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IPE

ORK

Copper tubing to BS EN 1057:1996 is recommended for water pipes.

Jointing should be either with capillary soldered or compression fittings.

Where possible pipes should have a gradient to ensure air is carried

naturally to air release points and water flows naturally to drain taps.

The appliance has a built-in automatic air release valve, however it should

be ensured as far as possible that the appliance heat exchanger is not a

natural collecting point for air.

Except where providing useful heat, pipes should be insulated to prevent

heat loss and avoid freezing.

Particular attention should be paid to pipes passing through ventilated

spaces in roofs and under floors.

PASS

The appliance includes an automatic by-pass valve, which protects the main

heat exchanger in case of reduced or interrupted water circulation through

the heating system, due to the closing of thermostatic valves or radiator

valves within the system.

YSTEM

ESIGN

This boiler is suitable only for sealed systems.

Drain Cocks:

These must be located in accessible positions to permit the draining of the

whole system and should be fitted at all low points. The taps must be at least

15mm nominal size and manufactured in accordance with BS 2870:1980.

AFETY

ALVE

ISCHARGE

The discharge should terminate facing downward on the exterior of the

building in a position where discharging (possibly boiling water & steam) will

not create danger or nuisance, but in an easily visible position, and not

cause damage to electrical components and wiring.

The discharge must not be over an entrance or a window or any other type

of public access.

ELEASE

OINTS

These must be fitted at all high points where air naturally collects and must

be sited to facilitate complete filling of the system.

The appliance has an integral sealed expansion vessel to accommodate the

increase of water volume when the system is heated.

It can accept up to 6 litre (1.3 gal) of expansion water. If the heating circuit

has an unusually high water content, calculate the total expansion and add

an additional sealed expansion vessel with adequate capacity. This should

be located on the return pipe work as close as possible to the pump inlet.

- C

AINS

ATER

EED

ENTRAL

There must be no direct connection to the mains water supply even through

a non-return valve, without the approval of the Local Water Authority.

ILLING

A temporary method for initially filling the system and replacing lost water

during servicing and initial filling (in accordance with current Water

Regulations), is provided as an integral part of the connection kit (see F

2.4). The flexible hose must be removed once the system has been filled.

EATING

ESIDUAL

EAD OF THE

OILER