Laars MagnaTherm MGH1600, Инструкции по установке и эксплуатации для

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MagnaTherm Boilers and Water Heaters
Page 15
Class II venting systems are further classified into
four temperature ratings as follows:
A
Up to and including 65°C / 149°F
B Up to and including 90°C / 194°F
C Up to and including 110°C / 230°F and
D Up to and including 135°C / 275°F
Flue Gas Sampling Port -
It is also the responsibility of the installer to ensure
that a flue gas sampling port is installed in the vent
system. This flue gas sampling port must be installed
near the flue connection of the unit: within 2 feet of
the flue connection. There is no flue gas sampling
port internal to the unit, so one must be installed
in the vent system external to the unit. A flue gas
sampling port available as a component of the ULC
S636 certified vent system is preferred. However, if
one is not available with the certified vent system,
Manufacturer suggests using a tee with the branch
connection sized to allow for insertion of a flue gas
analyzer probe. The branch connection must be
resealable with a cap or other means to ensure the
vent system remains sealed. (See Figure 4)
Consideration must be given to the placement and
orientation of the flue gas sampling port to ensure
that condensate is free to flow back into the unit and
not collect anywhere in the vent system - including in
the flue gas sampling port.
Exhaust Vent Terminal -
An exhaust vent terminal must be installed. If an
exhaust vent terminal is not available with the
certified vent system, the manufacturer suggests
the use of a coupler fitting from the certified vent
system into which the vent terminal screen can be
installed. Be sure to install and terminate both vent
and combustion air pipes per the instructions in this
section.
3.E Locating the Vent and Combustion
Air Terminals
3.E.1 Side Wall Vent Terminal
The appropriate side wall vent terminal must be
used. The terminal must be located in accordance
with ANSI Z223.1/NFPA 54 and applicable local
codes. In Canada, the installation must be in
accordance with CSA B149.1 or .2 and local
applicable codes.
Consider the following when installing the terminal:
1.
Figure 7 on page 17 shows the requirements
for mechanical vent terminal clearances for the
U.S. and Canada.
2. Vent terminals for condensing appliances or
appliances with condensing vents are not
permitted to terminate above a public walkway,
or over an area where condensate or vapor
could create a nuisance or hazard.
3. Locate the vent terminal so that vent gases
cannot be drawn into air conditioning system
inlets.
4. Locate the vent terminal so that vent gases
cannot enter the building through doors,
windows, gravity inlets or other openings.
Whenever possible, avoid locations under
windows or near doors.
5. Locate the vent terminal so that it cannot
be blocked by snow. The installer may
determine that a vent terminal must be
higher than the minimum shown in codes,
depending upon local conditions.
6. Locate the terminal so the vent exhaust
does not settle on building surfaces or other
nearby objects. Vent exhaust bi-products may
damage surfaces or objects.
7. If the boiler or water heater uses ducted
combustion air from an intake terminal located
on the same wall, see See Figure 6 and Figure
7 for proper spacing and orientation.
Figure 4. Test Port