Carrier Idrofan 42NL Installation, Operating And Maintenance Instruction page 10

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)
10
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
17c Airflow adjustment screw
18 Coil protective caps removal
18a Protective caps (factory fitted)
/h)
3