Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500302-01 Printed in U.S.A. Form 50FC-20-30-01SM Pg CL-2 1-24 Replaces: NEW
© 2024 Carrier
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CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
PRESSURES
Refrigerant Suction _____________ PSIG
Refrigerant Discharge _____________ PSIG
Verify Refrigerant Charge using Charging Charts (Y/N) _____
GENERAL
Economizer minimum vent and changeover settings to job requirements (if equipped) (Y/N) _____
Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____
Verify outdoor fan operation. On units with head pressure controls, verify outdoor fan ramps up (Y/N) _____
IV. HUMIDI-MIZER
®
SYSTEM START-UP
STEPS
1. Start unit In cooling (Close Y1) (Y/N) _____
OBSERVE AND RECORD
A. Suction pressure _______________ PSIG
B. Discharge pressure _______________ PSIG
C. Entering air temperature _______________ ° F
D. Leaving air temperature _______________ ° F
2. Switch unit to mixed cool and reheat mode (subcool) (Y/N) _____
OBSERVE
A. Reduction in suction pressure (5-7 psi expected) (Y/N) _____
B. Discharge pressure unchanged (Y/N) _____
C. Delta temperature decreases, close to neutral air (Y/N) _____
3. Switch unit to hot gas reheat mode.
OBSERVE
A. Suction pressure increases to normal cooling level
B. Discharge pressure decreases (35-50 psi) (Limited by head pressure control)
C. Liquid temperature returns to normal cooling level
4. With unit in dehumid mode switch to heating and verify compressor and outdoor fan stop (Y/N) _____
5. Turn off heating, cooling, and reheat, restore set points for thermostat and humidistat (Y/N) _____
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