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28L – Coil Model Number
Coil Type
Z – Steam Distributing Tube (1 in. OD)
Coil Position
2
Rows
1
04
10
06
12
08
14
Circuiting
a39-4445
Fig. 6 — Steam Distributing Tube Model Number Nomenclature
28L – Drive Package Model Number
Drive Type
V – Variable Speed
K
– Constant Speed
Fan Type
1
– Forward Curve without VFD
2 – Forward Curve with VFD
Unit Size
Large Face Area (sq. ft.)
03
12
25
06
15
08
18
10
21
01
– ½ hp
02
– ¾ hp
03
– 1 hp
04
– 1 ½ hp
05
– 2 hp
06
– 3 hp
07
– 5 hp
08
– 7 ½ hp
09
– 10 hp
10
– 15 hp
11
– 20 hp
12
– 25 hp
13
– 30 hp
a46-4446
28L
Z 2
4
39L
K 2 12
10 B A 1250
Fig. 7 — Drive Package Model Number Nomenclature
06
F
D 3
086
--
--
[ Blank]
[ Blank]
066
086
096
116
136
166
Tube Size (Copper)
3 – 1 in. OD x 0.030 Wall
Fin Material
Fins Per Inch
Casing Material
C – AL
D
E
3
Safety Factor
3
– 1 Set Belt
1.5 Safety Factor
Fan Speed rpm
Position 12 is 0 if rpm is 3 digits
Motor Type
XL (Across-the-Line)
A
– Open Drip Proof
B
– Totally Enclosed, Non-Ventilated
C
– Totally Enclosed, Fan-Cooled
D – Explosion Proof
E – Encapsulated (Open Drip Proof Frame)
PW (Part-Wind)
F
– Open Drip Proof
– Totally Enclosed, Non-Ventilated
G
H
– Totally Enclosed, Fan-Cooled
– Explosion Proof
J
– Encapsulated (Open Drip Proof Frame)
K
Motor rpm
60 Hz
A
– 1200
B
– 1800
C
– 3600
50 Hz
D
– 1000
E
– 1500
F
– 3000
5
6
GALV.
– AL
9
GALV.
– AL
12
GALV.
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