andrews L24/31, Инструкция по установке, Руководство по эксплуатации и обслуживанию

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CLEANING THE
STORAGE
VESSEL
ALL MODELS
SERVICING SECTION 6
36
The flue ways should be checked and cleaned annually.
1. Depress catch under control knob and turn to OFF. Remove outer burner cover and slide
inner door to right. On L63/71 and L84/74 models, the inner cover must be lifted out.
2. Disconnect burner gas tube, pilot tube and thermocouple at gas control.
3. Remove burner assembly complete with pipes and thermocouple lead.
4. Remove split flue clip from flue and lift off draught diverter.
5. Inspect and clean secondary flue installation as necessary.
6. Lift out baffle from inside central flue way. (not Model L84/74)
7. Clean flue way with a brush and remove deposits from underside of storage vessel and
from flue baffle.
6. Re-assemble in reverse order. IT IS IMPORTANT THAT THE BURNER IS CORRECTLY
LOCATED IN THE CENTRE OF THE COMBUSTION CHAMBER. DO NOT
OVERTIGHTEN THE THERMOCOUPLE CONNECTION. SCREW IN FINGER TIGHT
THEN TIGHTEN A FURTHER 1/4 TURN USING A SPANNER.
7. Re-light heater and carry out relevant commissioning procedures as detailed in Section 4.
The flue ways should be checked and cleaned annually.
1. Remove burner as described in Burner Assembly, Hi-Flo Range.
2. Remove the split clamp and raise the flue system to clear the draught diverter socket.
3. Remove securing screws and remove top cover complete with draught diverter and
adaptor ring.
4. Remove top insulation and keep safe.
5. Remove flue collector cover.
6. Remove flue baffles and brush flue tube using 75mm diameter brush with minimum
length of 1.4m.
7. Remove deposits from tank top and burner compartment. Replace baffles.
8. Re-assemble collector cover, insulation, top cover, flue system and burner assembly.
9. Carry out relevant commissioning procedures as detailed in Section 4.
NOTE! For models L65/169 and L81/251, where top inlet/outlet connections are used,
both hot and cold connections must be disconnected before removing the top cover.
The storage vessel should be checked and cleaned annually.
Scale formation in the base of the vessel may occur, particularly in hard water areas and is
normally associated with high usage and high water temperatures. It is characterised by a
rumbling noise when the main burner is lit. Scale formation in the base of the vessel will
affect the efficency of the water heater and reduce the life of the storage vessel.
It should be noted that the failure of the storage heater vessel due to scale formation
on the base will not be covered by the terms of the warranty.
Any scale formation which cannot be removed by normal means of cleaning should be
removed by chemical descaling. See below
DESCALING
When descaling the heater, attention is drawn to the following guidelines.
CAUTION!
DUE TO THE CORROSIVE NATURE OF DESCALING FLUID, IT IS ESSENTIAL THAT
SUITABLE PROTECTIVE CLOTHING IS USED AND ADEQUATE VENTILATION AVAILABLE.
1. Turn gas control to OFF and isolate gas supply.
2. Close water inlet valve and drain heater tank.
3. Remove magnesium anode(s). It is recommended that new anode(s) is(are) fitted.
4. Add suitable hydrochloric acid based descale fluid. The requirement is normally 5 litres
for Standard Models and 10 litres for Hi-Flo Models, or more dependant on amount of
limescale present.
5. After a minimum of one hour, restore gas supply and turn on main gas burner for 2
minutes maximum.
6. Isolate gas supply and drain descale fluid through drain port.
7. Open cold water feed valve and fill heater tank.
8. Drain and flush out heater for 20 minutes minimum.
9. Replace anode(s).
10. Restore gas supply and re-light heater.
IMPORTANT!
Remove Correx anode(s) if fitted and plug off the connections using 3/4” BSP plugs.
(Hi-Flo models only). Refit the Correx anode(s) when the descaling operation is complete.
FLUE WAYS
STANDARD
RANGE
FLUE WAYS
HI-FLO RANGE