Tightness Test; Wiring - ermaf GP 14 ACU Betriebsanleitung

Connecting the gas supply
▷ If the heater is suspended on chains, use an
approved flexible gas hose.
1 Disconnect the system from the electrical power
supply.
2 Shut off the gas supply.
3 Remove the sealing plug at the inlet tube of the
gas combination control CG.
F F
O N /
O
T E
S E R
E
D O M
4 Connect the gas pipe with threaded connec-
tion (R ¾" external thread) or gas hose, see
page 20 (Accessories), to the inlet tube of
the gas combination control.
▷ Use approved sealing material only.
▷ Note the maximum inlet pressure, see page 23
(Technical data).

Tightness test

1 Disconnect the system from the electrical power
supply. The mains plug may only be pulled out
once the device has been switched off.
▷ The valves are closed when de-energized.
2 Open the cover of the ACU.
▷ To do so, turn the cross-head screw anti-clock-
wise several turns so that it can be lifted.
3 Open the test point for p
4 Connect a pressure gauge to test point p
GP_14_ACU_NF.indd 3
on the CG.
u
.
u
GB-3
p
G
5 Switch on the power supply.
6 Release the gas supply.
▷ Inlet pressure p
= 70 mbar.
u max.
7 Shut off the gas supply.
8 Check the gas pressure on the pressure gauge.
▷ The pressure must not drop.

Wiring

CAUTION
Danger of electric shocks!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
1 Disconnect the system from the electrical power
supply. The mains plug may only be pulled out
once the device has been switched off.
2 Shut off the gas supply.
3 Open the housing cover of the ACU.
▷ To do so, turn the cross-head screw anti-clock-
wise several turns so that it can be lifted.
4 Open the cover of the burner control unit.
p
U
11.09.20 20:55