Bard GVDM-26 Heat Pump User Manual


 
Manual 2100-520
Page 7 of 7
6. Heat pumps may have the system (compressor) run continuously at lower outdoor temperatures,
and this is normal. The heat pump (compressor) mode is controlled by the 1
st
& 2
nd
stage of the
thermostat, and delivers the most efficient heat. As the outdoor temperature drops off, the heat
loss from the structure can exceed the heating capacity of the heat pump, and must be
supplemented by the 3
rd
stage electric heat, which is not as efficient as the heat pump. The
thermostat automatically controls everything, and the backup electric heat will only operate on
demand as needed to maintain the desired temperature.
7. The thermostat is the user’s primary connection to the system, so it is very important to have a
thorough understanding of how it works and how to use it properly. Since there are many
different types of controls available, and can vary depending upon what type of heating/cooling
system you may have. Have your installer or Service Company explain and demonstrate proper
operation of the controls.
8. Make sure you thoroughly understand how the heating and cooling system itself is intended to
operate and what to expect from it. Have your installer or Service Company explain and
demonstrate proper operation of the heating and cooling system.