Carrier 42EM Series - Page 8

8
Figure titles and legends:
1 Clearance without return air plenum
2 Clearance with return air plenum
3 Electrical danger pictogram
4 Caution hand hazard pictogram
5 General danger pictogram
6 Lifting unit for installation in a false ceiling
7/8 Levelling the unit
9 Condensate drain pipe
9a 20 mm/m fall in horizontal pipe run
9b 50 mm siphon
10 Several units connected to one condensate collector
10a 20 mm/m fall
11 Freshaircontrollermodication
12 Fan assembly removal
12a Removing fan access panel
12b Position of torx screws
12c Slide assembly down
13 Capacitor assembly
14 Fan speed controller
14a Low speed connector - red wire
14b Medium speed connector - grey wire
14c High speed connector - black wire
L Neutral
15 Optional fan speed terminal block
15a Customer connection
15b Motor
16 Wiring 42EM sizes 22 and 32
16a Motor
16b Auto-transformer
17 Electric heater removal
17a Location of screw
18 Multi-speed bare-wire unit
22 Earth - yellow/green wire
35 Live, electric heater (option) - brown wire
36 Neutral, electric heater (option) - blue wire
37 Neutral - blue wire
38 Low speed - red wire
39 Medium speed - grey wire
40 High speed - black wire
19 Variable-speed bare-wire LEC unit
20 0-10 V - yellow wire
21 GND - blue wire
22 Earth - yellow/green wire
41 Live, 230 V - brown wire
42 Neutral, 230 V - blue wire
23 Electrical heater - Live, 230 V - brown wire
24 Electrical heater - Neutral, 230 V - blue wire
20 Multi-speed unit with control box
22 Earth - yellow/green wire
23 Neutral, 230 V - blue wire
24 Live, 230 V - brown wire
25 Cooling valve actuator - brown wire
26 Heating valve or electric heater actuator
- brown wire
27 Changeover sensor - brown wire
28 Relay
29 Very high speed 1 - black wire
30 Medium speed 3 - red wire
31 Low speed 5 - green wire
32 Very low speed 6 - purple wire
33 Medium speed 4 - orange wire
34 High speed 2 - grey wire
21 LEC unit with control box
20 0-10 V - yellow wire
21 GND - blue wire
22 Earth - yellow/green wire
23 Neutral, 230 V - blue wire
24 Live, 230 V - brown wire
25 Cooling valve actuator - brown wire
26 Heating valve or electric heater actuator
- brown wire
27 Changeover sensor - brown wire
28 Relay
22 Multi-speeds unit with fast connector option -
6 speeds wired
L Neutral, blue wire
1 Speed 1, black wire
2 Speed 2, grey wire
3 Speed 3, red wire
4 Speed 4, orange wire
5 Speed 5, green wire
6 Speed 6, purple wire
7 GND, green/ yellow wire
23 Coil inlet/outlet positions, all sizes
In Water in
Out Water out
4-w V Four-way valves
2-w V Two-way valves
24 Coil drawing with cooling and heating side position
Outlet Water out
Inlet Water in
25 N.m Torque wrenches max
 1Airowdirection
24a Coil size 0x/1x/2x with 4 pipes
2a Cold valves side
3a Hot valves side
24b Coil size 3x with 4 pipes (Right-hand
connection)
2b Cold valves side
3b Hot valves side
24c Coil size 3x with 4 pipes (Left-hand
connection)
2c Hot valves side
3c Cold valves side
25 Meaning of wires - Proportinal valve actuator
25a Black wire (230 V valve actuator), actuator
rod rising
25b Green wire (24 V valve actuator), actuator
rod rising
25c Brown wire, Actuator rod lowering
25d Actuator rod in high position
25e Actuator rod in low position
26 Condensate pump positions
26a Highest pump position
26b Lowest pump position
27 Wiring 42EM sizes 23 and 33
27a Unused speed
27b, 27c, 27d (speeds wiring)
Same wiring colors as Fig. 14 for 3 speeds wired
Same wiring colors as Fig. 20 for all speeds wired
27e Neutral - blue wire
27f Earth - yellow/ green wire