14 I Commissioning & Warranty details
5 Commissioning
5.1 Before commissioning
NOTICE:
Do not start the appliance without water!
3
Only operate the appliance once it has been
filled with potable water.
• Ensure the cylinder is filled with water.
• Check all connections for water tightness.
• Check the electrical connections.
5.2 Commissioning process
• Bleed pump according to the process in the pump manual.
• Ensure all isolation valves are open.
• Open the hot tap at the furthest point and allow air to bleed
out until a consistent flow of water is achieved.
• If a thermostatic mixing valve or a tempering valve is
attached, set it to the correct temperature.
5.2.1 Commissioning Process - Alphastat Plus
Your AlphaStatPlus has a microprocessor at its core that
intelligently and automatically controls your hot water system
at greater efficiency. The AlphaStatPlus measures the cylinder
water temperature and turns on the pump at the optimum time.
Principle of operation.
The hot water tank sensor is called: ‘TANK’
The upper temperature threshold is called:
‘SET OFF’ (typically 65° C)
The lower temperature threshold is called:
‘SET ON’ (typically 60° C)
AlphaStatPlus Display Panel Description.
• The ‘PWR’ light on indicates that power is being applied to
the AlphastatPlus.
• ‘TANK’, ‘SET OFF’ and ‘SET ON’ lights will be on to indicate
which temperature is being displayed. Only 1 of the 3 can
be on at a time.
• The ‘HWC’ light will be on when the hot water circuit (HWC)
pump is on.
• The ‘AWAY’ light flashes to indicate that the user has placed
the controller in a suspended state. No power will be applied
to the HWC until the ‘AWAY’ button is pressed again to cancel
it. The AlphaStat will remember the ‘AWAY’ mode even if the
power goes off and comes on again.
• The ‘NEXT’ button will step from Tank to Set Off to Set On
and the display will show the relevant temperature in
o
C.
If the Tank sensor is below -20
o
C the display reads ‘Lo’. If
the Tank sensor is above 140
o
C the display reads ‘Hi’. If the
sensor is outside the specified temperature range of -40
o
C
to 150
o
C then the Display will read ‘SSd’ and the ‘NEXT’
button is disabled.
• ‘SET OFF’ and ‘SET ON’ temperatures may be changed
while they are displayed, by pressing the buttons marked
with ‘+’ and ‘-’ in yellow (‘HWC’ and ‘AWAY’). The limits are
20
o
C and 75
o
C, but note that the ‘SET OFF’ temperature
will always be higher than the ‘SET ON’ temperature. If
sixty seconds pass and no buttons have been pressed, the
display reverts to ‘TANK’.
AlphaStatPlus System Adjustable Values.
Installer to fill in at installation time or after any change in
program Adjustable Values.
System Adjustable Values
Function
AlphaStat-Plus-1
Factory Value
Installation Values
Set Off
50
o
C
o
C
Set On
35
o
C
o
C
Demand
60
o
C
o
C
Biosafe
60
o
C
o
C
AlphaStatPlus Programming
If the adjustable values from the factory are inappropriate for
the installation (see included document stating programmed
values) then the unit needs to be reprogrammed.
Once new values are ‘stored’ they are permanently written into
memory and will be retained even when power is removed.
