A
XES SC MANUAL
IOM-58
8 of 30
June 14 R5
2.
This unit shall be electrically grounded in accordance with the latest edition of the National
Electrical Code (ANSI/NFPA 70), State and Local Codes and in accordance with the local authorities
having jurisdiction.
3.
If the unit has not been provided with an electric disconnect switch, one of adequate ampacity
shall be installed in accordance with Article 430 of the National Electrical Code (ANSI/NFPA 70).
4.
The installation of this unit shall be in accordance with the latest edition of the National Fuel Gas
Code ANSI/Z223.1/NFPA 54, State and Local Codes and in accordance with the local authorities
having jurisdiction.
5.
In accordance with local authorities having jurisdiction or NFPA 54 an accessible approved manual
shutoff valve shall be installed within 6 ft (1.8 m) of the valve train (gas manifold).
6.
The installation of this unit shall be in accordance with the latest edition of the National Standard
Plumbing Code (NSPC), State and Local Codes and in accordance with the local authorities having
jurisdiction.
7.
The installation of this unit shall be in accordance with all other National, State and Local Codes,
and in accordance with the local authorities having jurisdiction.
MINIMUM CLEARANCE FOR SERVICE AND TO COMBUSTIBLES
For Safety and Service, the following minimum clearances on the units shall be observed, in inches (mm):
Heaters must be installed to meet at least the minimum clearances shown on the rating plate. The rating
plate is located in the burner compartment. Be sure to allow enough clearance in front of the unit for
removing the burners and above for removing fan motors and blades.
MODEL
COMBUSTIBLE CLEARANCE
SERVICE CLEARANCE
TOP
FRONT
BACK
SIDE
BOTTOM
FLUE
SERVICE/
BURNER
SIDE
CONTROL
PANEL
Þ
XES
1" (25)
6" (152)
0
0
C‡
6" (152)
24"
(610)
42”
(1068)
Þ - As required by the Canadian Electrical Code or the National Electrical Code.
* - Service Clearance For Burner & Blower Access, 24" (610).
‡ - XES with suffix CF on combustible floor requires special base Part# CB(2,3,4,5,7,8, & 10).
MOUNTING
Units must be mounted level. Failure to do so can cause operational problems that can void warranty.
Failure to do so can result in injury or death, damage to the equipment and/or building and can be a cause
of poor indoor air quality. Equipment must be installed so that sufficient working clearance and
component access is provided. Consult the Submittal Record for specific unit mounting.
