____________________________________________________________________________
L.S. Bilodeau inc.
281 Route 108 Est, Saint-Éphrem-de-Beauce, Quebec G0M 1R0
Tel.: 418 484-
2013 ▪ Fax: 418 484-2014 ▪
www.lsbilodeau.com
LS150
2015-09-18
PURGEUR D’AIR AUTOMATIQUE
Ce dispositif permet aussi de purger l’air des canalisations, de prévenir la cavitation à l’admission de la pompe et de prévenir la corrosion, tout
en
minimisant l’apport d’eau neuve au système. L’installation d’un purgeur d’air automatique prévient l’accumulation d’air dans la boucle de
chauffage et, pour bien fonctionner, il doit être installé au point le plus élevé possible dans la boucle de chauffage
afin d’éliminer
l’accumulation d’air durant la mise en service et maintenir, par la suite, l’étanchéité du système.
RÉGULATEUR DE PRESSION ET SOUPAPE DE SURPRESSION INTÉGRÉS
L’installation d’un module comprenant un régulateur de pression et une soupape de surpression doit être effectuée conformément aux codes,
ordonnances et règlements locaux. Ce module maintient automatiquement le volume d’eau et une pression optimale de 124,1 kPa (18psi )
dans la boucle de chauffage. Le module doit aussi êt
re pourvu d’un clapet antiretour.
ZONAGE PAR POMPES DE CIRCULATION
L’emplacement recommandé pour chaque pompe de zone est du côté alimentation de la boucle de chauffage, le vase de dilatation étant situé entre la
chaudière et chaque pompe. Un clapet antiretour doit être installé dans chaque zone, préférablement à la sortie de chaque pompe, pour prévenir un reflux
d’eau chaude vers les zones sans demandes de chauffage.
ZONAGE PAR VANNES MOTORISÉES
L’emplacement recommandé pour chaque vanne de zone motorisée est du côté alimentation de la boucle de chauffage, le réservoir de dilatation étant situé
entre la chaudière et chaque vanne. Cependant, l’installation de vannes motorisées sur les conduits de retour de chaque zone est aussi acceptable si la pompe
de circulation se trouve en aval des vannes sur le conduit maître de retour à la chaudière. On recommande l’utilisation de vannes motorisées à faible chute de
pression pour le zonage.
POMPE DE CIRCULATION PRINCIPALE
L’emplacement recommandé pour la pompe de circulation principale est du côté alimentation de la boucle de chauffage, le réservoir de dilatation étant situé
entre la chaudière et la pompe.
PLUMBING CONNECTIONS AND PIPING
The
Bilovax LS150
boiler has been designed so that it’s total restriction to water flowing through it does not exceed the equivalent of 3 m (10′)
of 3,8 cm (1-½
″) pipe approved for continuous operation at 100
o
C (212
o
F). The return and supply connections of the boiler are of 3,8 cm (1-
½
″) diameter and easily adaptable to the network of pipes of the building’s heating system. The supply connection to the heating loop is
situated on top of the boiler and the return connection is situated in the lower part of the boiler, both are NPT male threaded pipes of 3,8 cm
(1-½
″) diameter. It is strongly recommended to install unions on the supply and return pipes to facilitate the removal of the boiler, if necessary,
during maintenance of the boiler or of the heating loop. In the case of steel-copper connections, use dielectric unions so as to protect the
boiler and the loop piping from galvanic action. To easily isolate the heating loop and not have to empty it if major service must be done on the
boiler, it is recommended to install a by-pass loop with 1/4 turn ball valves. Only use new and clean pipes to connect the heating loop to the
boiler, the codes and local regulations stipulate exactly what type of pipes to use. It is preferable that the piping not go through an unheated
space, on the other hand if this cannot be avoided, it is most important to thermally insulate the piping and to install heating cables to eliminate
any and all risks of freezing of the pipes. Even where the piping of the heating loop goes through a heated space, it is a good practice to
insulate the pipes to minimize heat losses. It is recommended to install thermometers on the supply as well as on the return pipes. Plug all
unused openings on the boiler
PRINCIPAL AND PROTECTION COMPONENTS:
The external circuit of the
Bilovax LS150
boiler must be provided with a safety relief valve sensitive to water pressure (furnished), an
expansion tank, a circulating pump, a combined pressure regulator and pressure relief valve, a combined manometer-thermometer and a
drain cock. Also allow for a dump zone in case of overheating of the boiler.
The diverting or dump zone is more than 20,000 BTU/h or 6
kW /h.
All these controls and protection components are required for the safe operation of the
Bilovax LS150
wood-fired boiler.
BACKFLOW PREVENTER
If the heating system uses only one circulating pump, a backflow preventer must be installed to prevent gravity flow and the inefficient heat
losses associated with it during periods of no heating demand. Also install backflow preventers on each zone when using circulating pumps
for zoning purposes.
WATER PRESSURE SAFETY RELIEF VALVE
A water pressure safety relief valve is furnished with the boiler and is an essential safety component, not a control component. The release
point of the safety relief valve is set to 207kPa (30psi) which is in accordance with the ASME Boiler and Pressure Vessel Code to limit the
maximum service pressure of the boiler. The capacity of the safety relief valve in BTU/hour is equal to or greater than the heating capacity of
the boiler as inscribed on the nameplate. During the installation, connect the outlet of the safety relief valve to a smooth unthreaded copper
drain pipe of the same diameter as the outlet of the valve aimed at the floor and whose end will be situated at the most 15 cm (6") from a
suitable floor drain and kept distant from any electrical appliance or component. Make sure that the drain pipe empties completely when the
safety relief valve operates and see that it is protected from freezing. This drain pipe must not be connected to any other tap or valve, it is for
the exclusive use of the safety relief valve. The installation of water pressure safety relief valves is also governed by local authorities.
MAINTENANCE OF INTERNAL PRESSURE BY AN EXPANSION TANK
The membrane expansion tank with pre-
set pressure helps to maintain a constant pressure inside the heating loop in order that all it’s
components can function efficiently and safely in spite of all the variations in temperature and volume occurring inside of it. The expansion
tank must be able to absorb the increase in volume of water when the heating loop water rises to maximum temperature whilst m aintaining, at
the same time, the optimum design pressure. It must also maintain the optimum design pressure even when the water in the heating loop
cools down. The connection point of the expansion tank must be carefully chosen so that the closing of zone or check valves does not isolate
it from the boiler or any active part of the heating loop. The expansion tank must be situated on the inlet to the circulating pump as close as
possible to the boiler, either upstream or downstream from it. The expansion tank must work conjointly with the combined pressure regulator
and pressure relief valve to always maintain an adequate volume of water and an optimum pressure of 124,1kPa (18psi) in the heating loop.
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