Weather-Rite XT112

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SECTION 11: INLET HOOD

Step 11.2.3 Attach the upper hood roof with the provided TEK screws along the left and right side and upper

edge to the air handler.

Step 11.2.4 Attach the bottom filter rail for the upper inlet hood to the hood using the provided rivets.

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Default Chapter5
- Table of Contents5
Table of Contents7
SECTION 1: Air Handler Safety7
- Description of Operation7
- Inspection and Setup7
- Safety Labels and Their Placement8
- California Proposition 658
SECTION 2: Installer Responsibility9
- Wall Tag9
- Corrosive Chemicals9
- National Standards and Applicable Codes10
- Required Equipment10
SECTION 3: Critical Considerations11
- Required Clearances to Combustibles11
- Purge of Supply Duct12
- Hardware12
SECTION 4: National Standards and Applicable Codes13
- Gas Codes13
- Installation Codes13
- Aircraft Hangars13
- Parking Structures and Repair Garages13
- Electrical13
- Venting13
- High Altitude13
SECTION 5: Specifications14
SECTION 6: Lifting an Air Handler16
- Lifting an Air Handler16
SECTION 7: Roof Curb18
- Roof Curb Assembly and Installation18
- Air Handler Mounting to Roof Curb20
SECTION 8: Legs for Horizontal Mounting21
- Leg Mounting21
- Leg Mounting - Horizontal Air Handler21
SECTION 9: Upright Installation22
- Upright Leg Assembly22
- Upright Installation22
- Attaching Air Handler22
SECTION 10: Filter Section27
- Filter Section Support Assembly Installation (XT-115 - XT-130)27
- Filter Section Installation - Horizontal Air Handlers28
- Filter Section Installation - Upright Air Handlers28
SECTION 11: Inlet Hood29
- Inlet Hood Assembly29
SECTION 12: Dampers36
- Discharge Damper37
- Inlet Damper37
SECTION 13: Discharge Heads and Splash Plates38
- Three-Way Discharge Head Installation38
- Splash Plate Installation39
SECTION 14: Duct Considerations41
- Inlet Duct Work41
- Return Duct Work41
- Discharge Duct Work41
SECTION 15: Gas Piping42
- Gas Manifolds42
- Gas Piping and Pressures42
- Gas Manifold Venting42
- Gas Piping45
- Pressure Test Ports45
- Line Pressure Test - Leak Testing45
SECTION 16: Electrical46
- Disconnect Fuse Sizing47
- Wiring and Electrical Connections47
- Remote Panel47
- Motor Current Draw47
- Control Current Draw48
- Safety Systems48
- Interlocks51
- Control Options51
SECTION 17: Sequence of Operation53
- Air Handler Configuration53
- HVAC Remote Panels and Panel Options55
- Basic Air Handler Sequence of Operation57
SECTION 18: Direct Fired Burner61
- Direct Fired Burner Ignition62
- Direct Fired Burner Flame Proving (Flame Rod)63
SECTION 19: Direct Fired Process Air Heaters64
- Direct Fired Process Air Heater Models65
- Installer's Responsibilities65
- Installer's Responsibility for Process Heaters Connected to Paint Booths66
SECTION 20: Start-Up Procedures67
- Installation of Recirculating Air Handler68
- Mechanical68
- Electrical69
- Airflow69
- Gas Piping and Initial Pressure Settings70
- Safety Shut off Valve Check72
- Temperature Control System Calibration72
SECTION 21: Maintenance75
- General76
- Unit Exterior76
- Blower Section76
- Manifold and Controls79
- Burner79
- Optional Equipment80
SECTION 22: Replacement Parts81
SECTION 23: Troubleshooting85
- Initial Checks86
- Motor and Blower86
- Burner87
- Temperature Controls88
- A1014 Amplifier - Field Checklist89
- A44 Amplifier - Field Service Checklist91
SECTION 24: WEATHER-RITE XT-Series Start-Up Proce- Dures93
SECTION 25: the WEATHER-RITE ™ XT-Series Warranty95

Weather-Rite XT112 - Page 31

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