25
INSTALLATION
IMAX XTRA EL
-
Installation & Servicing
24 IMAX XTRA EL USER INTERFACE - ADVANCED OPERATING INSTRUCTIONS CONTINUED....
ENABLING VALVE POWER OPEN/VALVE POWER CLOSED/SHUNT PUMP
The boiler default setting is that the CH Pump output will only be On for a
CH Demand and the DHW Pump output will only be on for a DHW Demand.
This can be changed so that the CH Pump output controls the system pump
and the DHW Pump output operates a Valve (power open or power shut)
This can also be changed so that the CH Pump output controls a system
pump and the DHW Pump output controls a shunt pump.
Press SELECT and then hold + and - down together for more than 5s, the
following screen will be displayed (Installer mode is not permanently on).
Installer Mode
Normal Operation
Set Flow Temp’
Set DHW Temp’
Rotate the KNOB clockwise until the following screen is displayed
Installer Mode
Set Night Setback
DHW Pump/Valve
Set Booster
CH/DHW Priority
Press SELECT and the following screen will be displayed
DHW Pump/Valve
Pump
Valve Power Open
Press - for more
Press + and - to change to the required setting and then press ENTER
to store.
Rotate the KNOB anti-clockwise until Normal Operation is highlighted
again and press SELECT to return to normal operation.
continued . . . . . . . .
ENABLING NIGHT SETBACK
Note- Night Setback is only operational if Outside Sensor has been connected
When Night Setback is enabled the boiler will run at the normal flow temp.
during CH Demand and reduced temperature when no demand.
Press SELECT and then hold + and - down together for more than 5s, the
following screen will be displayed
Installer Mode
Normal Operation
Set Flow Temp’
Set DHW Temp’
Rotate the KNOB clockwise until the following screen is displayed
Installer Mode
Set to 0-10V Input
Set Night Setback
DHW Pump / Valve
Set Booster
Press SELECT and the following screen will be displayed
Set Night Setback
On
Off
Press + and - to change to required setting and then press ENTER to store
Rotate the KNOB anti-clockwise until Normal Operation is highlighted
again and press SELECT to return to normal operation.
Installer Mode
Normal Operation
Set Flow Temp’
Set DHW Temp’
DHW BOOSTER FUNCTION
Note- Booster Function is only operational if Outside Sensor has been
connected.
If Booster function is enabled and CH Demand is ongoing for more than
10 minutes then the Flow Temp. target is increased by 10°C
When the Burner switches off the temperature is reset.
Press SELECT and then hold + and - down together for more than 5s,
the following screen will be displayed
Rotate the KNOB clockwise until the following screen is displayed
Installer Mode
DHW Pump / Valve
Set Booster
CH/DHW Priority
Set Max Flow Temp’
Press SELECT and the following screen will be displayed
Set Booster
On
Off
Press + and - to change to required setting then press ENTER to store
Rotate the KNOB anti-clockwise until Normal Operation is highlighted
again and press SELECT to return to normal operation.
CHANGING 2ND SWITCHED LIVE INPUT BETWEEN DHW & CH
Installer Mode
Normal Operation
Set Stat 1 Temp
Set Stat 2 Temp
To change the 2nd switched live input from DHW operation (factory
default) to CH operation, press SELECT and then hold + and - down
together for more than 5s and the following screen will be displayed:
Rotate the 1st stat clockwise until the following screen is displayed
Installer Mode
Set Booster
2nd SL DHW / CH
CH / DHW Priority
Set Max Flow Temp’
Press SELECT and the following screen will be displayed
2nd SL DHW / CH
DHW
CH2, Priority = SL2
CH2, Priority = SL1
Press + and - to change to the required setting and then press
ENTER to store.
Rotate the KNOB clockwise until Normal Operation is highlighted
again and press SELECT to return to normal operation.
INST
ALLA
TION