30
System Start-Up (Continued)
Figure 5-1
Condenser Fan Locations
Verifying Proper Condenser Fan Rotation
1. “Open” the field supplied disconnect switch or circuit pro-
tector switch that provides power to the compressor unit
and lock it in the “Off” position.
2. Open the disconnect switch or circuit protector switch
that provides power to the condensing unit.
3. Install temporary jumpers across terminals 1TB2-1 to
1TB2-3, 1TB2-1 to 1TB2-8, and the applicable cycling
controls, i.e., pressure switches and ambient thermo-
stats, to start the condenser fans, as illustrated in Figure
5-2. For CCAD applications, refer to the illustration in
Figure 3-8 for proper jumper connections.
R O T A T I N G P A R T S !
UNIT STARTS AUTOMATICALLY
Make sure all personnel are standing clear of the unit
before proceeding. The programmed components
will start when the TEST START time designated in
the previous step has elapsed.
4. “Close” the disconnect switch or circuit protector switch
that provides power to the condensing unit. The fans will
start when the power is applied.
5. Check the condenser fans for proper rotation. The direc-
tion of rotation is clockwise when viewed from the top of
the unit.
All Fans are Rotating Backwards;
1. Turn the field supplied disconnect switch or circuit protec-
tor switch that provides power to the condensing unit to
the “Off” position. Lock the disconnect switch in the open
position while working at the unit.
2. Interchange any two of the field connected main power
wires at the unit terminal block 1TB1 in the unit control
panel.
3. Remove all temporary jumpers previously installed in
step 3 of “Verifying Proper Condenser Fan Rotation”.
Note: Interchanging “Load” side power wires at the
fan contactors will only affect the individual fan
rotation. Ensure that the voltage phase sequence at
the main terminal block 1TB1 is ABC as outlined in
the “Electrical Phasing” section.
Some Fans are Rotating Backwards;
1. “Open” the field supplied disconnect switch upstream of
the unit. Lock the disconnect switch in the “Open” posi-
tion while working at the unit.
2. Interchange any two of the fan motor leads at the fan
contactor for each fan that is rotating backwards.
3. Remove all temporary jumpers previously installed in
step 3 of “Verifying Proper Condenser Fan Rotation”.
Summary of Contents for CAUC-C20
Page 8: ...8 Figure 3 2 CAUC C20 Unit Dimensional Data Recommended Clearances...
Page 9: ...9 Figure 3 2 Continued CAUC C25 Unit Dimensional Data Recommended Clearances...
Page 10: ...10 Figure 3 2 Continued CAUC C30 Unit Dimensional Data Recommended Clearances...
Page 11: ...11 Figure 3 2 Continued CAUC C40 Unit Dimensional Data Recommended Clearances...
Page 12: ...12 Figure 3 2 Continued CAUC C50 Unit Dimensional Data Recommended Clearances...
Page 13: ...13 Figure 3 2 Continued CAUC C60 Unit Dimensional Data Recommended Clearances...
Page 24: ...24 Figure 3 7 Typical Interface Connection Diagram for CCAD 20 through 60 Ton Package Chiller...
Page 25: ...25...
Page 33: ...33 Blank...
Page 34: ...34 Figure 5 2 Typical Wiring Schematic for 20 through 60 Ton Units...
Page 35: ...35...
Page 36: ...36 Figure 5 3 Typical Control Panel Connections Diagram for 20 through 60 Ton Units...
Page 37: ...37...
Page 42: ...42...
Page 43: ...43...
Page 44: ...44...
