HAMWORTHY HEATING LTD
8
CHESIL-ELECTRONIC
500001181/K
6.3 Electrical connection
Wiring diagrams for the units can be found in
appendix A1. All wiring to the pressurisation unit
must be in accordance with the IEE regulations,
and any local regulations which apply.
Note!
If in
any doubt a qualified electrician should be
consulted.
6.3.1 Mains Connection
Units are supplied fitted with a 1m flying lead for
connection to the mains supply. Mains connection
must be via a fused isolator rated at 13 Amps and
positioned locally to the unit.
6.4 Electrical Connection To The User
Terminals (see Fig A1)
Terminals 1 to 3
are Low Pressure Alarm volt
free relay - 1 Normally Open, 2 Common and 3
Normally Closed. Suitable for up to 230V 0.5A
connection.
Terminals 4 to 6
are High Pressure Alarm volt free
relay - 4 Normally Open, 5 Common, 6 Normally
Closed. Suitable for up to 230V 0.5A connection.
Terminals 7 to 9
are General Alarm volt free relay
- 7 Normally Open, 8 Common 9 Normally Closed.
Suitable for up to 230V 0.5A connection.
Terminals 10 to 12
are for mains power coming
into power electronics - 10 Live (11 Earth) & 12
Neutral connection. Supply to be 230V single
phase 50Hz.
6.5 Operation of the Controller
Once wired, cover closed, and cable fitted to
pressure sensor, the unit is ready for operation.
When the mains supply is switched on the unit
becomes operational with factory settings applying.
After a few seconds the unit will become
operational and will start the pump(s) until pre-set
pressure has been achieved or until an alarm is
displayed (other than Low Pressure Alarm). Please
note, however, there is a fill function in the
Maintenance menu designed to bring the system
up to pre-set pressure which will ignore counters
such as volume of water introduced, pump cycle
count, hours run meter etc. See Maintenance
menu for more information.
Once system is in normal operation mode the word
‘AUTO’ appears, to indicate that the unit is in
working mode. The display will always revert to this
unless it is in alarm condition.
6.6 Trouble Shooting
In the event of the unit not coming on when mains
is applied, then please return the unit to HHL for
full investigation.
Once powered up, the unit will become operational.
Again, if the unit is not operating as you believe it
should, then please contact HHL Technical
Department for further assistance.
6.7 Standard Menu Display
By pressing the up and down keys you can scroll up
and down the standard menu in the order detailed
below. All items in menu are view only, except for
COLDFILLPRES which can be altered by user
between 0.7 Bar and 3.4 Bar in 0.1 Bar steps. By
altering the cold fill pressure, cut-in pressure and low
pressure alarm setting will move by same amount as
cold fill pressure is moved either up or down, unless
they hit their minimum. High pressure alarm setting
will move upwards once cold fill pressure is 0.2 Bar
below high pressure alarm, but will not move
downwards if cold fill pressure is brought down.
The structure of the standard menu is as follows and
can be scrolled through by using the up and down
keys:-
SYSTEM PRES X.X: This is current pressure reading
of system in Bar.
COLDFILLPRES X.X: This is the pump cut-out
pressure.
MAKE-UP V0 XXXX: This is volume of water
introduced into system in litres since the unit
was last reset.
MAKE-UP ALARM XX: This is alarm setting of
volume of water introduced since Make-up V2
was last reset in 10’s of litres (i.e. 23 would
mean 230 Litres).
MAKE-UP V2 XXX.X: This is volume of water
introduced into system in litres since make-up
V2 was last reset.
PUMP OPS XXXX: This is the total number of pump
cycles since pump ops was last reset.
PUMP1 HRS XX.XX: This is Pump 1 hours run since
Pump1 Hrs was last reset.
PUMP2 HRS XX.XX: This is Pump 2 hours run since
Pump 2 Hrs was last reset.
6.8 Maintenance Menu Display
This is obtained by pressing down the ‘up’ & ‘down’
arrows together for 5 seconds. The screen will
display either USER MENU ON or USER MENU OFF
depending on the previous menu setting.
Under Maintenance Menu you obtain access to
normal menu, plus added functions, with the facility to
make adjustments where appropriate. Structure of
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