Using The Dg-700'S Cruise Control Feature - TEC DG-700 Operating Instructions Manual

Appendix A
A.5 Using the DG-700's Cruise Control Feature
All new DG-700 gauges include a Cruise Control feature which allows you to automatically control Minneapolis Blower
Door and Duct Blaster fans to maintain a constant building or duct pressure without having the gauge connected to a
computer. Common applications of the Cruise Control feature include:
•
Quickly measuring building airtightness using a "one-point" 50 Pa test.
•
Quickly measuring duct airtightness using a "one-point" 25 Pa total leakage test.
•
Simultaneously controlling both the Blower Door and Duct Blaster fans during a leakage to outside duct airtightness
test. During this test, Cruise Control on the Blower Door's DG-700 will maintain a contant 25 Pa building pressure
while the DG-700 gauge connected to the Duct Blaster fan maintains a constant 0 Pa pressure in the duct system.
•
Maintaining a constant building pressure while pressure pan testing, or locating and sealing building and duct system
air leaks.
•
Performing series leakage to quantify leakage rates between various zones within a building.
In order to use the Cruise Control feature you will need the following 3 items:
- A "Cruise compatible" DG-700 gauge. Your DG-700 is compatible with
Cruise Control if the CONFIG, CLEAR, START, and ENTER keys have
additional red lettering below the main black script.
- A Blower Door or Duct Blaster fan speed controller with a 3.5 mm
communication jack on the side of the controller box.
- A fan control cable to connect the DG-700 fan control jack to the speed
controller communication jack.
Quick Guides for Using the DG-700 with Energy Conservatory Test Devices
Fan Control cable.
Fan control cable.
36
Fan control jacks.
Operating Instructions
for the DG700