Raypak 302B-902B Fascicule

Catalog No.:  2000.302D 

Effective:  11-15-07 

Replaces:  1-1-07

 

Job:  

         

 

Engineer:  

         

 

 

Contractor:  

         

 

 

Prepared By:  

         

 

  Date:   

         

 

 

Model:   

         

 

  Indoor/Outdoor:   

         

 

   MBTUH Input:   

         

 

 

 

Š  100% Factory Fire Tested 
Š  Efficiency: 84% 
Š  Maximum Outlet Temperature: 230°F 
Š  Minimum Non-Condensing Inlet Temperature: 105°F 
Š  Thermal Shock Proof Heat Exchanger 
Š  Limited Twenty-Year Thermal Shock Warranty 
Š  Limited Ten-Year Closed-System Heat Exchanger 

Š  Diagnostic Center with Fault History 
Š  PolyTuf Powder Coated Cabinet 
Š  No Combustible Floor Shield Required 
Š  Fan-Assisted 
Š  Patented Burner Security Blanket 
 

Heat Exchanger 
ƒ H 

Stamp 

ƒ Headers 

 Glass-Lined Cast Iron – Standard  
 Bronze – Option A-1 

ƒ  ASME Inspected and Stamped 

160 PSIG Working Pressure 

ƒ  National Board Approved 
ƒ Fin 

Tubing 

 Copper – Standard  
 Cupro Nickel – Option A-3 

ƒ  ASME Steel Tube Sheet 
ƒ  Silicone High Temp. O-Rings 
ƒ  ASME Pressure Relief Valve  

 45 PSIG – Standard on Models  

302B and 402B 

 60 PSIG – Standard on Models 

502B-902B 

            PSIG – Optional 

ƒ  Temperature and Pressure Gauge 
ƒ Water 

Connections 

 Left – Standard  
 Right – Option A-6 

Controls 
ƒ  120V, 60Hz, 1

∅ Power Supply 

ƒ  120/24V 60Hz Transformer 
ƒ 100% 

Shut-Off/Lockout 

ƒ  Hot Surface Ignition 
ƒ  Remote Flame Sensor 
ƒ  High Limit Control, Manual Reset 
ƒ  On/Off Power Switch 
ƒ Manual 

Shut-Off, 

Front-Mounted 

ƒ Flow 

Switch 

ƒ  Blocked Vent Pressure Switch 
ƒ  Combustion Air Proving Switch 
ƒ  Economaster Pump Time Delay 
ƒ Enable/Disable 

Gas Train 
ƒ  Manual Gas Shut-Off Valve(s) 
ƒ Gas 

Pressure 

Regulator 

ƒ  Safety Shut-Off Valve 
ƒ Firing 

Control 

Valve 

ƒ Firing 

Mode 

 On/Off (H4): Models  

302B and 402B 

 2-Stage (H3): Models  

302B-902B 

ƒ Fuel 

 Natural Gas  
 Propane Gas 
 4” WC Gas Supply Pressure 

G-20 

ƒ  Design Certified ANSI Z21.13/ 

CSA 4.9 

 

Construction 
ƒ Indoor/Outdoor 

Construction 

ƒ  Enclosed Front Controls 

Venting 
ƒ Vent 

Location 

 

 Top – Standard 
 Rear – Option D-14 

ƒ  Vent Termination Cap 

 Outdoor  D-11 
 Indoor, Horizontal  D-15 
 Indoor, Vertical (by others) 

ƒ Combustion 

Air 

 In-Line Filter Kit (TruSeal only) 

D-17 

 Air Intake Elbow  D-16 

ƒ  Extractor – Optional  

 By others 
 Not required 

Burner 
ƒ  Ultra-Low NOx: Less than 30 PPM 

 B-2 

Tankstat, Single-Stage  
(100-200°F) 

 B-3 

Tankstat, 2-Stage (100-200°F) 

 B-6 

Aquastat, 2-Stage (100-200°F) 

 B-     TempTracker 

Digital 

Controller, 

2-Stage 

 B-     TempTracker 

Digital 

Controller, 

4-Stage 

 Y-241 Electronic Sequencer, 4-Stage 
 Y-281 Electronic Sequencer, 8-Stage 

 C-6 

Ignition Module, Manual Reset 

 D-21  TruSeal

®

 Direct Vent 

 F-10  Low Water Cut-Off, Remote Probe 
  I-1 

High Limit Control, Auto Reset 

 P-      Pump:            HP, 120V, 1

∅, 60Hz 

Water Hardness:       GPG 

 

 

 Cast Iron 

 Bronze 

 Mounted 

 Loose 

 

 

 Front 

 Rear 

 P-26  Cold Water Start (See 2000.48) 
 S-1 

Low Gas Pressure Switch, Manual 

 S-2 

High Gas Pressure Switch, Manual 

 X-1 

SureRack™ Kit 

 X-2 

SureRack Add-on 

                       

 

             

 

®

   Space Heating/Hot Water Boilers 

Models 302B-902B