Technical data

6.0 System Details

Boiler

Flow

Return

Copper

0.5m

Copper

0.5m

Fig. 4

Flow

Return

Pump

Boiler

Magnetic

Cleaner

Fig. 5

Manual Air

Vent

6.3 Pipework

1. The sizes of flow and return pipes from the boiler

should be determined by normal methods, according to

the requirements of the system. The connections to the

boiler will accept 22mm pipe fittings. Compression

fittings must be used to prevent heat damage to the

boiler (as supplied see Section 9.3).

2. A 20 °C drop in temperature across the system is

recommended for condensing boilers, but where

radiator sizing is marginal it may be advisable to retain a

system temperature drop of 11°C.

3. In systems using non-metallic pipework it is necessary

to use copper pipe for the boiler Flow and Return. The

copper must extend at least 1 metre from the boiler

and include any branches (Fig. 4).

6.4 Bypass Requirements

1. An Automatic Bypass must be fitted. The appliance

requires a minimum bypass of 7 l/min for open vented

systems.

6.5 Magnetic Cleaner (Fig. 5)

1. A ‘ADEY MagnaClean TwinTech’ Magnetic Filter

must be fitted on the return to boiler as close to the

appliance as possible. FAILURE TO FIT THIS DEVICE

WILL INVALIDATE THE APPLIANCE WARRANTY.