ESC Installation, Operating, and Service Instructions

11
4. CONNECT VENTING (continued)
(3) Install vent piping.
(4) When conguring the ESC for Power
Vent (indoor combustion air) install a 45°
vent elbow, pointing downward.
(5) Install vent terminal and seal around all
exterior openings.
(6) The nal installation should appear as in
Figure 4-c.
4. For vertical venting, follow instructions in
Appendix B2  Direct Venting, Special
Instructions for Stainless Steel Venting
Vertical Installations, Specically,
(1) Install re stops and wall thimbles.
(2) Install vent piping and vert terminal.
(3) Install condensate line.
(4) Install roof ashing and roof supports.
(5) The nal installation should appear as in
Figure B-7 in Appendix B-2.
5. Do not use cellular core PVC (ASTM
F891), cellular core CPVC, or Radel
®
(polyphenolsulfone).
6. Do not cover non-metallic vent pipe and
ttings with thermal insulation.
Note: Non-metallic vent cannot be used with
this boiler.
4-c