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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.
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
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.
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
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
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.