Reznor MASA Unit Installation Manual - Manual (Page 20)

Form I-COND, P/N 220746R6, Page 20
FIGURE 6 - Typical Condensing Unit Wiring Diagram
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
5
6
4
3
2
30
FIELD CONTROL WIRING
350 FEET #14 GA.
250 FEET #16 GA.
150 FEET #18 GA.
LENGTH WIRE SIZE
TOTAL WIRE MINIMUM RECOMMENDED
MASA UNIT
TERMINALS
TERMINAL BLOCK -- LOW VOLTAGE
TERMINAL BLOCK -- HIGH VOLTAGE
COMPARTMENT
COMPARTMENT
R
T3 L3
R C
A BK
CONTACTOR
B
T2 L2
Y
L1 T1
Y
BK
COMPRESSOR
"B" COMPRESSOR IOL
#2 CONDENSER FAN
CAPACITOR
W
BK
IOL
W
R
1
#1
G GRD
W
A
B
L3 T3
Y L2 T2 W
IOL
CONTACTOR CONTACTS
CONDENSER
BK
L1 T1
BK
CONDENSER FAN
CAPACITOR
R
GRD G
"A" COMPRESSOR B
A
C
L3
R
T3
CONTACTOR
L2
Y
T2
L1
BK
T1
R
IOL Y
BK
COMPRESSOR
(CF2) (CF1)
208-240-480/3/60
DISCONNECT SWITCH
OPTIONAL FUSIBLE
8
BK
BK
C C NO
BK
NC
BK
LPCO
LPCO
CONDENSER
RELAY CONTACTS
FAN PERM.
4
4
Y
2
PR
BK
O
6
C C NO
BK
HPCO
HPCO
NC
2ND STAGE COMPRESSOR
CONTACTOR COIL
PERM. RELAY COIL (CR4)
CONDENSER FAN
CR
26
CR
30
8
BK
7
BR
6 - 7 - 8
24 - 25
2
CONTACTOR COIL
1ST STAGE COMPRESSOR
CONTACTOR COIL
11 - 12 - 13
20
CR
24
CR
O
BL
BR
BR
BR CONDENSER
1 - 2 - 3
2
A C CONTROL
TRANSFORMER
BREAKER
CIRCUIT
Y/W
24 V
BK
(SEE TRANSFORMER NOTES)
75 VA
Y 2 1
4
8
#1 CR
ANK
CASE
HEA
TER
BK
BK
R
7 8 CR
33
20
BR
X
RELAY COIL (CR1)
1ST STAGE
O 34
CR
8 7
RELAY COIL (CR2)
2ND STAGE
24 - 26
X
BR
GRD GRD
Y BR
A
B
C
O
R
GR
WIRING CODE
BLACK - BK
BROWN - BR
RED - R
ORANGE - O
YELLOW - Y
GREEN - GR
BLUE - BL
PURPLE - PR
WHITE - W
GRAY - GY
YELLOW/WHITE - Y/W
CONTACTS
CONTACTS HEA
TER
#2 CR
ANK
CASE
BK
BK
GR
1ST STAGE
2ND STAGE
M SERIES - AK5, 6 or 7-CUB1 DWG. #229701 REV. #5
LINE V
1
1
5
7
9
BL BL
BL BL
PR RELAY COIL (CR3) PR
X
8 CR
35 BR
7
3RD STAGE
20
X
Y1
Y2
Y3 63
62
61
87
CUSTOMER'S PREEVA UNIT
1
2
3
4
5
7
8
9
X
Y1
Y2
Y3
1
SAFETY
#2 ICM 221
Y T1 SAFETY T C
#1 ICM 221
Y SAFETY SAFETY T1
C
T
BK
BK
2ND STAGE
RELAY CONTACTS
RELAY CONTACTS
2ND STAGE
Y
4
Y
5
6
W
1
PR
3RD STAGE
RELAY CONTACTS
Y
4 6
W
1ST STAGE
RELAY CONTACTS
6
3
3 PR
4
W
PR
TRANSFORMER NOTES
FOR 208 VOLTS - USE BLACK AND RED LEADS
FOR 240 VOLTS - USE BLACK AND ORANGE LEADS
FOR 480 VOLTS - USE BLACK AND GRAY LEADS
BR
BR
OPTIONAL FACTORY WIRING
FACTORY WIRING
FIELD WIRING
(SEE NOTE #1)
X
CR
27 LOCKOUT INDICATION
RELAY COIL
CUSTOMER'S #2
2
X
21
CR
CUSTOMER'S #1
RELAY COIL
LOCKOUT INDICATION 2
(WITH FX05 CONTROLLER)
Y1
Y3
T7350D THERMOST
AT
(SEE NO
TE #2)
X
Y2
X
CUST
OMER'S
OPERATING SEQUENCE
1. FOR A TWO STAGE COOLING SEQUENCE JUMPER Y2 TO Y3.
THE SEQUENCE IS #1 THEN #1 AND #2.
2. FOR A THREE STAGE COOLING SEQUENCE, THE SEQUENCE
IS #1 THEN #2 THEN #1 AND #2.
3. WHEN THE ANTI-SHORT CYCLE PROTECTION MODULE IS IN
A LOCKOUT CONDITION, THE LOCKOUT INDICATION RELAY
COIL IS ENERGIZED.
AND IS WIRED IN SERIES WITH OPTIONAL FROSTSTATS WHEN APPLICABLE.
2. THERMOSTAT IS WIRED AND POWERED PER MANUFACTURER'S LITERATURE
1. #2 CONDENSER FAN ON SIZE 120 THRU 180 UNITS ONLY.
USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25
4. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.
5. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH
6. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS
TIMES THE MAXIMUM TOTAL INPUT AMPS.
AN OPTION.
NOTES
3. SEE RATING PLATE LABEL FOR MCA, TO DETERMINE LINE FEED COPPER WIRE SIZE.
7. USE COPPER CONDUCTORS ONLY.
X
Y1
Y2
Y3
49
47
7
(WITHOUT FX05 CONTROLLER)
Y1
Y3
T7350D THERMOST
AT
(SEE NO
TE #2)
X
Y2
X
CUST
OMER'S
48
46
TO PREEVA UNIT
SEE SHEET #2
TO PREEVA UNIT
SEE SHEET #2
CUSTOMER'S PREEVA UNIT ALTERNATE WIRING
K
250V. - 8 FLA / 48 LRA
2
4
#14 GA BL
125V. - 12 FLA / 60 LRA
INTERFACE NOT TO EXCEED
FOR CUSTOMER'S
RELAY CONTACTS
#14 GA BK #14 GA Y
6
L
M
"B" CIRCUIT SOLENOID VALVE
G
250V. - 8 FLA / 48 LRA
2
4
#14 GA BL
125V. - 12 FLA / 60 LRA
INTERFACE NOT TO EXCEED
FOR CUSTOMER'S
RELAY CONTACTS
#14 GA BK #14 GA Y
6
H
J
"A" CIRCUIT SOLENOID VALVE
K
L
M
G
H
J
12 13
14 15
19
CR BL 12 13 RELAY COIL
"A" CIRCUIT SOLENOID VALVE
12 - 13 8 7
12
13
14
15
BR
BR
25
CR BK 14 RELAY COIL
"B" CIRCUIT SOLENOID VALVE
12 - 13 8 7
BR
15 BR
7.0 Electrical and Wiring (cont’d)