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PRODUCT DESCRIPTION
EVOJET steel boilers are triple flue pass, condensing boi-
lers for installation in a boiler room. While they are desig-
ned primarily for central heating purposes, in conjunction
with a suitable storage cylinder they can also be used to
produce domestic hot water.
All parts that come into contact with the combustion
gases are made from titanium stabilised stainless steel
to ensure maximum resistance to the corrosive action of
acid condensation.
The boiler has been designed with the combustion cham-
ber at the top and the smooth pipe tube bundle at the
bottom to optimise heat exchange and energy efficiency
and to maximise the condensing effect.
The EVOJET incorporates two return water connections 7
& 8, this facilitates multiple applications e.g. CH & DHW
and enables the optimum operating efficiency to be
achieved. The system with the lowest return water tempe-
rature should be connected to connection 8 whilst relati-
vely high return water temperature should be connected
to 7. This ensures the maximum condensing output.
The boiler has a high total water content which is diffe-
3
2
1
19
18
17
1 - Burner
2 - Flame inspection window with
pressure measurement point
3 - Door
4 - Panelling
5 - Outlet
6 - Safety device fitting
7 - Heating return (high temperature)
8 - Heating return (low temperature)
9 - Blind plug
(*) On the EVOJET 1450, the low temperature heating return (8) is located at the rear of the boiler, and
the safety fitting (6) is flanged.
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GENERAL
rentially distributed between its top and bottom sections.
This allows outgoing water to reach the set temperature
quickly while maintaining the condensing effect and the
water heating time around the tube bundle for as long as
possible.
EVOJET boilers feature lightly pressurised combustion
chambers for a smoother burner action, and high tempe-
rature resistant, stainless steel turbulators inside the tube
bundle for maximum burner efficiency.
The boiler body is thoroughly insulated with a layer of
high density glass wool.
The paint finished external panelling is also internally
insulated with a layer of high density glass wool.
The boiler's front door and the flue gas chamber can be
opened completely to facilitate the inspection, mainte-
nance and cleaning of internal parts and to speed up
servicing in general.
The front door can open in either direction and can be
opened without removing the burner. The door is factory
fitted with hinges on the left, but these can be reversed if
necessary to suit individual installations.
( * )
4
5
6
10 - Instrument bulb/probe socket
11 - Combustion chamber
12 - Flue connection
13 - Flue gas box
14 - Inspection door
15 - Condensate drain
16 - Boiler drain
17 - Turbulators
18 - Flue pipes
19 - Second flue pass
( * )
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8
9
10
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12
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