Brochure
Table Of Contents
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17
MODEL HK2000
Finally, a control that gives meaning to the letter “V” in HVAC,
the cure for “sick building syndrome.” Helps meet local building
codes and “ASHRAE” ventilation standards.
The HK2000 Fresh Air and Economizer panel provides intelligent
and economical control of residential and commercial heating
and cooling systems. In the Fresh Air mode, the HK2000 has the
flexibility to bring in as much, or as little Fresh Air as needed.
The cycle timer is adjustable from 0 (off) to 12 cycles (continu-
ous) per hour. When the cycle timer is set to 4 cycles per hour,
representing 20 minutes of Fresh Air, the HK2000 will activate
the Fresh Air mode for 5 minutes every 1/4 hour (or every 15
minutes).
This feature is designed to minimize the load that could build up
on the HVAC system. Other added flexibility of the HK2000 is
its ability to control exhaust air and return air as well as fresh air
intake. This built in feature prevents over pressurization in homes
and buildings.
The Economizer mode of the HK2000 allows for the use of outside air to satisfy the need of indoor cooling. This form of “free
cooling” is monitored and controlled using several methods.
Dry bulb method, also known as, outdoor temperature method will sense the outside air temperature and determine if that air
alone could satisfy the cooling demand. The determining temperature range for this method is field adjustable between 42º F and
78º F. The outdoor air sensor (OAS) is included with each panel for this function.
If the outside air is too warm, the HK2000 will start the air conditioning unit. If the dry bulb mode uses outside air, the HK2000
will also monitor its success. If the cooling is not satisfied within 15 minutes using outside air, the HK2000 will shut down and
start the air conditioning unit.
During Enthalpy mode an optional enthalpy control (EC) can be used to sense the outside air for appropriate conditions. The EC
will either satisfy the cooling with outside air or turn on the air conditioning unit using its own settings.
The most economical advantage of the HK2000 is the Mechanical Cooling Assistance mode. This
will allow the HK2000 to monitor the return air temperature with the use of an optional return air sen-
sor (same as OAS) and compare it to the outdoor air temperature. If conditions allow, the HK2000 will
bring in outside air and mix it with return air and use this as cooling. This again, reduces the load on
the HVAC unit.
Fresh Air Intake & Economizer System
MODEL EC
Enthalpy Control
Enthalpy control provides the means to sense outside air
temperature and humidity. When these conditions are
acceptable fresh air can be used instead of cooling
List $460.00
Model List
HK2000 $240.00
OAS 52.00