Ariston GENUS 41-116-01 설치 지침 매뉴얼 - 페이지 9

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2.8

Water Connections

GENUS 23/27/30 MFFI

Fig. 2.5

Fitting the connection kit to the

Genus 27 RFFI System only.

It will be noted that the kit has two

connections not required for this boiler

i.e. the domestic cold inlet "E" and the

domestic hot water outlet "B" (see fig.

2.4) .

Although the cold water main supply

must be connected to the isolation valve

for the purpose of operating the filling-

loop, the isolation valve is NOT

connected to the boiler and should be left

in the OFF position.

The D.H.W. outlet is capped-off on the

boiler, therefore not requiring the

isolation valve to be used.

The Genus 27 RFFI System has 2 x 3/4"

B.S.P. male threads for the cylinder flow

and return. It is recommended that 2 x

22mm x 3/4" female iron fittings (not

supplied) be used on these connections

(using P.T.F.E. tape), before the boiler is

mounted on the wall.

B004

Legend

A = Central Heating Flow

B = Domestic Hot Water Outlet

C = Gas Inlet

D = Domestic Cold Water Inlet

E = Central Heating Return

F = Cylinder Flow

G = Cylinder Return

I = Safety Valve

Central Heating

Detailed recommendations are given in BS 6798:1987 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 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.

By-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 cock-type

valves within the system.

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. The taps must be at least 15mm nominal size and

manufactured in accordance with BS 2870:1980.

Safety Valve Discharge:

The discharge should terminate facing downwards 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.

View of the Boiler Connections

GENUS 27 RFFI SYSTEM

Fig. 2.4