Millennium Enterprises Y14 User Manual
530.70-N1.11Y
2
Unitary Products Group
DESCRIPTION
The installation of this kit (2RT04701A) replaces the W7400
module and will obsolete the T7400 thermostat. A new ther-
mostat will be required to operate the unit.
module and will obsolete the T7400 thermostat. A new ther-
mostat will be required to operate the unit.
This kit contains all necessary electrical components, sheet-
metal 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 Econo-
mizer, Optional Gas Heat, and Optional Electric Heat. Fig-
ures 1 and 2 illustrate the location of the Millennium controls
and the location of the W7400 in the control section. The
metal 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 Econo-
mizer, Optional Gas Heat, and Optional Electric Heat. Fig-
ures 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 N
O
.
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
CV w/ECON
Wiring Diagram
1
035-16636-000
CV w/ECON
Connection Diagram
1
035-16635-000
CV W/O ECON Wiring Diagram
1
035-16637-000
CV W/O ECON Connection
Diagram
1
035-16165-000
CV Electric Heat Wiring
Diagram
1
035-16148-000
CV Gas Heat Wiring Diagram
1
373-22695-000
CV With Economizer Wire
Pkg.
1
1.
See Table 4 for complete listing of wires in the CV with
Economizer Package.
Economizer Package.
1
373-22694-000
CV W/O Economizer Wire
Pkg.
2
2.
See Table 2 for complete listing of wires in the CV with-
out Economizer Package
out Economizer Package
1
373-22696-000
CV With Heat Wire
3
3.
See Tables 3 and 5 for complete listing of wires in the
CV unit with heat package
CV unit with heat package
TABLE 2: PARTS SUPPLIED FOR CV UNITS W/O
ECONOMIZER
1
QTY
PART NO.
DESCRIPTION
1
373-18641-653
201/R
816/R
252/R
1
373-18641-654
257/Y
817/Y
818/Y
819/Y
1
373-18641-659
842/BR
814/BR
813/BR
812/BR
834/BR
835/BR
1
AB008RED7171230
230/R
1
AB024YEL5471240
240/Y
1
AB024ORN7171244
244/O
1
AB027GRA7171248
248/GY
1
AB022GRA7171800
800/GY
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.