Weather-Rite UHA100 Installation, Operation & Service Manual - page 5
Printed in U.S.A.
© 2014
Weather-Rite LLC
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TABLE OF CONTENTS
SECTION 1: Heater Safety......................................................1
1.1 Manpower Requirements .............................................1
1.2 Safety Labels and Their Placement..............................1
1.3 California Proposition 65 ..............................................1
SECTION 2: Installer Responsibility .....................................5
2.1 Wall Tag .......................................................................5
2.2 Corrosive Chemicals....................................................5
2.3 National Standards and Applicable Codes...................5
SECTION 3: Critical Considerations .....................................6
3.1 Basic Information .........................................................6
3.2 Manufactured Units......................................................6
3.3 Location and Suspension ............................................6
3.4 Minimum Required Installation Clearances .................6
3.5 Ventilation ....................................................................6
3.6 Gas Supply ..................................................................6
3.7 Electrical Supply ..........................................................6
3.8 Vent..............................................................................6
SECTION 4: Clearances to Combustibles.............................7
4.1 Required Clearances to Combustibles.........................7
4.2 Clearances to Combustibles ........................................7
SECTION 5: National Standards and Applicable Codes......9
5.1 Gas Codes...................................................................9
5.2 Aircraft Hangars ...........................................................9
5.3 Parking Structures and Repair Garages ......................9
5.4 Electrical ......................................................................9
5.5 Venting .........................................................................9
5.6 High Altitude.................................................................9
SECTION 6: Heater installation............................................ 10
6.1 General ...................................................................... 10
6.2 Shelf Mounting and Suspension ................................ 10
6.3 Wall Mounting ............................................................ 10
SECTION 7: Venting .............................................................. 14
7.1 Changing Vent and Air Intake Orientation................... 14
7.2 Venting........................................................................ 14
7.3 Vent Installation .......................................................... 14
7.4 Horizontal Venting....................................................... 15
7.5 Vertical Venting ........................................................... 15
7.6 Length Requirements ................................................. 16
7.7 Vent Material............................................................... 16
7.8 Replacing an Existing Heater in a Venting System ..... 16
SECTION 8: Air Supply .........................................................21
8.1 Separated Combustion Installation ............................21
8.2 Building Ventilation.....................................................21
8.3 Outside Combustion Air Supply .................................21
SECTION 9: Gas Piping ........................................................22
9.1 Connections...............................................................22
SECTION 10: Wiring ..............................................................24
10.1 Positioning Thermostats...........................................24
10.2 Low Voltage Thermostat with One Heater................24
10.3 UHA[X][S] Internal Wiring Diagram ..........................25
10.4 UHA[X][S] Ladder Wiring Diagram...........................26
10.5 Electrical Connection to the Heater..........................27
SECTION 11: Operation and Maintenance ......................... 28
11.1 Pre-Start-Up Checks ................................................ 28
11.2 Begin Start-Up ......................................................... 28
11.3 Pressure Switch........................................................ 30
11.4 Turning Off the Heater .............................................. 30
11.5 External Controls...................................................... 31
11.6 Complete Start-Up ................................................... 31
11.7 Instruction to the User .............................................. 31
SECTION 12: User Instructions........................................... 32
12.1 Heater Operation..................................................... 32
12.2 Common User Controls ........................................... 32
12.3 Lighting Instructions ................................................ 33
12.4 Simple Troubleshooting ........................................... 33
SECTION 13: Servicing ........................................................ 34
13.1 Servicing Instructions .............................................. 34
13.2 Burner Maintenance ................................................ 34
13.3 Fan/Motor Assembly Maintenance .......................... 34
13.4 Heat Exchanger Maintenance ................................. 35
13.5 Gas Valve Maintenance........................................... 35
13.6 Flue Blower ............................................................. 35
13.7 Venting and Air Intake Pipe ..................................... 35
13.8 Maintenance Checklist ............................................ 35
SECTION 14: Troubleshooting............................................. 37
14.1 General.................................................................... 38
14.2 Troubleshooting For Automatic Ignition Burner
Systems .................................................................. 39
14.3 Troubleshooting for Flame Supervision System....... 40
14.4 Troubleshooting for Gas Valves ............................... 41
14.5 Troubleshooting for Flue Blower .............................. 41
SECTION 15: Replacement Parts ........................................ 42
15.1 Gas Valve ................................................................ 42
15.2 Burner Injectors ....................................................... 43
15.3 Ignition Electrode and Flame Probe ........................ 44
15.4 Heat Exchanger....................................................... 45
15.5 Louver and Louver Springs ..................................... 45
15.6 Flue Blower Vertical Installation for UHA[X][S]
30 - 75 Only............................................................. 46
15.7 Pressure Switch....................................................... 47
15.8 Ignition Control ........................................................ 47
15.9 Axial Fan/Guard/Motor Assembly ............................ 47
15.10 Limit Switches........................................................ 48
SECTION 16: Specifications ................................................ 49
16.1 Dimension Data ....................................................... 49
16.2 General Technical Data Table .................................. 50
16.3 Technical Data Table................................................ 50
SECTION 17: WEATHER-RITE
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UHA-Series Warranty....... 51