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MegaTherm Commercial Pool Heating Boiler
Page 7
flamme d’une chandelle ou la fumée d’une
cigarette, d’une cigare ou d’une pipe.
6. Une fois qu’il a été déterminé, selon la méthode
indiquée ci-dessus, que chaque appareil raccordé
au systéme d’évacuation est mis à l’air libre de
façon adéquate. Remettre les portes et les
fenêtres, les ventilateurs, les registres de
cheminées et les appareils au gaz à leur position
originale.
7. Tout mauvais fonctionnement du systéme
d’évacuation commun devrait être corrigé de
façon que l’installation soit conforme au
National Fuel Gas Code, ANSI.Z223.1 et (ou)
aux codes d’installation CSA-B149.1. Si la
grosseur d’une section du système d’évacuation
doit être modifiée, le système devrait être
modifié pour respecter les valeurs minimales des
tableaux pertinents de l’appendice G du National
Fuel Gas Code, ANSI Z2231.1 et (ou) des codes
d’installation CSA-B149.1.
2.3 Installation of Outdoor Boilers
1. Locate the boiler to provide the clearances as
listed in Table 1, “Minimum Boiler Clearances.”
2. Do not place the boiler in an enclosure or wall
recess. Avoid locations where wind deflection
off structures might cause downdraft. When such
wind conditions are possible, place the heater at
least 3 feet (0.9m) from the structures.
3. Never install the boiler under any kind of roof
overhang. Do not place the boiler below or
adjacent to any doors, windows, louvers, grills,
etc., which connect in any way with an inhabited
area of a building. This includes other structures
such as garages or utility rooms (see Figure 7).
4. Although these models are CSA designed
certified for outdoor installations, such
installations are not recommended in areas where
the danger of freezing exists unless proper
precautions are taken for freeze protection.
Outdoor installations are not recommended in
areas where the danger of snow blockage exists.
WARNING
Liquefied petroleum gas is heavier than air.
Therefore, the pool heating boiler should not be
installed in pits or other locations where gas
could accumulate.
The boiler should be located a safe distance from
Propane gas storage and filling equipment. Consult
local codes and fire protection authorities for advice
on specific installation restrictions.
2.4 Gas Supply and Piping
Review the following instructions before
proceeding with the installation.
1. Verify that the boiler is fitted for the proper type
of gas by checking the rating plate. MegaTherm
boilers are normally equipped to operate below a
2000 foot (609.6m) altitude. Boilers equipped to
operate at higher altitudes have appropriate
stickers or tags attached, also printed information
on rating plate.
2. Use the figures in Table 3 to provide adequate
gas piping from the gas meter to the boiler.
3. A sediment trap (drip leg) must be provided
ahead of the gas controls (see Figure 8). A
manual gas shutoff valve must also be provided
for service convenience and safety. Check the
local codes.
Boiler Each Opening*
Size square inches
square cm
500 125
806.5
600 150
967.8
715 179
1154.9
850 213
1374.3
1010 253
1632.4
1200 300
1935.6
1430 358
2309.8
1670 418
2696.9
1825 457
2948.6
* Net Free Area.
Check with louver manufacturers for net free area of louvers.
Correct for screen resistance to the net free area if a screen is
installed. Check all local codes applicable to combustion air.
Area indicated is for one of two openings: one at floor level
and one at the ceiling, so the total net free area could be
double the figures indicated. For special conditions refer to the
latest editon of ANSI Z223.1.
Consult factory if openings do not communicate directly
through the walls with the outdoors.
Table 2. Minimum Recommended Air Supply to Boiler.
Figure 7. Incorrect Outdoor Installation.