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vides adequate air for combustion and ventilation,
and therefore no additional make up air is required.
5. For a 'confined' space or an 'unconfined' space in a
building with unusually tight construction, an addition-
al source of make up air is required. Please consult an
HVAC professional to determine the best way to supply
make up air for this type of installation.
Important: Furnace room must never be in a negative
pressure condition. Negative pressure could result in
smoke in the room.
low Water temperature protection
It Is tHE rEspOnsIBIlIty OF tHE InstallEr tO
prOVIdE lOW WatEr tEmpEraturE prOtECtIOn
In tHE dEsIGn OF tHE HEat dIstrIButIOn systEm
The Empyre Elite XT furnace is no different than an oil
boiler or gas boiler in that condensation of the products
of combustion will occur if flue gases come in contact with
a surface that is less than 140°F (60°C). With an oil or
gas boiler the rate of fuel and consistency of the fuel is
automatic, so if the temperature of the water in the boiler
falls below the desired setting the burner comes on auto-
matically raising the water temperature. The Empyre Elite
XT requires an automatic protection from low water tem-
perature because of the manual fuel feed.
Condensation (water) in the boiler tubes will cause corro-
sion and premature failure. The Empyre System Optimiz-
er, as installed in Figures 1-3, page 14, gives the Empyre
Elite XT excellent protection from low water temperatures.
Empyre system Optimizer
The Empyre System Optimizer (ESO) is designed with a low
loss header which includes a Danfoss VTC valve, complete
with a pump flange and bypass piping. The Danfoss
VTC tempering valve was selected for its simplicity and
reliability.
The Empyre System Optimizer is mandatory on all Empyre
Elite XT installations in order to maintain the warranty.
How the EsO and Valve Operates
The Empyre System Optimizer provides a constant
circulation of water through the boiler and the Danfoss VTC
tempering valve. Water is drawn off the low loss header by
the building piping system and returned to that same loop
where it mixes with the water in the low loss header. Before
it reenters the boiler, it passes through the tempering valve.
If the water entering the valve is too cold, the valve starts
to slow the water returning and mixes it with water coming
directly from the boiler. If the return water temperature
drops below 140°F (60°C) the valve will stop this cold
water from entering the boiler. The valve will open again
when the boiler water rises in temperature.
EmpyrE ElItE Xt InstallatIOn and OpEratIOn manual
Electrical Hookup
Have a junction box with a receptacle installed in the
back of the furnace by a qualified electrician to ensure
all national and municipal codes are met. This is to be
installed inside the back of the furnace on the bottom
pan surface or up on either side.
note: The junction box and receptacle installation is to
be a dedicated receptacle to run the furnace and the
circulating pumps.
Water line Hookup
See Figures 1 to 3.
Important: Pump must always be in lowest part of
the water line system from the Empyre Elite XT to the
building. Pump may be at the furnace or in the building.
note: The spacing between the tees must be no more
than 4 times the diameter of the plumbing line size.
The Empyre System Optimizer may be installed in the
vertical position.
ImpOrtant :
the installation drawings in this manual are
conceptual drawings only. this furnace is to
be installed by a professional plumbing and
heating company and qualified electrician.
Ensure your installation is suitable for
your application, will serve your needs and
conforms to all local, provinicial/state and
national codes.
the pro-Fab Industries warranty covers the
Empyre Elite Xt furnace only and does not
include anything outside of the Empyre
Elite Xt furnace. pro-Fab Industries takes
nO responsibility for installations. dO nOt
modify this unit in any way. Any modification
will void the warranty.
InsTallaTIon
13
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