.1 or 6.2. The setting for the thermostat anticipator is

0.56amps.

9.The boiler control board and factory wiring are shown in figure 6.3.

B.SEQUENCE OF OPERATION

1.System Power-Up:

a) When power is first applied to the boiler, the control will initially run through a self-diagnostic routine. The interface unit shows the system supply temperature.

b) Next, it will power the combustion air fan for a 10 second purge cycle.

c) Finally the combustion air shuts down and if there is no call for heat the control board enters a standby mode.

2.Heating Cycle:

a) When the thermostat calls for heat (closing the contact between the two gray [TT] wires) and the boiler control senses a supply temperature lower than the set point by more than the differential, the boiler initiates a heating cycle.

b) The control then powers the combustion air fan at the speed prescribed for the particular boiler model and performs a 6 second pre-purge of the combustion chamber.

c) 0.5 second before the pre-purge is complete power is applied to the spark igniter.

d) Once the pre-purge cycle is complete, the fan speed decreases to the programmed ignition speed.

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Contents Peerless Pinnacle Table of Contents Installation Sequence Using this ManualSpecial Attention Boxes Preinstallation General Accessibility ClearancesCodes & Regulations Combustion and Ventilation AIRAccessibility Clearances Floor Standing Units Boiler SET-UP GeneralWall Hung Boilers Floor Mounted BoilersOperating Parameters Water Piping and ControlsSystem Components Piping Symbol Key Boiler Inputs and Outputs Net I=B=R Output Model Btu/hr kWFlow Rate and Pressure Drop Boiler Model Feet metersRecommended Circulators Boiler Grundfos CirculatorSystem Piping Freeze Protection Pinnacle Circulator Sizing GraphOne Boiler, Primary/Secondary with Two Zones Zone Circulator Water Piping and Controls Water Piping and Controls Water Piping and Controls Three Boilers, Primary/Secondary with Four Zones Zone Valves Special Applications Boiler in conjunction with a Chilled Water System GAS Supply Piping Installation GAS PipingFuel Line Sizing Feet PipeGAS Supply Piping Operation Gas Supply Piping Sediment TrapRecommended Vent CO² Settings Firing Gas Type Rate Main GAS Valve OperationApproved Materials for Exhaust Vent and Intake AIR Pipe Exhaust Vent / AIR Intake Pipe LocationExhaust Vent and Intake AIR Pipe Sizing Fitting Equivalent Length Table Fitting DescriptionExhaust Vent and AIR Intake Pipe Installation Vent Termination Kits Stock Description CodeVENTING, Inlet AIR and Condensate PI-T50 & PI-T80 Sidewall Venting with 2 Pipe 2 Vent Kit Venting with 3 Pipe Venting with 3 Pipe Concentric Vent Kit With 2 Pipe With 2 Pipe Concentric Vent KitExhaust Tapping for Vent Sample Condensate Drain InstallationBoiler Removal from Common Venting System Electrical WiringSequence of Operation Boiler Control Board Wiring Schematic Safety Interlocks Control FunctionsInstaller Menu Parameter Function Status Menu Description CodeSTART-UP Procedures Completing the InstallationFor Your Safety Read Before Operating Lighting and Operating ProceduresCHECK-OUT Procedure Boiler Error TroubleshootingBoiler Fault P125 Control Board Fault Codes Fault Code Description Corrective ActionMaintenance General with Boiler in USEWeekly with Boiler in USE Annually Before Start of Heating SeasonGAS Leaks Reset thermostats Important Make Boiler Dimensions & Ratings Boiler DimensionsPI-80/PI-140/PI-199 Dimensions Lbs Sch 40 PVCRepair Parts Repair Parts Advantages of the P125 Control Board Appendix A. WHAT’S NEW with the P125 Control BoardP125 Control Board Quick Reference P125 Control Board VS. WHA Control Board Comparison Figure A.2Comparative Control Board Sequence of OperationPeerless Pinnacle

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