Technical information

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VIEW OF THE BOILER CONNECTIONS

LEGEND:

A = Central Heating Flow

B = Domestic Hot Water Outlet

C = Gas Inlet

D = Domestic Cold Water Inlet

E = Central Heating Return

F = Condensate discharge

G = Drain valve

H = Safety Valve Outlet

2.8 WA

TER

NNECTIONS

2.7 GAS CONNECTION

The local gas region contractor connects the gas meter to

he service pipe.

If the gas supply for the boiler serves other appliances

ensure that an adequate supply is available both to the

boiler and the other appliances when they are in use at

the same time.

Pipe work must be of an adequate size. Pipes of a

maller size than the boiler inlet connection should not be

used.

FIG. 2.4

IG. 2.5

KT007A

CENTRAL HEATING

Detailed recommendations are given in BS 6798:2000

and BS 5449-1:1990, the following notes are given for

general guidance.

PIPE WORK:

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 b

uilt-in automatic air release v

alve,

however it should be ensured as far as possible that the

appliance heat exchanger is not a natur

collecting point for air.

Except where providing useful heat, pipes should be

insulated to pre

ent heat loss and a

void freezing.

Particular attention should be paid to pipes passing

through ventilated spaces in roofs and under floors.

BY-PASS:

The appliance includes an automatic by-pass valve,

which protects the main heat e

xchanger in case of

reduced or interrupted water circulation through the

heating system, due to the closing of thermostatic valves

or radiators.

SYSTEM DESIGN:

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.