High Altitude Deration - Schwank bistroSchwank Series Installation & Owner's Manual

21. HIGH ALTITUDE INSTALLATION / DERATION
This heater not to be installed at altitude above 6,800 feet.
USA: The factory installed orifice for this appliance is approved for altitudes zero to 2000 feet above sea level.
When installed above 2000 feet, refer to information 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 information below.
When this appliance is installed above the standard altitude stipulated the input must be de-rated by 4% for each
1000 ft above sea level. The orifice must be changed according to the chart below - confirm the correct model.
Check with your local utility regarding the gas supply and the de-rating of this appliance.
MODEL
2135 / IO-135 NG
2135 / IO-135 LPG
2150 / IO-150 NG
2150 / IO-150 LPG
2152 / IO-152 NG
1
Per ANSI Z223.1 [NFPA 54]
MODEL
2135 / IO-135 NG
2135 / IO-135 LPG
2150 / IO-150 NG
2150 / IO-150 LPG
2152 / IO-152 NG
USA: FOR USE AT ALTITUDES ABOVE [FEET]
Supplied
0 > 2000
38 DMS 41 DMS
JX-0738-DM JX-0741-DM
50 DMS 52 DMS
JX-0750-DM JX-0752-DM
31 DMS 32 DMS
JX-0731-DM JX-0732-DM
46 DMS 48 DMS
JX-0746-DM JX-0748-DM
31 DMS 32 DMS
JX-0731-DM JX-0732-DM
CANADA: FOR USE AT ALTITUDES ABOVE [FEET]
Supplied
0 > 4500
38 DMS 42 DMS
JX-0738-DM JX-0742-DM
50 DMS 53 DMS
JX-0750-DM JX-0753-DM
31 DMS 32 DMS
JX-0731-DM JX-0732-DM
46 DMS 49 DMS
JX-0746-DM JX-0749-DM
31 DMS 32 DMS
JX-0731-DM JX-0732-DM
Gas Orifice Drill Size
USA ORIFICE DERATION
> 3000 > 4000
42 DMS 42 DMS
JX-0742-DM JX-0742-DM
53 DMS 53 DMS
JX-0753-DM JX-0753-DM
32 DMS 32 DMS
JX-0732-DM JX-0732-DM
48 DMS 49 DMS
JX-0748-DM JX-0749-DM
32 DMS 32 DMS
JX-0732-DM JX-0732-DM
1
Gas Orifice Drill Size / Part #
CANADA ORIFICE DERATION
> 5000 > 6000
43 DMS 43 DMS
JX-0743-DM JX-0743-DM
53 DMS 53 DMS
JX-0753-DM JX-0753-DM
33 DMS 34 DMS
JX-0733-DM JX-0734-DM
49 DMS 49 DMS
JX-0749-DM JX-0749-DM
33 DMS 34 DMS
JX-0733-DM JX-0734-DM
42
1
/ Part #
> 5000 > 6000
43 DMS 43 DMS
JX-0743-DM JX-0743-DM
53 DMS 53 DMS
JX-0753-DM JX-0753-DM
33 DMS 34 DMS
JX-0733-DM JX-0734-DM
49 DMS 49 DMS
JX-0749-DM JX-0749-DM
33 DMS 34 DMS
JX-0733-DM JX-0734-DM
2100 / IO-100 Manual
IM110107
RD: AUG 2021
R.L. 11A