Planning and installation instructions
24
E E EKSH26P
DAIKIN Solar P-SYS
008.1629544_01 – 12/2016
5
x
Start-up and taking out of operation
5
Start-up and taking out of operation
5.1
Start-up
Instructions for integration in the hydraulic system, start-up, oper-
ation of the control systems and the rectification of faults and mal-
functions are contained in the installation and operating instruc-
tions of the storage tanks, the DSR1 pressurised solar control
unit and the EKSRDS2A pressure station.
The following points must be carried out during the initial start-up
after all components have been installed:
1. Determining, checking and setting the required inlet pressure
for the diaphragm expansion vessel in the depressurised
condition (see Tab. 5-1 Inlet pressure MAG)
2. Fill the system with
CORACON
solar system fluid according
to the operating instructions of the DAIKIN EKSRDS2A solar
pressure station. The pressure at the initial filling must be
5 bar to ensure that all connections are properly mounted.
The maximum system pressure p
e
must not be exceeded
(see Tab. 5-1 Maximum system pressure).
3. Venting the system (operating instructions of the DAIKIN
EKSRDS2A solar pressure station).
4. Check all connection points and joints of the solar system
circuit for leaks.
5. Then determine and set the system pressure in accordance
with Tab. 5-1.
5.2
Taking out of operation
5.2.1 Temporary shutdown
The DAIKIN solar system can be temporarily shut down by dis-
connecting the mains plug from the power supply.
If there is a danger of frost:
– put the DAIKIN solar system back into operation
or
– apply suitable antifreeze measures to the connected heat-
ing system and hot water storage tank (e.g. draining).
5.2.2 Final shutdown
●
Take the DAIKIN solar system out of operation (see
chapter 5.2.1 "Temporary shutdown").
●
Disconnect the DAIKIN solar system from all electrical and
water connections.
WARNING!
The solar system cannot be started until all
hydraulic and electrical connections have been
completed.
An incorrect start-up will adversely affect the
function and may damage the complete system.
Installation and start-up must therefore must
conducted by DAIKIN-authorised and trained
heating experts.
Before start-up, the protective conductor re-
sistance and proper connection must be
checked.
Inlet pressure
MAG
System
pressure
Maximum
system
pressure
System fill
pressure
p
v
= 0.1 x h
stat
+ 0.5 bar
p
0
= p
v
+
0.3 bar
p
e
≤
0.9 x p
sv
(5.4 bar)
5 bar
p
e
Maximum permitted system pressure (warm) in bar
p
sv
Operating pressure of safety valve = 6 bar
p
v
Inlet pressure MAG in bar (
at least 1.2 bar)
p
0
System filling pressure (cold) in bar
h
stat
Static height in m between the centre of MAG and the highest
point of the system
Tab. 5-1 Calculating pressures for start-up
WARNING!
Danger of scalding from hot solar system fluid
and escaping steam.
●
Only fill the solar panel circuit with the solar
panels covered.
CAUTION!
A heating system which is shut down can freeze
in the event of frost and may suffer damage.
●
Drain the shut-down heating system if there
is a danger of frost (does not apply to the
frost-protected solar system circuit).
CAUTION!
Pumps switched off for a lengthy period can
seize.
For temporarily shut-down solar systems, the
protective function against seizing pumps
(pump kick function) is also deactivated.
●
When restarting, check the pump is working
correctly. In most cases, seized pumps can
be freed again manually.
If there is a risk of frost for a few days only, the excellent
heat insulation of the DAIKIN hot water tank means that
it need not be drained as long as the storage tank tem-
perature is observed regularly and not permitted to fall
below +3 °C. This does not, however, provide any protection
against frost for the connected heat distribution system.
