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Raypak
902B, 302B manual Component Locations - Back, Component Locations - Left Side
Models:
302B
902B
1
6
60
60
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60 pages
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Troubleshooting
Install
Wiring Diagram
Parts Replacement
Warranty
Maintenance
Exhaust Configuration
Field Wiring Connection
High Limit Manual Reset
UDB Diagnostic Board
Page 6
Image 6
Component Locations
Fig. 1: Component Locations – Back
Fig. 2: Component Locations – Left Side
Panels removed for clarity
Fig. 3: Component Locations – Front
6
Page 5
Page 7
Page 6
Image 6
Page 5
Page 7
Contents
INSTALLATION & OPERATING INSTRUCTIONS
Models 302B -902B Types H, WH & P
Deletions None
CONTENTS
WARNINGS
Pay Attention to These Terms
Product Receipt
BEFORE INSTALLATION
Installations at Elevation
Model Identification
Fig. 2 Component Locations - Left Side
Component Locations
Fig. 1 Component Locations - Back
Fig. 3 Component Locations - Front
General Information
GENERAL SAFETY
Time/Temperature Relationships in Scalds
Equipment Base
INSTALLATION
Installation Codes
Stacking
Clearances
Indoor Installations
Outdoor Installations
3 ft 91 cm within a
U.S. Installations1
Canadian Installations2
Table G Vent/Air Inlet Termination Clearances
Reversing Air Filter
Combustion and Ventilation Air
Indoor Units
Direct Vent
Conventional Combustion Air Supply
U.S. Installations
TruSeal Combustion Air
General
Water Piping
Canadian Installations
Reversing Water Connections
Relief Valve Piping
Hydrostatic Test
Cold Water Operation
Hydronic Heating
Temperature & Pressure Gauge
Pump Selection
Air-Separation/ExpansionTank
Pressure Drop in Feet of Head Feedwater Regulator
Piping
Three-WayValves
Potable Water and Space Heating
Pool/Spa Water Chemistry
Automatic Chlorinators and Chemical Feeders
Winterizing Your Heater
Water Hardness
Recommended Levels
pH of Water
Total Dissolved Solids
Fiberglass Pools
Gas Supply
Gas Supply Connection
Electrical Power Connections
Gas Supply Pressure
Field-ConnectedControllers
Field Wiring Connection
Check the Power Source
Making the Electrical Connections
DANGER SHOCK HAZARD
Model
Venting
Flue Exhaust Tee
Diameter
Vent Terminal Location
Exhaust Configuration
Support of Vent Stack
Combustion Air Supply
Changing the Flue Outlet
U.S. Installations
Canadian Installations
Venting Installation Tips
Venting Configurations
Natural Draft Vertical Venting Category
Termination
Horizontal Through-the-WallVenting Category
Direct Vent - Horizontal Through- the-Wall
Direct Vent - Vertical
Outdoor Installation
Controls
Freeze Protection
Heater Sequence of Operation
Models 302B-902B
Color
External Lights
Light
Indication
Ignition Module
High and Low Gas Pressure Switches
High Limit Manual Reset
Flow Switch
Low Water Cut-OffOptional
UDB Diagnostic Board
UDB Fault History
Pump Time Delay
Fault
Table R UDB Fault Messages
Delay
LCD Display Without Fault
Venting
87%-EfficiencyBoilers - Special Instructions
Water Piping
Appliance Categories
Condensate Management
Vertical Venting Category
Vent Terminal Location
Common Venting System
70’ of straight flue pipe
40’ of straight flue pipe
Model
Direct Vent - Vertical
Fig. 41 Direct Vent - Vertical
Vent Size
Wiring Diagram
START-UP
Pre Start-up
Start-Up
Blower Adjustment
Main Burner Adjustment
Follow-Up
Safety Inspection
Leak Test Procedure Dual-SeatGas Valves
Pilot Turn-DownTest
Post Start-UpCheck
OPERATION
Lighting Instructions
To Turn Off Gas To Appliance
TROUBLESHOOTING
Step Step Step Step Step
Step Step
MAINTENANCE
Suggested Minimum Maintenance Schedule
Preventive Maintenance Schedule
Semi-Annually
Weekly
Monthly
Annually
APPENDIX
Inside Air Contamination
ADDITIONAL WARRANTY EXCLUSIONS
LIMITED PARTS WARRANTY HI DELTA - TYPES H AND WH
HEAT EXCHANGER WARRANTY
PARTS REPLACEMENT
ADDITIONAL WARRANTY EXCLUSIONS
LIMITED PARTS WARRANTY HI DELTA - TYPE P
HEAT EXCHANGER WARRANTY
PARTS REPLACEMENT
Nominal Factory Recommended Settings
START-UPCHECKLIST FOR FAN-ASSISTED
EMISSIONS SETTINGS AND TEST INFORMATION
RAYPAK PRODUCTS
248 CMR 5.082a1 through