High altitude installation – Schwank STR-JZ User Manual
Page 47
47
STR-JZ I&OManual
IM090831
RD: AUG 2009
RL: 09A - 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
STR-JZ -45 NG
29 DMS
JS-0729-DM
29 DMS
JS-0729-DM
30DMS
JS-0730-DM
30DMS
JS-0730-DM
30DMS
JS-0730-DM
30DMS
JS-0730-DM
31DMS
JS-0731-DM
31DMS
JS-0731-DM
STR-JZ -45 LPG
46 DMS
JS-0746-DM
46 DMS
JS-0746-DM
46 DMS
JS-0746-DM
48 DMS
JS-0748-DM
48 DMS
JS-0748-DM
48 DMS
JS-0748-DM
49 DMS
JS-0749-DM
49 DMS
JS-0749-DM
STR-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
STR-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
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.