Daikin EKSRPS4AB [18/44] X start up and decommissioning
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Daikin EKSRPS4AB [18/44] X start up and decommissioning

Daikin EKSRPS4AB [18/44] X start up and decommissioning
Operating and installation instructions
18
Daikin EKSRPS4
Daikin Control and pump unit for solar systems
008.1624644 – 08/2015
5 x Start-up and decommissioning
5 Start-up and decommissioning
5.1 Start-up
All the following work must be carried out in the specified se-
quence.
1. Filling the storage cylinder:
● Filling the heat exchanger for domestic water.
● Fill the buffer storage volume via the filling and draining
cock (KFE BA) on the EKSRPS4 Control and pump unit
for solar systems until water comes out of the safety
overflow.
● Close the filling and draining cock (KFE BA).
2. Switch on the solar R4 control system.
The initialisation phase starts.
3. When the initialisation phase is finished (temperature
display), fill and vent the solar system by simultaneously
pressing both arrow keys (starting manual mode).
The solar operating pump P
S
now runs at full power and
the solar system is exposed to the maximum possible
operating pressure. The solar system fills, the air escapes
through the flow line into the air compartment of the stor-
age tank.
4. Check the entire system for leaky joints (in the building and
on the roof). Seal any leaks that occur in a professional
manner.
5. Switch off the solar R4 control system.
6. Check the filling level in the hot water storage tank.
7. Adjusting the filling time:
● Switch the Solar R4 control unit on again (initialisation
phase starts).
● When the initialising phase is finished (temperature
display), you can start the manual operating mode by
simultaneously pressing both arrow keys.
● Measure the time it takes to fill the solar system
completely. The system is fully filled when you can no
longer hear any air noises and a steady value for the flow
rate is displayed (activate the measuring point "Flow rate"
using the arrow keys).
● Set the measured time plus 20 s at the parameter "Time
P2" (see section 6.3.6).
8. Switch the Solar R4 control unit back to automatic operation
either by simultaneously pressing both arrow keys or by
switching the unit off/on.
The solar system is now ready for operation.
9. Only when connecting a Control and pump unit for solar
systems EKSRPS4 to several solar storage tanks:
– The entire flow rate, measured with the FlowSensor in the
solar flow line, must be distributed evenly to all the con-
nected solar storage tanks. We recommend using a Flow-
Guard (FLG) at each storage tank for regulation pur-
poses.
10. Instruct the user, fill out the acceptance report, and send it to
the address indicated on the rear cover of this manual.
WARNING!
The solar system cannot be started until all hydraulic
and electrical connections have been completed.
Incorrect commissioning will impair the system's
function, and can lead to damage to the entire instal-
lation. Installation and start-up must therefore must
conducted by Daikin-authorised and trained heating
experts.
The protective conductor resistance and correct wiring
must be checked before start-up.
CAUTION!
Commissioning in frosty conditions can result in
damage to the entire heating system.
● Commissioning at outdoor temperatures below
0°C only with a guaranteed water temperature of
at least 5°C in the solar circuit (e.g. prior heating of
the hot water storage tank).
Daikin recommends that you avoid operating the
system in extremely frosty conditions.
UK only!
CAUTION!
If filling or topping up the storage tank is done by
means of the boiler filling and drain valve, a temporary
filling loop must be used with the appropriate backflow
prevention device in accordance with clause G24.2,
Guidance to the Water Supply (Water Fittings)
Regulations 1999.
Domestic hot water quality must be according to EU
directive 98/83 EC and country-specified regulati-
ons.
Within a few minutes after switching off and emptying of
the solar system, the fill level indicator in the hot water
storage tank once again reach almost to the fill level.
– The reason for a slightly lower fill level is the remain-
ing of a small volume of water in the lower collection
pipes in the panels. If the solar panels are correctly
aligned, this volume of water is not dangerous for
the panel, even under the effects of frost, since
there is adequate space for expansion.
– If the fill level remains considerably below the fill
level, this can be an indication of undiscovered
leaks or faulty line routing (water pockets). In this
case you must undertake a very careful check of the
system again.
The correct flow rate in the solar circuit is set automati-
cally by regulating the speed of the solar operation
pump P
S
.

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