Mixergy MDC0014-02 Installation and operation manual
Installation and commissioning
instructions
MDC0014-02
For Mixergy PV switch
2
About this module
Technical data
Supported (input) diverter(s) 1
Supported immersion rating 230-240 V~ 2.7-3.0 kW
Supported immersion specication
Max. idle consumption (12V)
Max. active consumption (12V)
EN 60335-2-73
250 mW
1500 mW
Supported (output) immersion(s) 1
The Mixergy PV switch is an intermediary relay device which allows
for external 3rd party PV diverters to be integrated with the Mixergy
cylinder and share use of the primary immersion.
Under idle conditions, control of the immersion is given to the PV
diverter. Whenever the Mixergy controller calls for heat through the
immersion via. boost or a scheduled heating event, control of the
immersion is switched away from the PV diverter and given to the
Mixergy controller.
For all queries, please contact us:
Tel: 01865 884343
Email: enquiries@mixergy.co.uk
4
Included items
Installation: general guidelines
• MAS0086-01 PV ready switch box complete
• MEL0049 2m pump cable extension
• 2x MME0077 Screw No 8 x 13mm Self Drilling
• 2x MME0152 Plastic spacer
• Installation guide
Ensure that all mains cabling used has a minimum CSA of 1.5 mm
with a minimum temperature rating of 90C (H05V2V2-F).
underneath water pipework.
plastic spacers. In the case of a wall-mount, the immersion cable will
extension has a minimum IP41 rating and is appropriately rated to
handle 240V~ 13A continuous.
ENSURE ALL ELECTRICAL SUPPLIES ARE SWITCHED
OFF BEFORE MAKING ANY CONNECTION TO
THE UNIT. ELECTRICAL INSTALLATION MUST BE
CARRIED OUT BY COMPETENT ELECTRICIAN
AND BE IN ACCORDANCE WITH THE LATEST I.E.E.
REGULATIONS.
5
Installation: mechanical
1. Remove the front cover of the PV switch.
2. Mount the PV switch either to the side wall of the cylinder (using
the included self-drilling screws) or to a nearby wall (using the
included plastic spacers).
3. Remove the cover/cap on the primary immersion heater.
Disconnect the Mixergy controller’s immersion supply cable from
the immersion’s terminals.
1
33 (SLIM)
2
6
4. Wire the Mixergy controller’s immersion supply cable into the
terminals MXL(L), MXN(N), GND(E) on the PV switch. This
cable can be extended using minimum 1.5mmCSA 3-core
5. Wire the external diverter’s immersion supply cable into the ter-
minals PVL(L), PVN(N), GND(E) on the PV switch.
6. Wire an appropriate length of minimum 1.5mmCSA 3-core
GND(E) to the cylinder’s primary immersion heater terminals L,
N, E.
Installation: electrical
7
Installation: electrical
7. Remove the Mixergy cylinder controller's top cover by unscrewing
the screws shown below and pulling the cover away.
8. Unplug the pump from the cylinder controller.
9. Plug the pump cable into either pump port on the PV switch.
10. Plug the included pump extension lead from the second pump
port on the PV switch to the pump port on the cylinder controller.
11.
or the thermostat is being replaced, ensure that the thermostat
12. Replace immersion cover, PV switch cover and cylinder controller
cover.
77 (alt)
8
Installation: commissioning
1. Restore power to external diverter and Mixergy controller
2. Cancel and scheduled heating events/boosts from the Mixergy
controller (if active).
3. Set the PV diverter to bypass/boost and check that the immersion
is heating via the diverter.
4. Set the Mixergy controller heat source to electric and boost using
the gauge, observe that the bypass/boost function of the diverter
controller supply.
5. Set the exchanger circulator pump speed to setting II for heat
pumps, I for solar thermal.
Troubleshooting
Diverter not working correctly
If the diverter is unable to supply heat to the cylinder, perform the
following checks:
• Check that the cylinder is not entirely full of hot water (i.e. 100%
charged). If the cylinder is full of hot water, drain the cylinder
down 20-30% and repeat the commissioning steps.
•
maximum set temperature.
• Check that the diverter is setup correctly according to
manufacturer's instructions.
RCD tripping
If an RCD is tripping when the cylinder is switched on, double check all
mains wiring to the PV switch, diverter and cylinder immersion.
Electrical fault
If an electrical fault of the controller is suspected or the electrical
system does not operate as expected, please contact Mixergy directly.
9
Replacement parts
Do not attempt to repair or replace any parts of the Mixergy
cylinder unless you are a trained operative.
If you suspect a fault or a replacement part is needed, please
contact Mixergy directly.
Part description Part no.
PV Switch PCBA MAS0085
PV Switch enclosure lid MME0144
Pump cable extension MAS0090
For more information on our
hot water tanks,
visit us at mixergy.co.uk
email us at enquiries@mixergy.co.uk
or call us on 01865 884 343
Mixergy Ltd, 2 Canal View, Wharf Farm,
Eynsham Road, Cassington, Oxfordshire OX29 4DB
T: 01865 884 343 | www.mixergy.co.uk
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