©
EUROHEAT
DISTRIBUTORS (H.B.S) LTD. Aug 2006
Instructions Part number IN1016 Ed G
16
TTB
Thermocouple TTB Flue Spillage Sensor.
Commissioning
a)
Carry out a gas leak test as regulations require.
b)
Ensure that all openable doors and windows in the room are shut, light the stove and operate
on maximum for five minutes. Position a smoke match just beside the thermocouple TTB (see
diagram) and check that all the smoke is drawn into the opening to the flue diverter.
IF SPILLAGE IS STILL OBSERVED, THERE MAY BE A PROBLEM WITH THE FLUE SYSTEM OR
CHIMNEY, DISCONNECT THE APPLIANCE UNTIL THE PROBLEM HAS BEEN IDENTIFIED.
TTB
The TTB is a thermocouple interrupter (switch) which when it exceeds its predetermined temperature
will break the thermocouple circuit switching off the gas to the pilot assembly. The TTB acts as a flue
spillage detector. This detector responds very quickly to flue spillage with in 1-2 minutes.
Note:
If there are any extractor fans in the room or adjacent rooms, these must be running at maximum
setting with all interconnecting doors left open, and the spillage test repeated.
c)
Carry out a gas operating pressure test. Attach a manometer to the operating pressure
test nipple. With the appliance operating at maximum, observe the operating pressure. Adjust if
required.
d)
Carry out a low burn operating pressure test. Attach a manometer to the operating pressure
test nipple. Turn the gas valve control knob to the minimum flame size. Observe the operating
pressure.
e)
Carry out a gas supply pressure test with the appliance operating. Attach a manometer to the
supply pressure test nipple. If the pressure is below requirements inspect gas pipe installation for
possible problems.
