Pressure Relief Pipework; Boiler Locations And Clearances - Worcester Greenstar 12/18 Installation, Commissioning And Servicing Instruction Manual

Pre-Installation
4.6

Pressure relief pipework

• The pressure relief discharge pipe [2]should be at least 15 mm
diameter copper pipe and run downwards away from the boiler and
discharge away from any electrical or other hazard, preferably to an
external drain or soakaway.
• Pipe [2] should be finished with a partial bend, near the outlet to
prevent discharge onto entrances or other public access where it
could cause a hazard.
1
Fig. 16 Pressure relief pipe work
[1] External casing
[2] PRV discharge pipe
[3] Hardstanding
4.7

Boiler locations and clearances

WARNING: This appliance should not be installed where
there is a potential for excessive ground water coverage.
This boiler is only suitable for installing externally at a
suitable location onto a fixed permanent rigid surface
capable of supporting the boiler weight.
There must be a sufficient hard standing around the
appliance to allow for servicing.
The boiler must be installed on a flat level surface to
ensure that condensate does not enter the primary heat
exchanger.
Tarmac and wood hardstandings are not recommended.
Clearances:
▶ Minimum service and flue clearances.
– Above - 600mm
– Front - 600mm
– RH/LH clearance flue outlet on opposite side -10mm
– RH clearance flue outlet on rear - 45mm
– LH clearance flue outlet on rear - 85mm
– Rear clearance flue outlet on side - 50mm
– Rear clearance flue outlet on rear 2500mm
It is strongly recommended that the flue terminal faces away from
walls to reduce the possibility of wetting occurring.
16
1
2
3
2
3
Greenstar Danesmoor External
600mm
600mm
FRONT
600mm min
BASE
Fig. 17 Above clearance
85mm
FRONT
600mm Plan
view
45mm
Fig. 18 Rear exit flue clearances
FRONT
600mm
Plan
view
Fig. 19 Left exit flue clearances
FRONT
600mm Plan
view
Fig. 20 Right exit flue clearances
ErP and External System
2500mm
2500mm
2500mm
50mm
10mm
10mm
50mm
2500mm
ErP - 6 720 813 288 (2014/09)