Tc 4 In A Multiple Burner System With Two Auxiliary Valves For Supply And Discharge - Honeywell TC Series Technical Information

Application
1 .1 .10 TC 4 in a multiple burner system with two auxiliary
valves for supply and discharge
V1: any.
V2 and V3: quick opening, nominal size is dependent
on test volume V and inlet pressure p
P
(Project planning information), but is at least DN 15.
TC 4 checks the central shut-off valve V1, the auxiliary
valves V2 and V3, the burner valves and the pipe be-
tween these valves for tightness.
The test volume V is supplied via the auxiliary valve V3.
P
The external pressure switch DG monitors the pressure
between the gas solenoid valves V1, V2 and the burner
valves.
Once the tightness test has been carried out success-
fully, TC 4 opens gas solenoid valve V1. The TC forwards
the OK enable signal simultaneously to the automatic
burner control units for the burner valves. The burner
valves open and the burners start.
Thanks to the relief line and auxiliary valve V2, the test
volume V is discharged into a safe area or into the
P
combustion chamber.
TC · Edition 08.17
, see page 38
u
TC 4
PZ p
DG
u
2
V1
p
p
z
u
V
P
V3
TC 4
1 2 3 4 5 6 7 8 9 10 11 12 13
PZ
V2
OK
V1
V2
V3
L1(+)
N(-)
16