Technical data

53
11.0 Commissioning
© Baxi Heating UK Ltd 2012
11.3 Commissioning of Controls (cont)
d) DHW set point for thermostat control.
Remember: Make sure the user DHW setpoint on the THINK
Controller is equal to or greater than the set point on the
thermostat at the cylinder.
If this procedure is not performed the recovery time of the DHW
maybe be increased unacceptably.
e) Time Program Setting
Please refer to the User’s Operating Instructions Section 5 (CH)
and Section 6 (DHW).
f) Chimney Sweep - Checking the gas rates - see Section 11.5.
g) Deaeration function
If during commissioning repeated E164 and E274 errors occur
which will stop the appliance from running, (see section 17 fault
finding) it may be useful to run the Deaeration function. This will
run the pump and exercise the system valves to help purge the
air from the system.
• To activate this function from the standard screen: -
• Press and hold both the easy menu and menu buttons until
chimney sweep function appears.
• Deaeration function will appear shortly afterwards.
• Scroll down and press to select.
• ‘312: Deaeration function’ will appear and last for 4
1
/
2
mins.
This action can be used repeatedly until the 164 and 274 errors
are removed. However if the problem persists check to see if
shut off valves, pump valves, wiring etc are correct.
h) Central Heating - Optimum start activation
The engine and supplementary burners are fired so that the
property is up to the set room temperature at the programme
On time.
• To activate the function press the ‘Menu’ button to enter the
programming menu.
• Press and hold ‘Easy Menu’ and ‘Menu’ button together untill
the access level menu appears (>8sec).
• Select ‘Commissioning’.
• Select ‘Temps/mode CH1’.
• Press Selector Button to confirm.
• Select ‘Optimum start control max’ (P 790).
• Press Selector Button.
• Change the values to the desired time.
• Press Selector Button to confirm.
• Press ‘Menu’ button to escape to the normal operating screen.
i) System Frost protection
An outdoor sensor must be fitted to activate system frost
protection.
• To activate the function press the ‘Menu’ button to enter the
programming menu - ‘Information’ appears.
• Press and hold ‘Easy Menu’ and ‘Menu’ button together until
the access level menu appears (>8sec).
• Select ‘Commissioning’.
• Select ‘Configuration’.
• Select ‘System frost protection’ (P 6120).
• Press Selector Button.
• Select ‘On’.
• Press Selector Button to confirm.
• Press ‘Menu’ to escape to normal operating screen.
Remember: The function is most likely to activate the pump
during the night. Pump activation at less than 1.5° C.