Imi Heimeier Multibox 4 RTL Bedienungsanleitung Seite 22

EN
Multibox 4 RTL Flush mounting return temperature limiting for floor heating with return temperature limiter RTL
Installation and operating
instructions
Legend
� Mounting rail  Outer wall layer
� Flush casing � Finished floor upper surface
� Shutoff/control spindle  Cover plate
� Air venting valve  Screws 4.2 x 50
� Locking screw 4.2 x 19  Frame
 Return temperature limiter RTL
� Supply connection with shut-off
Installation information
Multibox 4 RTL valve is to be connected in the return
flow at the end of the floor heating circuit �. Note flow
direction (illustr. 2).
It has to be taken into account that the supply temperature
used is suitable for the construction of the floor heating.
The floor heating pipe should be laid in a spiral form in the
flooring (illustr.2).
The distance from the lower edge of the flush casing to the
finished floor should be at least 200 mm (illustr.3).
Installation
Flush casing
Place the flush casing � vertically in the wall slot provided
(width at least 144 mm, depth at least 60 mm) and fix with
the mounting rails (illustr. 3). By means of the variable
cover, consisting of cover plate  and frame  (illustr. 4),
the distance between the front edge of the flush casing and
finished wall can be 0 to 30 mm. Recommended distance
approx. 20 mm. Align flush casing to the position required
below the finished wall:
– Determine thickness of the outer wall layer (plaster, tiles,
gypsum plaster board etc.)  (illustr. 3).
– Loosen locking screw �.
– Align front edge of the flush casing to the position required
below the finished wall.
– Tighten up locking screw � again.
Pipe connection
Use only original HEIMEIER compression fittings for the
connection of plastic, copper, precision steel or multi-layer
pipe. Compression ring, compression ring nut and hose nozzle
are marked with dimensional information and with THE. When
metallically sealing compression fittings are used with copper
or precision steel pipe, with a pipe wall thickness of 0.8 – 1.0
mm, use supporting sleeves for the additional stabilisation of
the pipe. Cut the pipes to be connected into sections at right
angle to the pipe axis. The pipe ends must be perfectly round,
free of burrs and undamaged.
After connecting the pipe fit the protection cover in the flush
casing.
Return temperature limiter RTL
Take off the protection cover after completion of the structural
work. Place the return temperature limiter  on the valve body,
screw up and tighten with rubber jawed wrench (approx. 20 Nm).
Make sure that the setting arrow point upwards. Afterwards set
the return temperature limiter RTL to the required number.
Frame and cover plate
Put frame  on flush casing �, align them and fasten with the
screws  enclosed. Afterwards put on the cover plate  and
press it until it clicks into place (illustr. 4).
Shutoff and presetting
The return is closed by turning the shutoff/control spindle �
to the right with an SW 5 hexagon key. The planned pre-
setting can be made by turning it to the left afterward.
For specifications/diagrams see "Multibox" brochure. The
supply is closed by turning the shut-off spindle in the supply
connection �.
1
Adjustment 1 2 14
6
Return temperature limiter RTL
Number
0 1 2
Return temperature [° C]
0 10 20 30 40
– Recommendation: set the hidden restriction or locking
of the required return temperature. See the leaflet
Installation and Operating Instructions (with thermostatic
head K operation).
– Make sure that the setting is not lower than the ambient
temperature of the RTL since then it will no longer open.
Functional heating
Carry out functional heating at the heating mark conforming to
standards in keeping with EN 1264-4.
Earliest start for functional heating:
– Cement floor: 21 days after laying
– Anhydrite floor: 7 days after laying
Begin at supply temperature of 20°C - 25°C and maintain for
3 days. Then adjust maximum design temperature and
maintain for 4 days. The supply temperature can be regulated
by controlling the boiler. Open the valve by turning the
protection cap to the left. Refer to the information of the cement
floor manufacturer!
Do not exceed maximum cement floor temperature at the
heating pipes:
– Cement and anhydrite floor: 55 °C
– Poured asphalt floor: 45°C
– in line with particulars of the cement floor manufacturer!
Technical changes must be taken into account.
2 3 4 5
16 20 24 28
3 4 5
50
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