MORTEX
PRODUCTS
INC
501
TERMINAL
RD
FORT
WORTH,
TX
76106
Page
13
Table 3: High Altitude Gas Orifice Size Chart
ELEVATION
PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE
SEA LEVEL
72AG-144
0.144
27
72AG-157
0.157
22
72AG-166
0.166
19
72AG-173
0.173
17
2,000
72AG-140
0.140
28
72AG-154
0.154
23
72AG-161
0.161
20
72AG-169
0.169
18
3,000
72AG-140
0.140
28
72AG-152
0.152
24
72AG-161
0.161
20
72AG-166
0.166
19
4,000
72AG-136
0.136
29
72AG-149
0.149
25
72AG-159
0.159
21
72AG-166
0.166
19
5,000
72AG-136
0.136
29
72AG-147
0.147
26
72AG-157
0.157
22
72AG-161
0.161
20
6,000
72AG-136
0.136
29
72AG-144
0.144
27
72AG-154
0.154
23
72AG-159
0.159
21
7,000
72AG-128
0.128
30
72AG-144
0.144
27
72AG-149
0.149
25
72AG-157
0.157
22
8,000
72AG-128
0.128
30
72AG-140
0.140
28
72AG-147
0.147
26
72AG-154
0.154
23
9,000
72AG-128
0.128
30
72AG-136
0.136
29
72AG-144
0.144
27
72AG-152
0.152
24
10,000
72AG-120
0.120
31
72AG-136
0.136
29
72AG-140
0.140
28
72AG-147
0.147
26
ELEVATION
PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE PART NO. ORIFICE DIA. DRILL SIZE
SEA LEVEL
72AG-086
0.086
44
72AG-093
0.093
42
72AG-096
0.096
41
72AG-104
0.104
37
2,000
72AG-082
0.082
45
72AG-093
0.093
42
72AG-093
0.093
42
72AG-101
0.010
38
3,000
72AG-082
0.082
45
72AG-089
0.089
43
72AG-093
0.093
42
72AG-099
0.099
39
4,000
72AG-082
0.082
45
72AG-089
0.089
43
72AG-093
0.093
42
72AG-099
0.099
39
5,000
72AG-081
0.081
46
72AG-089
0.089
43
72AG-089
0.089
43
72AG-098
0.098
40
6,000
72AG-078
0.078
47
72AG-086
0.086
44
72AG-089
0.089
43
72AG-096
0.096
41
7,000
72AG-078
0.078
47
72AG-086
0.086
44
72AG-086
0.086
44
72AG-093
0.093
42
8,000
72AG-076
0.076
48
72AG-082
0.082
45
72AG-086
0.086
44
72AG-093
0.093
42
9,000
72AG-076
0.076
48
72AG-081
0.081
46
72AG-082
0.082
45
72AG-089
0.089
43
10,000
72AG-073
0.073
49
72AG-078
0.078
47
72AG-081
0.082
46
72AG-089
0.089
43
60,00 BTU FURNACE
70,00 BTU FURNACE
77,00 BTU FURNACE
90,00 BTU FURNACE
NATURAL GAS
PROPANE GAS
60,00 BTU FURNACE
70,00 BTU FURNACE
77,00 BTU FURNACE
90,00 BTU FURNACE
PROPANE AND HIGH ALTITUDE KITS
It is very important to choose the correct kit and/or gas orifices for the altitude where the appliance will be operating. It is also
very important to choose the correct kit and/or gas orifices for the type of gas the appliance will be burning. Only use Natural
Gas Orifices in appliances operating on Natural Gas. Only use Propane Gas for appliances that have been converted to use HD-5
Propane (LP) Gas. Do not use this furnace with butane or butane air gases.
Incorrect gas orifices or a furnace that has been improperly converted will create an extremely dangerous condition resulting in
premature heat exchanger failure, excessive sooting,
DANGEROUSLY HIGH LEVELS OF CARBON MONOXIDE
resulting in
personal injury, property damage, a fire hazard and/or loss of life.
High altitude and HD-5 propane (LP) conversions are required for the appliance to maintain proper operation. An authorized
dealer or qualified service contractor must make all gas conversions. In Canada, a certified conversion station or qualified
service agency, using factory specified and/or approved parts must perform the conversion. The installer must take every
precaution to insure the appliance has been properly converted by using the correct gas orifices and placing the gas valve
regulator in the proper position for the gas being used.
DO NOT attempt to drill out any orifices to obtain the proper size. The orifice MUST be drilled with precision equipment
ONLY.
Hand drilling orifices WILL CAUSE misalignment of the burner flame causing the flame to impinge on the heat
exchanger resulting in premature heat exchanger failure, dangerously high levels of carbon monoxide, personal injury,
property damage and/or death.
