Raypak 992B manual Troubleshooting, Step

Page 57

TROUBLESHOOTING

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Does the power switch

provide power to the

Check the switch

control panel?

NO

and/or line voltage

Replace ignition module

Is there a Call For

YES

Heat?

Unit is in standby mode.

Check all safety limit

NO

YES

devices and voltage from

Reattach.

the transformer to J10 on

Is Disable jumper intact? (J1)

CPW board.

NO

NO

Is there 120VAC at J8

NO

YES

Connector on the CPW board?

Does F2 on

ignition module

NO

have 120VAC?

Do the combustion air

YES

YES

blowers come on?

Is 24VAC at present at TH (J3 & J12 on CPW

YES

NO

YES

board and orange wire on ignition module)?

Check flow switch, all

Are the blower lights

NO

Is air pressure switch(s) and

connectors on CPW board

illuminated?

and controller.

J2 of CPW board (N.O.)

powered?

Check the fan relay. Is there

120VAC at K3 relay?

YES

YES

YES

NO

Is there continuity from the

NO

Is 24VAC at PS on

fan relay to fan(s)?

YES

ignition module? Is

Does air pressure switch(s)

Replace fan relay

connecting plug

have correct pressure?

secure?

(1

.4” W.C.)

Replace fan

YES

Does igniter prove?

Replace air

NO

pressure switch

NO

Correct the air settings or

YES

you may have to clean

Check Amp draw during

Is air switch

YES

heat-up for greater than

bouncing?

burners, heat exchanger

and/or air filter.

3.1 Amps.

Is the flame

NO

Replace HSI

NO

sensor signal to

YES

the ignition

module greater

Readjust to 3.5” W.C.

than 1 uA DC?

NO

Are the gas valve

NO

gas.

settings correct?

Is the unit running?

YES

YES

NO

Is the unit running?

Is static and dynamic inlet

manifold gas pressure correct?

Replace gas valve

YES

YES

NO

Is downdraft present?

		NO
Call our Technical Service Department
Call our Technical Service Department
1-800-947-2975 Outside California	The unit is okay		Clean or replace flame sensor
1-800-627-2975 Inside California	The unit is okay

57

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Contents Installation & Operating Instructions Page Contents Pay Attention to These Terms Installations at Elevation Before InstallationProduct Receipt Model IdentificationComponent Locations Back Component LocationsModel Quantity Vent Size Gas Burners Blowers General InformationValves Model Burners per Valve Stages Fire at StageGeneral Safety Time/Temperature Relationships in ScaldsWater Time to Produce Serious Temp Burn Installation Codes InstallationEquipment Base StackingTable D Vent/Air Inlet Termination Clearances Indoor Installations Outdoor InstallationsClearances Reversing Air Filter Combustion and Ventilation AirDirect Vent Indoor UnitsConventional Combustion Air Supply InstallationsTruSeal Combustion Air All Air from Inside the BuildingWater Piping Canadian InstallationsGeneral Reversing Water ConnectionsCold Water Operation Relief Valve Piping Hydrostatic TestTemperature & Pressure Gauge Hydronic HeatingPump Selection Piping Pressure Drop in Feet of Head Feedwater RegulatorAir-Separation/Expansion Tank Three-Way ValvesPool Heating Potable Water and Space HeatingWinterizing Your Heater Automatic Chlorinators and Chemical FeedersPool/Spa Water Chemistry Water Hardness Gas SupplyPH of Water Total Dissolved SolidsReversing Gas Supply Connection Gas Supply ConnectionModel Table I Maximum Equivalent Pipe LengthCheck the Power Source Electrical Power ConnectionsGas Supply Pressure Field-Connected ControllersMaking the Electrical Connections Field Wiring ConnectionOn-Off Wiring Connections Flue Exhaust Tee VentingModel Diameter Order Number Appliance CategoriesVent Terminal Location Support of Vent StackCombustion Exhaust Certified Combustion AirInstallations Canadian InstallationsChanging the Flue Outlet Venting Configurations Venting Installation TipsInstallation Natural Draft Vertical Venting CategoryCommon Venting System TerminationCertified Vertical Venting Combustion Air Air Inlet Model HeightHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryModel Certified Maximum Combustion Air Inlet Direct Vent Horizontal Through- the-WallVenting EquivalentDirect Vent Vertical Direct Vent VerticalOutdoor Installation ControlsFreeze Protection Models 992B-1262B Heater Sequence of OperationExternal Lights Color Indication Models 1532B 1802B Page Page Models 2002B 2342B Page Page Flow Switch High Limit Manual ResetIgnition Module Operating ControlLow Water Cut-Off Optional High and Low Gas Pressure SwitchesPump Time Delay UDB Diagnostic BoardUDB Fault History 87%-Efficiency Boilers Special Instructions Water PipingVenting Appliance Categories Vertical Venting Category Vent Terminal LocationCondensate Management Combustion 40’ 75’ 2072BE Air 2342BE Certified Maximum Combustion Air Air Inlet Model VentingDirect Vent Horizontal Through- the-Wall 992BE 75’ 100’ 1262BE Galvanized Steel 1532BE Category 25’ Wiring Diagram-Models 992B-1262B Wiring Diagram-Models 1532B-2342B Pre Start-up START-UPBlower Adjustment Main Burner AdjustmentStart-Up Leak Test Procedure Dual-Seat Gas Valves Safety InspectionFollow-Up Pilot Turn-Down TestLeak Test Post Start-Up CheckOperation Lighting InstructionsTo Turn Off Gas To Appliance Step TroubleshootingMaintenance Suggested Minimum Maintenance SchedulePreventive Maintenance Schedule Semi-Annually WeeklyAnnually As RequiredInside Air Contamination AppendixLimited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P START-UP Checklist for FAN-ASSISTED Raypak Products Page Page Page

992B specifications

The Raypak 992B is a highly regarded commercial boiler known for its efficiency and reliability in heating applications. Designed for a range of installations, it is particularly favored in schools, hotels, and various commercial settings where dependable heating is crucial. One of the standout features of the Raypak 992B is its impressive thermal efficiency rating, often exceeding 90%. This efficiency translates into lower energy costs and reduced environmental impact, making it a smart choice for eco-conscious businesses.

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