Gas Train Components Supplied For Standard Ul Burner Requirements - Power Flame C Series Installation & Operation Manual

C10
Rev.304
Table 4
Equivalent Length of Fittings in Feet
Pipe Size (IPS)
Std. Tee through Side
Std. E11
o
45 E11
Plug Cock
Table 5
Gas Train Components Supplied for Standard U.L. Burner Requirements
See Gas Flow Schematics this page, Figure 8 and 9 for additional information
Fuel Air Control Modes of Operation
Main Gas Cock
Main Gas Pressure Regulator
High and Low Gas Pressure Switches
Automatic Main Gas Valve
Automatic Main Gas Valve with Proof of Closure
Main Auxilary Gas Valve
Leak Test Gas Cock
Pilot Cock, Pressure Regulator & Solenoid Valve
Modulating Butterfly Valve
Side Tee Orifice Assembly
Main and/or Pilot Gas Pressure Gauge
X - Supplied as standard
1. Supplied as standard on inputs of 2,500,000 BTU/hr. and
above. Available as an option below 2,500,000 BTU/hr. inputs.
2. Supplied as standard on inputs of 5,000,000 BTU/hr. and
above. Available as an option below 5,000,000 BTU/hr. inputs.
Figure 8
Typical Schematic Gas Piping for Type C Burner, On-Off, Low-High-Off and Low-High-Low System
Field Piped
Gas Supply
Dirt Leg with Cap
Extend to Floor
Field Piped
Figure 9
Typical Schematic Gas Piping for Type C Burner, Modulating System
Field Piped
Gas Supply
Dirt Leg with Cap
Extend to Floor
Field Piped
*
On some burner models at inputs below 2500 MBH a combination pressure regulator/automatic gas valve may be used in place of the separate main gas
pressure regulator and main gas shutoff valve shown in Figure 8 and 9 above. For specifics on your burner refer to the gas piping diagram supplied with the
burner.
1 1.25
5.5 7.5
2.7 3.7
1.2 1.6
3.0 4.0
O - Optional N/A - Not available
Pilot
Shutoff
Cock
Vent to Atmosphere as Permitted by Code
Low Gas
Pressure
Switch
Main Gas
Shutoff N.O.
Cock Vent Valve
Main Gas Auxiliary
Pressure Gas Valve
Regulator*
Pilot
Shutoff
Cock
Vent to Atmosphere as Permitted by Code
Low Gas
Pressure
Switch
Main Gas
N.O.
Shutoff
Vent Valve
Cock
Main Gas Auxiliary
Pressure Gas Valve
Regulator*
1.5 2 2.5 3
9.0 12.0 14.0 17.0
4.3 5.5 6.5 8.0
2.0 2.5 3.0 3.7
5.5 7.5 9.0 12.0
On/Off
XU
XU*
OU
XU*
O
O
XU
X
N/A
X
O
(U) - Unmounted
* Certain burners will have a combination pressure regulator/
diaphragm gas valve in lieu of a separate regulator and valve.
Canadian electrical and fuel codes require systems that
vary from the above. Consult the factory for specific details.
Pilot
Solenoid
Valve
Pilot Gas
Pressure
Regulator
High Gas
Pressure
Switch
Leakage
Test Cock
Main
Gas Valve*
(With Pressure Tap; May
be in Nipple or Test Cock)
Pilot
Solenoid
Valve
Pilot Gas
Pressure
Regulator
High Gas
Pressure
Switch
Leakage
Test Cock
Main
Gas Valve* Butterfly Valve
(With Pressure Tap; May (Operated by
be in Nipple or Test Cock) Modulating Motor)
4
22.0
12.0
5.0
16.0
Low/High/Off Low/High/Low
XU XU
XU XU
X 1 U X 1 U
X X
1 1
X X
X 2 X 2
X X
X X
N/A N/A
X X
O O
May be omitted on U.L. listed
/ "
1 units not exceeding 5,000 MBH
8
Pressure
when proof of closure system is
Tap
furnished.
Gas Pilot
Denotes not required below
Ignitor
2,500 MBH.
Proof of closure feature
* *
required above 5,000 MBH.
N.O. vent valve required above
Gas Burner
12,500 MBH.
Manifold
All On-Off units completely field
* *
Orifice Tee
piped.
1 / " Pressure Tap
4
May be omitted on U.L. listed
/ " units not exceeding 5,000 MBH
1
8
when proof of closure system is
Pressure
Tap furnished.
Gas Pilot
Denotes not required below
Ignitor
2,500 MBH.
Proof of closure feature
required above 5,000 MBH.
N.O. vent valve required above
12,500 MBH.
/ " Pressure Tap
1
4
Gas Burner
Manifold
Modulating
XU
XU
X 1 U
XU
1
X
X 2
XU
X
X
N/A
O