Munchkin HIGH EFFICIENCY HEATER with the "925" Controller Operating Instructions Manual page 19

**IMPORTANT NOTE: All vent pipes must be
glued, properly supported and the exhaust must
be pitched a minimum of a ¼" per foot back to
the heater (to allow drainage of condensate).
Figure 4-1
DIAGRAMS FOR SIDEWALL VENTING
**IMPORTANT NOTE: All vent pipes must be glued, prop-
erly supported and the exhaust must be pitched a mini-
mum of a ¼" per foot back to the heater (to allow drainage
of condensate).
Figure 4-2
VENTING
19