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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500199-01
Printed in U.S.A.
Form 50KC-4-6-02SI
Pg CL-2
11-18
Replaces: 50KC-4-6-01SI
© Carrier Corporation 2018
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CUT ALON
G
DOTT
E
D
LINE
CU
T ALONG DOTTED LINE
IV. HUMIDI-MIZER
®
START-UP
NOTE: Units e
q
uipped with either SystemVu™ or RTU Open controls have Service Test menus or modes that can assist with the
Humidi-MiZer System Start-Up function and provide the means to make the o
b
servations listed for this start-up.
STEPS
1. Check CTB for jumper 5, 6, 7 (Jumper 5, 6, 7 must
b
e cut and open) (Y/N) _____
2. Open humidistat contacts (Y/N) _____
3. 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. Li
q
uid line temperature at outlet or reheat coil
_______________ ° 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) _____
4. Check unit charge per charging chart (Y/N) _____
(Jumper 32L Motormaster
®
temperature sensor during this check. Remove jumper when complete.)
5. Switch unit to high-latent mode (su
b
-cooler)
b
y closing humidistat with Y1 closed (Y/N) _____
OBSERVE
A. Reduction in suction pressure (5 to 7 psi expected) (Y/N) _____
B. Discharge pressure unchanged (Y/N) _____
C. Li
q
uid temperature drops to 50 to 55°F range (Y/N) _____
D. LSV solenoid energized (valve closes) (Y/N) _____
6. Switch unit to dehumid (reheat)
b
y opening Y1 (Y/N) _____
OBSERVE
A. Suction pressure increases to normal cooling level (Y/N) _____
B. Discharge pressure decreases (35 to 50 psi) (Limited
b
y Motormaster control)
C. Li
q
uid temperature returns to normal cooling level (Y/N) _____
D. LSV solenoid energized (valve closes) (Y/N) _____
E. DSV solenoid energized, valve opens (Y/N) _____
7. With unit in dehumid mode close W1 compressor and outdoor fan stop; LSV and DSV solenoids de-energized
(Y/N) _____
8. Open W1 restore unit to dehumid mode (Y/N) _____
9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____
10. Restore set-points for thermostat and humidistat (Y/N) _____
REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS.
Summary of Contents for 50KC*A/B0 Series
Page 4: ...4 Fig 2 Dimensional Drawing...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont...
Page 22: ...22 Fig 38 Electro Mechanical Control Wiring Diagram...
Page 23: ...23 Fig 39 Electro Mechanical Control Wiring Diagram with Humidi MiZer System...
Page 24: ...24 Fig 40 Electro Mechanical Power Wiring...
Page 25: ...25 Fig 41 PremierLink Wiring Schematic...
Page 26: ...26 Fig 42 PremierLink Wiring Schematic with Humidi MiZer System...
Page 27: ...27 Fig 43 RTU Open System Control Wiring Diagram...
Page 28: ...28 Fig 44 RTU Open System Control Wiring Diagram with Humidi MiZer System...
Page 43: ...43 Fig 57 TXV Metering Device Position in Reheat Coil Typical Diagram for Sizes 04 06 TXV...
Page 44: ......
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