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PRE-INSTALLATION
3.5
Boiler internal drain
ErP
The CDI Classic
has the facility to drain the water direct from the
boiler through the condensate pipe.
Fig. 14 Drain tap positions
If the boiler uses a soakaway or a condensate pump:
▶ Use an esxternal drain point on the system to prevent excess system
water being drawn through the saokaway or condensate pump
3.6
Pressure relief pipe work
NOTICE:
▶ The pressure relief valve is a safety device for the
boiler and if activated may discharge boiling water or
steam through the relief valve drain pipe.
▶ Care should be taken when siting the outlet pipe so
that it does not cause an obstruction or discharge
above a window, entrance or other public access
where it could cause a hazard.
• The pressure relief drain pipe (1) from the boiler should be at least
15mm diameter copper pipe and run downwards, away from any
electrical equipment or other hazard, preferably to an external drain
or soak away.
• Pipe (1) should be finished with a partial bend, near the outlet to face
the external wall (as shown) to help prevent freezing.
14
1
2
3
4
6 720 815 723-02.2O
Fig. 15 Pressure relief pipe work
2
1,3
4
Table 13 Key to fig 7
Remote Pressure Relief Valve Kit
For installations in a cellar or basement, there is an accessory that is
available from Worcester that allows the pressure relief valve to be fitted
remotely from the boiler. This accessory can be used when there is
difficulty accessing an external drain.
The part number for this kit is: 7 716 161 071
3.7
Boiler location & clearances
This boiler is only suitable for installing internally within a property at a
suitable location onto a fixed, rigid surface at least the same size as the
boiler and capable of supporting the boiler weight.
COMPARTMENTS:
Follow the requirements of BS6798 and BS5440 Part 2 and note:
• Minimum clearances must be maintained
• An access door is required to install, service and maintain the boiler
and any ancillary equipment.
• If an airing cupboard is adapted to house a boiler, then the airing
spaces must be separated from the boiler compartment by a
noncombustible partition. The partition may be perforated, if
required, by holes not exceeding 13 mm in diameter.
• If the appliance is fitted into a cupboard or a compartment is built
around the appliance after installation, then the compartment must
be built or lined by a non-combustible material.
BOILER CLEARANCES:
The drawing below Fig. 16 shows the minimum space required to install
and service the boiler.
1
2
3
4
Outside wall
Drain pipe
External drain
NOTICE:
No surface protection is required against heat transfer
from the boiler.
2
6720646608-123.1Wo
6 720 815 724 (2015/11)
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