Carrier 120 Series Installation, Start--Up, Operating, And Service And Maintenance

Installation, Start-up, Operating and
Service and Maintenance Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS ......................... 3
INTRODUCTION ................................... 4
CODES AND STANDARDS ........................... 4
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ... 5
ACCESSORIES ..................................... 5
LOCATION ........................................ 9
General ......................................... 9
AIR FOR COMBUSTION AND VENTILATION ......... 10
Introduction .................................... 10
CONDENSATE TRAP ............................... 13
Upflow ........................................ 13
Downflow ..................................... 13
Horizontal ..................................... 13
CONDENSATE DRAIN ............................. 17
INSTALLATION ................................... 20
Upflow ........................................ 20
Downflow ..................................... 21
Horizontal ...................................... 21
Filter Arrangement ............................... 21
AIR DUCTS ....................................... 30
General Requirements ............................. 30
Ductwork Acoustical Treatment ..................... 30
GAS PIPING ...................................... 32
ELECTRICAL CONNECTIONS ....................... 33
115-V Wiring ................................... 34
J-Box Installation ................................ 34
24-V Wiring .................................... 34
Accessories ..................................... 35
Alternate Power Supplies .......................... 35
VENTING ........................................ 39
Special Venting Requirements for Installations in Canada . 39
General ........................................ 40
Materials ....................................... 40
Venting Systems ................................. 40
Combustion Air and Vent Piping Insulation Guidelines ... 43
Installing the Termination .......................... 45
Venting System Length Calculations ................. 50
START-UP, ADJUSTMENT, AND SAFETY CHECK ...... 62
General ......................................... 62
Thermostat Setup Switch ............................ 62
Prime Condensate Trap ............................. 62
Adjustments ...................................... 63
SERVICE AND MAINTENANCE PROCEDURES ........ 71
Cleaning Heat Exchangers ........................... 76
SEQUENCE OF OPERATION ........................ 79
PARTS REPLACEMENT GUIDE ...................... 85
TABLES
Loose Parts Bag ..................................... 6
Minimum Clearances to Combustible Materials ............. 6
Minimum Free Area Required ......................... 12
Minimum Space Volumes ............................. 12
Filter Size Information ............................... 24
Opening Dimensions ................................ 26
Air Delivery CFM ................................... 31
Maximum Capacity of Pipe ........................... 33
Electrical Data ...................................... 35
Vent Termination Kit for Direct Vent (2-Pipe) Systems ...... 42
Combustion-Air Vent Pipe, Fitting & Cement Material ....... 48
Maximum Allowable Exposed Vent Lengths Insulation ...... 49
Maximum Equivalent Vent Length ...................... 50
Deductions from Maximum Equivalent Vent Length ........ 50
Altitude Derate Multiplier for U.S.A ..................... 69
Blower Off Delay Setup Switch ........................ 69
Gas Rate .......................................... 69
Orifice Size and Manifold Pressure ..................... 70
Always Ask Fer
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ISO9001
Portions of the text and tables are reprinted from NFPA 54/ANSI
Z223.1-2012©, with permission of National Fire Protection
Association, Quincy, MA 02269 and American Gas Association,
Washington DC 20001. This reprinted material is not the complete
and official position of the NFPA or ANSI on the referenced
subject, which is represented only by the standard in its entirety.