Appendix, Inside Air Contamination | Raypak 992B-1262B manual

APPENDIX

Inside Air Contamination

All heaters experience some condensation during start-up. The condensate from flue gas is acidic. Combustion air can be contaminated by certain vapors in the air which raise the acidity of the condensate. Higher acidity levels attack many materials including stainless steel, which is commonly used in high effi- ciency systems. The heater can be supplied with corrosion-resistant, non-metallic intake air vent materi- al. You may, however, choose to use outside combustion air for one or more of these reasons:

1.Installation is in an area containing contaminants listed below which will induce acidic condensation.

2.You want to reduce infiltration into your building through openings around windows and doors.

3.You are using AL29-4C stainless steel vent pipe, which is more corrosion-resistant than standard metallic vent pipe. In extremely contaminated ar- eas, this may also experience deterioration.

Products causing contaminated combustion air:

•spray cans containing chloro/fluorocarbons

•permanent wave solutions

•chlorinated waxes/cleaners

•chlorine-based swimming pool chemicals

•calcium chloride used for thawing

•sodium chloride used for water softening

•refrigerant leaks

•paint or varnish removers

•hydrochloric acid/muriatic acid

•cements and glues

•antistatic fabric softeners used in clothes dryers

•chloride-type bleaches, detergents, and cleaning solvents found in household laundry rooms

•adhesives used to fasten building products

•similar products

Areas where contaminated combustion air commonly exists:

•dry cleaning/laundry areas

•metal fabrication plants

•beauty shops

•refrigeration repair shops

•photo processing plants

•auto body shops

•plastic manufacturing plants

•furniture refinishing areas and establishments

•new building construction

•remodeling areas

•open pit skimmers

Check for areas and products listed above before in- stalling heater. If found:

•remove products permanently, OR

•install TruSeal direct vent

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Raypak 992B-1262B manual Appendix, Inside Air Contamination

Contents

Installation & Operating Instructions Page Contents Pay Attention to These Terms Before Installation Installations at ElevationProduct Receipt Model Identification Component Locations Component Locations Back General Information Model Quantity Vent Size Gas Burners BlowersValves Model Burners per Valve Stages Fire at Stage General Safety Time/Temperature Relationships in ScaldsWater Time to Produce Serious Temp Burn Installation Installation CodesEquipment Base Stacking Table D Vent/Air Inlet Termination Clearances Indoor Installations Outdoor InstallationsClearances Combustion and Ventilation Air Indoor UnitsReversing Air Filter Direct Vent Installations Conventional Combustion Air SupplyTruSeal Combustion Air All Air from Inside the Building Canadian Installations Water PipingGeneral Reversing Water Connections Relief Valve Piping Hydrostatic Test Cold Water Operation Temperature & Pressure Gauge Hydronic HeatingPump Selection Pressure Drop in Feet of Head Feedwater Regulator PipingAir-Separation/Expansion Tank Three-Way Valves Potable Water and Space Heating Pool Heating Automatic Chlorinators and Chemical Feeders Winterizing Your Heater Gas Supply Pool/Spa Water Chemistry Water HardnessPH of Water Total Dissolved Solids Gas Supply Connection Reversing Gas Supply ConnectionModel Table I Maximum Equivalent Pipe Length Electrical Power Connections Check the Power SourceGas Supply Pressure Field-Connected Controllers Field Wiring Connection Making the Electrical Connections On-Off Wiring Connections Venting Flue Exhaust TeeModel Diameter Order Number Appliance Categories Support of Vent Stack Vent Terminal LocationCombustion Exhaust Certified Combustion Air Installations Canadian InstallationsChanging the Flue Outlet Venting Installation Tips Venting ConfigurationsInstallation Natural Draft Vertical Venting Category Termination Common Venting SystemCertified Vertical Venting Combustion Air Air Inlet Model Height Horizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting Category Direct Vent Horizontal Through- the-Wall Model Certified Maximum Combustion Air InletVenting Equivalent Material Vent Length Intake Pipe Direct Vent Vertical Direct Vent Vertical Outdoor Installation ControlsFreeze Protection Heater Sequence of Operation Models 992B-1262B External Lights Color Indication Models 1532B 1802B Page Page Models 2002B 2342B Page Page High Limit Manual Reset Flow SwitchIgnition Module Operating Control High and Low Gas Pressure Switches Low Water Cut-Off Optional UDB Diagnostic Board UDB Fault History 87%-Efficiency Boilers Special Instructions Water PipingVenting Appliance Categories Vertical Venting Category Vent Terminal LocationCondensate Management Certified Maximum Combustion Air Air Inlet Model Venting EquivalentMax. Length Material Vent Length Direct Vent Horizontal Through- the-Wall 992BE 75’ 100’ 1262BE Galvanized Steel 1532BE Category 25’ Wiring Diagram Models 992B-1262B Wiring Diagram Models 1532B-2342B START-UP Pre Start-up Blower Adjustment Main Burner AdjustmentStart-Up Safety Inspection Leak Test Procedure Dual-Seat Gas ValvesFollow-Up Pilot Turn-Down Test Post Start-Up Check Leak Test Operation Lighting InstructionsTo Turn Off Gas To Appliance Troubleshooting Step Maintenance Suggested Minimum Maintenance SchedulePreventive Maintenance Schedule Weekly Semi-AnnuallyAnnually As Required Appendix Inside Air Contamination Limited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P START-UP Checklist for FAN-ASSISTED Raypak Products Page