Specifications

530 25. N1
Refer to the fO]k)~lJlg dCinstructions t’or zdd]tiumrl
cent rol wiring inf{ll matlon.
Flrest~t
- Form
6
F“orm 530.1 1-N 10.1
Low Ambient Kit
—
F 5
F 5
Form 530,1 I -N1O.4
DUCT CONNECTIONS
The supply and return air duct can be connected to the sup-
port fingles which are part of the roof curb package. This
allows the installation of the duct work and roof curb before
instaibng the urril, All duct connections are contained wlth-
m the roof curb. Refer to Fig. 1.3for duct connection di-
mensions for the bottom side-by-side arrangement.
Refer to Form 55.70-N 1 for suggestedmeans of instalhng
and insulating ducts.
When a unit IS used with a ceding plenum return air system,
sound may be t runsmitted from the unit thru the ceiling to
the conditioned space. For such apphcatluns, there must be
a sound absorption chamber installed cm the umt return alr
relet as shown 111Figure 14. [n this
w sound generated by
the unit is absorbed-in the chamber and not transmitted to
the conditioned space. The chamber may be constructed {f
fiberglass duct or metal duct hned with sound absurptwn
material. Ceiling return grilles should be Iucated a minimum
of 12 feet from the end uf tbe suund chamber. I n every in-
stallation a return tilr duct must be installed to the umt.
Fl LTERS
All filters being used in these units are 2“ thick. Tbruwaway
filters or 55% efficient bag type 1ilters are ava]lable JSl~ctory —
options. Cleanable filters or 30’7{efficient throwaway 1ilters
are avadable as accessories.The cleanable filters have an alum-
mum mesh media that may be cleaned m hot water ur steam,
reol[ed and reused indefinitely. The 30’X and 55’2 efficient
filters are available to meet speclficatiorrs for Improved air
f]lt ratiun. Refer to Table 4 fur filter siie~ mId quantities,
TABLE 4 –
FI R
Unit
I 2“Throwaway \
Model I 2“Cleanable
I 55%
I
2“
I
2
X 20X 25
I
(4) 12X 20 X 24
(4) 12
X 24 X 24
DSC360
I
( 6) 2
X 20X 25
I
(4) 12
X 20X 24
I 9) 2 x 20 x 20 (4) 12
X 24 X 24
1
,
DSC480
( 6) 2
X 20X 25
(5) 12X 20X 24
(12) 2 x
X 24 X 24
, I
1 1
-
‘L.”‘m ~
——
3
-“;R‘“ “
,1
1, ‘–
I
II
--------] ,“
u
;
‘1 ;
T A D
R C
C
AC
I I
II I
L
1 4
d , ~ ,,,4
L
~
3
.
,.. !,,.! ,.. , ,,.. ,>,>6+
w,,,) e.. h r.olc. rbacce, ’or, “.,,
b nro,.rl ” . b “ !
R H E V
, o
,h. curt> ,. “r...”!
,.O,,, ”,, ,,0!,) ,kak (., !“,. !..
,
, ”e.i . . . . .
FIG. 13 – DUCT CONNECTIONS
L
6 - ——
1 f 3
1 l
.,
3 2
1 1 7
([>SC3U03
1201 2 IDS( 480! -
R V
-’
R A S
A C
t
C
o
P
S
i
C
~
~
— M
-
t
R
R A G
A
R
A
FIG. 14 –
SOUND Absorption CHAMBER
L
CES