Schwank bistroSchwank 2-Stage - Manual (Page 40)

2100 / IO 100 Manual
IM110107
RD: MAY 2014
R.L. 4A
40
21. HIGH ALTITUDE INSTALLATION / DERATION
This heater not to be installed at altitude above 6,800 feet.
USA & Canada: 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.
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.
1 As per ANSI Z223.1 (NFPA 54)
MODEL
FOR USE AT ALTITUDES ABOVE (FEET)
Gas Orifice Drill Size
1
/ Part #
Supplied
0 > 2000 > 3000 > 4000 > 5000 > 6000
DO NOT INST
ALL
A
T
AL
TITUDE ABOVE
6,800 F
EET
2135 / IO-135 NG
38 DMS
JX-0738-DM
41 DMS
JX-0741-DM
42 DMS
JX-0742-DM
42 DMS
JX-0742-DM
43 DMS
JX-0743-DM
43 DMS
JX-0743-DM
2135 / IO-135 LPG
50 DMS
JX-0750-DM
52 DMS
JX-0752-DM
53 DMS
JX-0753-DM
53 DMS
JX-0753-DM
53 DMS
JX-0753-DM
53 DMS
JX-0753-DM
2150 / IO-150 NG
31 DMS
JX-0731-DM
32 DMS
JX-0732-DM
32 DMS
JX-0732-DM
32 DMS
JX-0732-DM
33 DMS
JX-0733-DM
34 DMS
JX-0734-DM
2150 / IO-150 LPG
46 DMS
JX-0746-DM
48 DMS
JX-0748-DM
48 DMS
JX-0748-DM
49 DMS
JX-0749-DM
49 DMS
JX-0749-DM
49 DMS
JX-0749-DM
USA & CANADA ORIFICE DERATION