Commissioning; Pre-Commissioning Checks - 18/25 Regular Shown; Filling The System - Bosch WORCESTER Danesmoor Utility Regular 2022+ 12/18 Installation, Commissioning And Servicing Instruction Manual

Floor standing oil-fired condensing boiler using conventional flue & room sealed flue
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Commissioning

6
Commissioning
6.1

Pre-Commissioning checks - 18/25 Regular shown

CAUTION: 230 Volts
▶ Isolate the mains electrical supply before starting any
work and observe all relevant safety precautions.
1. Check that the service and water pipes are connected correctly.
▶ Check that all unused sockets are capped.
2. Check that the oil supply is Kerosene (Class C2) and that the
pipework is connected correctly to the oil pump via the supplied
flexible oil hose.
▶ Check that the burner is seated correctly on its mounting flange and
that the oil hose/s are routed correctly.
See page 51, figure 90 for correct routing of the oil hose.
▶ Turn on the main oil supply valve at the tank, check the oil supply
pipework and connections. Rectify any leaks.
3. Check the flue is correctly fitted and the connections are secure.
4. Check the condensate pipework is correctly fitted and connected.
▶ Check the condensate trap is filled with water.
NOTICE: If the boiler is not to be commissioned then:
▶ After successfully completing all of the checks and any
rectification work, close the water valves, shut off the
oil supply and electrically isolate the boiler.
▶ Complete the installation part of the Guarantee
Registration Card, and complete a CD10 or equivalent
to inform the LABC of the installation.
▶ Refit the top panel.
1.
2.
Fig. 60 Pre-Commissioning checks
40
6.2
▶ Open all system and radiator valves.
▶ Turn on the water main stop cock.
▶ Open vented systems only:
– Turn on the water to the system feed and expansion cistern and
allow the system to fill.
▶ Sealed systems only:
– Check and if required, adjust the expansion vessel pressure using
the Schraeder type valve.
▶ Fill the system to between 1 and 2 bar pressure via a WRAS approved
filling link.
▶ Vent all radiators, retighten when completed.
▶ Monitor the pressure gauge during venting and repressurise if
required.
▶ Check the system and correct any leaks.
▶ Bleed air from at least one of the secondary heat exchanger air vents
(a radiator key is ideal for this). There are two venting bosses [1] on
the top of the secondary heat exchanger. Only one can used if fluing
3.
to the side.
Fig. 61 Manual vent points
4.
[1]
Manual vent points (each side of the secondary heat exchanger).
Greenstar Danesmoor Utility

Filling the system

System boiler only
The charge pressure of the built-in 10 litre expansion
vessel is 0.5 bar as supplied, which is equivalent to a
static head of 5 metres. At 1 bar pressure the vessel will
provide 92 litres expansion capacity, the boiler has a
primary water capacity of 20 to 22 litres and therefore
additional system expansion capacity may be required.
▶ If an extra expansion vessel is fitted to the central
heating return, adjust this to the same pressure as
the appliance internal expansion vessel, refer to
separate instructions supplied with the extra
expansion vessel.
1
2022+
and Utility System
2022+
- 6 721 846 263 (2022/01)

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