OXA-FK — Fresh air with cooling

Cooling and fresh air mixing series (OXA-FK). A ceiling unit of the lift-and-lower type covering both heating and cooling, with supply air on top. It combines a dual-duty water coil, a droplet eliminator with drain pan, and a modulating damper for 100 % supply air, automatic mixing or full recirculation.

Features

• 🌬️ Three modes: 100 % supply air · automatic mixing · full recirculation
• 🔥 Hot water heating · ❄️ chilled water cooling (7/12, 8/14, 10/16 °C)
• 💧 Droplet eliminator and drain pan
• ⬇️ Lift-and-lower design — straightforward servicing at height
• 📶 VAV control, OXA-V / V2 terminal, OXA-T2 sensors, Modbus RTU

Technical data

Model	OXA-FK-I	OXA-FK-II
Fan speed, rpm	0~900	0~860
Supply air flow, m³/h	0~6900	0~10,100
Voltage, V	380±5%	380±5%
Electrical power, kW	0~0.85	0~1.80
Current, A	0~1.65	0~3.60
Recommended mounting height, m	4~13	4~21
Control mode	Stepless VAV control
Sound level, dB	<60	<60

Dimensions and drawings

Dimension, mm	OXA-FK-I	OXA-FK-II
A	900	1100
B	1590	1897
C	735	920
D	1230	1442
E	100	100
G	480	568
H	765	935
J	180	220
K	230	240
L	160	260
M (female thread)	DN40	DN50
N (male thread, condensate)	DN25	DN32
Q	505	605
R	445	545
Weight, kg	183	266
Water volume, l	5.8	9.8

Heating performance

Water temperature, °C	Model	Q, kW (10 °C)	Q, kW (15 °C)	Q, kW (20 °C)
90/70	FK-I	70	64	58
80/60	FK-I	61	54	49
70/50	FK-I	50	44	38
90/70	FK-II	115	110	100
80/60	FK-II	112	102	93
70/50	FK-II	107	95	84

Cooling performance (7/12 °C)

tal, °C	rh, %	Model	Q, kW	ts, °C	mc, l/h
24	50	FK-I	19	18.0	/
26	50	FK-I	28	18.0	7.5
26	70	FK-I	44	19.0	32.2
28	70	FK-I	52	19.5	40.9
24	50	FK-II	30	18.0	1.6
26	50	FK-II	46	17.5	15.4
26	70	FK-II	71	18.0	52.8
28	70	FK-II	83	19.0	65.3

Legend: t_al — inlet air temperature · rh — relative humidity · Q — cooling capacity · t_s — supply air temperature · m_c — condensate flow. Maximum working pressure 800 kPa · max. supply air temperature 60 °C.