Bard CMA-39 Supplemental Instructions

SUPPLEMENTAL INSTRUCTIONS
CMA-39 Low Ambient Fan Cycling Control
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
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
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
!
Exposed moving parts.
Disconnect all electrical power before
servicing.
Failure to do so can result in severe injury
or amputation.
CAUTION
!
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.
Manual:
Supersedes: 7960-848A
Date:
7960-848B
12-9-19
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