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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
H H i i g g h h A A l l t t i i t t u u d d e e I I n n s s t t a a l l l l a a t t i i o o n n
Unit nameplate ratings are based on equipment
operation from sea level to 2000 feet elevation above
Unit Input
115k
2001
High stage
112100
Low stage
84000
90k
High stage
87700
Low stage
65700
70k
High stage
68200
Low stage
51100
60k
High stage
58500
Low stage
43800
Inputs shown are with factory orifices @ 3.5"WC (High Fire) 1.8"WC (Low Fire). Natural Gas heating value of 950 btu/cuft.
For LP installations. Models that require #49 orifices, for altitudes from 7000 - 8000' orifices must be changed to #50.
Air Filter Installation
The packaged unit requires an air filter. The unit does
not come with a factory installed filter rack in it,
however, two filter frame accessories are offered that
will allow the installation of a filter within the unit,
BAYFLTR101 & BAYFLTR201. Otherwise a field
supplied filter rack must be installed by the installer in
the return duct work.
Affix the filter label supplied with the unit adjacent to
the filter area. Refer to
Table 12, p. 20
filter size.
Table 12. Determine Filter Size
Nominal
Unit
CFM
YC~4024A
800
YC~4030A
1000
YC~4036A
1200
YC~4042A
1400
YC~4048A
1600
YC~4060A
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.
20
High Altitude Derate Chart Nat.
3000
4000
104100
96200
78100
72100
81500
75200
61100
56400
63300
58500
47600
43900
54300
50100
40700
37600
to determine
Filter
(a)
Filter 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
sea level. No orifice changes required for high altitude
installation, please refer to below chart for rating
information.
Altitude (In Feet)
5000
6000
88100
86900
66100
65100
69000
68000
51700
51000
53600
52900
40200
39600
46000
45300
34500
34000
Electrical Wiring
I I N N S S T T A A L L L L A A T T I I O O N N W W A A R R N N I I N N G G — — H H I I G G H H
V V O O L L T T A A G G E E M M O O V V I I N N G G P P A A R R T T S S ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w t t h h i i s s W W a a r r n n i i n n g g c c o o u u l l d d r r e e s s u u l l t t i i n n
p p r r o o p p e e r r t t y y d d a a m m a a g g e e , , s s e e v v e e r r e e p p e e r r s s o o n n a a l l i i n n j j u u r r y y , , o o r r
d d e e a a t t h h . .
B B o o d d i i l l y y i i n n j j u u r r y y c c a a n n r r e e s s u u l l t t f f r r o o m m h h i i g g h h v v o o l l t t a a g g e e
e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s , , f f a a s s t t m m o o v v i i n n g g f f a a n n s s , , a a n n d d
c c o o m m b b u u s s t t i i b b l l e e g g a a s s . . F F o o r r p p r r o o t t e e c c t t i i o o n n f f r r o o m m t t h h e e s s e e
i i n n h h e e r r e e n n t t h h a a z z a a r r d d s s d d u u r r i i n n g g i i n n s s t t a a l l l l a a t t i i o o n n a a n n d d s s e e r r v v i i c c i i n n g g , ,
t t h h e e m m a a i i n n g g a a s s v v a a l l v v e e m m u u s s t t b b e e t t u u r r n n e e d d o o f f f f a a n n d d t t h h e e
e e l l e e c c t t r r i i c c a a l l s s u u p p p p l l y y m m u u s s t t b b e e d d i i s s c c o o n n n n e e c c t t e e d d . . I I f f
o o p p e e r r a a t t i i n n g g c c h h e e c c k k s s m m u u s s t t b b e e p p e e r r f f o o r r m m e e d d w w i i t t h h t t h h e e u u n n i i t t
o o p p e e r r a a t t i i n n g g , , i i t t i i s s t t h h e e t t e e c c h h n n i i c c i i a a n n ' ' s s r r e e s s p p o o n n s s i i b b i i l l i i t t y y t t o o
r r e e c c o o g g n n i i z z e e t t h h e e s s e e h h a a z z a a r r d d s s a a n n d d p p r r o o c c e e e e d d s s a a f f e e l l y y . .
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.
N N o o t t e e : : For branch circuit wiring (main power supply to
unit disconnect), determine wire size for the
length of run using the circuit ampacity found on
the unit nameplate and the N.E.C. For more than
3 conductors in a raceway or cable, see the N.E.C.
for derating the ampacity of each conductor.
7000
8000
85600
85100
64200
63800
67000
66500
50200
49900
52100
51800
39100
38800
44700
44300
33400
33200
W W A A R R N N I I N N G G
18-EB27D1-13C-EN
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