©
EUROHEAT
DISTRIBUTORS (H.B.S) LTD. June 2009
E & OE Instructions Part Number IN1113 Ed. E
20
Thermocouple TTB Flue Spillage Sensor.
Commissioning
a)
Carry out a gas tightness 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, DISCONNECT THE APPLIANCE
UNTIL THE PROBLEM HAS BEEN IDENTIFIED.
TTB
The TTB is a thermocouple interrupter (switch) which when it exceeds its pre-determined 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 within 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 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. See page 18.
d)
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. See page 18.
e)
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. See page 18.
TTB flue
spillage sensor
