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Manual 2100-449A
Page 4 of 13
2. Remove and save the existing exterior blower
access and service access panels on the Bard wall
mount unit. (See Figure 1.)
INSTALLATION
BASIC INSTALLATION
1. Unpack the economizer assembly which includes
the integral economizer with attached electrical
harness, mixed air thermistor, miscellaneous
hardware and installation instructions.
WARNING
Open and lock unit disconnect switch before
installing this accessory to prevent injury or
death due to electrical shock or contact with
moving parts. Turn thermostat to OFF.
FIGURE 1