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CONNECTION DIAGRAM
CONT
A2
L2
400 3Ø
A1
POWER
L1
SUPPLY
A3
L3
SEE NOTE #11
BLK
YEL
PRM
L1
L3
L2
CONT 24
COM
BRN
*LPS
YEL/PNK
YEL/PNK
GRY
LVTB
Y
C
IFR
Y
G
R
INDOOR BLOWER MOTOR
TO INDOOR THERMOSTAT
- LEGEND -
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
CONTACTOR
CONT
CAPACITOR
CAP
COMPRESSOR
COMP
GROUND
GND
INDOOR FAN
IDF
*HPS
HIGH PRESSURE SWITCH
INDOOR FAN RELAY
IFR
*
LOW PRESSURE SWITCH
LPS
LOW VOLTAGE TERMINAL BLOCK
LVTB
OUTDOOR FAN MOTOR
OFM
PHASE ROTATION MONITOR
PRM
*
MAY BE FACTORY OR FIELD INSTALLED
1. Compressor damage may occur if system is overcharged.
2. This unit is factory charged with R410A in accordance with the amount shown on the rating plate. The charge is adequate for most systems using
matched coils and tubing not over 15 feet long. The best performance will be achieved when the unit operates with a suction gas superheat at the
compressor inlet of 5 ºF at normal rating conditions of the air conditioning and refrigeration institute (ARI). This chart may be used to approximate
the charge if ARI rating conditions cannot be obtained. ARI rating conditions are equivalent to DOE test "A" conditions. See product data literature
for required indoor air flow rates and for use of line lengths over 15 Ft.
3. Relieve pressure and recover all refrigerant before system repair or final unit disposal. Use all service ports and open all flow-control
devices, including solenoid valves.
GND
BLU
GRY/YEL
T2
T2
T1
COMP
BLK
GRN/YEL
T1
T3
YEL
T3
CAP
YEL
BRN
BLK
OFM
YEL
BRN
*HPS
BLU/PNK
BLU/PNK
BRN
EXTERNAL
POWER
C
SUPPLY
R
24 V
NOTE
(NOTES #4)
PRM LED INDICATOR
OFF: NO 24VAC
ON: OK
FLASH: PHASE PROBLEM
NOTES:
1. Symbols Are Electrical Representation Only.
2. Compressor And Fan Motor Furnished With Inherent Thermal Protection.
3. To Be Wired In Accordance With National Electric N.E.C. And Local Codes.
4. N.E.C. Class 2, 24 V Circuit, Min, 40 Va Required, 60 Va On Units Installed With LLS.
5. Use Copper Conductors Only. Use Conductors Suitable For At Least 75ºC (167ºF).
6. If Indoor Section Has A Transformer With A Grounded Secondary, Connect the
Grounded Side To The BRN Lead.
7. If Any Of The Original Wire, As Supplied Must Be Replaced, Use The Same Or
Equivalent Wire.
8. Check All Electrical Connections Inside Control Box For Tightness.
9. Do Not Attempt To Operate Unit Until Service Valves Have Been Opened.
10. Do Not Rapid Cycle Compressor. Compressor Must Be Off 3 Minutes To Allow
Pressures To Equalize Between High And Low Side Before Starting.
11. It Is Imperative To Connect 3Ø Field Power To Unit With Correct Phasing. The Phase
Rotation Monitor Will Not Allow The Contactor To Be Energized If The Phasing Is Not
Correct. If Phasing Is Reversed, Simply Interchange Any Two Of The Three Power
Connections On Field Side.
COOLING ONLY CHARGING PROCEDURE
1. Operate Unit A Minimum Of 10 Minutes Before Checking Charge.
2. Measure Suction Pressure By Attaching A Gage To Suction Valve Service Port.
3. Measure Suction Temperature By Attaching An Accurate Thermister Type Or Electronic
Thermometer To The Suction Line At Service Valve. Measure Outdoor Air Dry-Bulb
Temperature With A Thermometer.
4. Measure Outdoor Air Dry-Bulb Temperature With A Thermometer.
5. Measure Indoor Air (entering Indoor Coil) Wet Bulb Temperature With A Sling
Psychrometer.
6. Refer To Table I. Find Outdoor Temperature And Evaporator Entering Air Wet-Bulb
Temperature. At This Intersection Note The Superheat.
7. Refer To Tabel II. Find Superheat Temperature Located In Step 6 And Suction
Pressure. At This Intersection Note Suction Line Temperature.
8. If Unit Has A Higher Suction Line Temperature Than Charted Temperature, Add
Refrigerant Until Charted Temperature Is Reached.
9. If Unit Has A Lower Suction Line Temperature Than Charted Temperature, Remove
And Recover Refrigerant Until Charted Temperature Is Reached.
10. If Outdoor Air Temperature Or Pressure At Suction Valve Changes, Charge To New
Suction Line Temperature Indicated OnChart.
11. This Procedure Is Valid When Indoor Air Flow Is Within ±21% Of Its Rated CFM.
CAUTION
Fig. 3 – 38CKE048- -060 - -X- -9 400- -50- -3
SCHEMATIC DIAGRAM (LADDER FORM)
A1
PRM
L2
L3
L1
COMP
CONT
T2
EQUIP
T1
L1
T1
GND
T3
OFM
*LPS
*HPS
Y
G
R
INDOOR
THERMOSTAT
EXTERNAL POWER SUPPLY 24 V
TABLE I-SUPERHEAT CHARGING TABLE
(SUPERHEAT °F AT LOW-SIDE SERVICE PORT)
OUTDOOR
50
52 54 56 58 60 62 64 66 68 70 72 74 76
TEMP °F
9 12 14 17 20 23 26 29 32 35 37 40 42 45
55
60
7 10 12 15 18 21 24 27 30 33 35 38 40 43
-- 6 10 13 16 19 21 24 27 30 33 36 38 41
65
-- -- 7 10 13 16 19 21 24 27 30 33 36 39
70
-- -- -- 6
75
-- -- -- -- 5
80
85
-- -- -- -- -- -- 8 11 15 19 22
-- -- -- -- -- --
90
--
--
95
-- -- -- -- -- -- --
100
105
--
--
110
--
--
-- --
115
TABLE II-REQUIRED SUCTION TUBE TEMPERATURE °F
(MEASURED AT LOW-SIDE SERVICE PORT)
SUPERHEAT
SUCTION PRESSURE AT SERVICE PORT PSIG.
TEMP. °F
61.5
0
35
2
37
4
39
6
41
8
43
10
45
12
47
14
49
16
51
18
53
20
55
22
57
24
59
26
61
28
63
30
65
32
67
34
69
36
71
38
73
40
75
336013-101 REV. C
3
A2
A3
CONT
T2
L2
CAP
CONT
T3
L3
PRM
CONT 24V COM
CONT
IFR
R
C
EVAPORATOR ENTERING AIR °F WB.
9 12 15 18 21 24 28 31 34 37
8 12 15 18 21 25 28 31 35
26
30 33
5
9 13 16 20 24 27 31
--
--
--
--
--
6 10 14 18 22 25 29
--
8 12 15 20 23 27
--
--
--
--
--
--
5
9 13 17 22 26
--
--
--
--
--
-- --
6 11 15 20 25
--
--
--
--
--
-- -- --
8 14 18 23
64.2
67.1
70.0
73.0
76.0
79.2
82.4
85.7
37
39
41
43
45
47
49
51
39
41
43
45
47
49
51
53
41
43
45
47
49
51
53
55
43
45
47
49
51
53
55
57
45
47
49
51
53
55
57
59
47
49
51
53
55
57
59
61
49
51
53
55
57
59
61
63
51
53
55
57
59
61
63
65
53
55
57
59
61
63
65
67
55
57
59
61
63
65
67
69
57
59
61
63
65
67
69
71
59
61
63
65
67
69
71
73
61
63
65
67
69
71
73
75
63
65
67
69
71
73
75
77
65
67
69
71
73
75
77
79
67
69
71
73
75
77
79
81
69
71
73
75
77
79
81
83
71
73
75
77
79
81
83
85
73
75
77
79
81
83
85
87
75
77
79
81
83
85
87
89
77
79
81
83
85
87
89
91
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