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S S t t e e p p 4 4 — — U U n n i i t t I I n n s s t t a a l l l l a a t t i i o o n n
Table 6. Filter Sizes (field supplied filter rack)
NOMINAL
UNIT
CFM
4*CY5024A
800
4*CY5030A
1000
4*CY5036A
1200
4*CY5042A
1400
4*CY5048A
1600
4*CY5060A
2000
(a)
Filters must be installed in the return air system. The above square
footages are based on 300 F.P.M. face velocity. If permanent filters
are used, size per mfg. Recommendation with clear resistance of
0.05"WC.
I I m m p p o o r r t t a a n n t t : : Air filters and media wheels or plates shall
meet the test requirements in UL 900
E E l l e e c c t t r r i i c c a a l l W W i i r r i i n n g g
N N o o t t e e : : This unit is factory wired for 230V. See wiring
diagram for 208V conversion.
E E l l e e c c t t r r i i c c a a l l C C o o n n n n e e c c t t i i o o n n s s
Electrical wiring and grounding must be installed in
accordance with local codes or, in the absence of local
codes, with the National Electrical Code ANSI/NFPA 70,
Latest Revision.
E E l l e e c c t t r r i i c c a a l l P P o o w w e e r r
It is important that proper electrical power be available
for the unit. Voltage variation should remain within the
limits stamped on the unit nameplate.
D D i i s s c c o o n n n n e e c c t t S S w w i i t t c c h h
Provide an approved weatherproof disconnect within
close proximity and w w i i t t h h i i n n s s i i g g h h t t o o f f t t h h e e u u n n i i t t . . If
disconnect must be mounted to the cabinet, the
location shown in
Figure 12, p. 16
one considered.
O O v v e e r r C C u u r r r r e e n n t t P P r r o o t t e e c c t t i i o o n n
The branch circuit feeding the unit must be protected
as shown on the unit's rating plate.
P P o o w w e e r r W W i i r r i i n n g g
The power supply lines must be run in weather-tight
conduit to the disconnect and into the side of the unit
control box. Provide strain relief for all conduit with
suitable connectors.
Provide flexible conduit supports whenever vibration
transmission may cause a noise problem within the
building structure.
1. Remove the Control/Heat access panel. Pass the
power wires through the Power Entry hole in the
end of the unit. See
Figure 10, p.
2. Connect the high voltage wires to the appropriate
contactor terminals. Single phase units use a two
(2) pole contactor and three phase units use three
(3) pole contactor. Connect the ground to the
ground lug on the chassis. See
16
FILTER
FILTER
(a)
SIZE
RESISTANCE
(Sq Ft)
("W.C.)
2.67
0.08
3.33
0.08
4.00
0.08
4.67
0.08
5.33
0.08
6.67
0.08
should be the only
16.
Figure 11, p.
16.
Figure 10. Power Wiring
Run power supply lines through weather-tight
conduit and secure to unit with strain relief.
Figure 11. Power Connections
Figure 12. Mounted Disconnect Location
Contactor
Unit Ground
Lug
18-EB33D1-1D-EN
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