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HVAC
NATURAL GAS UNIT HEATERS
NATURAL GAS UNIT HEATERS
115,000 to 400,000 BTUH
Features:
DIMENSIONS
Model No.
A
B
C
D
E
F
G
Clearances
Top
Sides
Rear
Bottom Flue
100 / 115 / 145
31
c
32
x
20
x
10½ 19
z
11
d
3¼ 6
6
18
0
6
175 / 200
31
c
32
x
23
8
10½ 22
z
13¼ 3¼ 6
6
18
0
6
230 / 250 / 300
31
c
32
x
41
8
3
n
38
m
17½ 3¼ 6
6
18
0
6
345
31
c
32
x
41
8
3
n
38
m
17½ 3¼ 6
6
18
0
6
400
31
c
32
x
41
8
3
n
38
m
22
8
3¼ 6
6
18
0
6
Locke
Code
Model
No.
Total
Input,
BTUH*
Total
Output
BTUH
Air
Vol.
CFM
Air Throw
at 8 Ft.
Mounting
Height, Ft
Max. Mtng
Height, Ft.
(To Bottom
of unit)
Fan Diam,
Inch/ No.
of Fans/
Blades
Ship
Wt.
LB.
Net
Wt.
LB.
H.P.
AMPS
@115V/
1PH/
80HZ
RPM
Motor
Type
****
Flue
Size,
Inch
**
Gas
Connect.
Inches
***
Optional
LPG Kit
No.
L6201
SEP-100 100,000 80,500 1900 60
16 16/1/4 140 125 1/8 2.1 1075 PSC 4
½
Locke# L6705
L6203
SEP-115 115,000 92,000 1900 60
16 16/1/4 140 125 1/8 2.1 1075 PSC 4
½
LB-698-45G
Locke#-L6206
L6204
SEP-145 145,000 116,000 1900 60
20 16/1/5 150 130 1/8 2.1 1075 PSC 4
½
L6205
SEP-175 172,500 138,000 2200 65
20 16/1/5 165 145 1/8 2.1 1075 PSC 5
½
L6243
SEP-200 195,000 156,000 2200 65
20 16/1/5 165 145 1/8 2.1 1075 PSC 5
½
L6207
SEP-230 230,000 184,000 4400 80
30 16/2/5 270 255
8
(2) 4.2 1075 PSC 5
¾
LB-698-45H
Locke#-L6210
L6208
SEP-300 287,500 230,000 4400 80
30 16/2/5 285 270
8
(2) 4.2 1075 PSC 5
¾
L6209
SEP-345 345,000 276,000 4400 80
30 16/2/5 300 285
8
(2) 4.2 1075 PSC 6
¾
L6249
SEP-400 390,000 312,000 4400 80
30 16/2/5 305 285
8
(2) 4.2 1075 PSC 6
¾
LB-698-45S
Locke#-L6251
• 78% thermal efficiency & 76% seasonal
efficiency using natural gas or LPG in all
models.
• Certified by AGA and CGA and is listed by
the California Energy Code.
• All heaters have a sealed flue collector &
a power exhaust system which enables
conventional vertical venting, or horizontal
venting up to 40 feet.
• The tubular heat exchangers are
constructed of aluminized steel for superior
resistance to corrosion/oxidation. The
compact design minimizes the space
needed for the heater cabinet.
• The inshot lightweight steel burners
are maintenance free & never require
adjustment or cleaning. The entire burner
assembly is removable as 1 piece for ease
of service.
• Direct spark ignition provides 100% shut
off for safety & eliminates the need for pilot
lights.
• Cabinet is constructed of 18-22 gauge cold
rolled steel and has a baked on powder
paint finish for superior resistance to
corrosive elements.