Description; Introduction - gledhill GC2000/120/E-OV Design, Installation & Servicing Instructions

DESCRIPTION

INTRODUCTION

GulfStream 2000 (figures 1 and 2) is a
room sealed, gas fired, fan flued condensing
Combined Primary Storage Unit for supplying
wet central heating and mains pressure hot
water for dwellings with a design heat loss of
up to 25kW. The principle is to separate the
heat generator (i.e. the boiler) from the heat
emitters (i.e. the radiators and the domestic
hot water generator) by a thermal store. This
evens out the fluctuating demands for heating
and hot water and significantly improves the
system efficiency.
Another important feature of the system is
that because the thermal store acts as a buffer
between the boiler and the heating system,
any variety of space heating control systems
can be used, although the heating system
circulating pump is an integral part of the
appliance. This aspect is discussed further on
in this manual.
An important feature of this design is that
domestic hot water can be supplied directly
from the mains without the need for additional
safety controls in the DHW supply. This is
achieved by passing the mains water through
Figure 1 Models 2000/120/E 2000/130/E
a high performance plate heat exchanger.
The outlet temperature of the domestic hot
water is maintained by a printed circuit board
which controls the speed of the pump which
circulates primary hot water from the thermal
store through the primary side of the plate
heat exchanger.This is shown in Figures 4-7.
Because of the innovative method of hot water
production no in-line scale reducer is required
on the cold supply to the appliance.
If scale should become a problem the plate
heat exchanger is easily isolated and replaced
with a service exchange unit.
The GulfStream high efficiency appliance is
fitted with a unique electric emergency backup
system for both heating and hot water.
TECHNICAL DATA
All models are supplied with 9kW electric
boiler for emergency backup for heating and
hot water. They are fused internally at 5A
for gas circuit. A 230V , 50Hz electricity
supply fused at 45A is required direct from the
consumer unit.
The models GC 2000/120/E and 130/E are
suitable for sealed heating system. The models
GC 2000/120/E-OV and 130/E-OV are suitable
for open vented systems only.
Figure 2 Models 2000/120/E-OV
2000/130/E-OV
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