Table of Contents
Advertisement
6.0 System Details - Page 10
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 connection to the boiler is
22mm (copper tail).
2. Due to space requirements at the rear of the tap bracket,
pipework should comprise of solder fittings.
o
o
3. A 20
C (36
F) drop in temperature across the system is
recommended for condensing boilers. Existing radiators may
be oversized and so allow this, but where radiator sizing is
marginal it may be advisable to retain a system temperature
o
o
drop of 11
C (20
F).
4. 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. 8a).
6.4 System Controls
1. For optimum operating conditions, the heating system
into which the boiler is installed should include a control
system.
2. Such a system will comprise of a timer control and
separate room or cylinder thermostats as appropriate. (An
integral twin channel programmer is available as an optional
extra).
3. The boiler should be controlled so that it operates on
demand only.
4. Operation of the system under control of the boiler
thermostat & TRV's only does not produce the best results.
6.5 Thermal Stores
1. The Barcelona System Boiler must not be fitted to
thermal stores which override the boiler control system.
Advertisement
Table of Contents
