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15
The table below provides specific data for
each heater model as -
2.10 Air distribution system
All materials used within the construction of
the delivery and return air ducts must not
represent a fire hazard and should be made
from thermally inert materials. The selection
of materials must take account of the
environment into which the heater and its air
delivery system is expected to work, it must
also take account of the stresses and
loadings placed upon it during its normal
working life. Where interjoist spaces are
used to route ducting these must be lined
with fire resistant insulation material.
In installations where forced recirculation is
a feature, a full and unobstructed return air
path to the heater(s) must be provided, with
return air grilles connected by ducting
directly to the return air inlet on the heater.
The limit for recirculation should not be
greater than 85% re-circulated air to 15%
fresh air.
Where the heater is installed within a
compartment or plant room the return air
and discharge air arrangement must be
such that the air circulation fan does not
interfere with the operation of the flue.
The return air intake and warm air outlet
should therefore be fully ducted to and from
the heater, respectively, within the
compartment or plant room.
If the inlet air is ducted to the outside, then
the lowest edge of the inlet air duct must be
at least 500mm above the outside floor or
ground level, it must also be fitted with an
access point(s) to allow for cleaning and
servicing to occur.
The openings in the structure of the plant
room, through which the ductwork passes
must be of fire resistant material and
constructed to prevent the likelihood of any
fire from spreading.
In ducted applications the ductwork must be
designed so as to give a static pressure
within the limits stated in section 8 of this
manual. It should be noted that if the static
pressure is too high, nuisance shut-down
will occur when the heater goes out on the
overheat limit thermostat, if the static
pressure is too low, then damage can be
caused to the fan motor.
Warm air outlets on ducted applications
must be such that they cannot be closed or
become blocked, which again would lead to
an increase in static pressure and nuisance
shut-down. The outlets must not be sited so
that warm air can be discharged onto
combustible materials, if necessary, guard
rails should be used to ensure that effected
areas are kept clear.
Return air intakes must not be located so
that potentially harmful or hazardous
contaminated air can be drawn into the
system.
MODEL
Mechanical
Ventilation Rate for
Plant Room or
Enclosure
35
164
40
202
60
262
75
331
85
400
120
533
135
601
180
799
205
954
235
1066
275
1290
350
1592
375
1753
30
132
M
3
/h
Summary of Contents for HT2000
Page 34: ...34 Wiring Diagram 20 45 605 60 85 ON OFF Riello Burner Integral CP4 230 50 1ph...
Page 35: ...35 Wiring Diagram 20 45 606 120 135 ON OFF Riello Burner Integral CP4 230 50 1ph...
Page 36: ...36 Wiring Diagram 20 45 607 60 275 ON OFF Riello Burner Integral CP4 415 50 3ph...
Page 37: ...37 Wiring Diagram 20 45 620 30 40 ON OFF Riello Burner Remote CP4 230 50 1ph...
Page 38: ...38 Wiring Diagram 20 45 621 60 85 ON OFF Riello Burner Remote CP4 230 50 1ph...
Page 39: ...39 Wiring Diagram 20 45 622 120 135 ON OFF Riello Burner Remote CP4 230 50 1ph...
Page 40: ...40 Wiring Diagram 20 45 623 60 275 ON OFF Riello Burner Remote CP4 415 50 3ph...
Page 41: ...41 Wiring Diagram 20 45 612 30 40 ON OFF Riello Burner No Controls 230 50 1ph...
Page 42: ...42 Wiring Diagram 20 45 613 60 85 ON OFF Riello Burner No Controls 230 50 1ph...
Page 43: ...43 Wiring Diagram 20 45 614 120 135 ON OFF Riello Burner No Controls 230 50 1ph...
Page 44: ...44 Wiring Diagram 20 45 615 60 275 ON OFF Riello Burner No Controls 415 50 3ph...
Page 45: ...45 Wiring Diagram 20 45 292 HI LOW option Riello Burner CP4 Control...
Page 51: ...51 9 0 Parts Lists...
Page 55: ...55 Notes...