GB-5
D
GB
F
NL
I
E
Connecting the air line on
ZT 40../00
▷
▷
In the air connection there is an integrated air
nozzle with an Rp 1/4" connection for air supply
pressures ≥ 10 mbar.
▷
▷
For air supply pressures ≤ 10 mbar, unscrew the
air nozzle from the air connection and screw the
air line directly into the air connection (Rp 1/4").
▷
▷
For adjusting to air supply pressures
≥
10 mbar,
we recommend fitting an adjusting cock with
R 1/4 connection upstream of the air nozzle,
e.g. GEH 8.
▷
▷
In the case of air supply pressures > 800 mbar, we
recommend additionally inserting an air restrictor
orifice upstream of the adjusting cock – see page
9 (Accessories).
Wiring
DANGER
Electric shocks can be fatal! Before working on
possible live components, ensure the unit is discon-
nected from the power supply.
Control valve
▷
▷
A solenoid valve VG 6 can be used as an ad-
ditional safety valve.
▷
▷
Use copper cable with a suitable cross-section
for transferring the thermo-electric voltage and
for grounding – see page 9 (Accessories).
Cable length
Cable
cross-section
Diameter
3 m
6 mm
2
2.9 mm
▷
▷
ZTA: the grounding cable and thermo-cable are
already fitted on the pilot burner.
Connect thermo-cable and grounding cable.
▷
▷
M
= grounding cable connection,
T
= thermo-
cable connection.
ZT
S11T
T
M
N
L1
TZI
VG
ST..S
Connect the cables from the ignition transformer
switch to the ignition transformer in accordance
with local regulations.
ZT
S11T..S
T
M
N
L1
T
VG
TZI
BN 2
BK 4
1 BU
black
blue
Pilot burner
▷
▷
Wire the ignition cable as shown in the connection
diagrams of the ignition transformer.
▷
▷
Length of ignition cable:
max. 5 m (15 ft),
< 1 m (40 inch) recommended.
For permanent ignition max. 1 m (40 inch).
▷
▷
Lay the ignition cable individually and not in a
metal conduit.
▷
▷
ZTI 55: install the ignition cable separately from
the ionization cable.
Remove the plug cap from the burner.
Screw the ignition cable securely into the plug
cap.
▷
▷
For the ignition cable, use an unscreened high-
voltage cable – see page 9 (High-voltage cable):
Replace the plug cap.
