CIAT Xenea 20H - Operating Limits

HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 12.692 A
XENEA
4
Indoor packaged air-to-water heat pump
OPERATING LIMITS
Water return temperature (P281)
External temperature (P250)
55°C
30°C
25°C
-20°C 0°C +5°C
Mix of pure water + anti-
freeze fluid (example:
40% MPG)
Pure water
Minimum water return temperature during operation:
+ 10°C pure water/+5°C glycol/water mix
Maximum water return temperature: + 55°C
WATER FLOW RATES AND HYDRAULIC CONNECTIONS TO OBSERVE
System water flow rates and piping diameters*
Xenea
Minimum flow rate
(m
3
/h)
Nominal flow rate
(m
3
/h)
hot water production
Copper pipe hydraulic
connection
Steel pipe hydraulic
connection
PE (polyethylene) pipe
hydraulic connection
20 H 0,75 1,1 28x1 33/42 - DN32 1’’ 1/4 32x2.9
28 H 0,75 1,45 28x1 33/42 - DN32 1’’ 1/4 32x2.9
35 H(T) 1,05 1,75 32x1 33/42 - DN32 1’’ 1/4 32x2.9
* Minimum diameters calculated for a hydraulic connection for your machine 15 m away from its connection to the system.
AVAILABLE PRESSURE IN SYSTEM
The available pressure curves are given for pure water.
Subtract 5 kPa from the available pressures in the case of systems using 40% monopropylene glycol (heating mode).
70
60
50
40
30
20
10
0
0,5 1 1,5 2
70
60
50
40
30
20
10
0
1,0 1,5
2
2,5
3
XENEA 20H - 28H
XENEA 35 H (T)
Available static pressure (kPa)
Available static pressure (kPa)
water flow rate (m
3
/h) water flow rate (m
3
/h)
+45°C