Case Study · Commercial Office
Angiotech: Electronic Modulation Holds 45 to 50% RH All Summer
An APR‑E7 on the lead 10-ton circuit of a 40-ton system modulated 70% to a 55°F discharge-air setpoint, holding 45 to 50% RH all summer and letting the customer raise thermostat setpoints.
The Challenge
The Warko Group's service manager wanted to test the APR‑E control's ability to minimize cycling and extend runtime on an air-conditioning system serving an office environment.
The Solution
An APR‑E7 was installed on the lead 10-ton circuit of a 40-ton system at Angiotech, configured to modulate 70% in response to discharge-air temperature while holding a precise 55°F setpoint.
“Humidity levels within the space were held at 45% to 50% all summer long within an office environment. The customer was very pleased and expressed that the temperature setpoint was raised in most of the office zones as a result of the people within the space feeling more comfortable.”
Bob Reichenbach · Service Manager, The Warko Group
The Results
The electronic modulation held conditions steady through the cooling season, and:
- Held 45 to 50% RH all summer in an office environment
- Improved comfort enough to raise thermostat setpoints in most zones
- Removed the need for occupants to lower thermostats over humidity
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