Atag E 22C, Инструкции по установке и обслуживанию

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Installation & Servicing Instructions ATAG E-Series
10
If an unacceptable temperature is detected, then the control will repeatedly try to achieve
water flow, and if this does not work then the boiler will switch off.
If the capacity of the boiler pump is insufficient, an extra external pump can be installed
in combination with a low velocity header in series with the boiler. The electrical side of
this external circulation pump can be connected in the Control Tower, by means of an
optional cable tree, which can be ordered seperately (art.nr. S4643900). The external
pump will switch at the same times as the boiler pump.
The maximum absorbed current consumption of the external circulation pump may be
230 W (1 Amp). The extra external pump must be selected according to the installation
resistance and the required flow.
pump index lines graph 1
As standard the boiler is provided with a water filter in the return pipe of the boiler. With
this, possible contamination of the central heating water is prevented from ending up in
the boiler. The boiler is also provided with an internal safety valve set at 3 bar. This is
connected to the waste discharge together with the condensation discharge.
If all, or a large part of the radiators are provided with thermostatic radiator valves it is
advisable to use a pressure difference control (bypass) in order to prevent flow problems
in the installation.
The boiler is designed to be used on a sealed system only.
Additives in the installation water are only permitted in consultation with the
country distributor. ATAG Heating UK Ltd recommend the use of either
Fernox or Sentinel products.
Q(m³/h)
E22S, E32C
E22C, E32S
UP 20-60
H(m)
UPS 20-50