Lennox COMFAIR HH 10, Application Manual

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• 8 •
10 20 30 40 50 60 70
175 225 275 325 375 825 1400
1,3 1,1 1 1 1 1 1
1300 1850 2275 2700 3150 6900 11575
70,8 71,9 70 69,9 70,1 70,4 70,3
10 20 30 40 50 60 70
75 125 150 200 225 600 1025
1,2 1 1,3 1 1,2 1,1 1
575 1050 1100 1650 1725 4900 8450
68,5 69,7 70 69,2 69,6 70,7 70,2
10 20 30 40 50 60 70
1
2
3 100 100
4 - - - - -
1
2
3 90 85
4 - - - - -
Application Guide • COMFAIR HH-AGU-1107-E
Data indicated as min., med., max. concern the 3 standard speeds set at the factory. Upon customer request other 3 speeds among the 6 speeds available can be
connected.
NOTE: The symbol (-) means that for HH30 to HH70, only 3 fan speeds are available. For HH10 and HH20, upon customer request other 3 speeds among the 4 available
speeds can be connected.
WORKING LIMITS - HH
Maximum entering water temperature: 70°C Maximum entering air temperature: 40°C
Minimum entering water temperature: +4°C Minimum entering air temperature: +4°C
Maximum working pressure: 8 Bar
WATER FLOW AND PRESSURE DROP LIMITS, 3R COIL (HH10 TO HH50)
AND 4R COIL (HH60 AND HH70)
WATER FLOW AND PRESSURE DROP LIMITS, 1 ROW COIL (HH10 TO
HH50) AND 2R COIL (HH60 AND HH70)
Data given for medium water temperature at 9,5°C
3 WAYS VALVE
Using of 2 or 3 ways valves is compulsory when the unit is used for cooling to avoid condensate in the external structure (bearing
structure and cabinet). As alternative install a regulating system to stop coil water entering when the fan is off.
When the units is connected with ducts fan air fl ow is reduced due to the ducting pressure drops.
With very high pressure drops fancoil air fl ow becomes too low and electric motor which is connected to the fan can be damaged. For
this reason we recommand static pressures lower than the maximum limit static pressures indicated in the schedule.
NOTE: When the fancoil is operating with the maximum operating indicated static pressure value, air fl ow is half in comparison with
the unit without ducts at the same working speed. Defi nitively the static presure limit corresponds to the back pressure ables to half
fancoil air fl ow (as a consequence the fancoil unit performances like heating & cooling capacity, will be reduced of about 50%).
MAXIMUM FAN STATIC PRESSURE
Data given for medium water temperature at 65°C
COMFAIR HH
Minimal water fl ow l/h
Minimal water pressure drop kPa
Maximal water fl ow l/h
maximal water pressure drop kPa
COMFAIR HH
Minimal water fl ow l/h
Minimal water pressure drop kPa
Maximal water fl ow l/h
maximal water pressure drop kPa
COMFAIR HH
2 pipes system
Pa 90 min 80 min 115 min 105 min 135 min 220 min 220 min
Pa 95 med 95 med 130 med 130 med 180 med 240 med 240 med
Pa 135 max 135 max 205 max 260 max 260 max
Pa 105 max 105 max
4 pipes system
Pa 75 min 70 min 95 min 90 min 110 min 180 min 180 min
Pa 85 med 80 med 115 med 115 med 155 med 210 med 210 med
Pa 120 max 120 max 180 max 220 max 220 max
Pa 95 max 90 max