32
TopGas Cascade
60 - 720 kW
4215256-00 - 11/16
Using PTFE tape (or other suitable thread sealing media), wrap both
sides of the 1” nipple (2043076) before screwing into the header.
Ensure sealing media used is suitable for natural gas.
Fit the nipple into the header and tighten ensuring a good seal is
made.
Fit the 1” gas isolation valve (2067892) to the nipple. On the outlet
of the gas isolation valve, fit the TracPipe connector (2067994). Be-
fore fitting apply PTFE tape (or other suitable thread sealing media).
Ensure sealing media used is suitable for natural gas. Screw into
the top of the valve and tighten ensuring a good seal is made. Note,
ensure that the valve is in the correct orientation, when the valve is
open the handle must point upwards.
Attach the 3/4” to 1” concentric reducer (2042714) to the gas con-
nection on the boiler and then fit the TracPipe connector (2067994).
Before fitting apply PTFE tape (or other suitable thread sealing me-
dia). Ensure sealing media used is suitable for natural gas.
Screw
into both sides of the boss and tighten ensuring a good seal is made.
TopGas Cascade Assembly
5.3. Step 3: Pipe the gas from the header to the boilers