Operation and Maintenance Manual, OnyX Sky Heat Recovery Units, 2022/01
Frapol Sp. z o.o. reserves the right to introduce changes without any prior notice.
Page
14
3.6
Efficiency of the heat recovery system and electric power consumption
The temperature efficiency of heat recovery in the HRU OnyX series was determined on the basis of laboratory tests
under the following operating conditions:
- HRS temperature efficiency 1
Fresh air parameters: 7°C, 50%
Exhaust air parameters 20°C, 40%
- HRS temperature efficiency 2
Fresh air parameters: 0°C, 50%
Exhaust air parameters 20°C, 40%
Standard operating mode (anti-freeze system deactivated), with balanced and adjusted ventilation system (fresh air
flow rate = exhaust air flow rate) and clean air filters. The electrical power consumption is determined for the static
pressure of 100 Pa.
NOTE
The manufacturer is not responsible for reduced heat recovery efficiency resulting from improper operation
and imbalance of the ventilation system.
3.6.1
OnyX Sky 250
3.6.2
OnyX Sky 500
0
20
40
60
80
100
120
140
70,0
80,0
90,0
100,0
0
50
100
150
200
250
300
Po
w
er
con
su
m
p
tio
n
[W]
H
RS t
em
p
era
tu
re
e
ff
ici
en
cy
[
%
]
Air flow [m3/h]
HRS temperature efficiency 1
HRS temperature efficiency 2
0
50
100
150
200
250
70,0
80,0
90,0
100,0
0
100
200
300
400
500
Po
w
er
con
su
m
p
tio
n
[W]
H
RS t
em
p
era
tu
re
e
ff
ici
en
cy
[
%
]
Air flow [m3/h]
HRS temperature efficiency 1
HRS temperature efficiency 2
