Section 2 — Installation
2-10 Part No. 750-263
Clean combustion air is required for optimum efficiency and boiler
operation. Dust and airborne contaminants will adversely effect
burner performance. If conditions dictate, a serviceable filter must
be placed in the intake piping to eliminate airborne contamination
to the burner. An optional air filter is available from Cleaver-Brooks.
Additionally, if a direct vent combustion air intake vent is used the
intake should be directed to eliminate rain or snow from entering the
intake piping. The boiler must be installed so that the gas ignition
system components are protected from water (dripping, spraying,
etc.) during appliance operation and service.
E. GAS CONNECTIONS
1. General
The ClearFire Series CFC gas fired condensing boilers are full
modulating input units that require appropriate gas supply pressure
and volume for proper operation. The gas requirements specified in
this section must be satisfied to ensure efficient and stable
combustion. Installation must follow these guidelines and those of
any local authorities having installation jurisdiction.
2. Gas Train Components
CFC boilers are equipped with a gas train that meets the
requirements of CSA and ASME CSD-1, and also the requirements
of FM and GE-GAP (formerly IRI). The gas train and its components
have been designed and tested to operate for the highest
combustion efficiency for the CFC units.
3. Gas Pressure Requirements
For proper and safe operation, each CFC Series boiler requires a
stable gas pressure input. See Table 2-1 for pressure requirements.
Figure 2-9 CFC Rear View
Air Inlet
Extension
Location
Flue Gas Vent
Connection
Alt. Flue
Gas
Connection
Gas
Connection
Hot
Water
Out
Return
Water
Inlet
Figure 2-10 Gas Regulator and
Shutoff Valve(typical)
Gas Pressure Regulator
Shutoff Valve
To Next Page
Loading...
Need help?
General
