Oil Burner And Pump - Bosch WORCESTER Greenstar Heatslave II 12/18 Installation, Commissioning And Servicing Instruction Manual

Pressure relief connection
▶ Connect the pressure relief pipe [N] to a copper discharge pipe
(15mm Ø min.).
Fig. 38 Pipe connections
[A] CH flow 22mm Ø copper (28mm Ø on 25/32 models)
[B] DHW flow 22mm Ø
[C] DHW water main inlet 15mm Ø
[D] CH return 22mm Ø copper (28mm Ø on 25/32 models)
[F] 10mm Ø oil supply connection
[G] Oil isolating valve (10mm Ø)
[H] Flexible oil hose (Replace hose at annual service to prevent leaks)
[J] Flue manifold condensate outlet
[K] Condensate outlet and flexible push fit connect (21.5 mm Ø) -
supplied
[L] Condensate pipe - not supplied
[M] Condensate trap - supplied
[N] Pressure relief (15mm Ø)
[O] Drain
[P] Fixing point for optional return oil pipe
[S] Manifold access cover screws
[T] Flue manifold access cover
[U] Condensate collection sump
[W] Oil supply pipe (not supplied)
Greenstar Heatslave II 2022 + 6 721 843 978 (2022/01)
Fire valve
Check that the oil supply pipe has a fire valve fitted externally to the
building with the fire valve sensor located in the case.
A fire valve sensor clip [1] is provided for this purpose on the support
bar between the side panels.
2
1
Fig. 39 Fire valve clip
[1] Fire valve clip
[2] Fire valve label
The fire valve label [2] states that the fire valve should be rated at 85°C
or above to avoid nuisance cut outs.
5.7

Oil burner and pump

CAUTION: MAINS SUPPLIES
▶ Isolate the oil & water mains supply before starting
any work and observe all relevant safety precautions.
NOTICE: Nozzle orifice contamination
▶ to avoid contamination do not dismantle, clean or
touch the nozzle tip
Oil burner nozzle
Before removing or fitting a new nozzle refer to figure 40:
▶ Remove the screws [1] from the blast tube [2] and remove the blast
tube
There is a recirculation tube fitted to the 12/18 models,
this does not need to be removed from the blast tube
▶ Unplug the HT leads [4]
▶ Loosen the screw [3] securing the break plate[5] and slide the unit
off
▶ Use a suitable spanner to stop the nozzle body turning
▶ Remove the nozzle [8]and secure the new nozzle, hand tight
▶ Tighten the nozzle utilising the two spanners used during removal, do
not overtighten
▶ Refit the break plate ensuring that the photocell and the break plate
hole [5] are aligned and secure with the screw [3] into the seating
provided [7]
▶ Reconnect the HT leads [4]
▶ Refit the blast tube [2] and secure with the screws [1]
Installation
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