Austria Email EKL 120 Instrucciones de uso y mantenimiento - Página 14

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CENTRAL HEATING CONNECTION (ONLY EKR)

The heat exchanger is suitable for connection to a water heater at a pressure of up to 6 bar. A forced

circulation with pump is required. If the storage tank is connected to alternating current, the pump can

be controlled via the free charge pump contact. The temperature setting of this contact is identical to the

temperature level of the two contacts for the fitted electric heater.

The bare-tube heat exchanger of the EKR series must be flushed properly before the initial installation is

performed. If the bare-tube heat exchanger is not used, the outer tube ends must be sealed to prevent

back-cooling.

In the event of a combination with boilers or gas fired water heaters, an additional sensor protection tube

(clear width 9.5mm) is fitted in the heating flange for insertion of the sensor (to be provided on site – capil-

lary tube or electronic sensor). The sensor tube protrudes above the topmost coil of the heat exchanger.

If a hot water storage tank with bare-tube heat exchanger is installed, a shut-off element or circulation

brake should be fitted in the inflow line to prevent backheating into the heating circuit when the central

heating is switched off and electric operation is active.

However, under no circumstances is it permissible to shut off the inflow line and the return line because

this would make it impossible for the water inside the heat exchanger to expand, which could damage the

heat exchanger.

If the water heater is heated by its heat exchanger, then it must be ensured that in no case the hot water

temperature exceeds 85 °C, as otherwise the safety temperature limiter of the electric heater can trigger

and render it inoperable.

In order to allow for a trouble-free repair, a removal or exchange of the device, it is necessary to establish

the connection of the tank by means of a detachable connection (Dutch). Tank leaks as a result of an im-

proper connection and resulting damage and consequential damage are excluded from the warranty and

product liability.

ELECTRICAL CONNECTION

General information

a) As a general rule, the electrical connection must be made in accordance with the wiring diagram glued

inside the connection chamber of the storage tank!

b) Ensure that the supply voltage is correct!

c) Fit an all-pole disconnector with 3mm contact opening width in the electric feeder. Automatic circuit

breakers can also be used as disconnectors.

d) The connection cable must be fed through the cable screw connection into the connection chamber of

the storage tank and protected with a strain relief mechanism against pulling out and twisting. Tanks

with heater battery have a second cable entry point for the charge pump control cable.

e) For installation and intrusive interventions into the device, the hot water storage tank must first be isola-

ted completely (all poles) and on every side from the power supply in compliance with EN 50110 (ÖVE,

TAEV). Before carrying out any additional work, the system must be secured against being switched on

again (remove the fuses, trigger the mains circuit breaker).

Id.Nr.: 228843-16