Glow-worm BBU 45/4 - Manual (Page 10)

10 2000225023C
Diagram 4.1
HEAT
EXCHANGER
SECURING
SCREWS
(4)
COMBUSTION
CHAMBER
9384
COMBUSTION
CHAMBER
EXTENSION
SECURING
SCREWS
DRAUGHT
DIVERTER
10281
OUTSET
DRAUGHT
DIVERTER
BODY
4 Installation
4.1 Preparation
Remove draught diverter body, draught diverter and fittings
pack from carton.
Check contents of fittings pack against packed list.
Remove back boiler body from carton.
Remove the combustion chamber extension by loosening the
two securing screws and lift off, see diagram 4.1.
Put combustion chamber extension to one side until required,
see note below.
Take care not to damage the user control during installation,
see diagram 4.3.
Remove control/burner assembly from back boiler by removing
the four combustion chamber screws and the gas manifold
securing screw. Slide the control/burner assembly forwards to
remove, see diagram 4.10.
Note: If the back boiler is to be installed with a Chatsworth/
Dovedale fire front, discard the draught diverter and combustion
chamber extension, use the draught diverter supplied with the
fire front, see User, Installation and Servicing instructions
supplied with the fire front, see diagram 4.1.
4.2 Water Connections
IT IS EXTREMELY IMPORTANT THAT NO SERVICE PIPES
ARE ROUTED IN FRONT OF THE BOILER. If the builder’s
opening was previously used for solid fuel all pipework within
should be protected with PVC tape or equal. Pipework passing
through walls of the opening should be sleeved and made good.
4.3 Pumped Heating with Gravity Domestic
Hot Water
All pipework must comply with the current issue of BS5546.
The domestic hot water flow and return pipes must be 28mm.
Refer to diagram 1.4 for a diagrammatic layout.
For systems with gravity domestic hot water and pumped
heating circuits, pipe crossover maybe required. This type of
installation maybe simplified by the use of a Street elbow.
For installation of Street elbow, see diagram 4.2.
Pipes should then be bent accordingly.
If it is necessary to route pipework from both sides of the
builder’s opening, it is recommended that the heat exchanger is
positioned on the combustion chamber so that the gravity
circuits exit on the same side as the boiler connections.
If the heat exchanger connections are opposite hand to that
required, the heat exchanger can be turned as follows, carefully
tilt the back boiler first on its back, then tilt again so that the back
boiler is now upside down.
Remove the four screws securing the combustion chamber to
heat exchanger, see diagram 4.1, replace the combustion
chamber seal, from fittings pack, turn combustion chamber in
respect to heat exchanger and refit with the four screws.
Carefully upright the appliance by tilting as above.
INSET
DRAUGHT
DIVERTER
BODY
DRAUGHT
DIVERTER