Ferroli Falcon Installation, Servicing And User Instructions Manual - Falcon

11

FALCON

Fig. 9

Central Heating

Detailed recommendations are given in BS6798, BS5449, BS6700 and CP342 Part 2.  Pipework not forming part of the 

useful heating suface should be insulated to prevent any heat losses or possible freezing (i.e. in roof spaces or ventilated 

underfl oor spaces).  Drain taps should be positioned at the lowest point of the system in accessible locations to permit 

the whole system to be drained down.  The drain taps should be in accordance with BS2879. Copper tubing to BS2871, 

Part 1 is recommended for water carrying pipework.  Pipework in horizontal runs should have a gradient where possible 

to facilitate the removal of air.  Ensure that the boiler heat exchanger is not a natural point for  air collection.  A typical 

heating system with domestic hot water circuit is illustrated in fi g. 9.

Important - If thermostatic radiator vales are fi tted a bypass must be fi tted to ensure a minimum fl ow rate through the 

boiler of 6 l/min.  The bypass should be fi tted as far as possible from the boiler.

Make Up Water

Provision must be made for replacing water lost from the sealed system.  Reference should be made to BS6798, for 

methods of fi lling and making up sealed systems.  There must be no direct connection between the boiler's central 

heating system and the mains water supply.  The use of mains water to charge and pressurise the system directly, is 

conditional upon the Local  Water Byelaws.  Again any such connection must be disconnected after use.  A typical 

temporary fi lling loop is shown in fi g. 10.

Domestic Hot Water

Always fi t a scale reducer in "hard water areas" (18 clarke degrees or over)".  A 15mm copper connection point on the 

boiler for attaching to the main supply is provided.  The maximum domestic water pressure for the inlet supply is 10 bar 

(145 P.S.I.).  If the cold mains supply exceeds 5 bar (72 P.S.I.), a water governor or pressure reducing valve must be 

fi tted by the installer into the mains supply in an inconspicuous but accessible position preferable between 3 and 5 metres 

(10-16ft) before the appliance.  Such a valve must be approved by the Water Research Council.

Attention - is drawn to the Model Water Byelaws.

Fittings manufactured from duplex (alpha-beta) brass are not 

acceptable for underground use and certain water undertakings 

will not accept their use above ground.

Ensure all pipework is adequately supported

Gas

Cold water

Additional expansion 

vessel C.H.

(if required)

Filling

point 

C.H.

Bypass

NOTE: A bypass must be fi tted as far as possible from 

the boiler if thermostatic radiator valves are fitted 

thoughout.

Key

1.   Filling point C.H.

2.    Temporary connection

3.    Cold water supply

Fig. 10