Weather-Rite XT112

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SERIES XT INSTALLATION, OPERATION AND SERVICE MANUAL

Step 5: Attach remaining support braces taking note of the support location to proper orient for your air

handler's configuration. See Page 20, Figure 9.

FIGURE 9: Step 5

Control Side

Filter Access

Return

Air

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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 26

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