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Concord CXC 48-116 (Natural gas)
CONTENTS
Air Supply. ........................................................................ 9
Boiler Assembly - exploded view. ............................... 10
Boiler Clearances. ........................................................... 6
Burner Assemblies - exploded views. .............................
CXC 48-70. ................................................................ 28
CXC 94-116. ............................................................... 29
Casing Assembly. .......................................................... 13
Commissioning. ............................................................. 18
Condensate Drain Connection ..................................... 12
Controls. ........................................................................... 5
Electrical Connections. ................................................. 15
Electrical Supply. ........................................................... 10
Fault Finding. ................................................................. 33
Flue System. ..................................................................... 9
Gas Connections. .......................................................... 13
Gas Safety Regulations ................................................... 3
Gas Supply. ..................................................................... 10
Hydraulic Resistance. ...................................................... 6
Initial Lighting. ................................................................ 18
Installation. ..................................................................... 10
Mandatory Requirements. ............................................... 9
Option Kits. ....................................................................... 5
Pump. ................................................................................ 7
Servicing. ........................................................................ 25
Short List of Parts. ......................................................... 36
Static Head Requirements. ............................................. 7
Ventilation. ........................................................................ 9
Water Circulation. ............................................................ 7
Water Connections. ......................................................... 5
Water Treatment. .............................................................. 8
Wiring Diagrams. ........................................................... 16
Concord CXC -
Installation
B.G. Certified - P.I. No. 87/AQ/340
INTRODUCTION
CONSTRUCTION
BOILER BODY
The Concord CXC boiler consists of 2 basic parts; a conventional
Concord CXD boiler; plus an additional heat exchanger.
The Concord CXC boiler body is constructed from cast iron
sections, insulated by a foil backed fibre glass blanket. It is mounted
on a sheet steel combustion chamber.
An aluminiumised mild steel flue collector hood and stainless steel
condensate sump is fitted on top of this heat exchanger. The sump
supports the secondary heat exchanger which is constructed from
aluminium finned tubes between aluminium and cast iron headers.
This heat exchanger is also insulated by a foil backed fibre glass
blanket.
Above the primary heat exchanger an induced draught fan is fitted
- capable of overcoming the resistance of a 30m length of 6" flue
pipe. The boiler is supplied with header pipework between the
primary and secondary heat exchanger.
Within this pipework, a 'shunt' pump is provided to ensure an
adequate flow through the primary heat exchanger, independently
of the system pump. This also ensures that a sufficient temperature
is maintained in the primary heat exchanger to prevent corrosion.
CASING
The combined boiler bodies are enclosed in a white, stove
enamelled casing which incorporates a control panel fascia.
The casing is specially designed to ensure easy access for both
servicing and cleaning of both heat exchangers.
BURNERS
The 3 burners are of stainless steel construction.
Gas Safety (Installation and Use) Regulations, 1994,
amendments 1996 or rules in force.
It is the law that all gas appliances are installed and serviced by a
CORGI registered installer (identified by
the above regulations. Failure to install appliances correctly could
lead to prosecution. It is in your own interest, and that of safety, to
ensure that the law is complied with.
The Concord CXC 48/116 range of boilers has been tested and
certified by British Gas to prEN656 for use with Natural gas only.
Note. The CXC 48 and CXC 70 boilers are intended for use as
COMMERCIAL BOILERS and are NOT certified for use in domestic
applications. A domestic installation is defined as an installation
where the boiler takes its combustion air from a living space or
from a room directly or indirectly connected with the living space.
It is important, therefore, that no external control devices - e.g.
flue dampers, economisers etc., are directly connected to this
appliance unless covered by these Installation and Servicing
Instructions or otherwise recommended by Caradon Plumbing
Limited in writing. If in doubt please enquire.
Any direct connection of a control device not approved by Caradon
Plumbing Limited could invalidate the British Gas Certification,
the normal appliance warranty and could also infringe the Gas
Safety Regulations. Table 1, Table 2 and the descriptive notes
which follow contain all the essential data likely to be required by
the installer.
Destination Countries: GB and IE
) in accordance with
3
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