MODEL |
SINGLE STAGE BTU/HR INPUT |
TWO STAGE |
BTU/HR HIGH INPUT |
BTU/HR LOW INPUT |
LTU 40 |
40,000 |
40,000 |
25,000 |
LTU 50 |
50,000 |
50,000 |
31,500 |
LTU 60 |
60,000 |
60,000 |
38,000 |
LTU 75 |
75,000 |
75,000 |
50,000 |
LTU 80 |
80,000 |
80,000 |
50,000 |
LTU 90 |
90,000 |
90,000 |
57,000 |
LTU 100 |
100,000 |
100,000 |
63,000 |
LTU 110 |
110,000 |
110,000 |
69,500 |
LTU 120 |
120,000 |
120,000 |
76,000 |
LTU 125 |
125,000 |
125,000 |
80,000 |
LTU 130 |
130,000 |
130,000 |
82,000 |
LTU 140 |
140,000 |
140,000 |
88,500 |
LTU 150 |
150,000 |
150,000 |
95,000 |
LTU 160 |
160,000 |
160,000 |
100,000 |
LTU 175 |
175,000 |
175,000 |
110,000 |
LTU 180 |
180,000 |
180,000 |
114,000 |
LTU 200 |
200,000 |
200,000 |
125,000 |
LTU 225 |
225,000 |
225,000 |
N/A |
LTU 250 |
250,000 |
250,000 |
N/A |
* Indicate model number based on Btu/hr input (e.g. 100,000Btu/hr), emitter length (e.g. 30 ft.) . Control suffix (e.g. Natural Gas single stage input ) . The unit selection would be LTU100-30-N5.
| Control Suffix |
Type of Gas |
Control Option Description |
| N5/ L5 |
Natural / Propane |
Single Stage Gas Valve- Single Stage Input |
| N7 / L7 |
Natural / Propane |
Two Stage Gas Valve- Modulating Input – High/Low Fire |

MODEL |
INPUT |
MINIMUM MOUNTING HEIGHT |
TOTAL TUBE LENGTH |
OVERALL DIMENSION "L" |
SHIPPING WEIGHT Lbs.** |
BTU/HR |
LTU40-30 |
40,000 |
10' |
30' |
16' 10" |
138 |
LTU50-30 |
50,000 |
11' |
30' |
16' 10" |
138 |
LTU60-30 |
60,000 |
12' |
30' |
16' 10" |
138 |
LTU75-30 |
75,000 |
13' |
30' |
16' 10" |
138 |
LTU80-30 |
80,000 |
13' |
30' |
17' 6-1/2" |
191 |
LTU90-30 |
90,000 |
13' |
30' |
17' 6-1/2" |
191 |
LTU100-30 |
100,000 |
13' |
30' |
17' 6-1/2" |
191 |
LTU110-30 |
110,000 |
14' |
30' |
17' 6-1/2" |
191 |
LTU120-30 |
120,000 |
14' |
30' |
17' 6-1/2" |
191 |
LTU125-30 |
125,000 |
14' |
30' |
17' 6-1/2" |
191 |
LTU130-30 |
130,000 |
14' |
30' |
17' 6-1/2" |
191 |
LTU125-40 |
125,000 |
14' |
40' |
22' 6-1/2" |
246 |
LTU130-40 |
130,000 |
14' |
40' |
22' 6-1/2" |
246 |
LTU140-40 |
140,000 |
15' |
40' |
22' 6-1/2" |
246 |
LTU150-40 |
150,000 |
15' |
40' |
22' 6-1/2" |
246 |
LTU160-40 |
160,000 |
15' |
40' |
22' 6-1/2" |
246 |
LTU175-40 |
175,000 |
16' |
40' |
22' 6-1/2" |
246 |
LTU180-50 |
180,000 |
18' |
50' |
27' 7" |
284 |
LTU200-50 |
200,000 |
18' |
50' |
27' 7" |
284 |
LTU225-50 |
225,000 |
20' |
50' |
27' 7" |
293 |
LTU250-50 |
250,000 |
20' |
50' |
27' 7" |
293 |
** Hanging weight is 80% of shipping weight |
|
|
| GAS
AND ELECTRICAL SUPPLY REQUIREMENTS |
| LTU40--175 |
GAS
TYPE |
BURNER
PRESSURE |
SUPPLY
PRESSURE |
VOLTAGE
|
AMPS
|
IGNITION
TYPE |
Minimum
|
Maximum
|
NATURAL
|
3.5"
W.C. |
5"
W.C. |
14"
W.C. |
120
VAC
60 HZ |
2.6
|
DIRECT
SPARK |
PROPANE
|
10"
W.C. |
11"
W.C. |
14"
W.C. |
| LTU150--250 |
NATURAL
|
3.5"
W.C. |
7"
W.C. |
14"
W.C. |
120
VAC
60 HZ |
2.6
|
DIRECT
SPARK |
PROPANE
|
10"
W.C. |
12"
W.C. |
14"
W.C. |
MINIMUM
CLEARANCE TO COMBUSTIBLES |
| 
|
| MODEL
|
SIDE
|
CEILING*
|
BELOW
|
ENDS
|
mounted
at 45° angle |
| FRONT
|
REAR
|
|
LTU40,
LTU50
|
24"
|
6"
|
40"
|
30"
|
48"
|
12"
|
|
LTU60,
LTU75
|
24"
|
6"
|
60"
|
30"
|
48"
|
12"
|
|
LTU80,
LTU90
|
52"
|
6"
|
84"
|
30"
|
52"
|
12"
|
|
LTU100
|
66"
|
6"
|
88"
|
40"
|
66"
|
20"
|
|
LTU110,
LTU120, LTU125, LTU130
|
66"
|
6"
|
101"
|
40"
|
66"
|
20"
|
|
LTU140,
LTU150, LTU160, LTU175
|
84"
|
6" |
106"
|
48"
|
84"
|
24"
|
|
LTU180,
LTU200, LTU225, LTU250
|
84" |
18" |
132"** |
48" |
84" |
24" |
NOTE: The
clearances specified above must be maintained to combustibles and
other materials that may be damaged by temperatures 90ºF above
ambient temperature. Clearances to combustibles are posted on the
reflector near the control end of the heater. In locations used
for storage of combustible materials where they may be stacked
below the heater, NFPA 54 requires that the installer must post
signs that will "specify the maximum permissible stacking
height to maintain the required clearances from the heater to combustibles".
*
When used indirect vented, the clearance to the ceiling from the top
of the exhaust hood must be 12" for LTU40--LTU75, 18" for
LTU80--LTU175, and 24" for LTU180--250.
**72"
clearance 20 downstream from the Control Box
NOTE: Consult the factory if reduced clearances are required.
|