Charnwood LA30iB installation instructions Thermostat, InjectorTee

	22mm Open Vents
Feed and Expansion Tank		Cold Water Tank
Overflow		Overflow
		Domestic Hot Water Draw Off
Gravity Radiator
		Drain Cock
		Indirect Hot Water Cylinder
Minimum Return		Central Heating Flow
Thermostat		Circulating Pump
		Central Heating Return
		Drain Cock at Lowest Point
Fig. 7 Typical Central Heating and Hot Water System
	Using 4 Boiler Tappings
		22mm Open Vents
Feed and Expansion Tank		Cold Water Tank
	Overflow	Overflow
		Domestic Hot Water Draw Off
Gravity Radiator
		Drain Cock
		Indirect Hot Water Cylinder
Minimum Return Thermostat		Central Heating Flow
Circulating Pump
Central Heating Return
Drain Cock at Lowest Point		Injector Tee
Fig. 8. Typical Central Heating & Hot Water System
	Using 3 Tappings
	Gravity Return
	(28mm Pipe)
Central Heating Return		Common Return to Boiler
		(28mm Pipe)
	Fig. 9. InjectorTee.
		Page 9
		LA30iB 3.99

with the centre-line of the chimney, and must also extend to the point where the chimney narrows to its final size. Any large voids must be filled and flaunched to the flue pipe to ensure that all soot deposits can be cleared when the appliance is swept.

Ensure that the flue pipe is not obstructed or restricted in any way and that all joints are well sealed.

Before infilling cover the front of the fire to protect it. Ensure that the flue pipe is central and then fill the space between the body of the fire and the structural brickwork with vermiculite (eg. micafil or similar) concrete. Ensure that there are no air pockets. The recommended mix is six volumes of vermiculite granules to one volume of portland cement thoroughly mixed together. Enough water should be added so that no more than one or two drops of water are released when a handful of the mixture is squeezed.

After filling with vermiculite flaunch the top of the flue connector pipe to the chimney with lime mortar.

Make good the holes in the front and side of the chimney breast making sure that they are completely airtight. A typical installation is shown in Fig. 10.

In most installations it will be possible to sweep the chimney through the appliance. If this is not possible then some alternative means (such as a soot door), must be provided.

The free-inset method of installation may be used instead of in-filling. Details are available on request.

THERMOSTAT

Before lighting the fire check the cold setting distance of the thermostat.

With the control knob at the maximum setting the flap should be 18 mm from the air inlet as shown in Fig. 11. To adjust the distance slacken the locking nut and adjust as necessary. When set correctly re-tighten the locking nut. Ensure that the flap opens and closes freely as the knob is turned.