MILLENNIUM™ ROOFTOP
INSTALLATION
INSTRUCTION
CONTROLS UPGRADE FROM STYLE A TO
STYLE C
CONTENTS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CV UNITS W/O ECONOMIZER . . . . . . . . . . . . . . . . 3
UNITS W/O ECONO & OPT GAS OR ELEC HEAT . . . . 5
CV UNITS WITH ECONOMIZER . . . . . . . . . . . . . . 10
CV UNITS W/ ECONOMIZER & OPTIONAL HEAT . . . 11
LIST OF FIGURES
1 POWER & CONTROL WIRING LOCATION . . . . . . . . . 3
2 EXISTING CTRL PANEL COMPONET LOC . . . . . . . . . 3
3 TYPICAL THERMOSTAT WIRING . . . . . . . . . . . . . . . . 3
4 NEW LOW VOLTAGE CONTROL COMPONETS . . . . . 4
5 CV UNIT W/O A ECONO WIRING DIA . . . . . . . . . . . . . 6
6 CV UNIT W/O ECONO WIRING DIA . . . . . . . . . . . . . . . 7
7 COOLING UNIT W/ ELEC HT DIA & W/O ECONO . . . . 8
8 CV UNIT W/ GAS HT & W/O ECONO WIRING DIA . . . 9
9 CV UNIT W/ ECONO WIRING DIA . . . . . . . . . . . . . . . 12
10CV UNIT W/ ECONO CONNECTION DIA . . . . . . . . . . 13
11CV UNIT W/ GAS HT & ECONO WIRING DIA . . . . . . 14
12UNIT W/ ECONO & ELEC HT WIRING DIA . . . . . . . . . 15
MODELS:
Y13
Y14
STYLE A TO STYLE C
LIST OF TABLES
1 PARTS SUPPLIED FOR CONTROL CHANGE . . . . . . . 2
2 PARTS SUPPLIED FOR CV UNITS W/O ECONO . . . . 2
3 PARTS SUPPLIED FOR CV UNITS W/ OPT HEAT . . . 3
4 PARTS SUPPLIED FOR CV UNITS W/ ECONO . . . . . 10
5 PARTS SUPPLIED FOR CV UNITS W/ OPT HEAT . . 10
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
035-16728-000 REV A (799)Form 530.70-N1.11Y
530.70-N1.11Y
TABLE 3: PARTS SUPPLIED FOR CV UNITS WITH
OPTIONAL HEAT
QTY
PART NO.
DESCRIPTION
820/Y
823/Y
1
373-18689-610
822/BR
1
373-18689-611
826/BR
1
1
2
AB144GRA7171844
AB144WHT7171845
024-24116-000
844/GY
845/W
Isolation Relay
FIGURE 3 : TYPICAL THERMOSTAT WIRING
OPEN ALL DISCONNECTS BEFORE SERVIC-
ING THIS UNIT.
The new thermostat requires a thermostat cable with a mini-
mum of 10 conductors that run from the sub-base to the con-
trol box. The new wire will be connected as shown in Figure
3.
FIGURE 1: POWER & CONTROL WIRING
LOCATION
1. Locate the W7400 control module in the box-electric
(Figures 1 and 2).
2. Remove the following wires form the W7400 control
module and from the unit.
•
•
•
•
•
•
•
•
•
201/R
208/BR
254/GY
252/Y
257/Y
248/GY
240/Y
244/0
246/PR
NOTE: Wire ties will need to be removed to remove above
wires.
3. Disconnect wire 204/BR from the TR terminals on the
w7400 control module.
NOTE: These wires will be used with the new controls.
4. Disconnect thermostat wire from terminals 1-4 on the
W7400 control module.
FIGURE 2 : EXISTING CONTROL PANEL COMPO-
NET LOCATION
NOTE: This wire will be used with the new controls.
NOTE: STEPS 5 THROUGH 7 ARE FOR OPTIONAL HEAT
ONLY.
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FIGURE 4 : NEW LOW VOLTAGE CONTROL COMPONETS
5. Disconnect wire 526/R from the 30FU location.
14. Attach wire 836/BR from TB2 to 8T-6.
NOTE: This wire will be used with the new controls.
15. Attach wire 842/BR from 8T-6 to MR-B.
16. Attach wire 814/BR from MR-B to CR1-B.
6. Disconnect wire 533/GY from the W7400 control module
G terminal.
17. Attach wire 813/BR from CR1-B to CR2-B.
18. Attach wire 812/BR from CR2-B to CR3-B.
19. Attach wire 834/BR from CR3-B to CR4-B.
20. Attach wire 835/BR from CR4-B to TB12-C.
21. Attach wire 800/GY from MR-A to TB12-G.
22. Attach wire 801/Y from CR1-A to TB12-Y1.
23. Attach wire 802/O from CR2-A to TB12-Y2.
24. Attach wire 803/PR from CR3-A to TB12-Y3.
25. Attach wire 821/GY from CR4-A to TB12-Y4.
26. Attach wire 240/Y from CR1-5 to LOR1-1-7.
27. Attach wire 244/O from CR2-5 to LOR1-2-9.
28. Attach wire 839/PR from CR3-5 to LOR2-1-7.
29. Attach wire 248/GY from CR4-5 to LOR2-2-9.
30. Attach wire 252/R from CL01 to MR-7.
7. Disconnect wires 510/GY and 512/w from W1 & W2.
NOTE: These wires will be used with the new controls.
8. Remove the W7400 control module from the control box.
9. Locate the new control plate in box-electric in the loca-
tion shown in Figure 4.
10. Using the four drill screws secure the back plate to the
box-electric.
11. Locate the packet of wires marked with “No Econo-
mizer”.
12. Attach thermostat wires to new location TB12
(See Figure 3).
NOTE: For the following steps (13-34) see Figures 5, and 6
respectively.
13. Attach wire 230/R from 8T-7 to TB12-R .
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31. Attach wire 816/R from MR-7 to 8T-2.
32. Attach wire 201/R from 8T-1 to 30FU.
33. Attach wire 204/BR to the new location on 8T-2.
34. Attach wire 257/Y from APS-N0 to CR1-7.
35. Attach wire 817/Y from CR1-7 to CR2-7.
36. Attach wire 818/Y from CR2-7 to CR3-7.
37. Attach wire 819/Y from CR3-7 to CR4-7.
NOTE: IF UNIT HAS OPTIONAL HEAT PLEASE CONTINUE
WITH STEP 38.
UNITS W/O ECONOMIZER AND OPTIONAL GAS OR
ELECTRIC HEAT
Units with optional Gas or Electric heat should follow the
steps below. See Figure 7 for Gas Heat and Figure 8 for
Electric Heat.
NOTE: This wire will be used with the new controls.
38. Mount WR1 & WR2 relays in the heat section.
39. Attach wire 526/R to the new location on 8T-7.
40. Attach wire 845/W from TB12-W1 to WR1-A.
1
41. Attach wire 844/GY from TB12-W2 to WR2-A .
42. Attach wire 820/Y from CR4-7 to WR1-7.
43. Attach wire 823/Y from WR1-7 to WR2-71.
44. Attach wire 826/BR from WR1-B to WR2-B1.
45. Attach wire 822/BR from WR1-B to TB2.
46. Attach wire 512/W to the new location at WR1-5.
47. Attach wire 510/GY to the new location at WR2-51.
48. Attach wire 533/GY to the new location on TB12-G.
END OF INSTALLATION FOR CV UNIT WITHOUT ECONO-
MIZER.
1. Only on units with 480 and 780 MBH gas unit or with
80kW and 180kW electric heat.
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FIGURE 5 : CONSTANT VOLUME UNIT WITHOUT A ECONOMIZER WIRING DIAGRAM
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FIGURE 6 : CONSTANT VOLUME UNIT W/O ECONOMIZER WIRING DIAGRAM
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FIGURE 7 : COOLING UNIT WITH ELECTRIC HEAT DIAGRAM AND WITHOUT ECONOMIZER
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FIGURE 8 : CV UNIT WITH GAS HEAT AND WITHOUT ECONOMIZER WIRING DIAGRAM
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TABLE 5: PARTS SUPPLIED FOR CV UNITS W/
CV UNITS WITH ECONOMIZER
OPTIONAL HEAT
TABLE 4: PARTS SUPPLIED FOR CV UNITS W/
ECONOMIZER
QTY
PART NO.
DESCRIPTION
820/Y
823/Y
QTY
PART NO.
DESCRIPTION
1
373-18689-610
373-18689-611
201/R
816/R
1
373-18641-653
822/BR
1
252/R
826/BR
257/Y
1
1
2
AB144GRA7171844
AB144WHT7171845
024-24116-000
844/GY
817/Y
845/W
1
1
373-18641-654
373-18641-655
818/Y
Isolation Relay
819/Y
307/O
318/O
828/O
842/BR
814/BR
813/BR
812/BR
811/BR
843/BR
841/BR
230/R
OPEN ALL DISCONNECTS BEFORE SERCIV-
ING THIS UNIT.
1
373-18641-658
The new thermostat requires a thermostat cable with a mini-
mum of 10 conductors that run from the sub-base to the con-
trol box. The new wire will be connected as shown in Figure
3.
1
1
1
1
1
1
1
1
1
1
1
1
1
AB008RED7171230
AB024ORN7171244
AB027GRA7171248
AB020RED5471250
AB022GRA7171800
AB007YEL7171801
AB007ORN7171802
AB009PRP7171803
AB016PRP7171809
AB012GRA7171821
AB018BRN7171836
AB126RED711L837
AB027PRP7171839
1. Locate the W7400 control module in the electric/control
panel (See Figure 1).
244/O
248/GY
250/R
2. Remove the following wires from the W7400 control
module:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
254/GY
250/PR
202/R
294/R
230/R
240/Y
244/O
246/PR
248/GY
201/R
252/Y
800/GY
801/Y
802/O
803/PR
809/PR
821/GY
836/BR
837/R
257/Y
839/PR
208/BR
307/O
318/O
3. Disconnect wire 204/BR from the TR terminals on the
W7400 control module.
NOTE: This wire will be used with the new control.
4. Disconnect thermostat wire from terminals 1-4 on the
W7400 control module.
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NOTE: Steps 6 through 8 are for optional heat only.
36. Attach wire 817/Y from CR1-7 to CR2-7.
37. Attach wire 818/Y from CR2-7 to CR3-7.
38. Attach wire 819/Y from CR3-7 to CR4-7.
39. Attach wire 204/BR to the new location on 8T-2.
40. Attach wire 828/O from RY2-A to OR-2-2.
41. Attach 318.O from RY2-A to RY1-A.
5. Disconnect wire 526/R from the 30FU location.
6. Disconnect wire 512/W and 510/GY from the W7400
control module W1 and W2 terminals.
NOTE: This wire will be used with the new controls.
7. Disconnect wire 533/GY from the W7400 G terminal.
8. Remove the W7400 control module from the control box.
42. Attach 307/0 from R1Y-A to ELM-5.
43. Disconnect wire 239/R from ACT1-24V.
NOTE: This wire will be used with the new controls.
9. Locate the new control plate in box-electric in the loca-
tion shown in Figures 2 and 4.
10. Using the four drill screws secure the back plate to the
box-electric.
44. Attach wire 239/R to the new location on OR-1-5.
45. Attach wire 837/R from OR-1-7 to ACT1-24V.
46. Attach wire 250/R from ELM-TR to MR-5.
11. Locate the packet of wires marked with “Economizer”.
12. Attach thermostat wires to new location TB12
(See Figure 3).
NOTE: IF UNIT HAS OPTIONAL HEAT CONTINUE WITH
STEP 45.
For steps 13-43 see Figures 9 and 10.
CV UNITS WITH ECONOMIZER AND OPTIONAL
HEAT
13. Attach wire 230/R from 8T-7 to TB12-R.
14. Attach wire 836/BR from TB2 to 8T-6.
See Figure 11 for Gas Heat and Figure12 for Electric Heat.
15. Attach wire 842/BR from 8T-6 to MR-B.
16. Attach wire 814/BR from MR-B to CR1-B.
17. Attach wire 813/BR from CR1-B to CR2-B.
18. Attach wire 812/BR from CR2-B to CR3-B.
19. Attach wire 811/BR from CR3-B to CR4-B.
20. Attach wire 843/BR from CR4-B to OR-B.
21. Attach wire 841/BR from OR-B to TB12-C.
22. Attach wire 800/GY from MR-A to TB12-G.
23. Attach wire 801/Y from CR1-A to TB12-Y1.
24. Attach wire 802/O from CR2-A to TB12-Y2.
25. Attach wire 803/PR from CR3-A to TB12-Y3.
26. Attach wire 821/GY from CR4-A to TB12-Y4.
27. Attach wire 809/PR from TB12-A1 to OR-A.
28. Attach wire 240/Y from CR1-5 to LOR1-1-7 .
29. Attach wire 244/O from CR2-5 to LOR1-2-9.
30. Attach wire 839/PR from CR3-5 to LOR2-1-7.
31. Attach wire 248/GY from CR4-5 to LOR2-2-9.
32. Attach wire 252/R from CLO1 to MR-7.
33. Attach wire 816/R from MR-7 to 8T-1.
47. Mount the WR1 and WR2 relays in the heat section.
48. Attach wire 526/R to the new location on 8T-7.
49. Attach wire 845/W from TB12-W1 to WR1-A.
1
50. Attach wire 844/GY from TB12-W2 to WR2-A .
51. Attach wire 510/GY to the new location at WR2-51.
52. Attach wire 823/Y from WR1-7 to WR2-71 .
53. Attach wire 826/BR from WR1-B to WR2-B1 .
54. Attach wire 822/BR from WR1-B to TB2.
55. Attach wire 512/W to the new location at WR1-5.
56. Attach wire 533/GY to the new location on TB12-G.
57. Attach wire 820/Y from CR4-7 to WR1-7.
34. Attach wire 257/Y from APS-NO to BRI-7.
35. Attach wire 201/R from 8T-1 to 30FU.
1. Only on units with 480 and 700 MBH gas heat or units
with 80kW and 180kW electric heat.
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FIGURE 9 : CONSTANT VOLUME UNIT WITH ECONOMIZER WIRING DIAGRAM
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FIGURE 10 : CONSTANT VOLUME UNIT WITH ECONOMIZER CONNECTION DIAGRAM
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FIGURE 11 : CV UNIT WITH GAS HEAT AND ECONOMIZER WIRING DIAGRAM
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FIGURE 12 : UNIT WITH ECONOMIZER AND ELECTRIC HEAT WIRING DIAGRAM
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Subject to change without notice. Printed in U.S.A.
Copyright © by YORK Unitary Products 1999. All rights reserved.
Supersedes: Nothing
530.70-N1.11Y (799)
YORK
Unitary
Products
5005
YORK
Drive
Norman
OK
73069
|