Christie CP2000-M Setup Guide download pdf (Page 46)

3-4 CP2000-M/MR Setup Guide

020-100205-03 Rev. 1 (05/09)

Section 3: Installation & Setup

3.4 (OPTIONAL) CONNECT EXHAUST DUCTING

If the room in which the projector is

installed is not equipped to ventilate

up to 11,000 BTU (per hour) the

duct (119-103105-xx) must be

installed to exhaust the constant

stream of warm 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 top exit port of the

projector. Confirm that:

• there are no obstructions or

‘kinks” within the ducting,

• all air intake areas of the projector

are clear and exposed,

• the pre-installed outside-venting duct is rigid at the projector and must include a heat extractor/

blower that maintains a minimum of 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.

FIGURE 3-3 CONNECT DUCTING

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Christie CP2000-M Setup Guide Page 46