REMEHA Gas 460 S Technical Instructions page 10

Normal operating cycle
Operating cycle on safety (start up without flame signal)
Required input signals
Box output signals
Thermostatic request at 2nd stage
Operation 2nd stage
A Start of operation
B Formation of flame in ignition burner
BR1 1st stage
BR2 2nd stage
SF Burner flame signal
TA Ignition transformer
TCH1 Boiler thermostat 1 Speed
TCH2 Boiler thermostat 2 Speed
VA Safety lockout warning light
VG Ignition burner valve + Safety valve VS
ts Safety time: maximum 10 seconds
tstab Flame stabilisation time: 5 seconds
tvz Pre-ignition time: 10 seconds
tw Waiting time: 0 seconds
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Remeha Gas 460 S 06/02/06 - 300005247-001-B