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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. 04-53480257-01
Printed in U.S.A.
Form 48TC-7-16-02SI
Pg CL-2
5-2020
Replaces: 48TC-7-16-01SI
© 2020 Carrier
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PRESSURES
Gas Inlet Pressure IN. WG
____________ in. wg
Gas Manifold Pressure
STAGE 1 _____________ in. wg
STAGE 2 _____________ in. wg
Refrigerant Suction
CIRCUIT A _____________ PSIG
CIRCUIT B _____________ PSIG
Refrigerant Discharge
CIRCUIT A _____________ PSIG
CIRCUIT B _____________ 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) _____
IV. HUMIDI-MIZER
®
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. Liquid 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. Liquid 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. Liquid 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 48TC A/B07 Series
Page 5: ...5 Fig 2 Dimensional Drawing for Units Built On and After 4 15 19 Size 07 ...
Page 6: ...6 Fig 3 Dimensional Drawing for Units Built Prior To 4 15 19 Size 07 ...
Page 7: ...7 Fig 4 Unit Corner Weights and Clearances Size 07 ...
Page 8: ...8 Fig 5 Base Rail Details Size 07 ...
Page 9: ...9 Fig 6 Thru the Base Charts Size 07 ...
Page 10: ...10 Fig 7 Unit Dimensional Drawing Size 08 09 12 ...
Page 11: ...11 Fig 7 Unit Dimensional Drawing Size 08 09 12 ...
Page 12: ...12 Fig 8 Unit Dimensional Drawing Size 14 ...
Page 13: ...13 Fig 8 Unit Dimensional Drawing Size 14 cont ...
Page 14: ...14 Fig 9 Unit Dimensional Drawing Size 16 ...
Page 15: ...15 Fig 9 Unit Dimensional Drawing Size 16 cont ...
Page 20: ...20 Fig 14 48TC 16 Roof Curb Details ...
Page 39: ...39 Fig 69 48TC 07 14 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...
Page 40: ...40 Fig 70 48TC 16 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...
Page 57: ...57 Fig 83 Ultra Tech Scroll Compressor Diagram ...