Ariston EP 15 UR 2 KW Manual - Página 8

Navegue en línea o descargue pdf Manual para Calentador de agua Ariston EP 15 UR 2 KW. Ariston EP 15 UR 2 KW 17 páginas. Unvented water heater

The EP 30 R 3KW is covered under the Building Regulations and therefore

it is not possible to accommodate the expansion water within the system

pipe work and consequently a set of expansion controls must be installed.

Note: The discharge from relief valves must be made in a safe and

conspicuous manner; therefore a tundish (Kit C) is available for 10 and 15

litre units if required.

Please note that in all cases the dielectric junctions must be

connected to the heater before any other connection is made (these

prevent an electrolytic reaction).

Only the use of copper pipe is recommended for connection to the

heater. If any other material is used it must be able to withstand 90°C

at 7 bar pressure for long periods.

No valve must be fitted between the expansion/pressure relief valve

and the water heater.

c) DISCHARGE PIPE WORK

NOTE:

1) The tundish must be vertical and fitted within 500 mm of the temperature

& pressure relief valve and must be located with the cylinder. The tundish

must also be in a position visible to the occupants, and positioned away

from any electrical devices. The discharge pipe from the tundish should

terminate in a safe place where there is no risk to persons in the vicinity of

the discharge and to be of metal.

2) Discharge pipes from the temperature & pressure relief and pressure

relief valve may be joined together.

3) The pipe diameter must be at least one pipe size larger than the nominal

outlet size of the safety device unless it's total equivalent hydraulic

resistance exceeds that of a straight pipe 9 m long.

i.e. Discharge pipes between 9 m and 18 m equivalent resistance length

should be at least 2 sizes larger than the nominal outlet size of the safety

device. Between 18 m and 27 m at least 3 times larger, and so on.

Bends must be taken into account in calculating the flow resistance.

See fig..5 and Table 2.

4) The discharge pipe must have a vertical section of pipe at least 300 mm

in length, below the tundish before any elbows or bends in the pipe work.

5) The discharge pipe must be installed with a continuous fall.

6) The discharge must be visible at both the tundish and the final point of

discharge, but where this is not possible or practically difficult; there should

The following guidelines refer to Building

Regulation G3. It is good practice to follow these

guidlines for all relief valve discharge pipe work.