GOLD GV Water boiler series 3 — manual
Xd Service & maint. — special proced. (cont.)
Cleaning boiler heating surfaces
The service procedures listed in Section IXc of this manual must only be performed by a qualified boiler service technician. Failure to comply could result in severe personal injury, death or substantial property damage.
1.If inspection of the boiler flueways indicates the presence of soot, clean the boiler heating surfaces using the following procedure. The process requires removing the blower housing to allow spraying water through the boiler combustion chamber.
Before proceeding, obtain a GV gasket replacement kit, consisting of igniter, vent starter tee, flueway inspection port and blower gaskets.
To remove the blower assembly
1.Turn off boiler by turning down the thermostat. Then turn off power at the boiler service switch. Close manual gas valve on incoming gas line to boiler.
Turn off power and gas to the boiler. Failure to do so can cause severe personal injury, death or substantial property damage.
Wait several minutes after boiler has stopped to allow the igniter to cool to avoid severe personal injury or death.
2.See Figure 32.
3.Disconnect:
•gas tubing from gas valve outlet (NOTE that this is a
•pressure switch hoses.
•air inlet hose.
•blower motor wiring harness from control module.
•igniter harness connected to igniter plug.
•blower support bracket (remove screw securing blower housing to bracket — on left side of blower housing).
•ground wire.
4.Remove the two igniter screws and washers. Carefully remove the igniter. Use care when handling — igniter is very brittle. DO NOT touch igniter surface with hands or expose to any greasy substances.
5.Remove nuts from studs securing blower housing to front section.
6.Grasp blower housing and pull free from studs. Turn clockwise slightly, until blower assembly can be removed safely from inside of boiler jacket.
7. Remove burner cone and gasket for inspection.
To clean heating surfaces
1.Replace flueway inspection port cover (page 3, item g).
2.Remove the corrugated drain tubing from the bottom of the vent starter tee by releasing the tube clamp.
3.Place a catch pan under the tee to catch the cleaning water.
4.Spray water into the boiler combustion chamber opening.
5.Catch the runoff water in the pan below the vent starter tee.
6.Continue process until flueways are clean.
Replace blower assembly
1.Place a new blower housing gasket over the studs at combustion chamber opening.
2.Reinstall burner cone into chamber opening.
3.Position blower assembly over studs. Install nuts and tighten.
4.Install igniter and new igniter gasket. Fasten with screws and washers. Tighten only with
5.Connect:
a.gas tubing to gas valve outlet (turning left- hand thread hex fitting counterclockwise to tighten).
b.pressure switch hoses.
c.hose from gas valve to gas/air manifold.
d.air inlet hose.
e.blower motor wiring harness to control module.
f.igniter harness to igniter plug.
g.blower support bracket (with screw).
h.ground wire.
6.Be sure all wiring and hose connections are correct per Figure 32 and are secure on the hose barb fittings.
64 | Part number |