Carbolite PTC 12/20/150 - Manual (Page 9)

PTC
MF11 – 3.08 9
4.8 Setting the Timer Mode
Scroll to tm.OP; use  or  to view and alter the mode. The mode shows as OPt.1 to OPt.5.
It is not possible to alter the mode while the timer is running; if the mode cannot be altered, scroll
to the
StAt parameter and set its value to OFF .
4.9 Setting the Time Period
Method 1
Scroll to tmr (time remaining). Use  or  to view the remaining time; the units are always in
minutes. Use  and  to set or alter the time. Setting tmr automatically activates the timer; the
m-A parameter changes to Auto and the StAt parameter changes to run.
Note that the tmr display shows 0 (zero) during the last minute of timing, and also shows 0 when
the time has expired. The timer light indicates whether timing is still in progress.
Method 2
Scroll to dwEl , and use and  to set the timing duration. The advantage of method 2 is that
dwEl need only be set once if repeated use of the same time period is required.
Scroll to StAt , and use  or  to set the parameter value to run . This copies the dwell time into
tmr and activates the timer as in method 1.
4.10 Running with the Timer
Once the timer is activated by method 1 or 2 above, the control sequence depends on the timer
ode, as previously given in the table. Fig 3 gives another representation of the timer action.