Carrier 140/E Series Installation, Start--Up, Operating, And Service And Maintenance page 18

UPFLOW RETURN AIR CONFIGURATIONS AND RESTRICTIONS
|
AIR FLOW MODELS RETURN AIR RETURN AIR RETURN AIR RETURN AIR |
CONNECTION 1 CONNECTION 2 CONNECTION 3 COMBINATIONS
1
ONLY ONLY ON_ OF1,2, AND 3
066.060,-22AND YES YES YES YES |
-20 MODELS
]
ALLOTHERMODELS YES YES YES YES
g
Fig. 18 - Upflow Return Air Configurations and Restrictions
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DOWNFLOW RETLJRN AIRCONFIGURATIONSANDRESTRICTIONS
AIR FLOW MODELS RETURN AIR RETURN AmR RETURN AIR RETURN AIR
CONNECTION 1 CONNECTION 2 CONNECTION 3 COMBINATIONS
ONLY ONLY ONLY OF 1,2, AND 3
066.066, -22 AND YES NO NO NO
-20 MODELS
ALL OTHER MODELS YES NO NO NO
Fig. 19 - Downflow Return Air Configurations and Restrictions
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RETURN /
AIR
RE]URN
AIR
A RFLOW MODELS
............. I
NOT PERMITTEDFOR
AIR FLOWMODELS
......................... ////_L_ ......................... HORIZONAL
RETURN RETURNAIR
HORIZONALNO]E; RESI RIC HONLEFTSAMEFOR _ AIR RESTRICTIONS
',% / HORIZONTAL RETURN AIR CONFIGURATIONS AND RESTRICTIONS
AIR FLOW MODELS RETURN AIR RETURN AiR RETURN AIR RETURN AIR
CONNECTmON 1 CONNECTmON 2 CONNECTION 3 COMBINATIONS
ONLY ONLY ONLY OF 1, 2, AND 3
066.060, -22 AND YES NO NO NO
-20 MODELS
ALL OTHER MODELS YES YES YES YES
Fig. 20 - Horizontal Return Air Configurations and Restrictions
A02162
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