Raypak 992B manual

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9.24 VAC is applied to the blue power light located on the status display board.

10.24 VAC is also applied to the red LED safety shut- down light on the front status board until the safeties have been proven.

11.24 VAC is applied to the alarm circuit (optional). If the E-5 sales option (Alarm) is included a 5-sec- ond time delay relay will not allow the alarm to sound unless a safety or limit circuit stays ener- gized for more than 5 seconds.

12.Power is applied to terminal P1-1 of the Universal Diagnostics Board. 24 VAC power is then applied in series to all typically closed safeties wired into the heater. All safeties are verified to ensure that it

is safe to operate the heater.

The safety components wired into the diagnostic board are: low water cut-off (optional), blocked vent switch, manual vent temp switch (optional), manual reset high limit, low gas pressure switch, high gas pressure switches (optional), and auto- reset high limit (optional).

13.If any of the safeties do not close, a signal is sent to the Universal Diagnostics Board to indicate a safety fault.

14.Power is applied to terminal TP-1 of the Economaster II pump delay to energize the circuit board.

15.Once all safeties are closed and verified, a 24 VAC signal is output from the Auto High Limit to J5 pin 3 of the CPW board of the heater.

16.24 VAC power is now sent to the coil of relay K-1.

17.Relay K-1 (N.C.) will now be energized, and opens the N.C. contacts to disable the alarm (optional) and turns off the red LED safety shutdown light on the front status board.

18.The common terminal of the Auto High Limit will now send a 24 VAC signal to pin 1 of the “panel switch”.

19.The “panel switch” (rocker switch) located at the lower left front of the control compartment is now powered. If the switch is “ON” and there is no call for heat (CFH), the heater is in standby mode.

20.After the standby switch is placed into the “ON” position, a 24 VAC signal is sent to the “enable/disable” connection (normally jumpered).

21.24 VAC switched power is applied to the S24V ter- minal on ignition modules 1 and 2.

22.When the “enable/disable” contacts are closed, the 24 VAC signal travels to pin 1 of the stage 1 connection and waits for a CFH.

23.When a CFH occurs, a 24 VAC signal is sent to the CFH light on the status panel located on the lower left front of the control compartment.

24.Power is also sent from pin 2 of the stage 1 con- nection to pin P1-3 of the universal diagnostic board.

25.Power is now sent to terminal TP4 of the Economaster II to energize the relay and close the contacts.

26.Power is waiting at the common terminal of the flow switch waiting for closure and sufficient water flow.

27.The heater pump is energized upon relay closure of the Economaster II.

28.Upon sufficient flow from the heater pump, the flow switch contacts will close.

29.If there is insufficient flow and the flow switch does not close, a 24 VAC signal is sent to the Universal Diagnostics Board to indicate the fault.

30.The flow light is energized; located on the front status panel.

31.A 24 VAC signal is also sent to the “TH” terminal located on ignition module one.

32.Once the 24 VAC “TH” signal is received at ignition module one, the internal contacts between F1 and F2 close sending a 120 VAC signal to the 120 VAC pilot duty terminals, located at J14 on the circuit board.

33.The 120 VAC signal continues to the coil of the blower relay K-4 (N.O.).

34.The 120 VAC signal continues to the 120 VAC safety terminals located at J13 on the circuit board.

35.When the coil on relay K-4 is powered, the N.O. relay contacts close and energize the blowers from the J8 connections on the CPW board.

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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 StageTime/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Installation Codes InstallationEquipment Base StackingTable D Vent/Air Inlet Termination Clearances Outdoor Installations Indoor 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 TestHydronic Heating Temperature & Pressure GaugePump 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 AirCanadian Installations 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 VerticalControls Outdoor InstallationFreeze 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 SwitchesUDB Diagnostic Board Pump Time DelayUDB Fault History Water Piping 87%-Efficiency Boilers Special InstructionsVenting Appliance Categories Vent Terminal Location Vertical Venting CategoryCondensate 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-UPMain Burner Adjustment Blower AdjustmentStart-Up Leak Test Procedure Dual-Seat Gas Valves Safety InspectionFollow-Up Pilot Turn-Down TestLeak Test Post Start-Up CheckLighting Instructions OperationTo Turn Off Gas To Appliance Step TroubleshootingSuggested Minimum Maintenance Schedule MaintenancePreventive 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.

The Raypak 992B comes equipped with advanced technologies that enhance performance and ease of use. Among these technologies is the high-precision digital control system, which allows for accurate temperature regulation and monitoring. This feature ensures optimal performance and minimizes energy waste, further contributing to the unit's cost-effectiveness. The boiler also utilizes a modulating burner system, enabling it to adjust flame size based on real-time heating demands. This adaptability not only enhances efficiency but also improves overall comfort within a facility.

Another significant characteristic of the Raypak 992B is its robust construction. Built with durable materials designed to withstand demanding operating conditions, this boiler is engineered for long-lasting performance. Its compact design is an added benefit, facilitating installation in areas with limited space. The unit is also equipped with a stainless steel heat exchanger, which provides superior resistance to corrosion and enhances heat transfer efficiency.

Safety features are also paramount in the design of the Raypak 992B. The boiler includes multiple safety controls and alarms to prevent overheating and maintain safe operating conditions. This diligence in safety ensures peace of mind for operators and reduces the risk of unexpected downtime.

In summary, the Raypak 992B stands out as a top choice for commercial heating solutions, combining high efficiency, advanced technology, and rugged construction. Its features cater to a wide range of heating needs while prioritizing safety and economy. With its impressive performance capabilities, the Raypak 992B continues to be a reliable partner for facilities seeking optimal heating solutions.
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