Camus Hydronics DRW1000, Инструкция по установке и обслуживанию

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PART 7 COMPONENTS
7.1 HOT SURFACE IGNITER (GLOW BAR)
The silicon carbide igniter is inserted directly through the fan
flange and held in place by two screws. A hold down bracket as
well as sealing gasket above and below the igniter assures a
good seal. Care must be taken when removing and/or installing
the igniter since the silicon carbide element is brittle. Always
remove the igniter prior to removing the fan assembly for
inspection of the burner and heat exchanger. A properly
prepared igniter will have a bead of silicone sealing the end
mounting bracket to the ceramic shaft.
Figure 29: Hot Surface Igniter
During trial for ignition a properly operating igniter will generate
a minimum 3.2+/-0.2A which is the current required for reliable
ignition. It is recommended that the hot surface igniter be
replaced every 4,000 hours of appliance operation to maintain
peak ignition efficiency.
7.2 FLAME SENSOR
The flame sensor is inserted directly through the fan flange and
is screwed into the fan flange. Care must be taken, when
installing the flame sensor, to align it perpendicular to the fan
flange and parallel to the burner tube and not to over tighten.
Always remove the flame sensor prior to removing the fan
assembly for inspection of the burner and heat exchanger.
Figure 30: Flame Sensor
The ignition module relies on the flame sensor to provide a flame
rectification signal. Oxide deposits, improper placement or
damaged ceramic insulator will result in insufficient signal
leading to ignition module lock out. For proper operation
minimum 0.8 Vdc must be fed back to the module. Oxide deposit
on the sensor rod must be removed with steel-wool. Do not use
sand-paper since this will contaminate the surface.
7.3 COMBUSTION AIR FAN
DR300 – 1000
Uses a modulating air fan to provide combustible air/gas mix to
the burner and push the products of combustion through the
heat exchanger and venting system. The fan assembly consists
of a sealed housing and fan wheel constructed from spark
resistant material. The fan is operated by a fully enclosed 120
VAC, Single-Phase EC/DC electric motor. The fan housing and
motor assembly is fully sealed and SHOULD NOT be field
serviced. The power draw of the motor is proportional to the
modulated gas input rate of the appliance.
DR 1200 - 5000
Figure 31: Fan, Burner, Hot Surface Igniter and Flame
Sensor Arrangement (DR 1200 – 5000)
Uses a sealed air fan to provide combustible air/gas mix to the
burner and push the products of combustion through the heat
exchanger and venting system. The fan assembly consists of a
sealed housing and fan wheel constructed from spark resistant
cast aluminum. The fan is operated by a fully enclosed 230 VAC,
3 Phase electric motor. The fan housing and motor assembly is
fully sealed and SHOULD NOT be field serviced. The power
draw of the motor is proportional to the modulated gas input rate
of the appliance.
7.4 INNER JACKET
The inner jacket assembly is constructed from a special
corrosion resistant stainless steel. All screws, bolts, nuts and
fasteners used for assembly of the inner jacket are also stainless
steel.
DO NOT mix stainless steel and standard plated fasteners
when disassembling and reassembling the inner jacket
sheet metal components. Standard plated fasteners will be
damaged by the flue product condensate when used on the
inner jacket assemblies.
7.5 OUTER JACKET
The outer jacket assembly is constructed from mirror finish
stainless steel. This ensures a long life for the jacket assembly,
with full integrity
7.6 VENTING TRANSITION
All appliances are shipped with a round stainless steel adapter.
Depending on the appliance category an increaser will be
required for the proper vent configuration. Please refer to Table
3 dimensions and specifications.
When installing Category II or IV appliances care must be taken
to properly seal all joints and provide slope for drainage of
condensate away from the boiler.