Brochure

16
Volume Control Dampers –VCD
Fresh Air Intake & Economizer System
The VCD series of Volume Control Dampers have been designed, engineered and tested for smooth,
reliable and quiet operation for eld test and balance. HVAC performance depends largely upon
efcient airow, EWC Controls has designed the VCD series dampers to meet the highest standards for
all airow requirements. The VCD dampers are designed to control airow volume in low to medium
pressure and velocity HVAC systems. Typical applications for the VCD would include volume and
control of airow in zoning, air handler units, intake, exhaust, mixed air applications and also
economizer systems.
This is the Quadrant Dimension – Always specify this dimension second for pricing and ordering
6 8 10 12 14 16 18 20 22 24 26 28 30 32
6 $105.00 $105.00 $109.00 $114.00 $120.00 $126.00 $132.00 $139.00 $144.00 $150.00 $160.00 $166.00 $170.00 $172.00
8 $105.00 $107.00 $110.00 $117.00 $122.00 $129.00 $138.00 $145.00 $150.00 $153.00 $163.00 $169.00 $178.00 $180.00
10 $109.00 $110.00 $115.00 $119.00 $126.00 $134.00 $143.00 $151.00 $156.00 $160.00 $171.00 $176.00 $186.00 $190.00
12 $114.00 $117.00 $119.00 $124.00 $134.00 $145.00 $152.00 $160.00 $164.00 $168v $180.00 $191.00 $200.00 $209.00
14 $120.00 $122.00 $126.00 $134.00 $141.00 $158.00 $166.00 $174.00 $178.00 $183.00 $194.00 $202.00 $211.00 $220.00
16 $126.00 $129.00 $134.00 $145.00 $158.00 $169.00 $179.00 $190.00 $194.00 $198.00 $210.00 $220.00 $224.00 $231.00
18 $132.00 $138.00 $143.00 $152.00 $166.00 $179.00 $190.00 $202.00 $207.00 $210.00 $224.00 $235.00 $238.00 $245.00
20 $139.00 $145.00 $151.00 $160.00 $174.00 $190.00 $202.00 $214.00 $221.00 $224.00 $235.00 $246.00 $255.00 $264.00
22 $144.00 $150.00 $156.00 $164.00 $178.00 $194.00 $207.00 $221.00 $230.00 $233.00 $244.00 $253.00 $265.00 $274.00
24 $150.00 $153.00 $160.00 $168.00 $183.00 $198.00 $210.00 $224.00 $233.00 $239.00 $249.00 $260.00 $272.00 $281.00
26 $160.00 $163.00 $171.00 $180.00 $194.00 $210.00 $224.00 $235.00 $244.00 $249.00 $257.00 $268.00 $283.00 $292.00
28 $166.00 $169.00 $176.00 $191.00 $202.00 $220.00 $235.00 $246.00 $253.00 $260.00 $268.00 $271.00 $289.00 $300.00
30 $170.00 $178.00 $186.00 $200.00 $211.00 $224.00 $238.00 $255.00 $265.00 $272.00 $283.00 $289.00 $299.00 $311.00
32 $172.00 $180.00 $190.00 $209.00 $220.00 $231.00 $245.00 $264.00 $274.00 $281.00 $292.00 $300.00 $311.00 $321.00
34 $179.00 $189.00 $200.00 $221.00 $233.00 $244.00 $256.00 $276.00 $289.00 $295.00 $305.00 $314.00 $327.00 $339.00
36 $190.00 $200.00 $212.00 $229.00 $240.00 $258.00 $269.00 $289.00 $299.00 $308.00 $316.00 $326.00 $339.00 $350.00
Size List Price
6 VCD $65.00
7 VCD $69.00
8 VCD $73.00
9 VCD $75.00
Size List Price
10 VCD $79.00
12 VCD $85.00
14 VCD $90.00
Size List Price
16 VCD $95.00
18 VCD $109.00
20 VCD $125.00
MODEL HK2000
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 (continuous) 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 sensor (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.
Model List
HK2000 $250.00
OAS 53.00
MODEL EC
Enthalpy Control
Senses outside air
temperature and
humidity. When these
conditions are acceptable fresh air can be
used instead of cooling. List $460.00