Danfoss SonoHCA Operating guide

Operating Guide

SonoHCA

Fastening parts and mounting accessories

Operating Guide SonoHCA - Fastening parts and mounting accessories

Table of Contents

1. Allocator Installation
Position – Standard
Installation

1 Allocator Installation Position – Standard Installation .......................................................... 2

2 Wall Mounting ............................................................................................................................. 4

3 Installation of Fastening Parts Kits ........................................................................................... 5

3.1 Installation to Sectional Radiator, direct mounting ................................................................................ 5

3.2 Sectional Radiator, wall mounting ................................................................................................................ 5

3.3 Installation on Folded Radiator ...................................................................................................................... 6

3.4 Folded Radiator, wall mounting ..................................................................................................................... 6

3.5 Installation to Panel Type Radiator ............................................................................................................... 7

3.6 Mounting of heat cost allocators with glue ............................................................................................... 8

3.7 Panel Type Radiator, wall mounting ............................................................................................................. 9

3.8 Installation to Panel-Type Radiator with Front Convection Plate ...................................................... 10

3.9 Bathroom radiator – Towel rails ..................................................................................................................... 10

3.10 Sectional Radiator wide .................................................................................................................................... 11

4 Overview mounting accessories ............................................................................................... 12

The installation position on the radiator is directly related to the type of radiator, its heating power
and the heat cost allocator. To guarantee the correct data collection, the heat cost allocators must be
installed and used in a certain position in accordance with requirements.
The radiator’s heat is transmitted directly via the installation back plate to the device’s temperature
sensor or to its remote sensor

• The SonoHCA heat cost allocator is always installed in the centre of the overall length (0.5 x BL)

of the radiator, at a height of ¾ of the overall height (0.75 x BH) measured from the bottom.

• If the height of the radiator is less than (<) 470 mm, the heat cost allocator must be installed at
50% BH.

2 | AQ353735633516en-010101 © Danfoss | 2020.09

Operating Guide SonoHCA - Fastening parts and mounting accessories

1. Allocator Installation
Position – Standard
Installation (continuous)

• If the height of the radiator is less than (<) 470 mm, the heat cost allocator must be installed at
50% BH.

General notes:

• The spacing for welding the M3 threaded bolts must be 5 cm. Before welding, the lacquer has
to be removed from the welding points. It must be ensured that the bolts are welded onto a
water-bearing area or a flute.

• Only use M3 bolts with a maximum length of 8 mm or there is a risk that the device will be
damaged.

• Welding to aluminium radiators is not permitted.

• If the radiator has an even number of sections the heat cost allocator should be installed
between the middle sections.

• If the radiator has an uneven number of sections the device should be installed next to the
valve-sided middle section.

• Mount the back plate through the 2 oval holes, adjusted to the top edge of the holes.

AQ353735633516en-010101 | 3© Danfoss | 2020.09

Operating Guide SonoHCA - Fastening parts and mounting accessories

2. Wall Mounting

The heat cost allocator has to be wall-mounted if the overall height of the radiator is less than 250 mm
or if, for aesthetical reasons, the heat cost allocator cannot be mounted directly onto the radiator.

In this case, the heat cost allocator is wall-mounted on the side opposite to the valve and at a
minimum distance from the radiator of 10 cm.

at least
10 cm

088H2424

088H2345

088H2420

088H2423

at least
10 cm

• After marking and drilling the holes, the aluminium profile is fastened with 2 metal screws and
2 spring washer.

• The parts necessary for the wall-mounting are included in the corresponding fastening-parts
kits for the installation of the remote sensor.

• After installation of the device to the wall and the sensor to the radiator, the sensor cable is laid
in a cable duct.

• Mount the back plate through the 2 oval holes adjusted to the top edge of the 2 oval holes.

Mounting Accessories Code No.

2 plastic dowels Ø 5 mm 3.25 088H2424
1 aluminium back plate (supplied with SonoHCA) 088H2345
2 spring washers 088H2420
2 oval head wood screws 3 x 35 088H2423

4 | AQ353735633516en-010101 © Danfoss | 2020.09