82
Fig. 111 — V-Belt Force Label
BELT TENSION METHOD
Requires belt tension gage that measures tension in belt in units of
lbs force.
Fig. 112 — Belt Drive Motor Mounting
Pre-Start and Start-Up
This completes the mechanical installation of the unit. Refer to
the unit’s Service Manual for detailed Pre-Start and Start-Up
instructions. Download the latest versions from HVAC Part-
ners (www.hvacpartners.com).
Troubleshooting the UltraTech™ Compressor
The UltraTech
1
compressor’s molded plug should be used at all
times. The maximum power is 5A.
MODULATION CONTROL INPUT SPECIFICATIONS
The compressor will modulate from part load to full load when
the voltage supplied to the molded plug is 18 to 28vdc or 18 to
28 vac rectified to vdc. The compressor will modulate from
full load to part load when the current in the circuit drops be-
low 0.9 MA. See Table 19 and Fig. 113 for details.
Table 1
Table 2
BELT
CROSS
SECTION
SMALLEST
SHEAVE
DIAMETER
BELT DEFLECTION FORCE (LBS)
UNNOTCHED
BELTS
NOTCHED BELTS
USED
NEW
USED
NEW
A, AX
3.0-3.6
3.7
5.5
4.1
6.1
3.8-4.8
4.5
6.8
5.0
7.4
5.0-7.0
5.4
8.0
5.7
8.4
B, BX
3.4-4.2
—
—
4.9
7.2
4.4-5.6
5.3
7.9
7.1
10.5
5.8-8.6
6.3
9.4
8.5
12.6
BELT CONDITION
TENSION FORCE IN BELT (LBS)
New
100
Used
80
1. UltraTech™ is a trademark of Emerson Climate Technologies, Inc.
BLOWER PULLEY
V-BELT
MOTOR
PULLEY
MOTOR
MOTOR MOUNTING
PLATE
MOUNTING
BOLTS (4)
Table 19 — Troubleshooting UltraTech Compressor
STAGE
CAPACITY
METERING
LIQUID LINE
SOLENOID
COMPRESSOR
UNLOADER
FOR ULTRATECH
COMPRESSOR
TROUBLESHOOTING
(COMPRESSOR CURRENT)
FOR LIQUID LINE SOLENOID
VALVE TROUBLESHOOTING
(TOP EVAPORATOR COIL
TEMPERATURE)
Y1
Part Load
(66%)
TXV
Closed (De-
energized)
De-energized
Approx. 80% or less
Top section of the evaporator
coil will not be cold (U-bend
tubes)
Y1+Y2
Full Load
(100%)
TXV+Fixed
Open (Energized)
Energized
100%
Top section of the evaporator
coil will be cold (U-bend tubes)
Summary of Contents for WeatherMaker 50TC07 Series
Page 4: ...4 Fig 2 Dimensional Drawing for Units Built on and After 4 15 19 Size 07 ...
Page 5: ...5 Fig 3 Dimensional Drawing for Units Built Prior to 4 15 19 Size 07 ...
Page 6: ...6 Fig 4 Corner Weights and Clearances Size 07 ...
Page 7: ...7 Fig 5 Base Rail Details Size 07 ...
Page 8: ...8 Fig 6 Thru the Base Charts Size 07 ...
Page 9: ...9 Fig 7 Unit Dimensional Drawing Size 08 09 12 ...
Page 10: ...10 Fig 7 Unit Dimensional Drawing Size 08 09 12 cont ...
Page 11: ...11 Fig 8 Unit Dimensional Drawing Size 14 ...
Page 12: ...12 Fig 8 Unit Dimensional Drawing Size 14 cont ...
Page 13: ...13 Fig 9 Unit Dimensional Drawing Size 16 Unit ...
Page 14: ...14 Fig 9 Unit Dimensional Drawing Size 16 Unit cont ...
Page 19: ...19 Fig 14 Roof Curb Details Size 16 Unit ...
Page 26: ...26 Fig 34 50TC 07 Control Wiring Diagram ...
Page 27: ...27 Fig 35 50TC 07 Power Wiring Diagram ...
Page 28: ...28 Fig 36 50TC M08 12 Control Wiring Diagram ...
Page 29: ...29 Fig 37 50TC D E Wiring Diagram 08 14 Size Units ...
Page 30: ...30 Fig 38 Single Stage Cooling without VFD Power Wiring Diagram Sizes 08 12 ...
Page 31: ...31 Fig 39 2 Stage Cooling with VFD Power Wiring Diagram Sizes 08 12 ...
Page 32: ...32 Fig 40 2 Stage Cooling with VFD Power Wiring Diagram Size 14 ...
Page 33: ...33 Fig 41 50TC 16 Wiring Diagram ...
Page 34: ...34 Fig 42 2 Stage Cooling with VFD Power Wiring Diagram Size 16 ...
Page 35: ...35 Fig 43 50TC 07 Units Wiring Diagram with Humidi MiZer System Option ...
Page 36: ...36 Fig 44 50TC 08 14 Units Wiring Diagram with Humidi MiZer System Option ...
Page 37: ...37 Fig 45 50TC 16 Wiring Diagram with Humidi MiZer System Option ...
Page 69: ...69 Fig 97 Typical PremierLink Control Wiring Diagram Size 07 Shown ...
Page 70: ...70 Fig 98 50TC M08 12 PremierLink Control Wiring Diagram ...
Page 71: ...71 Fig 99 Typical PremierLink Control Wiring Diagram Dual Compressor Sizes 08 12 shown ...
Page 72: ...72 Fig 100 Typical PremierLink Control Wiring Diagram with Humidi MiZer System Option ...
Page 73: ...73 Fig 101 Typical RTU Open Controller Wiring Diagram 50TC 07 Units ...
Page 74: ...74 Fig 102 50TC M08 12 RTU Open Controller Wiring Diagram ...
Page 75: ...75 Fig 103 Typical RTU Open Controller Wiring Diagram 50TC D E08 14 Units ...
Page 76: ...76 Fig 104 RTU Open Controller Wiring Diagram 50TC 16 Unit ...
Page 83: ...83 Fig 113 UltraTech Scroll Compressor ...
Page 84: ......
Page 85: ......