
AIR
LOW
TEMPERATURE
HIGH
TEMPERATURE
BOILER
CHAIN
DOOR
a
b
COAL
c
Regulus RT4 Draft Regulator
is a chain-operated regulator of combustion air for operation with solid-fuel-fired heat sources
Technical Data:
Regulation range: 30-90 °C
Max. water temperature: 120 °C
Max. ambient temperature: 60 °C
Max. load on the chain: 100-1000 g
Working position: horizontal, vertical
Regulator installation:
Screw the regulator with its 3/4" outer thread into the boiler socket with
3/4" inner thread. Seal the thread (e.g. with Siseal sealant, Teflon tape…).
Turn the regulator so that for horizontal installation (a) the protrusion for
bar placing pinpoints downwards, for vertical installation (b) it pinpoints to
the front and for horizontal side installation (c) it pinpoints upwards.
Remove the plastic transport tube and insert the hole-free end of the
hexagonal lever in its place. Tighten the screw in order to fix the lever in
such a position that its free end is above the fixture on the boiler door and
the lever is as close to the
horizontal position as
possible (as much the
hexagon allows).
Attach the chain to the
lever opening by means of
the bigger hook fixed to the chain. Pass the other chain
end through the fixture on the boiler door and fix this
free end on the hanging chain. Check if the chain is
hanging freely and the lever moves freely (when turning
the knob).
If the regulator is installed in the (a) position, the white
scale applies. For installations in the (b) and (c)
positions, the red scale applies.
Regulator calibration:
Fire the boiler with door manually open. Set the
regulator knob to 60. When the water temperature
reaches 60 °C, let it stabilize for a couple minutes and
then adjust the chain fixture so that the door gap is
about 1-2 mm. Now you can select the desired
temperature. If the real boiler temperature was lower
during stable operation than set, shorten the chain, if the
real temperature was higher than set, extend the chain.
Please take into account also other factors that could
influence the temperature inside the boiler disregarded
of the regulator - esp. the quantity of fuel and ashes
inside the boiler, position of the secondary-air damper,
thermal lag of the boiler and of the whole heating plant.
WARRANTY TERMS
1. Warranty period is 24 months from the date of sale of either the regulator or a boiler, if the product
was supplied with a boiler.
2. Warranty becomes void in case that technical conditions set by manufacturer were not maintained.
3. Warranty
does not cover mechanical damage to the regulator.
REGULUS spol. s r.o. , Do Koutů 1897/3
CZECH REPUBLIC
www. regulus.eu
sales@regulus.eu