Optional) Connect Exhaust Ducting - Christie CP2000-M User Manual

Section 2: Installation & Setup

2.1.4 (Optional) Connect Exhaust Ducting

If the room the projector is installed in is not
equipped to ventilate up to 11,000 BTU (per
hour) the optional duct (P/N: 119-103105-
xx) must be installed to emit the constant
stream of warm exhaust air from the
projector to the outside of the building.
Connect pre-installed outside-venting
ductwork via the 8" inside diameter
fireproof ducting material attached to the
projector's top exit port. Confirm that 1)
there are no obstructions or 'kinks" within
the ducting, 2) all air intake areas of the
projector are clear and exposed, 3) The pre-
installed outside-venting duct should be
rigid at the projector and must also include a
heat extractor/blower that maintains at least
450 CFM (212 L/s) when measured at the
projector exhaust opening.
Calculating CFM in the 8" duct (Imperial): Use an anemometer to measure the ft/min or ft/sec at the rigid
end of the open duct that connects to the projector. Ensure the measurement is taken right at the very end and
without the projector connected. Then multiply the reading by the cross-sectional area of the 8" duct to
calculate the cubic feet/min airflow.
Imperial formula: Measured linear ft/min x 0.34 = CFM)
Calculating the flow rate in the 200mm duct (Metric): Use an anemometer to measure the air velocity in m/
sec at the rigid end of the open duct that connects to the projector. Ensure the measurement is taken right at the
very end and without the projector connected. Then multiply the reading by the cross-sectional area of the
200mm duct to calculate the airflow in L/s.
Metric formula: Measured linear air velocity m/s x 31.4 = L/s
Calculations should show 450 CFM (212 L/s) airflow in the 8"/200mm exhaust duct. DO NOT mount the
extractor on the projector as this may introduce some vibration into the image.
2-4
Figure 2-3 Connect Ducting
CP2000-M/MR User Manual
020-100123-07 Rev. 1 (12-2009)