Pentair MT Sizes 500 Installation of Outdoor Boilers, Gas Supply and Piping

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.

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.

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.