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Figure titles and legends:
1 Clearance in mm without rectangular flange inlet
2 Clearance in mm with rectangular flange inlet
3 Clearance in mm with small or large plenum
4 Electrical danger pictogram
5 Caution hand hazard pictogram
6 General danger pictogram
7 Lifting unit for installation in a false ceiling
8/9 Levelling the unit
10 Condensate drain pipe
10a
20 mm/m fall in horizontal pipe run
10b
50 mm siphon
11 Several units connected to one condensate collector
11a
20 mm/m fall
12 Fan assembly removal
12a
Removing fan access panel
12b
Position of torx screws
13 Electric heater removal
13a
Location of screw
14 Coil inlet/outlet positions, all sizes
1
Cooling water outlet (4 and 2-pipe coil)
2
Cooling water inlet (4 and 2-pipe coil)
3
Heating water outlet (4-pipe coil)
4
Heating water inlet (4-pipe coil)
5
Air vent
6
Water drain
7
Water outlet of 4w-v
8
Water inlet of 4w-v
9
Water outlet of 2w-v
10
Water outlet of 2w-v + B
2w-v
Two-way valve
2w-v+B
Two-way valve and balancing function
4w-v
Four-way valve (= Three-way valve with integral by-pass)
Connections for two-way valve with balancing function :
- Size 2 and 3 : 3/4’’ diameter
- Size 4 and 5 : 1’’ diameter
Connections for other valves and coils:
- Size 2, 3, 4 and 5 : 1/2’’ diameter
- Size 6 and 7 : 3/4’’ diameter
15 Meaning of wires - proportional valve actuator (not applicable for valves
with balancing functions)
15a
Black wire (230 V valve actuator), actuator rod rising
15b
Green wire (24 V valve actuator), actuator rod rising
15c
Brown wire, Actuator rod lowering
15d
Actuator rod in high position
15e
Actuator rod in low position
16 Waterflow adjustment of optional 2-way valve with balancing function
16a
Control knob removal
16b
Knurled nut untightening
16c
Waterflow adjustment (white knob)
16d
Knurled nut tightening in initial position
17 Optional airflow controller
17a
Air Damper
17b
Fresh airflow setting (in m
3
/h)
17c
Airflow adjustment screw
18 Coil protective caps removal
18a
Protective caps (factory fitted)
10
Summary of Contents for Idrofan 42NH
Page 2: ......
Page 6: ... 0 5 0 5 9a 9b L 11a 11a K 10a 10b M 12b 12a N 13a 13a 6 ...
Page 7: ...O Ø16 26 Ø16 4w v 2w v 2w v B 40 40 40 B B B G G G C C C C C H D I E J F F F F K 7 ...
Page 8: ...R BAS 60 50 75 100 70 80 90 DOWN 17a 17b 17c Q 16a 16b 16c 16d P 15a 15b 15d 15c 15e 8 ...
Page 9: ...S 18a 9 ...
Page 23: ......