gledhill GC2000/120/E, Design, Installation & Servicing Instructions

Page: 13 / 52

Supplied By www.heating spares.co Tel. 0161 620 6677
Page 12 Page 13
GULFSTREAM
2000
3. SPACE HEATING SYSTEM
All GulfStream models are available for both
sealed and open vented heating systems
The design heat losses for the property will need
to be calculated. We would recommend that the
method for heat loss calculations, radiator
and boiler sizing contained in BS 5449: 1990 is
used and compared to the maximum central
heating load listed in Technical Data on
page 4. Allowances for domestic hot
water requirements have been built into the
difference between the nominal heat output
and maximum central heating load figures
shown on page 6:
If large baths or extra bathrooms are required
please seek guidance from Technical Sales
Department.
Note: A room thermostat and/or thermostatic
radiator valves may be used: the former being
wired directly to the boiler terminal strip - refer
to Figures 29 and 30.
All the recommendations with regard to
pipework systems in this manual are generally
based on the use of BS/EN Standard copper
pipework and fittings.
However, we are happy that plastic pipework
systems can be used in place of copper
internally as long as the chosen system is
recommended for use on domestic heating
systems by the manufacturer and is installed
fully in accordance with their recommendations.
We always recommend the use of barrier pipe
for these systems.
It is also essential that if an alternative pipework
material/system is chosen the manufacturer
confirms that the design criteria of the new
system is at least equivalent to the use of BS/EN
Standard copper pipework and fittings.
SYSTEM DESIGN
3.1 General
Figure 11 Pump Head Available for CH System
System load kW based on system T of 11ºC
Pump set at maximum
0
1
2
3
4
5
0
0.25 0.5
0.75 1 l/sec
0
11 22 33
mH
2
0
*
* If head available is insufficient fit an additional
system pump (2 pumps in series)