Series Premier VS-VH
Page 24
LT135 Dec 2019
Figure 14: View of System after Installation of Radiant Line Tubes
Note:
System is now ready for Tailpipe installation(s).
Note:
System is now ready for Burner installation(s).
B - Tailpipe Tubes
1. Continue to install Hangers*, Tubes and Couplings as per Installation Part 1-A: Steps 1 to 4. Ensure that the
mounting height allows a downward slope of ¼” per 10 ft. (7 mm per 3 m) towards the Vacuum Pump location.
*On Tubes which will NOT have Reflectors, i.e. Tailpipe, the use of Hanger Straps instead of Reflector Hangers
is approved.
2. BEFORE installing the Tee Section between the Branch Tailpipes and the Common Tailpipe determine where
the Damper Couplings need to be installed.
3. Check which type of System is being installed, Symmetric (S) or Non-Symmetric (N) as per Figure 1 and Figure
2. Dampers are positioned to allow the Vacuum Setting at the Branch End Vent to be adjusted individually for
each Branch. Symmetric/Identical Branches require the same Vacuum setting, so One Damper coupling is
located before the Tailpipe splits into separate Branches. Non-Symmetric Branches require a separate Damper
Coupling for each Branch. For Modulating Rate Systems ensure that Motorized Damper Couplings are used.
Damper Couplings are ONLY installed in the locations on the System where the respective letter reference “S”,
OR “N” is located in Figure 15, on all other connections use normal Couplings. Dampers and Couplings are
installed using the same method. (See previous section.)
