7
Operating Instructions and OwnerÊs Manual
Mr. Heater, Inc.| Forced Air Propane Construction Heater
SIZE AND CAPACITY OF PROPANE
CYLINDERS REQUIRED
The charts below show the approximate size of the cylinder
required for these heaters. To use the chart:
1. Select the lowest air temperature expected (at the bottom of the
chart).
2. Move straight up to time of operation desired (left side of chart).
3. Read the cylinder size required.
All heaters should have:
full cylinders
good air circulation
no frost on cylinders
MAXIMUM OPERA
TING TIME - HO
URS
MAXIMUM OPERA
TING TIME - HO
URS
60,000 BTU/HR (16.1 kW)
85,000 BTU/HR (33.4 kW)
AIR TEMPERATURE -
o
F (
o
C)
AIR TEMPERATURE -
o
F (
o
C)
MAXIMUM OPERA
TING TIME - HO
URS
125,000 BTU/HR (49.1 kW)
AIR TEMPERATURE -
o
F (
o
C)
PROPANE/LP VAPORATION RATE
(Per 100 lb. Propane Cylinder)
100 lb.
40 lb.
20 lb.
100# (45.4kg)
2 Cylinders
3 Cylinders
1 Cylinders
40
38
33
34
32
30
28
23
24
22
20
18
13
14
12
10
8
6
4
2
0
100# (45.4kg)
100# (45.4kg)
Pounds of
Propane in
Cylinder
Maximum continuous BTU Output
per Hour at Various Temperature
0
°
20
°
40
°
100
113,000
167,000
214,000
90
104,000
152,000
200,000
80
94,00
137,000
180,000
70
83,000
122,000
160,000
60
75,00
109,000
140,000
50
64,00
94,000
125,000
40
55,000
79,000
105,000
30
45,000
66,000
85,000
20
36,000
51,000
69,000
10
28,000
38,000
49,000
Propane Heater Cylinder Selection Chart
40(lbs) 18 kg Cylinder
20(lbs) 9 kg Cylinder
100(lbs) 45.4 kg Cylinder
40(lbs) 18 kg Cylinder
20(lbs) 9 kg Cylinder
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
