Installation manual

NSTALLATIONSECTION 3

CONNECTIONS: D,E

Fig. 2 shows the required connections for standard supply (solid lines).

The individual connection points can be seen in the installation instructions for the particular

item of equipment. This will also show how to connect multiple collectors together.

Connection D: This is the pipe-work in the vacinity of the solar station. The distance of this

ipe-work is usually small and is therefore economical to use copper.

If the distances are quite large in this area the resultant pressure drop has to be taken into

consideration.

Both the air eliminator (if used) and drain/fill valve should be fitted in the RETURN line.

Connection E: This is the long flow and return line to the collectors and can run for many

meters. For medium distances 20-30m and/or with many potential bends flexible pipe-work

is recommended to reduce fitting time. For long straight runs copper is best used to reduce

cost and the pressure drop. A combination of both will generally give the best results.

INSULATION

The stainless steel flexible pipe comes pre-insulated with insulation suitable for external use,

is tolerant of high fluid temperatures and resistant to ultra-violet radiation. If this pipework is

not used appropriate insulation has to be fitted and insulated appropriately with a UV stabe

coating.

VENT AND DRAIN

(SOLAR D & E)

Vent

The SOLARflo system is designed not to require vents positioned in inaccessible high

locations. A jet pump will be used to fill the system during commissioning by Andrews Water

Heaters which will eliminate air within the system.

WARNING: THE HEAT TRANSFER FLUID WITHIN THIS CIRCUIT

CAN REACH HIGH TEMPERATURES CREATING HOT WATER

AND STEAM.

Drain

A fill/drain valve is supplied with the SOLARflo system. This should be fitted at the lowest level

of the system.

If this is not used or cannot be installed in the lowest position, or the pipe-work is creates

potential traps, extra drains should be installed.

These should be

HT fittings.

SEE WARNING ABOVE REGARDING HIGH TEMPERATURES.