Vaillant Solar System and auroSTOR unvented solar..., Start-Up, Maintenance And Troubleshooting Manual

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41 Manual - Solar hot water systems 0020009607_02
a
Caution!
Risk of damage!
The immersion heater is equipped with a
thermal cut out and may under no circumstance
be replaced by a standard immersion heater.
Only correct original Vaillant spare parts are allowed.
5.8.2 Electrical connection to the cylinder control
device
The Vaillant auroSTOR solar cylinder and an appropriate
Vaillant boiler can be controlled by various controllers
(refer to Section 4.8, Solar control). An overview of the
application options for controllers can be found in
Table 5.7 (refer to Section 5.8.3, Combination options of
the control components).
The auroSTOR solar cylinder is equipped with
appropriate thermal cut outs for the cylinder and solar
circuit and with a cylinder thermostat.
The entire inner wiring has been pre-assembled at the
factory.
The cylinder thermostat for the regulation of the hot
water temperature (
1 , Fig. 5.20) can be set between
20 °C and 65 °C. The installed thermal cut out is
activated at 90 °C. If the thermal cut out is triggered,
the motorised 2 port valve is actuated, which then
blocks the flow to the cylinder.
a Caution!
Risk of damage!
Switch off the power supply before resetting the
thermal cut out or making any other changes to
the temperature setting of the cylinder
thermostat.
2
1
1
2
3
N
L
immer
sio
n
he
at
er
C°
c
ylind
er
co
n
tr
o
l
C°
Fig. 5.20 Cylinder control device
• Actuate the reset button ( 2 , Fig. 5.20), to reset the
thermal cut out and the motorised 2 port valve.
a
Caution!
Risk of damage!
If the immersion heater is not connected, you
must connect the earth wire to terminal E on
the terminal strip of the immersion heater.
You can find a wiring sheme on the inside of the
cylinder cover.
5.8.3 Combination options of the control
components
Boiler used
eBUS-capable boiler, such as the Vaillant ecoTEC, or a
boiler which is not eBUS-capable, such as the Vaillant
turboMAX or ecoMAX, or appliances which are not
eBUS-capable from third-party manufacturers.
Wiring
Wiring via the Control Center VR 65 as system solution
which allows Vaillant low-voltage eBUS controllers to be
used in the English market with valves and hot water
cylinders of the traditional 230 V range. Alternatively via
a standard wiring box.
Solar circuit control
Control of the solar circuit by means of the temperature
difference controlled auroMATIC 560 control set for
solar supported hot water supply.
Hot water reheating control
Control of the hot water heating by means of the
temperature difference controlled auroMATIC 560
control set for solar-supported hot water supply with
demand driven reheating function for Vaillant boilers.
Alternatively by means of a timer (from a third-party
manufacturer).
Control of the heating circuits
Control of the heating circuits can be via Vaillants range
of programmable room thermostats or weather compen-
sators when in conjunction with Vaillants range of ebus
capable boilers. Alternatively by means of approved in-
dustry standard controls as above.
An overview of the combination options of these control
components can be found in Table 5.7.
h Note!
The entire wiring must be performed in
accordance with BS 7671: Requirements for
Electrical Installations (IEE Wiring Regulations,
16th or 17th edition).
An additional terminal strip is required to wire
the connections A, B, C, D for the connection of
the solar pump, solar control and solar pump
thermal cut out at the cylinder (see wiring
schemes 1 - 5).
Installation 5