Glowworm Lighting 200 I, 250 I, 300 I Cold water inlet controls and pipework, Discharge pipework

2 Installation

2.7 Cold water inlet controls and pipework

Connect both parts of the water control pack.

When installing the valves, make sure they are aligned in such a way that the 15mm connection of the expansion relief valve can be connected to the tundish.

Install the assembled water control pack in the cold water supply at an appropriate place next to the solar cylinder. Make sure there is sufficient space for maintenance and the connection of the discharge pipe from the expansion relief valve.

Install the drain valve in the cold water supply at the lowest point between the solar cylinder and the water control pack.

We recommend applying a hose, which reaches about 1m under the base of the cylinder, to the outlet of the drain valve.

IMPORTANT: Risk of bursts for the solar cylinder! No stop valve may be installed between the cold water control pack

PRESSURE LIMITING	BALANCED		14187
VALVE WITH LINER		HOT WATER
STRAINER	PRESSURE
	COLD WATER	EXPANSION
	CONNECTION VESSEL
		CONNECTION

COLD	LEGIONELLA	FLUROCYL
	LOOP
WATER
		CONNECTION
	CONNECTION
SUPPLY

and the cylinder.

Install the water pack so that a discharge pipe of the expansion relief valve can be fitted with constant outward slope which can end at a safe, visible point where there is no risk of freezing.

EXPANSION

RELIEF VALVE

2.8 Discharge pipework

Diagram 2.4

IMPORTANT: Risk of the solar cylinder bursting due to overpressure! The outlet of the expansion relief valve must not be covered or closed.

Test the expansion relief valve regularly to avoid calcification.

To ensure an optimum performance of the solar cylinder, in particularly buildings in which a pressure controlled cold water is used, copper pipes with a diameter of at least 22mm should be used for the pipe from the main stop valve of the building to the solar cylinder.

If the discharge pipes are all together, the expansion relief valve may not be installed more than 500 mm away from the temperature and pressure relief valve.

The Flurocyl solar cylinder is supplied with an external hot water expansion vessel (DW EV).

Connect this expansion vessel to the installed water control pack as follows:

Screw the expansion vessel directly onto the water control pack, via the connection intended for this purpose or

Connect the expansion vessel to the water control pack with a copper pipe or an appropriate hose. Make sure the expansion vessel is supported sufficiently.

Use the supplied mounting bracket if the expansion vessel is to be mounted on the wall.

Connect thermostatic mixing valve cold supply to the pressure controlled cold water connection of the water control pack (if convenient).

NOTE: In areas with high water pressure (4 bar or more), a bath or shower mixer valve could also be connected to the pressure-controlled cold water connection of the water control pack. This is to ensure the pressure of the hot and cold water supply to the mixer valve is about the same. Any second cold water supply connection should be installed between the water control pack and the solar cylinder by means of a T-piece.

The outlet connections of both the temperature / pressure relief valve and expansion relief valve should be connected in 15mm copper pipe to the tundish supplied. The tundish should be installed vertically, as close to the Flurocyl as possible and within 500mm of the temperature and pressure relief outlet. It must be positioned away from any electrical components and installed in the same space as the Flurocyl cylinder, so that

it is visible to the user. The D1 discharge pipe from the T&P Valve/Expansion valve can be teed together upstream of the tundish.

The discharge pipework must be installed using minimum 22mm copper pipework from the 22mm connection on the tundish to a safe and visible discharge point.

There must be a vertical section of pipe at least 300mm long, below the tundish before any bends or elbows in the pipework. Increase the diameter of the pipework if the total resistance of the discharge pipework exceeds the figures shown in table 2.2. The installation of the discharge pipework must be in accordance with G3 refer to Statutory Requirements.

14