Ideal Heating LOGIC HEAT2 H12, Установка и обслуживание

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27 Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
2.20 CONDENSATE DRAIN
129.5
38
44
Condensate
Drain
T his appliance is fitted with a siphonic 75mm condensate trap
system that requires filling before operating the appliance for the
1st time or after maintenance.
All condensate pipework should conform to the following:
a. Where a new or replacement boiler is being installed, access
to an internal ‘gravity discharge’ termination should be one of
the main factors considered in determining boiler location.
b. Plastic with push fit or solvent connections.
c. Internal plastic pipe work a minimum of 19mm ID
(typically 22mm OD).
d. External plastic pipe must be a minimum of 30mm ID
(typically 32 OD) before it passes through the sleeved wall.
e. All horizontal pipe runs must fall a minimum of 52mm per
metre away from the Boiler.
f. External & unheated pipework should be kept to a minimum
and insulated with Class “O” waterproof pipe insulation (UV
Resistant).
g. All installations must be carried out in accordance to the
relevant connection methods as shown in the “Condensate
installation diagrams” & BS6798.
h. Pipework must be installed so that it does not allow spillage
into the dwelling in the event of a blockage (through freezing)
i. All internal burrs should be removed from the pipe work and
any fittings.
In order to minimise the risk of freezing during prolonged
very cold spells, one of the following methods of terminating
condensate drainage pipe should be adopted.
Internal Drain Connections
Wherever possible, the condensate drainage pipe should
be routed to drain by gravity to a suitable internal foul water
discharge point such as an internal soil and vent stack or kitchen
or bathroom waste pipe etc.
Condensate Pump
Where gravity discharge to an internal termination is not
physically possible or where very long internal pipe runs would
be required to reach a suitable discharge point, a condensate
pump of a specification recommended by the boiler or pump
manufacturer should be used terminating into a suitable internal
foul water discharge point such as an internal soil and vent stack
or internal kitchen or bathroom waste pipe etc.
External Drain Connections
The use of an externally run condensate drainage pipe should
only be considered after exhausting all internal termination
options as described previously. An external system must
terminate at a suitable foul water discharge point or purpose
designed soakaway. If an external system is chosen then the
following measures must be adopted:
The external pipe run should be kept to a minimum using the
most direct and “most vertical” route possible to the discharge
point, with no horizontal sections in which condensate might
collect.
- For connections to an external soil/vent stack.Insulation
measures as described should be used.
- When a rainwater downpipe is used, an air break must be
installed between the condensate drainage pipe and the
downpipe to avoid reverse flow of rainwater into the boiler
should the downpipe become flooded or frozen.
- Where the condensate drain pipe terminates in a purpose
designed soakaway (see BS 6798) any above ground
condensate drain pipe sections should be run and insulated
as described above.
- Where the condensate drain pipe terminates over an open
foul drain or gully, the pipe should terminate below the
grating level, but above water level, to minimise “wind chill” at
the open end. The use of a drain cover (as used to prevent
blockage by leaves) may offer further prevention from wind
chill.
Unheated Internal Areas
Internal condensate drain pipes run in unheated areas, e.g. lofts
basements and garages, should be treated as external pipe.
Ensure the customer is aware of the effects created by a frozen
condensate and is shown where this information can be found in
the user manual.
Note. Please check current HHIC condensate discharge
guidance available via the Gas Safe Registered Technical
Bulletins List.
Refer to Fig.
1 & 2
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3
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4
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5
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6