Key Features; Technical Description - Imi Heimeier Multibox 4 Rtl Bedienungsanleitung

IMI HEIMEIER / Floor Heating Control / Multibox 4
Multibox 4
RTL and K-RTL
Multibox 4 RTL and K-RTL is used for decentralized control of
underfloor heating. Due to the additional supply shut-off heating
surfaces can be locked individually.

Key features

>
Additional supply pipe shut-off
with vent valve
>
Cover with concealed screw
connection

Technical description

Applications:
Floor heating systems, wall heating
systems, combined floor/radiator heating
systems
Functions:
Multibox 4 RTL:
Maximum limitation of the return
temperature,
Presetting,
Shut-off,
Venting
Multibox 4 K-RTL:
Individual room temperature control,
Maximum limitation of the return
temperature,
Presetting (V-exact II),
Shut-off,
Venting
All Multibox 4 models are equipped with
an additional supply shut-off incl. vent
valve. Heating surfaces can be shut-off
individually.
2
>
For out-of-true installation
offsetting up to 6° on each side
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Adjustable fitting for all wall
structures, 30 mm depth
compensation
Dimensions:
Valve body DN 15.
The flush box has an overall depth of
60 mm.
Flexible mounting thanks to variable
spacing between flush box and cover of
up to 30 mm.
The cover can compensate for slanted
mounting of the flush box of up to
6° on each side.
See also Dimensions.
Pressure class:
PN 10
Setting range:
Thermostatic head K: 6 °C to 28 °C
Return temperature limiter RTL: 0 °C to 50 °C
Temperature:
Max. working temperature: 90°C
Min. working temperature: 2°C
For all Multibox models, ensure that the
system supply temperature is suitable for
setting up the floor heating system.
See also Information!
Material:
Valve body: Corrosion resistant Gunmetal
O-rings: EPDM rubber
Valve disc: EPDM rubber
Return spring: Stainless steel
Valve insert: Brass, PPS (polyphenylsulphide)
Spindle: Niro-steel spindle with double
O-ring sealing. The outer O-ring can be
replaced under pressure.
Plastic parts of ABS and PA.
Sensor element: Thermostatic head K
with liquid filled sensor.
Return temperature limiter (RTL) filled with
an expansible medium.
Surface treatment:
All models optionally with cover and
visible graduation cap in white RAL 9016
or chrome-plated.
Marking:
THE, flow direction arrows.
Pipe connection:
Pipe-side G 3/4 adaptor with cone
suitable for compression fittings for
plastic, copper, precision steel and
multi-layer pipe.