34
Venting and Combustion Air Installation
The vent run from the high point to the vent
termination should be as minimal in length as
possible to reduce the amount of potential con-
densate at the vent termination.
The vent system must maintain the 1/4 inch per
foot pitch to the high point and from the high
point to the vent termination.
Vent Appliance Adapters
-
The PERFORMANCE requires the use of
an appliance adapter as approved by the one
of vent manufacturers listed on page 29.
Failure to use an approved vent appli-
ance adapter may create improper vent
connection and potential flue gas leak-
age. Do not mix the manufacturer appli-
ance adapter with other manufacturers’
vent components, the vent system could
fail or improperly seal, causing leakage
of flue products into the building.
Vent Condensate Drain
A vent condensate drain and drain tube should
be installed near the appliance to prevent any
potential condensate from entering the flue
ways on the unit. See Figs. 19 through 22B
pages 35 & 36.
Failure to provide a vent condensate
drain close to the appliance could allow
acidic flue gas condensate to enter into
the appliance flue ways causing prema-
ture failure of the appliance.
Condensate Drain Tube
To prevent flue gases from entering into the
building it is important the drain tube is fash-
ioned into a “pigtail” trap as shown in Figs. 19
through 22B pages 35 & 36.
The drain tube must be filled with water to pre-
vent flue gases from emitting into the building
prior to operating the appliance.
Periodically inspect the water level in the
condensate drain tube. If low, add water
as needed to maintain trap level.
If water in drain tube evaporates rapidly due to
ambient conditions, propylene glycol may be
added or substituted to reduce evaporation.
Pipe the condensate drain tube to a suitable
place of drainage or to a condensate pump or
sump. Consult local authorities regarding dis-
posal of flue gas condensate into public waste
water system.
Determining Piping Lengths
Once the venting method and location for the
vent termination has been determined the
installer must select the vent components
required for the system.
The maximum combined equivalent lengths for
venting and combustion air inlet are as follows:
-
Delta PERFORMANCE - 200 feet (100
feet each)
The maximum equivalent length is the
total length of the venting and the com-
bustion air inlet combined. This includes
termination fittings.
NOTICE
NOTICE
WARNING
WARNING
