Millennium Enterprises STYLE C, STYLE B, Y14, STYLE A, Y13 User Manual
INSTALLATION
MILLENNIUM™ ROOFTOP
INSTRUCTION
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
CONTROLS UPGRADE FROM STYLE A TO
STYLE C
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
DESCRIPTION
The installation of this kit (2RT04701A) replaces the W7400
module and will obsolete the T7400 thermostat. A new thermostat will be required to operate the unit.
This kit contains all necessary electrical components, sheetmetal parts, and wires to replace the W7400 module and the
T7400 thermostats used in all Constant Volume 30-40 Ton
Millennium Style A units. The kit contains the wiring needed
for all options including CV W/ Economizer, CV W/O Economizer, Optional Gas Heat, and Optional Electric Heat. Figures 1 and 2 illustrate the location of the Millennium controls
and the location of the W7400 in the control section. The
new low-voltage electric box will be as shown in Figure 4.
TABLE 1: PARTS SUPPLIED FOR CONTROL
CHANGE
QTY PART NO. DESCRIPTION
1 073-21599-000 Backplate Bracket
1 025-16100-000 Terminal Block, 10 Pole
1 025-32699-000 Transformer, 24V to 24V
5 024-24116-000 Isolation Relay
4 021-15512-000 #10 Sheet metal Screws
1 035-16634-000
1 035-16636-000
CV w/ECON
Wiring Diagram
CV w/ECON
Connection Diagram
TABLE 2: PARTS SUPPLIED FOR CV UNITS W/O
ECONOMIZER
QTY PART NO. DESCRIPTION
1 373-18641-653
1 373-18641-654
1 373-18641-659
1 AB008RED7171230 230/R
1 AB024YEL5471240 240/Y
1 AB024ORN7171244 244/O
1 AB027GRA7171248 248/GY
1 AB022GRA7171800 800/GY
1
201/R
816/R
252/R
257/Y
817/Y
818/Y
819/Y
842/BR
814/BR
813/BR
812/BR
834/BR
835/BR
1 035-16635-000 CV W/O ECON Wiring Diagram
1 035-16637-000
1 035-16165-000
1 035-16148-000 CV Gas Heat Wiring Diagram
1 373-22695-000
1 373-22694-000
1 373-22696-000
1.
See Table 4 for complete listing of wires in the CV with
Economizer Package.
2.
See T abl e 2 for complete listing of wires in the CV without Economizer Package
3.
See Tables 3 and 5 for complete listing of wires in the
CV unit with heat package
CV W/O ECON Connection
CV With Economizer Wire
CV W/O Economizer Wire
Diagram
CV Electric Heat Wiring
Diagram
1
Pkg.
2
Pkg.
CV With Heat Wire
3
1 AB007YEL7171801 801/Y
1 AB007ORN7171802 802/O
1 AB009PRP7171803 803/PR
1 AB012GRA7171821 821/GY
1 AB018BRN7171836 836/BR
1 AB027PRP7171839 839/PR
1.
See Table 3 for units with optional heat.
2 Unitary Products Group
530.70-N1.11Y
TABLE 3: PARTS SUPPLIED FOR CV UNITS WITH
OPTIONAL HEAT
QTY PART NO. DESCRIPTION
1 373-18689-610
1 373-18689-611
1 AB144GRA7171844 844/GY
1 AB144WHT7171845 845/W
2 024-24116-000 Isolation Relay
820/Y
823/Y
822/BR
826/BR
FIGURE 1: POWER & CONTROL WIRING
LOCATION
FIGURE 3 : TYPICAL THERMOSTAT WIRING
OPEN ALL DISCONNECTS BEFORE SERVICING THIS UNIT.
The new thermostat requires a thermostat cable with a minimum of 10 conductors that run from the sub-base to the control box. The new wire will be connected as shown in Figure
3.
1. Locate the W7400 control module in the box-electric
(Figures 1 and 2).
FIGURE 2 : EXISTING CONTROL PANEL COMPO-
NET LOCATION
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.
NOTE:
This wire will be used with the new controls.
NOTE: STEPS 5 THROUGH 7 ARE FOR OPTIONAL HEAT
ONLY.
Unitary Products Group 3
530.70-N1.11Y
FIGURE 4 : NEW LOW VOLTAGE CONTROL COMPONETS
5. Disconnect wire 526/R from the 30FU location.
NOTE:
6. Disconnect wire 533 /GY from the W7400 c ontrol modul e
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-
10. Using the four drill screws secure the back plate to the
11. Locate the packet of wires marked with “No Econo-
12. Attach thermostat wires to new location TB12
NOTE:
respectively.
13. Attach wire 230/R from 8T-7 to TB12-R .
This wire will be used with the new controls.
G terminal.
tion shown in Figure 4.
box-electric.
mizer”.
(See Figure 3).
For the following steps (13-34) see Figures 5, and 6
14. Attach wire 836/BR from TB2 to 8T-6.
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 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.
4 Unitary Products Group
530.70-N1.11Y
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 HEA T PLEAS E 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:
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.
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 WR2-7
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 WR2-5
This wire will be used with the new controls.
1
.
1
.
1
.
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.
Unitary Products Group 5
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