SATK40 & Procyl
®
5
Electrical Connections
Connecting to the storage cylinder ancillary equipment
When a hot water storage cylinder is used it will require
ancillary control/safety equipment which will require wiring
externally to the electricity connection box (15).
The hot water timer (17), cylinder temperature controller (high
limit thermostat (18) and temperature control thermostat (19))
and the motorised valve must be wired from the electricity
supply connection terminal (11) to the storage cylinder
connection (14) in series as shown in Electrical Wiring on page
12.
First Operation
Filling the central heating system
Open the isolation valves on the connections to the centralised
boiler plant to fill and pressurise the system to the design
pressure.
Once completed, vent the system and check the system
pressure again, repeat the filling process if necessary.
Filling the secondary circuit
The SATK40 HIU is fitted with a filling loop complete with
double check valve and isolation valves.
The first time the system is filled, or for re-pressurising
following a heating circuit pressure switch fault indication,
restore the system pressure (1.2 to 2 bar) by opening the cock
(A) and monitoring the value using the pressure gauge (B).
Once the correct pressure has been reached, close the cock (A),
vent the system and check its pressure again, repeat the filling
process if necessary.
Fitting the cover
Place the casing over the frame, inserting the upper tabs (1)
into the corresponding slots (2).
Place the lower part of the casing over the frame.
Tighten the screws (3).
NOTE:
For UK markets, a filling loop is supplied in lieu of the
back-flow preventer.
System start-up
Before switching on the HIU, visually check all joints are water
tight and the electric wiring is complete and correct. After
finishing the check, activate the electric supply to the HIU and
check for the presence of any error signals.
If any error signals are indicated, eliminate the faults indicated,
setting the domestic water temperature and the heating
controller to the desired temperatures and times. Check that
the operating cycles are correct.
Once the HIU is hydraulically filled (primary and secondary),
the HIU should be left permanently connected to the mains
supply and switched on. This allows the unit to operate its
pump anti-clog protocol.
Electronic Controller
Operating Principle
All heating and domestic hot water functions offered by
SATK40 are controlled by a digital controller.
There are a number of specific DIP SWITCHES on the
controller circuit board; the way these are configured will
determine the settings of the various models and the optional
functions enabled.
Automatic Controller Functions
Reset mixing/modulating valve to zero
Immediately after the power supply has been switched on,
the position of the installed mixing/modulating valve is reset
to zero.
6 5 4
2
3
1
A
B
3
2
1
