Installation & Servicing instructions ATAG A-Series
22
7 External hot water cylinders (Solo boilers)
Depending of the comfort preferences different external hot water cylinders can be
connected to the system boiler. The choice of the cylinder depends on the coil output. The
coil output must comply with the boiler output.
The A-Series is provided with an internal DHW control. The electrical connection can
be made in the boiler. To connect a cylinder to the A-Series boiler you need to order the
following optional articles:
- AA00030U ATAG 230V three way valve with 22mm compression ttings
and
- AA05204U ATAG cylinder sensor.
Only these articles are suitable for this purpose. Please contact ATAG Heating Ltd.
The wiring of the three way valve and cylinder sensor must be connected to the boiler
according the instructions supplied with these articles. See also page 23-25.
If desired a DHW on/off thermostat (volt free) can be used instead of the DHW sensor.
Use the separate 2-core connector on the back of the control unit for this connection.
See also page 23-25.
ATAG A solo with external cylinder Figure 7.a
8 Electrical connection
The appliance complies with the actual directives.
The installation must providing:
- a 230V -50Hz mains electrical supply is required fused externally at 5A.
- a deviation on the grid of 230V (+10% or -15%) and 50Hz
The installation must continue to comply with:
United Kingdom:
- the national rules for electrical installations.
Ireland:
- the ECTI national rules for electrical installations
Three way valve must be fitted
in the flow line.
A = Cylinder
B = Heating system
AB = Boiler
B
A
AB
AB
B
AB
A B
A
Terminal Block A-Series
ATAG Z = only suitable for ATAG Z-thermostat
On/off thermostat (only battery powered) Volt free
n.a. =not applicable
External safety contact
ATAG DHW cylinder sensor (only Solo boilers)*
ATAG Outside sensor1kOhm (ARZ0055U)
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