Multi
MAXX
HG
Specifications
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
11
2.3
Functional description of the unit
Die gas-unit heaters Multi
MAXX
HG are produced in 2 model sizes with 2 capacity
sizes each for wall or ceiling mounting. The basis of the unit is formed by a heat
exchanger with a robust combustion chamber and integrated retractions, assuring an
optimal heat transfer between the combustion chamber and the air to be warmed.
The heat exchanger is installed in a thin-walled high temperature-resistant steel casing
(RAL 7000).
The 4 M8 rivet nuts on each side of the fan module are for mounting the unit on the
ceiling or wall.
The back side of the unit is furnished with a 2-speed axial AC or EC fan with integrated
contact protection grille. The thermal contact is guided out and wired to the terminal
box. A flange can be mounted on the fan module of the unit, which permits the connec-
tion of air-side accessories.
An air outlet is mounted on the discharge side of the unit, ensuring the regulation of the
air direction and air throw of the warmed air compared to the position of the unit in the
room. The outlet is made of several selectable types (see unit type code on page 3)
The warming of the heat exchanger is ensured by a fully automatic Premix burner. The
burner can process the following gases: natural gas, propane-butane gas, only pro-
pane and only butane.
2.4
Operating conditions
Operating temperature
0°C to +40°C
Operating voltage
3 x 400 V, or 1 x 230 V~ 50 Hz
Protection class
IP 40 as per EN 60 529
Fan power consumption
see unit identification plate
Class of the gas burner:
I
2R
- natural gas (NG)
I
3R
- propane-butane (PB), propane (P),
butane (B)
Class NO
X
:
see Tab. 2-2
Variant types of the exhaust installation: B
23,
C
53
, C
13
, C
23 ,
C
33
(as per EN 1020)
Gas burner input pressure of the heating medium:
- natural gas 2 ±0.2 kPa
- propane/butane 3 ±0.3 kPa
Max. power consumption:
ca. 150 W (see unit plate)
Operating voltage:
1 x 230 V~ 50Hz
The unit heaters Multi
MAXX
may only be operated under the conditions (apart from
temperature) described in Chapter 3.3.
For the operation of the Multi
MAXX
heating units, sufficient air ventilation of the area
must be ensured without fail.
NOTE!
All other important data on dimensions, weights, connections, sound power etc. are
provided in the "Data and Facts about the Multi
MAXX
HG Unit Heater".
Unit type
Concentration NO
X
Class NO
X
ppm
mg/kWh
mg/m
3
HG 24
15 - 22
28 - 40
28 - 41
5
HG 25
20 - 22
36 - 40
38 - 41
5
HG 44
25 - 27
45 - 50
47 - 53
5
HG 45
25 - 40
45 -71
47 - 75
4
Tab. 2-2: Specification of the NO
X
class
