Harsco Industrial C1500H Installation & Owner's Manual page 17

These codes and standards contain information for the venting of gas fired appliances, including, but not limited to
vent sizing, location, clearance to combustibles, and safe installation practices. The installation must comply with
both the above Federal Codes and with state, provincial and local codes.
knowledgeable venting systems personnel and in accordance with vent system manufacturer's installation
instructions. Installing a boiler or vent system using improper installation methods or materials can result in serious
injury or death due to fire or asphyxiation.
is to be installed in a conventional or Direct Vent configuration. In the US, provisions for combustion and ventilation
air must be in accordance with NFPA 54/ANSI Z223.1, National Fuel Gas Code, latest edition, or applicable
provisions of the local building codes. In Canada, combustion and ventilation air openings shall comply with
CAN/CSA B-149.1 Natural Gas and Propane Installation Code.
manufacturer's instructions.
Failure to use a proper vent system (types and materials), as described in this manual will void the boiler warranty
and may result in rapid deterioration of the venting system, creating a health or life safety hazard.
Faulty vent installation can allow toxic fumes to be released into living areas. This may cause property damage,
serious bodily injury or death.
Table of Required Stainless Steel Vent Adapters and Category II Motorized Dampers
Boiler Nominal
Size vent Size
C300 4"
C450 5"
C750 6"
C900 8"
C1050 8"
C1500 10"
C2000 10"
C2500 10"
C3000 10"
C4000 10"
NOTICE! This table is for information only. Combustion air dampers and vent adapters are listed for use of design
and may or may not be specific to your application.
The optional, but required for Category II venting, normally-closed motorized combustion air damper operates on 120
VAC and features an end limit switch wired into the boiler's external interlock circuit. Upon a call for heat, the boiler's
Design and installation of venting systems should be done only by qualified and
Before connecting a boiler to a venting system, it must be determined whether the boiler
For correct installation of vent system, read all of these instructions and refer to vent
Stainless Vent
Vent Adapter adapter
size
4"
2600000593
5"
2600000594
8"x6"
2620000181
8"
2620000366
8"
2620000366
10"x8"
2630000226
10"x8"
2630000225
10"
2640000133
10"
2640000133
10"
2640000133
Boiler air Combustion
inlet for air Normally-
combustion Closed
air Motorized
Damper
6"
1004906943
6"
1004906943
6"
1004906943
6"
1004906944
6"
1004906945
10"
1004906945
10"
1004906945
12"
1004906946
12"
1004906946
12"
1004906989
17
®
MACH Gas Fired Boiler
A
6"
6"
6" size
8" as
10" needed
10" size
10" as
12" need
12"
14"