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Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual: 7960-848B
Supersedes: 7960-848A
Date: 12-9-19
The CMA-39 is a field-installable low ambient fan cycling
control kit. This low ambient control is only for use on
R-410A refrigerant systems. The low ambient control
pressure sensor is attached to the suction line of the sys-
tem, and monitors low side system pressure. Operation
of the LAC occurs as outdoor temperatures drop below
the 65°F to 50°F range. On/Off LAC operation cycles the
condenser fan operation based on outdoor temperature.
The CMA-39 kit is for use with Bard models W12AB,
W30AB, W30LB, W36AB, W36LB, W42AC, W48AC,
W60AC, W72AC, W3SAC, W4SAC and W5SAC wall-
mount air conditioners.
The CMA-39 kit consists of:
• 7960-848 Installation Instructions
• 8406-112 Low Ambient Fan Cycling Control
• 910-2058 Outdoor Temperature Switch Assembly
• 8408-048 Freeze Protect Thermostat
• 1012-066 3/4" Screw (1)
• 8607-017 Terminal Block
• 1012-085 1/2" Self-Tapping Screws (2)
• 7961-312-0482 CMA-39 Unit I.D. Label
Field-supplied tools needed:
• Personal protection equipment, including gloves
and safety glasses
• 5/16" nut driver
• 1/2" wrench (service port) and 9/16" wrench (LAC
control)
• Phillips head screwdriver
• Small flat head screwdriver for securing wire in
terminal block
CMA-39 Low Ambient Fan Cycling Control
SUPPLEMENTAL INSTRUCTIONS
Sharp metallic edges.
Take care and wear appropriate protective
devices to avoid accidental contact with
sharp edges.
Failure to do so can result in personal
injury.
!
CAUTION
Exposed moving parts.
Disconnect all electrical power before
servicing.
Failure to do so can result in severe injury
or amputation.
!
WARNING
Electrical shock hazard.
Disconnect the remote electric power
supply or supplies before servicing.
Failure to do so can result in serious injury
or death.
!
WARNING
