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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. 04-53500216-01
Printed in U.S.A.
Form 50TCQ-8-12-01SI
Pg CL-2
1-19
Replaces: 50TCQ-8-9-03SI, 50TCQ-12-02SI
© Carrier Corporation 2019
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CUT ALON
G
DOTT
E
D
LINE
CU
T ALONG DOTTED LINE
GENERAL
Economizer minimum vent and changeover settings to job re
q
uirements (if e
q
uipped) (Y/N) _____
Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____
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 observations listed for this start-up.
STEPS
1. Check CTB for jumper 5, 6, 7 (Jumper 5, 6, 7 must be 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 (sub-cooler) by 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°F to 55°F range (Y/N) _____
D. LSV solenoid energized (valve closes) (Y/N) _____
6. Switch unit to dehumid (reheat) by opening Y1 (Y/N) _____
OBSERVE
A. Suction pressure increases to normal cooling level
B. Discharge pressure decreases (35 to 50 psi) (Limited by Motormaster control)
C. Li
q
uid temperature returns to normal cooling level
D. LSV solenoid energized (valve closes)
E. DSV solenoid energized, valve opens
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 WeatherMaker 50TCQ*08
Page 4: ...4 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing 12 Size Unit ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing 12 Size Unit cont ...
Page 19: ...19 Fig 25 Typical 50TCQ Control Wiring Diagram Sizes 08 09 ...
Page 20: ...20 Fig 26 Typical 50TCQ Control Wiring Diagram Size 12 ...
Page 21: ...21 Fig 27 50TCQ 08 09 Power Wiring Diagram ...
Page 22: ...22 Fig 28 Typical 50TCQ 12 Power Wiring Diagram 208 230 v 3 Phase 60Hz Unit Shown ...
Page 45: ......