OXA-K — Hot water heating and cooling

Hot water heating and cooling (OXA-K). The all-year option: it runs off the boiler house or district heating in winter and off a chiller in summer, holding the indoor climate steady at the lowest running cost. A perimeter coil, an integral droplet eliminator and a drain pan with gravity condensate discharge.

Features

• 🔥 Hot water heating from a boiler house, district heating or a heat pump
• ❄️ Chilled water cooling from a chiller (7/12, 8/14, 10/16 °C)
• 🧩 Perimeter coil layout — dry, stable operation in cooling mode
• 💧 Droplet eliminator, drain pan and gravity condensate discharge with no pumps
• 🛡️ Fan Stop Status — no dripping when the fan comes to rest
• 🌀 Belimo-actuated blades, EBM-papst fan, VAV control

Technical data

Model	OXA-K-I	OXA-K-II
Fan speed, rpm	0~900	0~860
Recirculated 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	4~15	4~23
Control mode	Stepless VAV control
Sound level, dB	<60	<60

Dimensions and drawings

Dimension, mm	OXA-K-I	OXA-K-II
A	900	1100
B	1250	1442
C	735	920
E	100	100
F	95	95
G	480	568
H	765	935
J	660	789
K	890	1032
L	1050	1292
M (female thread)	DN40	DN50
N (male thread, condensate)	DN25	DN32
Weight, kg	160	227
Water volume, l	10.0	13.2

Heating performance

Water temperature, °C	Model	Q, kW (10 °C)	Q, kW (15 °C)	Q, kW (20 °C)
90/70	K-I	88	—	—
80/60	K-I	76	68	61
70/50	K-I	62	55	48
60/40	K-I	47	39	30
90/70	K-II	144	138	125
80/60	K-II	140	128	116
70/50	K-II	134	119	105
60/40	K-II	106	92	75

A dash means the supply air temperature would exceed the 60 °C maximum; operation in that mode is not permitted.

Cooling performance (chilled water 7/12 °C)

tal, °C	rh, %	Model	Q, kW	ts, °C	mc, l/h
24	50	K-I	24	14	/
26	50	K-I	35	14	9.1
26	70	K-I	55	15	40.6
28	70	K-I	65	15.5	50.9
24	50	K-II	38	14	0.1
26	50	K-II	57	13.5	18.2
26	70	K-II	89	14	66.7
28	70	K-II	104	14.5	83.1

Legend: t_al — inlet air temperature · rh — inlet relative humidity · Q — cooling capacity · t_s — supply air temperature · m_c — condensate flow. Maximum working pressure 800 kPa. Full tables for 8/14 and 10/16 °C are in the PDF catalogue.

Non-standard versions (explosion-proof, anti-corrosion, air purification, increased cooling capacity) are available on request.