Rendamax R2000 Series, Техническая документация инструкция

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DOC2012/2000en
48
Ignition generator
Release the two fixings securing the top of the gas train cover at the front of the boiler and remove
carefully in upward direction.
Disconnect all of the plugs from the front electrical panel and remove the cover of the electrical panel by
releasing two screws at each end. Disconnect the ignition generator electrical connection from within
the control panel and release the ignition electrode lead from the generator. Replace the generator by
releasing its screw fitting and reconnect the electrical connections in accordance with the separate
supplied wiring diagrams.
Control panel components
Release the two fixing screws at the top of the right hand upper side panel and remove the panel
by lifting upwards and off its lower locating pegs.
Refer to fig. 19 for the locations of the various controls. Replace components by removing electrical
connections and screw fixings. It is necessary to drain the boiler when replacing the water flow switch
as it incorporates water connections.
The temperature sensing phials for both the control thermostat and the overheat control are contained
within a thermostat pocket in the flow header immediately beneath the control panel. The phials are
released by first removing the securing clip.
The control thermostat is fixed to the front right hand side panel of the boiler and its fixing screws
can be accessed via the control panel.
Re-connect any electrical connections in accordance with the separate supplied wiring diagrams.
Replacing fin tubes
Header and manifold removal
Release water pressure and drain the unit.
Disconnect the system water-pipes at the manifold flanges.
Disconnect all pressure and temperature sensors from the flow/return header and electrically
disconnect the flow-switch.
Remove the heat exchanger tensioning bars. Carefully remove the water manifold and flow/return
header (2P and 3P).
Fin tube replacement
Remove the unit’s 18 O-rings.
From the top of the heat exchanger remove two baffles, one on either side of the damaged finned-tube.
On the side of the unit with the best access, remove the 4 bolts which attach the finned-tube
mounting-plate (6) the unit’s frame. This will allow partial withdrawal of the finned-tube mounting
plate. Insert the 9 special tools into the finned-tubes on this side of the unit.
Gently withdraw the finned-tube mounting plate (6) about 3” and remove the special tool from the
damaged fin tube. It should now be possible to remove this finned-tube from within the unit while
the remaining tubes remain in position. During this operation the finned-tube mounting plate at
the other end of the unit need not be moved.
Fit the replacement finned-tube, the special tool and slide the finned-tube mounting plate back
into position and remove the special tools. Refit and secure the two heat exchanger baffles.