Bosch 12/18 User Manual

Page of 52
BOILER INSTALLATION
Note: The cabinet is not load bearing it
only provides weather protection for the
boiler inside.
1
Mark position of the 100mm services 
duct on the exterior wall and make a hole 
through.
2
Remove the key for the door fastners 
from its transport position in the left hand 
side panel flue outlet aperture.
Undo the screws at the bottom of 
the front panel (using the key provided) 
and remove the screws from the rear 
panel pulling both panels out and down 
to remove. Store safely away from the 
installation point.
3
Remove the screws from the top panel 
and lift up to remove, store safely away 
from the installation point.
4
Slide the pressure gauge up out of its 
bracket and carefully rest on top of the 
heat exchanger taking care not to snag or
kink the capillary.
5
Remove the screws securing the control 
box to the side panels and carefully rest 
the control box on top of the heat 
exchanger taking care not to snag or kink 
the capillaries.
6
Remove the screws securing the side 
panels to the base panel and lift the side 
panels off complete with the rear support 
bar (shaded grey) and carefully stand the
panels away from the installation point.
7
Loosen the flexable air duct clamp (A)
and remove the air duct from the burner. 
Depress the locking ears to unplug the 
burner lead (B) from the control box (C).
Unscrew the burner retainers (D), then 
withdraw the burner (E) from the boiler and 
store safely away from the installation point.
8
Remove the screws securing the base 
panel to the transit pallet and lift the boiler
off the pallet and into its installation 
position taking care not to scrape the 
base panel across the hard standing. Do 
not attempt to lift and position the 
boiler on your own. Do not use the 
copper pipes to move the boiler.
Fasten the base to the hard standing 
using the holes provided. Care should be 
taken to ensure that the base is level.
9
Refit the side panels and rear support 
bar and screw the side panels to the 
baseplate and boiler. 
Refit the control box and pressure 
gauge taking care not to kink the 
capillary tubes.
Measure the 100mmØ services duct to 
give at least 10mm inside the casing and 
to finish flush with the interior wall 
surface, cut to size and fit the duct. Fit the
100mm sealing ring where the duct 
enters the casing and seal the joint to the 
exterior wall and inside the cabinet with a 
suitable sealant.
BOILER INSTALLATION
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07) 
20
IN
ST
AL
LA
TI
O
N
2
2
3
4
5
6
7
8
7
A
B
C
D
E
WARNING: THIS APPLIANCE IS SERVICED AND REPAIRED EXTERNALLY. 
EXTERNAL EQUIPMENT OPERATED AT 230V SHOULD NOT BE INSTALLED, SERVICED OR
REPAIRED UNDER ADVERSE WEATHER CONDITIONS. 
THIS APPLIANCE IS INSTALLED AND SERVICED EXTERNALLY TO THE PROPERTY, BUT
THE ENGINEER MUST HAVE ACCESS TO THE INSIDE OF THE PROPERTY WHEN
INSTALLING OR SERVICING THE APPLIANCE.