High altitude installation, Orifice chart - altitude conversion 28 – Schwank STSV User Manual
Page 47
47
STV-JZ I&O Manual
IM090512
RD: MAY 2009
RL: 08A- BA
ORIFICE CHART - ALTITUDE CONVERSION
28.
HIGH ALTITUDE INSTALLATION
MODEL NO
FOR USE AT ALTITUDES ABOVE (FEET)
Gas Orifice Drill Size / Part#
Supplied
USA Only
USA & CANADA*
0
2000
3000
4000
5000
6000
7000
8000
STV-JZ -60 NG
25 DMS
JS-0725-DM
26 DMS
JS-0726-DM
27 DMS
JS-0727-DM
27 DMS
JS-0727-DM
28 DMS
JS-0728-DM
28 DMS
JS-0728-DM
29 DMS
JS-0729-DM
29 DMS
JS-0729-DM
STV-JZ -60 LPG
42 DMS
JS-0742-DM
42 DMS
JS-0742-DM
43 DMS
JS-0743-DM
43 DMS
JS-0743-DM
43 DMS
JS-0743-DM
44 DMS
JS-0744-DM
44 DMS
JS-0744-DM
45 DMS
JS-0745-DM
STV-JZ -80 NG
18 DMS
JS-0718-DM
19 DMS
JS-0719-DM
19 DMS
JS-0719-DM
20 DMS
JS-0720-DM
21 DMS
JS-0721-DM
22 DMS
JS-0722-DM
23 DMS
JS-0723-DM
24 DMS
JS-0724-DM
STV-JZ -80 LPG
36 DMS
JS-0736-DM
38 DMS
JS-0738-DM
39 DMS
JS-0739-DM
39 DMS
JS-0739-DM
40 DMS
JS-0740-DM
41 DMS
JS-0741-DM
42 DMS
JS-0742-DM
42 DMS
JS-0742-DM
STV-JZ -110 NG
5.2 mm
JS-0752-MM
5.1 mm
JS-0751-MM
5.0 mm
JS-0750-MM
9 DMS
JS-0709-DM
11 DMS
JS-0711-DM
0.19 i N
JS-0719-IN
13 DMS
JS-0713-DM
14 DMS
JS-0714-DM
STV-JZ -110 LPG
31 DMS
JS-0731-DM
32 DMS
JS-0732-DM
32 DMS
JS-0732-DM
32 DMS
JS-0732-DM
33 DMS
JS-0733-DM
34 DMS
JS-0734-DM
35 DMS
JS-0735-DM
36 DMS
JS-0736-DM
STV-JZ -130 NG
5.8 mm
JS-0758-MM
5.7 mm
JS-0757-MM
5.6 mm
JS-0756-MM
5.5 mm
JS-0755-MM
3 DMS
JS-0703-DM
4 DMS
JS-0704-DM
5 DMS
JS-0705-DM
0.20 in
JS-0720-IN
STV-JZ -130 LPG
29 DMS
JS-0729-DM
29 DMS
JS-0729-DM
30 DMS
JS-0730-DM
30 DMS
JS-0730-DM
30 DMS
JS-0730-DM
30 DMS
JS-0730-DM
31 DMS
JS-0731-DM
31 DMS
JS-0731-DM
STV-JZ -155 NG
0.25 in
JS-0725-IN
6.4 mm
JS-0764-MM
6.3 mm
JS-0763-MM
6.2 mm
JS-0762-MM
6.1 mm
JS-0761-MM
6.0 mm
JS-0760-MM
5.9 mm
JS-0759-MM
5.8 mm
JS-0758-MM
STV-JZ -155 LPG
0.14 in
JS-0714-IN
3.5 mm
JS-0735-MM
29 DMS
JS-0729-DM
3.4 mm
JS-0734-MM
3.3 MM
JS-0733-MM
3.3 MM
JS-0733-MM
30 dms
JS-0730-DM
0.13 in
JS-0713-IN
When this appliance is installed above the altitude stipulated below, the input must be de-rated
by 4% for each 1000 ft . If your local utility supplies gas with a de-rated heat content, no
orifice change is required in the heater . Check with your local utility regarding de-rating.
USA: The factory installed orifice for this appliance is approved for altitudes zero to
2000 feet above sea level. Above 2000 feet, refer to table below.
Canada: The factory installed orifice for this appliance is approved for altitudes zero to
4500 feet above sea level. When installed above 4500 feet, refer to the table below.