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Figure 3 – Typical Condensing System
Condensate from the MicoFlame® Grande must
be treated before being discharged to drain. pH
level of the condensate is to be checked regularly
and the neutralizing medium is to be replaced as
required. A neutralizing cartridge is available from
the factory. The condensing MicoFlame® Grande
must be vented using only special venting type
AL29-4C stainless steel or equivalent, please
follow instructions detailed below.
When supplied with the CHRM, the MicoFlame®
Grande is 95% efficient (category II or IV
appliance) which requires the use of a special
venting system fabricated from AL29-4C or
equivalent material. Only venting components
listed by a nationally recognized testing agency
may be used.
This
appliance
may
conventional,
sidewall
Conventional vented appliances operate with
negative pressure in the vent pipe and require a
special vent adapter to increase the flue outlet
diameter.
Sidewall
appliances operate with positive pressure in the
vent pipe and may be directly connected to the
flue outlet without the use of an increaser.
Consult the vent pipe manufacturer's instructions
for minimum clearances to combustible material
for
vent
components.
instructions,
the
combustible material is six inches.
be
installed
or
vertical
venting.
and
vertically
vented
In
the
absence
minimum
clearance
Consult vent pipe manufacturer's instructions
for proper method of sealing vent pipe sections
and fittings. In the absence of instructions,
make sure that pipe and fittings are clean by
swabbing with alcohol. Use Dow Corning 736
or 732 RTV, Polybar # 500 RTV or Sil-bond
4500 or 6500 to seal vent pipe. Do not use
other
sealants
expressly permitted by vent manufacturer's
instructions.
Consult vent pipe manufacturer's instructions
for vent system assembly. Follow vent pipe
manufacturer's instructions if those instructions
differ from this section.
Common Venting
Multiple appliances may be vented into a
conventional chimney. The chimney must be
lined with AL29-4C or equivalent and a single
acting barometric damper must be provided for
each appliance. Vent diameters are to be
increased by one size over the recommended
size downstream of the barometric damper.
A qualified professional using a proven vent-
sizing program with input of accurate operating
parameters must properly calculate sizing of
the venting system. In applications where flue
gas temperatures are lower than can support a
Category II with conventional negative draft, it
will be determined at the venting design stage
that a positive pressure will be developed in the
vent. It will then be necessary to either provide
separate
pressurize the boiler room, or to provide an
extractor at the chimney outlet in order to
with
maintain a negative draft in the chimney and
allow common venting.
The chimney must be protected from down
drafts, rain and debris by using a listed chimney
cap. Approval of the installation will be at the
discretion of authorities having jurisdiction.
The following vent materials are suitable for
MicoFlame® Non-Condensing Category II & IV
installations:
of
1.
AL29-4Cor equivalent, Single or
to
Double Wall.
2.
"BH" type.
8
or
adhesives
vents
as
for
Category
except
as
IV,
to
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