Carrier Idrofan 42NL Bedienungsanleitung

Translation of the original document

DUCTED FAN COIL UNITS

42NL & 42NH

INSTALLATION, OPERATING AND

MAINTENANCE INSTRUCTIONS

CONTENTS

1 - PRECAUTIONS ...............................................................................................................................................11

1.1 - Operating limits ........................................................................................................................................... 11

1.2 - Clearances required.................................................................................................................................... 11

1.3 - Receiving a shipment - installation methods............................................................................................... 11

1.4 - Supply voltage.............................................................................................................................................12

2 - SAFETY CONSIDERATIONS ..........................................................................................................................13

2.1 - General........................................................................................................................................................13

2.2 - Protection against electrocution ..................................................................................................................13

2.3 - General installation conditions ....................................................................................................................13

2.4 - Caution for the control of the unit ................................................................................................................14

2.5 - Regulations .................................................................................................................................................14

3 - INSTALLATION OF THE UNIT ........................................................................................................................15

3.1 - Installing the unit in the false ceiling............................................................................................................15

3.2 - Installation procedure..................................................................................................................................15

3.3 - Removal procedure.....................................................................................................................................16

3.4 - Safety considerations relating to nal shut-down........................................................................................16

4 - COMPONENTS AND MAINTENANCE ...........................................................................................................17

4.1 - Fan motor assembly....................................................................................................................................17

4.2 - Drain pan removal ......................................................................................................................................18

4.3 - Water coil ....................................................................................................................................................18

4.4 - Duct connection spigots ..............................................................................................................................18

4.5 - Duct connection rectangular anges...........................................................................................................18

4.6 - Optional lter and lter access ....................................................................................................................19

4.7 - Fresh air controller ......................................................................................................................................19

4.8 - Optional water ow control valves...............................................................................................................19

4.9 - Flexible pipe option .....................................................................................................................................21

4.10 - Optional electric heater .............................................................................................................................22

4.11 - Optional water sensor................................................................................................................................22

4.12 - Optional condensate pump .......................................................................................................................22

A B C

42NH/L - size 2 744 300 50

42NH/L - size 3 914 300 50

42NH/L - size 4 1114 300 50

42NH/L - size 5 1314 300 50

42NH/L - size 6 1314 345 50

42NH/L - size 7 1614 345 50

A B

42NH/L - size 2 744 300

42NH/L - size 3 914 300

42NH/L - size 4 1114 300

42NH/L - size 5 1314 300

42NH/L - size 6 1314 345

42NH/L - size 7 1614 345

A B

42NH/L - size 2 744 300

42NH/L - size 3 914 300

42NH/L - size 4 1114 300

42NH/L - size 5 1314 300

42NH/L - size 6 1314 345

42NH/L - size 7 1614 345

EFG

H I

0.5%

±0.5% ±0.5%

9a 9b

11a

10a

10b

12b

12a

13a 13a

Ø16

4w-v

2w-v

2w-v + B

BAS

60 50

100

DOWN

17a

17b

17c

16a 16b 16c 16d

15a

15b

15d

15c

15e

18a

Figure titles and legends:

1 Clearance in mm without rectangular ange inlet

2 Clearance in mm with rectangular ange 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 Waterow adjustment of optional 2-way valve with balancing function

16a Control knob removal

16b Knurled nut untightening

16c Waterow adjustment (white knob)

16d Knurled nut tightening in initial position

17 Optional airow controller

17a Air Damper

17b Fresh airow setting (in m3/h)

17c Airow adjustment screw

18 Coil protective caps removal

18a Protective caps (factory tted)

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