Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500275-01
Printed in U.S.A.
Form 50JC-4-6-01SM
Pg CL-2
11-21
Replaces: New
© 2021 Carrier
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GENERAL
Economizer minimum vent and changeover settings to job requirements (Y/N) ______
III. HUMIDI-MIZER
®
SYSTEM START-UP
STEPS
1. Use Service Test mode to turn on cooling.
Turn on COOL TEST CMP SPD to 4500rpm under Cool Test menu (Y/N) ______
OBSERVE AND RECORD
A. Suction pressure
____________ PSIG
____________ PSIG
B. Discharge pressure
____________ PSIG
____________ PSIG
C. Entering air temperature
____________ °F
____________ °F
D. Liquid temperature
at outlet or reheat coil
____________ °F
____________ °F
E. Confirm correct rotation for compressor (Y/N) ______
F. Check for correct ramp-up of outdoor fan motor as condenser coil warms (Y/N) ______
2. Check unit charge per charging chart (Y/N) ______
3. Switch unit to HIGH-LATENT mode (SUBCOOL) by turning Humidi-MiZer test to SUBCOOL
under the COOL TEST menu (Y/N) ______
OBSERVE
A. Reduction in suction pressure (5 to 7 psi expected) (Y/N) ______
B. Discharge pressure unchanged (Y/N) ______
C. Liquid temperature drops to 50 to 55°F range (Y/N) ______
D. CLV solenoid energized (valve closes for no flow) (Y/N) ______
4. Switch unit to DEHUMID (REHEAT) by turning Humidi-MiZer test to REHEAT under the COOL TEST menu
(Y/N) ______
OBSERVE
A. Suction pressure increases to normal cooling level (Y/N) ______
B. Discharge pressure decreases 30 to 50 PSI (Y/N) ______
C. Liquid temperature returns to normal cooling level (Y/N) ______
D. CLV solenoid energized, valve closes for no flow (Y/N) ______
E. RDV solenoid energized, valve opens for flow (Y/N) ______
5. Switch unit to OFF by turning Humidi-MiZer test to OFF under the COOL TEST menu
Compressor and outdoor fan stop, CLV and RDV solenoids de-energized (Y/N) ______
