Raypak 302B, 902B Venting, Flue Exhaust Tee, Model Diameter Order Number, Appliance Categories

Page 25

SINGLE

STAGE

TANKSTAT

STAGE 1

CONNECTION

ATTACH STAGE 1 CONNECTIONS

ON HEATER TO THE SINGLE STAGE

TANKSTAT AS SHOWN IN THE DIAGRAM ABOVE.

Fig. 23: Single-Stage Tankstat

Consult the wiring diagram shipped with the heater in the instruction packet or at the end of this section. The stage-selector terminals are for the remote tank con- trol through the heater’s 24 VAC transformer. DO NOT attach any voltage to the stage-selector terminals. Before starting the heater, check to ensure proper volt- age to the heater and pump.

NOTE: If any of the original wire supplied with the heater must be replaced, it must be replaced with similar sized 105°C wire or its equivalent.

Venting

NOTE: For 87%-efficiency boilers, see special instructions on page 40.

CAUTION: Proper installation of flue venting is criti- cal for the safe and efficient operation of the heater.

General

Flue Exhaust Tee

An optional Flue Exhaust Tee is available to facilitate horizontal venting. Any reference to horizontal venting that exits the back of the heater requires this tee. Refer to Table L for the appropriate kit for your model.

Model

Diameter

Order Number

 

 

 

302B

5”

011838

 

 

 

402B-502B

6”

011839

 

 

 

652B, 752B,

8”

011840

902B

 

 

 

 

 

Table L: Flue Exhaust Tee Kits

Appliance Categories

Heaters are divided into four categories based on the pressure produced in the exhaust and the likelihood of condensate production in the vent.

Category I – A heater which operates with a non-pos- itive vent static pressure and with a vent gas temperature that avoids excessive condensate pro- duction in the vent.

Category II – A heater which operates with a non-pos- itive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

Category III – A heater which operates with a positive vent pressure and with a vent gas temperature that avoids excessive condensate production in the vent.

Category IV – A heater which operates with a positive vent pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

See Table M for appliance category requirements.

NOTE: For additional information on appliance categorization, see appropriate ANSI Z21 Standard and the NFGC (U.S.), or B149 (Canada), or applicable provisions of local building codes.

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Contents Installation & Operating Instructions Deletions None Contents Pay Attention to These Terms Installations at Elevation Before InstallationProduct Receipt Model IdentificationComponent Locations Back Component LocationsGeneral Information Time/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Installation Codes InstallationEquipment Base StackingOutdoor Installations Indoor InstallationsClearances Ft 91 cm within a Indoor Units Combustion and Ventilation AirReversing Air Filter Direct VentConventional 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 Cold Water StartsPiping 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 HardnessTotal Dissolved Solids PH of WaterGas Supply Connection Gas SupplyModel Table K Maximum Equivalent Pipe LengthGas Supply Pressure Electrical Power ConnectionsField-Connected Controllers Check the Power Source Field Wiring ConnectionMaking the Electrical Connections Stage Tankstat Flue Exhaust Tee VentingModel Diameter Order Number Appliance CategoriesVent Terminal Location Support of Vent StackCanadian Installations InstallationsChanging the Flue Outlet Venting Configurations Venting Installation TipsInstallation Natural Draft Vertical Venting CategoryCommon Venting System TerminationCertified Vertical Venting Combustion Air Air Inlet 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 302B-902B Heater Sequence of OperationExternal Lights Color Indication Code Condition Ignition ModuleFlow Switch High Limit Manual ResetHigh and Low Gas Pressure Switches Low Water Cut-Off OptionalUDB Fault History UDB Diagnostic BoardPump Time Delay Table R UDB Fault Messages Water Piping 87%-Efficiency Boilers Special InstructionsVenting Appliance Categories Model 10F 20F 30F Min. Flow Max Flow GpmVent Terminal Location Vertical Venting CategoryCondensate Management 752BE Combustion Air 902BE 30’ 80’ Certified Maximum Combustion Air Air Inlet Model VentingDirect Vent Horizontal Through- the-Wall ABS Cpvc Wiring Diagram 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 Important Instructions for the Commonwealth of Massachusetts
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302B, 902B specifications

Raypak is a prominent name in the heating industry, particularly known for its advanced technology and robust design in residential and commercial heating solutions. Two of their notable models, the Raypak 302B and 402B, exemplify innovation and efficiency in hydronic heating systems, designed to meet diverse needs while ensuring optimal performance.

The Raypak 302B and 402B are high-efficiency boilers that utilize gas-fueled systems. The 302B model has a heating capacity of 302,000 BTU/h, while the 402B boasts a maximum capacity of 402,000 BTU/h. This range of heating output makes these models suitable for a variety of applications, from residential heating needs to larger commercial spaces that require a reliable heat source.

One of the standout features of the Raypak 302B and 402B is their use of fire-tube heat exchanger technology. This design promotes efficient heat transfer and allows for lower emissions, thus minimizing the environmental impact. The fire-tube design also contributes to a longer lifespan and reduced maintenance costs, making these boilers a cost-effective solution over time.

Equipped with advanced control systems, the Raypak 302B and 402B ensure precise temperature regulation and improved energy usage. The digital display provides real-time feedback and diagnostics, enhancing user experience and simplifying troubleshooting. These models are also compatible with various building management systems, providing users with versatility in integration to optimize building performance.

In addition to their technological advancements, these boilers are designed with user safety and convenience in mind. They include features such as built-in safety controls, easy access for service and maintenance, and a compact footprint to fit into tight spaces. Their robust construction ensures durability, which is crucial for systems that operate under high demand.

Moreover, both models have been engineered to succeed in various climates, making them reliable choices for users in diverse geographical locations. With their energy-efficient operation, reliable performance, and advanced features, the Raypak 302B and 402B embody quality and innovation in the heating market, ensuring comfortable environments while lowering energy costs and environmental footprints.
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