Test Instant For Mode 2: Testing After Burner Run - Honeywell TC Series Technical Information

Function

3 .2 .5 Test instant for Mode 2: testing after burner run

If the jumper is set to Mode 2, the tightness test after
burner run begins as soon as the burner is switched off.
To ensure that the valves are checked for tightness once
before starting up the system, the tightness test runs
when the mains voltage (L1) is applied. If the valves are
tight, the green OK LED lights up. The OK enable signal
is not forwarded to the automatic burner control unit
until the thermostat/start-up signal ϑ has been applied.
The tightness test after burner run starts when the
thermostat/start-up signal ϑ drops. The OK enable
signal is not forwarded to the automatic burner control
unit again until the thermostat/start-up signal ϑ has
been re-applied.
: "
Mode 1 2
t
p
V1 undicht
V2 undicht
TC · Edition 08.17
TEST"
L1 (+)
1
5 ϑ
TEST
OK
1
2
6
OK
7
L1 (+)
1
ϑ
5
TEST
OK
1
If the tightness control TC detects a leak on one of the
two valves, the red LED lights up for a fault on valve V1
or valve V2
1
t
e.g. by switching on a buzzer or a warning light.
p
V1 leaking
V2 leaking
t
. A fault is signalled externally
2
t
p
L1 (+)
1
ϑ
5
TEST
OK
1
2
6
OK
7
,
t
L1 (+)
1
5 ϑ
TEST
OK
1
2
6
OK
7
t
32