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1. General
This user's guide is meant for the installer and if necessary
for the user. It's a reference to operation and installation
of the SWH-LT heater.
1.1. Description
The SWH-LT is an effective in-direct fired heater. The heat
exchanger consist of copper tubes and aluminium fins.
This is an approved design for an optimal heat exchange.
The grille has been designed to accomplish an optimal air
displacement at the lowest possible sound level.
With a 5-stage switch is it possible to reduce the air
output and noise level.
1.2. Function
The SWH-LT is essentially a radiator with a fan on the back.
When hot water is pumped through the radiator, and the
supply air fan is on, the heater will blow hot air.
The heater will give no heat when the supply air fan is
off, irrespective if there is hot water running through the
radiator.
The heater requires a control (thermostat) to operate the
supply of hot water and to switch the supply air fan on/
off.
There are several options for control, this will be described
later in this manual.
Model
Maximum heat output @ 45/35OC
Maximum cooling output @ 7/12OC
Maximum cooling output @ 15/18OC
Maximum cooling output @ 16/19OC
Air volume
Throw
Electrical supply
Rated power
Electrical current
Sound level @ 5m
Weight (incl water)
Water connection
Water coil pressure drop
Minimum suspension height
Table 1 - Technical data
For a good air distribution it's always better to choose 2 or
more heaters instead of a single heater. For example, it's
better to select two 30kW heaters, instead of one 60kW
heater.
1.3. Matching capacity of hot water boiler and SWH-LT
In case the capacity of the boiler is higher than that of the
SWH-LT, the boiler won't be able to release all the heat
produced.
This will cause the boiler to go on and off. As a conse-
quence of this the installation won't be able to reach the
temperature demanded. For small installations it is advis-
able to select a SWH-LT which has an higher output than
the boiler itself.
1.4 Guarantee
Operation and /or installation of appliances not in accord-
ance with this manual will invalidate guarantee.
2 Technical
2.1 Technical data
The SWH-LT has 4 versions that, in addition to heating via
a central heating boiler, are specially intended for heat-
ing use in a low-temperature installation. In addition, this
SWH-LT version can also be used used for cooling via a
heat pump or cooling pump.
See table2, for dimensions
SPECIFICATION GUIDE - SWH-LT Series
SWH110-LT
kW
8.3
kW
6.6
kW
3.8
kW
3.4
m
/h
1850
3
Horizontal m
14
Vertical
m
5
V
W
118
A
1.1
dB(A)
35-54
kg
23
¾"
kPa
4
m
SWH220-LT
SWH330-LT
19.4
28.6
16.5
19.2
8.8
12.8
7.9
11.7
4150
5450
21
20
7
7
230V 1 Phase N & E - 50Hz
515
320
2.3
1.5
35-64
35-60
34
66
1"
11
30
2.5
SWH340-LT
37.9
32.1
17.8
16.1
8850
25
8
718
3.2
35-62
68
30
3
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