21
7.
COMMISSIONING
CONTROLLER
7.1
I
NITIAL
S
ETTING
Arr 1
To set up the AST 100 Controller the following conditions must exist:-
1.
Mains lead connected to 220 - 240V fused 5 amp supply.
2.
Sensor S1 connected.
3.
Sensor S2 connected.
4.
Sensor S3 connected.
5.
Sensor S4 connected (option).
On power up the controller will go through an initialisation phase during
which the operating control light flashes red then green.
OTC FUNCTION
During commissioning the OTC function must be set to ON, this runs
the pump briefly to achieve accurate temperature detection.
SYSTEM Arr 1 or 2
The first time the controller is powered up the default setting will be for a
standard system (Arr 1).
Setting Arr 1 or Arr 2 determines which set of options are available on the
display - see tables 7.2 and 7.3.
Arr 1 or Arr 2 must be set on commissioning to suit the system
installed.
THE SETTING MUST NOT BE CHANGED THEREAFTER.
Arr 1
Arr 1 is used when only one cylinder heat exchanger coil is controlled
by the AST 100 Controller, i.e. solar system is circulated through the coil
by the solar pump controlled by R1 - see wiring diagram fig. 6.4A.
The cylinder may be a two coil cylinder or single coil buffer type, however
any components or system, other than the SOLARcomfort, connected to
the cylinder are NOT controlled by the AST 100.
Solar
Pump
Note To change the system settings
see 5.5.
F
IG
. 7.1
A
A
RR
1
IMPORTANT
IMPORTANT
