Exhaust Ducting; Airflow Requirements - Christie CP2000 User Manual

Exhaust Ducting 
LIT MAN USR CP2000
020-100032-04 Rev. 1 (03/14)
extra cable lengths from dangling or touching other components. Provide proper
strain relief as necessary. Make sure hoses are free of kinks and sharp turns.
Connect sources and communication links at any time—see 2.2, Installing and
Connecting Sources and 2.3, Connecting for Communications.
Warm exhaust air from the CP2000 must vent to
outside of the building. Connect pre-installed outside-
venting ductwork via 8" inside diameter fireproof
ducting material attached to projector's top exit port.
Confirm that 1) there are no obstructions or "kinks"
within the ducting, 2) all air intake areas of the
CP2000 are clear and exposed, and 3) the vane switch
at the exit duct is moving freely. The pre-installed
outside-venting duct should be rigid at the projector,
and must also include a heat extractor/blower that
maintains at least 600 CFM when measured at the
projector exhaust opening (Table 2.1).
Table 2.1. Airflow Requirements
Model Lamp
(kW)
2
CP2000-i/h/S
3
CP2000-h/S 4.5
6
CALCULATE CFM in 8" DUCT:
the rigid end of the duct that will connect to the projector (measure right at the end).
Then multiply the reading by the cross-sectional area of the 8" duct to calculate the
cubic feet/min airflow. The formula is:
For any CP model, calculations should show 600 CFM
airflow in the 8" exhaust duct. Add extractors/boosters
as needed for your site, as the vane switch (see right)
will prevent the projector from operating if the airflow
is inadequate. Do not mount extractor on the projector.
NOTE: If the duct becomes significantly blocked—or if
a fan fails—the projector should trigger an alarm
before becoming overheated or unsafe. Regardless,
check airflow regularly as described in 6.2,
Maintaining Proper Cooling.
Never disable a vane switch. Attempting to operate the
projector with inadequate airflow can result in
dangerous overheating of the projector.
Minimum Exhaust Airflow Rate
600 ft /min.
3
600 ft 3 /min.
600 ft 3 /min.
600 ft 3 /min.
Use an air flow meter to measure the ft/min or ft/sec at
Measured linear ft/min x 0.34 = CFM
WARNING
INSTALLATION AND SETUP
2-11