Aerco Esteem 399, Installation And Maintenance Instructions Manual

Page: 54 / 136

54
12.7 - Stainless
steel vent piping
materials
WARNING!!!
Use only the
materials, vent systems, and
terminations listed in Figures
12-7 and 12-8. DO NOT mix
vent systems of different types
or manufacturers, unless
listed in this manual. Failure to
comply could result in severe
personal injury, death, or
substantial property damage.
WARNING!!!
This
appliance requires a special
venting system. The field
provided vent heater adapter
(Figure 12-11, item “B”) must
be connected to the heater
following Section 12.7.2.
Failure to follow this warning
could result in fire, personal
injury, or death.
WARNING!!!
Improper
installation of Stainless steel
systems may result in injury or
death.
WARNING!!!
Use only
water-based lubricants on joints.
Never use hydrocarbons-based
lubricants because they would
destroy gaskets. Failure to
follow this warning could result
in excessive levels of carbon
monoxide, which can result
in severe personal injury or
death!
12 - INSTALLATION - CATEGORY IV: Vent and combustion air
12.7.1 - Stainless steel air
intake connection
Combustion Air Intake
connection (see Figure 12-11
Item “P”).
This connection is used to provide
combustion air directly to the heater
from outdoors. Combustion air piping
must be supported per guidelines
listed in the National Mechanical
Code, Section 305, Table 305.4 or as
local codes dictate.
To connect a stainless steel pipe to
the air intake connection proceed as
follows while referring to Figure 12-11:
1. Dry fit adapter “R” and heater
connection “P” to ensure proper fit
up before assembling the adapter
to the heater. The adapter “R”
should go completely into the heater
connection to ensure proper sealing
after sealant is applied.
a. Handle adapters “R” and heater
adapter “P” carefully to prevent
contamination of surfaces.
b. Apply a liberal even coat of
VITON-BASED RTV high
temperature silicone (or
equivalent) to the adapter “R”
approximately 2” beyond the
socket depth.
c. While the VITON-BASED RTV
high temperature silicone is
still wet, insert the adapter “R”
into the heaterconnection “P”.
NOTICE! If voids are present,
sufficient VITON-BASED RTV
was not applied and joint could be
defective.
d. Tight the clamp to mechanically
secure the joint
2. Insert air intake pipe “N”, into
adapter “R”, following instruction of
stainless steel pipe manufacturer.
NOTICE!
Installation must comply
with local requirements and with the
National Fuel Gas Code, ANSI Z223.1
for U.S. installations or CSA B149.1 for
Canadian installations.
NOTICE!
For installation in Canada,
vent pipe system must be certified to
ULC-S636 (see Figure 12-7).
NOTICE!
All vent pipes connections
must be secured following manufacturer
instruction, properly supported, and the
exhaust must be pitched a minimum of
a 1/4 inch per foot back to the heater (to
allow drainage of condensate).
NOTICE! Installation of a stainless
steel vent system should adhere to
the stainless steel vent manufacturer’s
installation instructions supplied with
the vent system.
NOTICE! The installer must use a
specific vent starter adapter at the
flue collar connection, supplied by the
vent manufacturer to adapt to its vent
system. See Figure 12-8 for approved
vent adapters.