Installation manual

EQUIPMENT DESCRIPTION SECTION 1
3
REF CIRCUIT EQUIPMENT
1 SOLAR Solar collectors
GLAZED FLAT PLATE
Collects both direct and diffuse solar radiation and transfers it to the water medium. GLAZED FLAT PLATE:
Insulated frame with copper pipe-work welded to an absorbtion plate. This is covered with special glass
(with low thermal expansion co-efficient) to allow maximum radiation to pass through but to limit heat loss.
2 SOLAR A controller to control the solar gain
and intergrate the 'top up' heating.
A specific controller designed to offer pump control and temperature sensing to allow solar
heat collection. Its main function is to check difference between storage and collector;
temperatures to decide when heat gain is achievable. This controller however also covers
many other functions including primary heating and legionella control.
3 SOLAR Solar pumping system Comprising solar pump, mounting pipe-work, flow regulator, air eliminator, isolation, relief valve
and connections for the expansion line. This is generally combined with the pipework
ancillaries and expansion vessel to form the ANDREWS SOLAR STATION.
4 SOLAR Solar pipe-work ancillary equipment
including expansion system.
The interconnecting pipe-work is supplied and fitted by the installer. The connecting pipework on
the 'Solar Station' is supplied and factory fitted by Andrews Water Heaters. This also includes the
solar expansion vessel (to absorb expansion due to temperature and vapourisation of fluid within
the Solar Collector), drain/vent/fill connection and optional automatic air eliminator.
5 DHW The DHW storage cylinder(s)
SINGLE COIL PRE-HEAT or TWIN-
COIL COMBINED
This will be either a PRE-HEAT (single coil) OR A TWIN-COIL COMBINED CYLINDER.
It comprises a stainless steel cylinder either the one lower coil or twin coils (higher and lower).
The lower coil transfers the heat from the solar circuit. The higher coil (where supplied) heats
the upper section using primary heat at 82∫C or an immersion heater. Where no top heater is
used the DHW water passes to another heating 'top up' system.
6 DHW DHW expansion system Expansion veseels sized to accomodate the expansion due to temperature increase. The
equipment also includes expansion relief valve and lockshield valve.
7 DHW De-stratification/anti-
legionella pumping system
A DHW pump with valves. On a twin-coil cylinder destratification loop the pipe-work connects
the top of the cylinder to the bottom. It is designed to take the whole cylinder up to a
temperature and eliminate stratification. In a single coil unit the bottom coil of the cylinder is
connected to the DHW outlet of the primary DHW heating system.
8 DHW Cold feed equipment Consisting strainer isolation and check valve (possibly combined). Fitted to the cold water inlet
supplying the DHW vessel.
9A PRIMARY
SYSTEM
This can be a variety of equipment either supplied as part of a package or supplied by others.
This can vary from no primary system, to a direct fired water heater, a single primary actuator
to a full primary boiler system with seperate controls. It is designed to supply primary hot water
as 'top up'/back up to the solar heating. In general it can be a complete system of it's own.
9B DHW TOP
UP
This equipment is used when a PRE-HEAT DHW cylinder is used. This can be a variety of
equipment designed to heat the DHW to required water temperature. This can be used in
conjunction with the primary heating system.