Expansion Vessel And Drain Valve; Water Systems And Pipework; Condensate Drain; To Remove The Condensate Trap - Bosch Condens 2000F30 Regular boiler Installation, Commissioning And Servicing Instruction Manual

18 | Pre-installation
4.2.2

Expansion vessel and drain valve

Connect an expansion vessel
EN12828 requires and expansion vessel to be installed with the boiler.
▶ Install an expansion vessel in the return to the pump
Fill and drain connections
EN1717 requires a filling of the heating system with drinking water only
via a fixed connection between water supply and heating circuit.
▶ Fit an external filling link between the DCW and CH Flow on the
appliance
4.3

Water systems and pipework

Primary system plastic pipework
• Any plastic pipe work must have a polymeric barrier with 600mm
(minimum) length of copper connected to the boiler.
• Plastic pipe work used for under floor heating must be correctly
controlled with a thermostatic blending valve limiting the
temperature of the circuits to approximately 50°C. The pipe work
from the boiler to the blending valve must be in copper.
Primary system/connections/valves:
• Do not use galvanised pipes or radiators.
• All system connections, taps and mixing valves must be capable of
sustaining a pressure of 3 bar.
• Drain cocks are required at all the lowest points on the system.
• Air vents are required at all high points on the system.
4.4

Condensate drain

DANGER: Danger to life by poisoning from escaping flue
gas. Flue gas can escape if condensate trap is not filled
with water or connections are not sealing properly.
▶ Fill the siphon with water
NOTICE: Additional advice on draining condensate
▶ Any condensate in the appliance and the flue gas
system must be drained in an appropriate manner
(flue gas system must have sufficient fall towards the
appliance)
▶ Comply with country specific standards and
regulations when connecting the condensate into the
sewage system
▶ Comply with local regulations
Condensate neutralisation systems are available as an
accessory.
Ensure that the condensate trap has at least 250ml of clean water in it
before the boiler is run.
If the flue has not been fitted yet, the water can be poured down the inner
flue pipe. If the flue has already been fitted, the condensate trap will
have to be removed and filled.
4.4.1

To remove the condensate trap

▶ Release the hose clamp [1]
▶ Remove the screw retaining the trap [2]
▶ Pull the trap down to remove the trap from boiler
▶ Pour 250ml of clean water into the top of the trap
▶ Re-fit the trap to the boiler
6 720 ... ... (YYYY/MM)
2
6720809859-77.1Wo
Fig. 12 Condensate trap
▶ Install condensate neutralisation systems (optional accessory) in line
with the installation instructions
▶ Ensure that the condensate pipework leading away from the
appliance falls away towards the drainage point
▶ Connect into the sewage system based on national and local
standards and regulations
4.5

Boiler location and clearances

4.5.1

Installation

• This boiler is only suitable for installing internally within a property at
a suitable location onto a fixed rigid non-combustible surface at least
the same size as the boiler and capable of supporting the boiler
weight.
• The boiler is not suitable for external installation unless a suitable
enclosure is provided.
4.5.2

Installations and servicing clearances:

The dimensions below are the minimum space required to install,
service and perform maintenance on the boiler only.
2
1
Fig. 13 Installation clearances
[1] 1900mm
[2] 2500mm
[3] 2000mm
[4] 70mm
1
3
4
Product Name