Connection Diagram For Tc 3; Finishing The Wiring; Tightness Test; Setting The Test Instant - Honeywell Kromschroder TC 1 Operating Instructions Manual

Connection diagram for TC 
▷ The tightness test is carried out with the auxiliary
valves installed on TC 3 (pre-wired). The terminals
for the valve inputs remain vacant.
Mains voltage and control voltage:
24 V DC/120 V AC/230 V AC
Mains voltage: 120 V AC/230 V AC,
control voltage: 24 V DC

Finishing the wiring

9

Tightness test

▷ All new connections between the valve and the
TC must be checked for tightness.
 Pressurize the system. Do not exceed the maxi-
mum inlet pressure.
 Soap off pipe connections.

Setting the test instant

▷ The test instant (MODE) can be set using two
DIP switches.
 Disconnect the unit from the electrical power
supply.
▷ Before opening the unit, the fitter should ground
himself.
t
 Unscrew the housing cover.
M
 Set the test instant to Mode 1, 2 or 3.
30s
25s
20s
15s
10s
▷ Mode 1: test before burner start-up with incom-
5s
ing thermostat/start-up signal ϑ (factory setting).
▷ Mode 2: test after burner run when the thermo-
stat/start-up signal ϑ drops and after switching
on the mains voltage.
▷ The tightness test also starts after a reset.
▷ Mode 3: test with incoming thermostat/start-up
signal ϑ before burner start-up and when the
thermostat/start-up signal ϑ drops after burner
run.
▷ Invalid switch setting: no function. The
is permanently red, see page 8 (Assistance
in the event of malfunction).
▷ Continue on page 7 (Setting measurement
time tM).
GB-6
t
M
30s
25s
20s
15s
10s
5s
Mode 1
Mode 2
Mode 3
Power
Mode 1
LED
1
2