1
1
2
2
3
3
4
4
5
5
6
6
A
A
B
B
C
C
D
D
Kró
ć
ce
Marcin Lipka
10.01.2022
Zaprojektowany przez
Sprawdzony prze
Zatwierdzony przez
Data
1 / 1
Wydanie
Arkusz
Data
13
1
131
15
8,
5
149
160
4x
560
55
0
18
10
0,
5
EXHAUST
SUPPLY
EXTRACT
OUTDOOR
HRU-MinistAIR-...-L
ALNOR
®
ventilation systems
is a legally protected trademark and technical patent. All rights reserved.
44
w
w
w
.al
nor
.c
om.
pl
User Manual
HRU-MinistAIR
Fig. 14 - Dimensions of connector pipes for installation considering the space for insulation on the LEFT
4.5 Duct installation
1. Usually you will connect your ducting directly to HRU Ø160 connectors
Although HRU-MinistAIR has very low Sound power level in some cases it is recommended to install
additional silencers (on supply and extract sides) to provide high level of acoustic comfort.
Description of connections:
SUPPLY – warm fresh air incoming to house
EXHAUST – cool stale air exhausted to outside
EXTRACT – warm stale air extracted from house
OUTDOOR – cool fresh air taken from outdoor
2. If you want use different duct connectors it is possible to unmount NSL male connectors and easily install
replacement fittings (for example elbow, offset bend, etc.). NSL connector are snap-on mounted, to
unmount them you need to pull them up using a some force.
Optional fittings connected to HRU must be in male-ended according to ALNOR’s dimension standards
(see our SPIRAL® catalogue with dimension tolerances). To provide the best tightness we suggest to use
ALNOR’s products with gasket. We are not responsible for tightness if fitting are purchased from other
companies..
3. The heat recovery unit is designed symmetrically, which makes it possible to operate in two configurations.
- The left side - the supply fan is located on the left side of the unit.
- The right side - the supply fan is located on the right side of the unit.
The configuration can be selected before purchasing the unit.
