Install Instructions

15
Boiler inspection and maintenance
Logano GC 144 II – 6 720 808 893 (2014/04)22
15.5.1 Cleaning the boiler with brushes
Burner removal
▶ Before opening a unit: disconnect electrical power and lock to
prevent accidental reactivation.
▶ Close main gas shut-off.
▶ Secure gas manifold with wire or cord.
▶ Remove igniter cable from ignition module ( figure 34, page 22).
▶ Disconnect cable connector from bottom of gas valve ( figure 34,
page 22).
▶ Label cables to the flame roll-out switch, then remove cable
( figure 34, page 22).
Fig. 34 Front view GC 144 II
[1] Flame roll-out switch
[2] Flame roll-out switch cable
[3] Gas valve
[4] Gas supply pipe
[5] Boiler temperature controller
[6] Ignition module
[7] Igniter cable
[8] Gas valve cable connector
[9] Pilot line
[10] Igniter cable
Fig. 35 Removing burner
[1] Screw nuts (two)
[2] Screws on gas manifold on top of gas valve (four)
▶ Remove four (4) screws from gas manifold on top of gas valve.
▶ Remove two (2) screw nuts on burner tray and take out the tray.
Fig. 36 Remove top cover
▶ Remove 4 screws on sides of the top cover and lift off.
▶ Remove top boiler insulation.
▶ Unscrew cleaning cover from the venting manifold.
▶ Cover control with foil to prevent entry of metal dust into the control.
▶ Use boiler brush to clean out flue gas passages.
▶ Clean combustion chamber and bottom insulation.
▶ Replace cleaning cover, install screws, and replace insulation.
WARNING: Risk to life from electric shock.
▶ Before opening a unit: disconnect electrical power
and lock to prevent accidental reactivation.
▶ If cables are connected incorrectly the system may
not operate correctly with possibly dangerous
consequences.
▶ After maintenance test the heating system for proper
function.
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