Technical data

14
Installation requirements
Installation of the Greenstar FS CDi Regular Series must
be in accordance with the relevant requirements of the
Gas Safety (Installation Use) Regulations at the time of
installation, current IEE Wiring Regulations, local Building
Regulations, Building Standards (Scotland) regulations
and bylaws of the local Water company and Health and
Safety Document No. 635 (Electricity at Work Regulations
1989). It should be in accordance with the relevant
recommendations of the following British Standards:
BS 6798; BS 5449; BS 5546:1; BS 5440:1; BS 5440:2;
BS 6891.
Gas Safety (Installation and Use) Regulations. All gas
appliances must be installed by a Gas Safe registered
person in accordance with the above regulations. Failure to
install appliances correctly could lead to prosecution.
The manufacturer’s notes must not be taken in any way as
overriding statutory regulations.
Sealed primary systems
The appliance is fitted with a manual reset high limit
thermostat and is suitable for use with a sealed
primary system.
The system should be installed in compliance with the
requirements of BS 5449: Part 1. The boiler must be fitted
with a spring loaded safety valve set to operate at 3bar
(45 psi) and the pipe connections made through the system
must be capable of sustaining a pressure of up to 3bar.
Manual air vents should be fitted at any high points in
the system.
The following is a list of major items which must be fitted to
the system:
1. Safety valve – 3bar
2. Pressure gauge – 0 - 4bar
3. Expansion vessel
4. Automatic air vent
Plastic pipework
The use of plastic pipework is acceptable. However, some
plastics are permeable to oxygen and must be avoided. Only
pipework with a polymeric barrier should be used. Please
note that the first 600mm of pipework connected to the
boiler must be of copper.
Open vented primary systems
Greenstar FS CDi Regular boilers are designed for
connection to an open vented fully pumped heating and hot
water system.
The following points are for guidance only. The system
installation should be carried out in accordance with
BS 5449:Part 1.
The feed and expansion pipes must rise continuously
from the appliance and must be of the minimum diameter
shown below.
The cistern must be arranged to provide a minimum static
head of 0.25 metres above the top of the highest point in
the heating circuit.
Air in the appliance is expelled through the vent pipe or
dissipated into the system. Manual air vents should be fitted
at any high points in the system.
Typical fully pumped sealed system