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.
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37
5.6.12
Replacing parts or components
Replacing fuses
NOTE
Replac
ing overcurrent protections built into the device should be performed in consultation with the
manufacturer.
Use the mains fuses 230 V, delayed action fuses, or porcelain fuses 5x20 mm. The fuses in the output circuits of fans and
heaters should be selected according to the loads present in the network. By default, fuse F1 (power supply input of the
controller and ground-air heat exchanger outputs SBP1, SBP2) is 6.3 A. It is permissible to use a smaller fuse if the total
load of these circuits is lower.
The table below shows approximate rating values for a fuse, depending on the load.
Load
[W]
Fuse rating
[A]
300
1.00
380
1.25
480
1.60
580
2.00
730
2.50
920
3.15
1000
4.00
Replacing the control panel
NOTE
When replacing the control panel, ensure that its software is compatible with the software in the controller
module.
5.6.13
Record of modifications
NOTE
The manufacturer reserves the right to introduce improvements and modifications to the products.
5.7
Drainage of condensate
During assembly, pay attention to the position of the
drain connector that evacuates condensate from the drip
tray. The unit’s position should ensure free access to the
drain connector, enabling trap and drainage hose
installation while ensuring the correct angle. As
standard, the HRU is equipped with an automatic drain
trap, which does not require periodic pouring with
water.
NOTE
Failure to properly trap the condensate drained from the device will result in the sucking in of air from
the sewage system and will prevent the proper draining of the condensate from the HRU. This can lead
to the overfilling of the drip tray and damage to the unit.
Drainage
Float ball trap
(standard accessory)
