TEV marstair CXE Series User manual

55908039-03
CXE SPLIT SYSTEMS
TECHNICAL MANUAL

2 55908039-03
INDEX
CONTENTS
PAGE
PART NUMBERS, OPTIONS, UNIT COMBINATIONS, DIMENSIONS & WEIGHTS
3-4
PERFORMANCE DATA & AIR FLOW
4
SOUND POWER AND SOUND PRESSURE LEVELS
5
ELECTRICAL DATA
6
CXE
DIMENSIONS
7
INSTALLATION: CONTENTS & PIPEWORK
8
ELECTRICAL: FUSES & WIRING DIAGRAMS
9
CONTROLLER SETTINGS
10
MCU+
INSTALLATION: DIMENSIONS
11
PIPEWORK
12
ELECTRICAL
13 -14
REFRIGERANT
15 -17
COMPONENT IDENTIFICATION
CXE UNITS
18
MCU+ UNITS
19
1. TEV Ltd recommend that personnel working on this equipment be skilled and fully conversant with
the appropriate Air Conditioning, Refrigeration and Electrical practices and have sound knowledge
of current Industrial Safe Working practices.
2. CXE models are electronic control units that use R407C refrigerant; they provide cooling within
the range of 2.8 –6.8 kW. These units are matched with MCU+ outdoor units to complete a
system.
3. These units contain live electrical components, moving parts and refrigerant under pressure.
Always site out of reach of children and protect from vandalism.
4. The data plate only gives information for the CXE unit. For system details add input power and
current of indoor and outdoor unit, including any heater load.
GENERAL

3 55908039-03
MODEL
Part No.
CXE30
MASTER
55917026
CXE50
MASTER
55917028
CXE70
MASTER
55917029
CXE30
SLAVE
55917056
CXE 50
SLAVE
55917058
CXE70
SLAVE
55917059
Evaporators
Condensing unit
2 x CXE30
MCU+50
2 x CXE50
MCU+80
2 x CXE50
MCU+90
2 x CXE50
MCU+100
2 x CXE70
MCU+100
2 x CXE70
MCU+130
2 x CXE70
MCU+150
3 x CXE50
MCU+100
3 x CXE50
MCU+130
3 x CXE50
MCU+150
3 x CXE50
MCU+165
3 x CXE70
MCU+100
3 x CXE70
MCU+130
3 x CXE70
MCU+150
3 x CXE70
MCU+165
3 x CXE70
MCU+180
3 x CXE70
MCU+200
If heater is to be fitted to a slave it must also be fitted to the master.
MODEL
Part No.
1ph
3ph
MCU+50
55017006
55017013
MCU+80
55017008
55017015
MCU+90
55017009
55017016
MCU+100
-
55017017
MCU+130
-
55017018
MCU+150
-
55017019
MCU+165
-
55017020
MCU+180
-
55017021
OPTIONAL KITS
PART NUMBER
DESCRIPTION
55900721
3kW heater (MASTER)
55900722
3kW heater (SLAVE)
OPTIONS
UNIT COMBINATIONS
PART NUMBERS

4 55908039-03
AIR FLOWS
Evaporators
Condensing unit
Duty at
8ºC kW
Duty at
12.7ºC kW
2 x CXE30
MCU+50
3.90
4.80
2 x CXE50
MCU+80
5.60
6.90
2 x CXE50
MCU+90
6.40
7.30
2 x CXE50
MCU+100
7.30
8.20
2 x CXE70
MCU+100
7.60
8.80
2 x CXE70
MCU+130
8.40
10.00
2 x CXE70
MCU+150
9.50
11.00
3 x CXE50
MCU+100
7.70
9.10
3 x CXE50
MCU+130
8.50
10.20
3 x CXE50
MCU+150
9.80
11.30
3 x CXE50
MCU+165
10.80
12.50
3 x CXE70
MCU+100
8.00
10.00
3 x CXE70
MCU+130
8.90
11.10
3 x CXE70
MCU+150
10.0
11.50
3 x CXE70
MCU+165
11.00
12.70
3 x CXE70
MCU+180
12.50
14.00
At 27°C External Ambient
MODEL
UNPACKED
PACKED
CXE
HEIGHT
WIDTH
DEPTH
WEIGHT
HEIGHT
WIDTH
DEPTH
WEIGHT
30
483
845
320
18
530
950
370
21
50
483
845
320
20
530
950
370
23
70
483
845
320
23
530
950
370
26
MODEL
UNPACKED
PACKED
MCU+
HEIGHT
WIDTH
DEPTH
WEIGHT
1ph
WEIGHT
3ph
HEIGHT
WIDTH
DEPTH
WEIGHT
1ph
WEIGHT
3ph
50
720
1000
300
64
62
720
1080
340
66
64
80
720
1000
300
66
64
720
1080
340
68
66
90
820
1000
350
76
73
820
1090
390
78
75
100
820
1000
350
-
81
820
1090
390
-
83
130
1080
1000
425
-
101
1080
1090
465
-
105
150
1080
1000
425
-
103
1080
1090
465
-
107
165
1080
1000
425
-
103
1080
1090
465
-
107
180
1275
1100
425
-
118
1280
1215
465
-
123
MODEL
m³/s
CXE 30
0.61
CXE 50
0.66
CXE 70
0.58
MODEL
m³/s
MCU+50
0.97
MCU+80
0.97
MCU+90
0.97
MCU+100
0.97
MCU+130
1.85
MCU+150
1.85
MCU+165
1.85
MCU+180
1.85
PERFORMANCE DATA (kW)
DIMENSIONS & WEIGHTS

5 55908039-03
INDOOR UNIT
MAXIMUM
SPEED
SOUND POWER LEVELS
SOUND PRESSURE
LEVELS
SPEED
Frequency Hz
125
250
500
1K
2K
4K
dB(A)
NC
CXE 30
69.1
67.7
67.6
65.6
62.2
56.0
55
48
CXE 50
71.7
69.2
69.1
67.1
63.2
58.5
56
50
CXE 70
70.1
68.2
68.6
66.1
63.2
57.5
56
49
Sound Power Levels were obtained in full accordance with the direct method of BS EN ISO3174:2000. Levels are
shown in dB with a standard reference of 1 pW.
Sound Pressure Levels in dB(A) refer to semi-hemispherical radiation (wall or ceiling mounted) at a distance of 1.5m
from the front of the unit, with the fan operating at full speed.
OUTDOOR UNIT
MAXIMUM
SPEED
SOUND POWER LEVELS
SOUND PRESSURE
LEVELS
SPEED
Frequency Hz
125
250
500
1K
2K
4K
dB(A)
NC
MCU+ 50
74
68
67
66
61
54
49
44
MCU+ 80
71
69
68
65
60
54
49
43
MCU+ 90
82
72
69
69
63
57
52
47
MCU+ 100
79
74
72
69
64
58
53
47
MCU+ 130
73
70
70
69
65
57
52
47
MCU+ 165
73
70
70
69
66
58
57
51
MCU+ 150
73
70
70
69
66
58
57
51
MCU+ 180
73
72
72
69
66
58
59
53
Sound Power Levels were obtained in full accordance with the direct method of ISO 3741: 1988. Levels are shown in
dB with a standard reference of 1 pW.
Sound Pressure Levels in dB(A) refer to semi-hemispherical radiation (wall or floor mounted) at a distance of 3m from
the front of the unit, with the fan operating at full speed; (add 3dBA or 3NC for units at an intersection of a wall, add
1dBA or 1NC for high level wall mounted units).
SOUND POWER AND SOUND PRESSURE LEVELS

6 55908039-03
PERFORMANCE DATA
UNIT ELECTRICAL LOADS [230V 50Hz 1Ph (A) or 400V 50Hz 3Ph (A/Ph)]
MODEL
FAN MOTOR
HEATER
CXE 30
0.8
13.0
CXE 50
0.8
13.0
CXE 70
0.8
13.0
MODEL
1ph
3ph
Power
(nominal)
(kW)
Starting
current
LRA
(A)
Nominal
current
FLA
(A)
Power
(nominal)
(kW)
Starting
current
LRA
(A)
Nominal
current
FLA
(A)
MCU+ 50
2.0
58
8.9
1.9
26
4.2
MCU+ 80
3.0
76
11.5
3.0
40
4.9
MCU+ 90
4.2
114
16.9
4.1
48
7.1
MCU+ 100
-
-
-
4.3
51
7.2
MCU+ 130
-
-
-
4.4
62
7.7
MCU+ 165
-
-
-
5.3
68
8.7
MCU+ 150
-
-
-
6.0
71
9.5
MCU+ 180
-
-
-
7.0
71
11.9
ELECTRICAL DATA

7 55908039-03
CXE DIMENSIONS

8 55908039-03
The unit may be mounted on a wall or solid ceiling using brackets supplied. It should be matched with the
appropriately sized outdoor unit; this instruction should be used in conjunction with the outdoor unit installation
instructions.
1. Fit all kits prior to installing the unit. (Heater kit is easier to fit when unit has been mounted).
2. Ensure that the mounting surface will support the operating weight of the unit (see table below).
3. Mark out the mounting positions and drill holes to suit 6mm rawlbolt shields or equivalent strength fasteners
(ensure that the unit is positioned to give sufficient access (min 0.5m) to the electrics access side).
4. Fix the mounting brackets to the unit in the correct
position for wall or ceiling mounting.
5. Raise the unit into position and secure the fixings,
ensuring that it is square and level.
6. Remove the drain tray then fit the drain stub, nut &
gasket (Fig.1). Refit the drain tray.
Fig.1
CXE PIPEWORK
NITROGEN CHARGE
The unit contains a small charge of dry nitrogen, which should be discharged into the atmosphere. This is a non-toxic,
non-ozone depleting gas with no global warming potential.
PIPE CONNECTIONS
Pipework is terminated with 2 flare nuts & bonnets. Access is via the rear right hand side. Pipes exit the unit through
holes in the back panel.
INDOOR UNIT
CXE 30
CXE 50
CXE 70
LIQUID / EXPANSION
3/8"
3/8"
1/2"
SUCTION
1/2 "
1/2 "
5/8"
CONDENSATE DRAIN
Push fit connections are widely available for the 7/8” (22mm) OD condensate drain and 3/4"(19mm) ID drain stub
adaptor. Alternatively 7/8” (22mm) bore plastic tubing may be fitted directly to the stub/adaptor with a hose clamp.
Take care not to overtighten hose clamps as this could damage the stub pipe.
•Cables are routed to the terminal block via the cable cord grips at the rear of the unit and then through the back
of the electrics box (see page 2).
•Cables MUST be size compatible with the recommended system fuse.
CONTENTS
PARTS DESCRIPTION
ACTION
Envelope containing operating instructions
and Declaration of Conformity
Pass to the end user.
Drain Stub/Nut/Gasket
Fitted by installer.
Drain stub adaptor
Convert to ¾" drain if required.
Mounting brackets plus fixings
Use to hang unit.
CXE ELECTRICAL CONNECTIONS
DRAIN TRAY
GASKET
NUT
DRAIN STUB
CXE INSTALLTION

9 55908039-03
FUSES
Note: On 3 ph systems the supply must go to the MCU+ outdoor unit and then to the CXE indoor unit.
For fuse sizing with electric heating contact Marstair technical department.
WIRING DIAGRAM
MASTER (Also shows optional heater)
SLAVE (Also shows optional heater)
1PH FUSE SIZE (Cooling Only Systems)
MCU(+)
15
20
30
40
50
60
80
90
100
130
150
165
180
200
FUSE
16
16
16
20
16
20
25
32
-
-
-
-
-
-
3PH FUSE SIZE (Cooling Only Systems)
MCU(+)
30
40
50
60
80
90
100
130
150
165
180
200
FUSE
10
10
10
10
10
16
16
16
20
20
25
32

10 55908039-03
TEMPERATURE CONTROL (Do not set the controller below 4°C.)
The SET temperature is factory set at 12⁰C.
The digital display normally displays the return air temperature.
To change the SET temperature, press and hold down the SET button. If no alarms
active, the ‘St1’ label appears and the current value is shown on the screen and will
flash.
To change the Setpoint value, press ▲ and ▼ keys within 60 seconds.
The display will revert to the return air temperature after 60 seconds.
The fitted de-ice thermostat will activate a de-ice cycle when there is a build up of ice on
the evaporator coil.
Cellarators will only heat a room if the electric heater option is fitted.
WARNING
The following actions could damage your system:
1. Switching the unit OFF and ON quickly
2. Setting the unit to HEAT and then back to COOL quickly
NB: Allow at least 3 minutes between the above actions.
MOUNTING
Whether floor or wall mounted, it is essential that the mounting surface is capable of supporting the unit weight. Leave
space around the unit for air circulation and access for installation and maintenance.
1500 min air off
100 min 100 min
600 min
CONTROLLER SETTINGS
MCU+ INSTALLATION

11 55908039-03
MCU+ 50-100 (Dimensions in mm.)
MODEL
A
B
C
D
E
F
G
H
G1
H1
Weight (kg)
1 Ph
3 Ph
MCU+ 50
1000
300
660
570
213
60
333
308
295
275
64
62
MCU+ 80
1000
300
660
570
213
60
333
308
295
275
66
64
MCU+ 90
1000
350
760
495
250
70
383
358
345
325
76
73
MCU+ 100
1000
350
760
495
250
70
383
358
345
325
--
81
MCU+ DIMENSIONS

12 55908039-03
MCU+ 130 –180 (Dimensions in mm.)
MODEL
A
B
C
D
E
Weight (kg)
MCU+ 130
1000
1020
495
251
100
101
MCU+ 150
1000
1020
495
251
100
103
MCU+ 165
1000
1020
495
251
100
103
MCU+ 180
1100
1215
675
211
95
118
1. Individual pipe runs to a maximum of 20m, including 7.5m lift, are permissible with liquid lines, 80m with
expansion lines, provided good refrigeration practice is followed.
Performance is based on 7.5m pipe runs. Correctly sized pipes for each installation will result in no significant
loss of capacity on extended pipe runs.
a) Pipe sizes are based on:-
Minimum of 3.8 m/s (750 fpm) suction gas velocity for horizontal or downflow.
Minimum of 7.6 m/s (1500 fpm) suction gas velocity for upflow.
Maximum of 15.2 m/s (3000 fpm) suction gas.
b) Where vertical risers exceed 3m, oil traps must be formed in the pipe. This will help ensure that oil returns to
the compressor. Typically fit an oil trap every 3m with a trap at the bottom of the riser.
2. In calculating equivalent lengths of pipe runs, the effect of bends and fittings must be taken into account. The
table below covers the fittings most likely to be encountered in this installation.
MCU+ PIPEWORK

13 55908039-03
The equivalent lengths of all the fittings in a pipe run should be added together and the total added to the actual
pipe length in order to calculate the total equivalent length.
3. Use the shortest possible route, avoiding sharp bends.
4. Completely insulate the suction line, fully over the indoor unit drain tray.
USING SUCTION AND EXPANSION LINES
The expansion assembly must be removed from the indoor unit and connected to the outdoor unit allowing a pipe run
of up to 80m, including a maximum lift of 20m.
Fully insulate both the suction and expansion lines, including the expansion device: ensure the pipes are insulated
well over the drain tray at the indoor unit.
MODEL
MAXIMUM LENGTH OF EQUIVALENT
SUCTION LINE PIPE (m)
SUCTION LINE PIPE SIZES
EXPANSION LINES
PIPE SIZES
UNIT SIZE
TYPE
⅜
½
⅝
¾
⅞
1⅛
1⅜
⅜
½
⅝
¾
50
Common
7.5
18
50
80
7.5
50
80
Twin
7.5
23
80
80
80
Common
11
30
80
50
80
Twin
15
50
80
50
80
90
Common
10
25
55
80
20
80
Twin
10
36
80
7.5
80
100
Common
7.5
22
45
80
15
80
Twin
7.5
18
50
80
7.5
50
80
Triple
15
50
80
50
80
130
Common
15
30
80
12
60
80
Twin
7.5
18
50
80
7.5
50
80
Triple
10
36
80
7.5
80
150
Common
12
27
80
8
50
80
Twin
14
36
80
7.5
50
80
Triple
10
36
80
7.5
80
165
Common
8
18
60
80
7.5
40
80
Triple
7.5
18
50
80
7.5
50
80
180
Common
7.5
16
55
80
7.5
35
80
Triple
7.5
18
50
80
7.5
50
80

14 55908039-03
PIPE CONNECTIONS
Units are supplied with the following male flare connections (sizes in inches):
Model
MCU+
Size
50
80
90
100
130
150
165
180
Expansion
3/8
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Suction
1/2
5/8
5/8
3/4
3/4
3/4
3/4
7/8*
CONNECTING THE UNITS
1. Ensure both service valves on the unit are closed (clockwise) before
commencing installation.
2. If a expansion assembly requires cleaning:
a. Remove the entire expansion assembly from the outdoor unit.
b. Split the expansion assembly in the middle and remove the existing
restrictor.
c. Drop the new restrictor vertically into the field connector.
d. Reassemble in the vertical plane (field connector lowest) when
reassembled the restrictor can be heard to be free to move if the
assembly is shaken.
e. Refit the expansion assembly.
3. Connecting the pipework
a. Remove the flare nuts from the suction service valve and the expansion
device as appropriate.
b. Ensure that both the suction and expansion lines are fully insulated.
c. Place the flare nuts over the incoming pipework and flare the pipe ends.
d. Connect the pipework between the units. Do not leave pipes ends, valves
etc open to the atmosphere. Always use 2 spanners when tightening the flare nuts to avoid
twisting the pipes. Use a small amount of refrigerant oil on the mating surfaces.
e. Sight glasses and filters driers are not necessary, but if required should be fitted between the out
door unit liquid shut off valve and the expansion device on the MCU+ units.
f. MCU+ 180 has a ⅞¨ suction pipe with brazed connections. Use a protective shield to avoid
scorching the side panel.
EVACUATING
With the valves closed, connect a vacuum pump to the service ports on the outdoor unit valves. Evacuate the
interconnecting pipework and indoor unit to 1000 microns (1 Torr) or better. Allow this to be held for a minimum of 15
minutes
BRANCH LINE LENGTH
All branch lines must have the same equivalent lengths to ensure that the system is correctly balanced.
MCU+ ELECTRICAL
•The installer supplies mains, control and interconnecting cables: equipment must be earthed.
•Wiring must be carried out in accordance with local and national codes.
•Mains supply cables must be size compatible with the recommended fuse.
•An all pole isolator switch should be positioned within easy reach of the indoor/outdoor unit dependant on
which receives the fuse supply.
•Cable clamps for use with stranded cables are supplied and should be used to secure incoming/outgoing
cables. Installers must supply a method of securing solid sheathed cables.
3PH MCU+
On 3 PH MCU+ it is possible for the scroll compressor to run backwards.

15 55908039-03
This becomes obvious on start up - the compressor will not develop a normal running pressure differential and the top
will not become warm: it may be excessively noisy. If this happens, switch off the mains power and exchange the two
supply phases not connected to the indoor unit. This will correct the rotation.
ISOLATOR SWITCHES
On a 3 phase system, ensure that the neutral contact of the isolator switch is an early make, late break type. This
applies to all switches in the supply line. If in doubt, do not switch the neutral but connect it solidly.
WIRING
•Cable entry for the outdoor unit electrics is through the cabinet to a terminal block.
•Ensure that all connections are secure and that both units are earthed.
•MCU+ fan motors have a single speed and are ready for use at all outdoor temperatures.
NOTE: The MCU+ wiring diagram can be found on the inside of the front panel.
INTERCONNECTING WIRING
REFRIGERANT

16 55908039-03
IF NO ADDITIONAL REFRIGERANT CHARGE IS REQUIRED:
Open the valves very slowly using a 5 or 8mm Allen key. Replace the caps on the service ports, (torque to 25NM).
IF ADDITIONAL REFRIGERANT IS REQUIRED:
1. After evacuating the indoor unit and interconnecting pipework, slowly open the valves using 5 or 8mm Allen
key. The high and low pressure should equalise within a minute.
2. Additional charge should be introduced with the system running in the air conditioning mode
(including heat pumps). See indoor unit instruction for additional system charge.
3. All units are fitted with head pressure control. The link wire across the orange terminals allows
the fan to operate at full speed. THIS SHOULD BE REMOVED AFTER CHARGING
4. ADDITIONAL REFRIGERANT - pipe runs over 7.5m.
Add refrigerant and oil for each additional metre over 7.5m, based on the following:
Expansion line size.
3/8"
1/2"
5/8"
Additional refrigerant (g/m).
16
30
48
Additional POE oil
25g per 350g of additional
refrigerant to a maximum of 300g
5. If a manual HP cutout is fitted, ensure that the reset button is depressed.
6. A random start delay of up to 1 minute occurs when mains is first applied. A 3 minute delay occurs
between successive compressor operations on all systems.
7. Additional refrigerant and polyolester oil should be introduced through the Schrader valve on the indoor
unit, or the service port on the suction service valve on the outdoor unit. Ensure the refrigerant is the
correct type, as shown on the rating plate. R407C must always be added in the liquid state.
8. Run the system for a few minutes to allow it to stabilize. Where possible, charge to a sweat line on the
evaporator. Typical suction pressures on short lines at UK conditions, with high speed evaporator fan, high
speed condenser fan, should be; electromechanical comfort system approx 4.4 bar (65 psig); electronic
comfort system approx 3.8 bar (55 psig); heat pump system approx (58 psig). Systems should not be
overcharged, to avoid liquid return to the compressor.
FACTORY CHARGE
FOR 7.5M RUNS AT UK CONDITIONS
MCU+
gms
17 Series MCU+
50
1690
1167
80
1880
1357
90
2060
1422
100
2520
1882
130
4170
3075
150
4170
3075
165
4540
3445
180
4640
4229
MCU+ REFRIGERANT
Additional polyolester oil:
L’Unite 181-023,
ICI Emkarate RL32S or
RL32CF, Mobil Arctic
EAL22 or EAL22C.

17 55908039-03
9. HEAD PRESSURE CONTROL SAGINOMIYA (RGE –ZIN4 –SH)
The head pressure controller is factory set to suit the refrigerant. It may be necessary to adjust this to suit site
conditions, to raise or lower the nominal head pressure.
a. With the system switched off, connect a high pressure gauge to the liquid line service valve.
b. Switch on the system, indoor fan set to high speed, and run for a few minutes to stabilise.
c. The head pressure should be approximately:
R407C: 275-280 psig (18.9-19.6barg) to achieve this adjust the screw clockwise to increase pressure or
anticlockwise to decrease. Each ½ turn will alter the pressure by approx 5 psig (0.5 barg)
Min fan speed (0 rpm) and fan cut in pressure 200 psig (13.8 barg) are factory set and not adjustable.
NOTE: The condenser fan may stop if the operating pressure drops below 200 psig (13.8 barg)
10. HEAD PRESSURE CONTROL ALCO (FSY-42S) & SAGINOMIYA (XGE-4C)
The head pressure controller is factory set to suit the refrigerant. It may be necessary to adjust this to suit site
conditions, to raise or lower the nominal head pressure.
ALCO (FSY-42S)
a. With the system switched off, connect a high pressure gauge to the liquid line service valve.
b. Switch
on the system, and
run for a few
minutes to
stabilise.
c. The head pressure
should be
approximately:
Min fan speed (0 rpm) and fan cut in pressure 200 psig (13.8 barg) are factory set and not adjustable.

18 55908039-03
NOTE: The condenser fan may stop if the operating pressure drops below 200 psig (13.8 barg)
R407C: 275-280 psig (18.9-19.6barg) to achieve this remove sealing plug and insert 2mm or 5/64”
allen key into setting screw. Turn allen key clockwise (+) or counter clockwise (-) to readjust the setting.
Do not turn setting screw more than 3 turns clockwise (+3). Use following table as a quick guideline for
setting:
Pressure changes per turn of adjusting screw:
Pressure change: 9.2 … 21.2 bar:
Clockwise ~ +2,5 bar, counter clockwise ~ -2,5 bar
After adjustment, re-insert sealing plug and make sure that it is properly fitted. IP65 protection
requires firmly sealed plug
NOTES:
Tolerances for condensing temperatures setpoint: ±2K
SAGINOMIYA (XGE-4C)
R407C: 275-280 psig (18.9-19.6barg) to achieve this turn the range adjusting screw clockwise (+)
for increasing the setting value or counter clockwise (-) for decreasing the setting value.
Pressure changes per 1 turn of adjusting screw:
Pressure change: 10 … 25bar:
Clockwise ~ +1.5 bar, counter clockwise ~ -1.5 bar

18 55908039-03
1
Grille
9
De-ice stat (option)
2
Fan / motor
10
Heater assembly (option)
3
Case
11
Drain stub adaptor
4
Wall / ceiling mounting brackets
12
Drain tray
5
Heater bracket
13
Side access panel
6
Coil assembly
14
Electrics box door
7
Thermostat bulb & bracket
15
Digital display (option)
8
Restrictor assembly / extended pipe (option)
CXE INDOOR UNIT COMPONENT IDENTIFICATION

19 55908039-01
1
LID
18
FRONT ACCESS
2
CONTACTOR
19
FAN GUARD
3
OVERLOAD
20
FASCIA PANEL
4
HEAT EXCHANGER COIL
21
CORNER PANEL
5
REAR ACCESS PANEL
22
SUPPORT BRACKET
6
MAINS TERMINAL COVER
23
FAN / MOTOR ASSEMBLY
7
FAN CAPACITOR
24
END CLAMP
8
BULKHEAD PANEL
25
TERMINAL
9
HP SWITCH (MANUAL, OPTION)
26
FUSE
10
SERVICE VALVE (LIQUID)
27
FUSE TERMINAL
11
SERVICE VALVE (SUCTION)
28
TERMINAL (4 WAY)
12
VALVE PANEL
29
EARTH TERMINAL
13
BASE
30
HEAD PRESSURE CONTROL pcb
14
MOUNTING FOOT
31
3 MINUTE TIMER pcb
15
LP SWITCH
32
COMPRESSOR CAPACITOR
16
COMPRESSOR
33
ELECTRICS BOX
17
HANDLE
TEV LTD,ARMYTAGE ROAD, BRIGHOUSE, WESTYORKSHIRE, HD6 1QF. + 44 (0) 1484 405600 [phone]
[e-mail] www.marstair.com
TEL: FAX:
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MCU+ OUTDOOR UNIT COMPONENT IDENTIFICATION