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Manual 2100-520
Page 5 of 7
AUTOMATIC CONTROL SYSTEMS
THERMOSTATS
There are many types of thermostats available to properly control your system, and these can vary in
features and some functions depending upon the type of system (air conditioner, heat pump, etc.)
installed and any special options (ventilation, supplemental heat, etc.) that may be installed.
Approved compatible thermostats are available from Bard Manufacturing Company, Inc. for all
applications, and since these can vary in numerous features and functions, it is not possible to
adequately discuss them all in this User’s Guide. Many installers also install thermostats other than
those offered by Bard, and must determine proper compatibility prior to installation.
In addition, many schools and similar institutions may utilize central energy management systems (EMS)
or direct digital control (DDC) systems.
In all circumstances have your installer, Service Company, building administrator or maintenance
department personnel instruct you as to proper operation of your specific thermostat or temperature
control system.
INSUFFICIENT COOLING OR HEATING
In extremely hot or cold weather, your system will continue to deliver its normal supply of conditioned air.
If the unit operates but fails to provide sufficient comfort, check the following before calling your Service
Company:
1. Be sure the thermostat setting is correct.
2. Check the air filters, and replace or clean if dirty.
3. Make sure that air can circulate freely throughout the conditioned space, and that all supply
registers and return air grilles are not blocked.
4. Make sure that the water supply is at the proper flow rate and is not restricted.
FAILURE TO OPERATE
Check the following before calling your Service Company:
1. Be sure the thermostat setting is correct.
2. Check the air filters, and replace or clean if dirty.
3. Make sure that the power supply and water supply are “On”.
4. Make sure that air can circulate freely throughout the conditioned space, and that all supply
registers and return air grilles are not blocked.
5. Make sure that the water supply is at the proper flow rate and is not restricted.
LUBRICATION REQUIREMENTS
The indoor air-moving motor is permanently lubricated and requires no re-oiling.