Schwank novoSchwank D 20S U Technical Manual page 28

Radiant tube heater
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novoSchwank shape U
Note the following points while installing the
gas-pipe-system:
 Use only gas lines as per national standards.
 Never hang heaters on the gas pipes.
 Mount a manual gas cock upstream of every
radiant tube.
 Close all gas cocks before carrying out the
leak test and disconnect the connection
between the gas cock and the burner to
avoid damages to the gas regulator and gas
combination valve.
 Clean gas pipes before the installation of the
heater. Reconnection after pressure control
and expansion.
Please observe the national standards.
Connect the heater with an approved
flexible hose!
 Use the following hose length for
infraSchwank D / calorSchwank D shape U
20S U – 35S U
R ½"
45S U – 55S U
R ¾"
 Mount a flexible hose only with 90° bend or
with 2 x 90° elbow fittings in a 180° bend
according to Fig 25, 26 and 27.
 Keep the specified installation dimensions.
 Incorrect mounting of flexible hoses shown in
Fig 28 [sketches
430 mm
[+/- 10%]
Fig. 25: Standard connection [vertical] 90° bend
28
length
Article no.
800 mm
19208450
length
Article no.
800 mm
19208460
to
].
430 mm
[+/- 10%]
Fig. 26: Sideways connection 90° bend
Fig. 27: Alternative flexible hose 180° -bend with 2 x 90° elbow
Fig. 28: Incorrect mounting of flexible hoses

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