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
38
5.8
Electric heater.
The heater has double protection against overheating, which allows the power supply to be cut off in the case of
overheating risk. One of the protections can be deleted manually. During installation, note the direction of the air flow
through the heater, which must be in accordance with the markings on its housing. Failure to do so may result in heater
overheating, as the temperature limiter will not activate. Connect electrical wires via rubber glands to the terminal strip
of the heater
according to the wiring diagram supplied with the heater. Special attention must be paid to the correct
connection of the protective conductor. The heater must be connected by a qualified electrician
in accordance with the
technical documentation and the applicable regulations. The heater wiring must be performed in such a way so that it
can be disconnected from the mains supply by means of contacts with a distance of at least 3 mm in each pole, via an
automatic switch or contactor. The connection of the electric heater to the mains must be confirmed by a report drawn
up after measuring the insulation of the supply cable and the electric shock protection. After switching off the heater,
the automation system must force the air supply fan to operate for a period that ensures the cooling of the heaters.
When installing the OnyX Sky 3000 unit, a minimum distance of 750mm should be kept between the preheater frame
and the connection stub (intake). When installing the OnyX Sky 1500 unit, the minimum required distance is 250mm.
5.8.1
External dimensions and technical data
•
Round electric heaters
•
Rectangulat electric heaters
Code
Dimensions [mm]
Intended use
Dn
L
A
B
H
NE-B-1x230-Plus-One-NI-4-1-DW-315-400-Onyx
315
410
295
160
410
OnyX Sky 1500
B1
H1
B2
H2
L
NE-B-3x400-Plus-One-NI-6-1-760-360-550-K-O-P
760
360
810
410
655
OnyX Sky 3000
•
Specifications
Code
Power
[kW]
V
max
[m
3
/h]
V
min
[m
3
/h]
Power
Supply
[VAC]
Current
(±5%)
[A]
Intended use
NE-B-1x230-Plus-One-NI-4-1-DW-315-400-Onyx
4
1500
420
230
17,4
OnyX Sky 1500
NE-B-3x400-Plus-One-NI-6-1-760-360-550-K-O-P
6
2700
1020
400
8,66
OnyX Sky 3000
NOTE
Before installing the device, it is necessary to select appropriate fasteners, taking into account the current
provisions of the building law.
