14
5.
W
iring
Inf
orma
tion
Cooler - Air Defrost Systems - Single Phase
Diagram 1. Wiring Diagram for
System, Air Defrost 208-230/1/60 (B): Models PTT047H2B, PTT063H2B,
PTT072H2B, PTT099H2B, and PTT128H2B.
Medium and Large Cabinet Models Wiring. 208-230/1/60 voltages.
YELLO
W
BLACK
N
R
T
L
C
BLACK
BLUE
BLAC
K
BLUE
0 - Unit Of
f ( Not an electrical disconnect
)
-Defrost termination temperature = 3.5°C / 38°F
-Defrost sensor has 59" lead length and a blue label.
Approximate dial settings of room thermostat dial
:
-(3) Hours of compressor run time between defrosts
.
Minimum compressor run time - 1 minute Minimum compressor of
f time - 4 minute
s
-Room temp sensor has 59" lead length
6 - 34°F / 1°
C
5 - 38°F / 3°
C
4 - 41°F / 5°
C
3 - 45°F / 7°
C
1 - 52°F /
11
°C
Room
Thermostat Notes:
CC
R
T
-- ROOM
THERMOS
TA
T
CFM -- CONDENSER F
AN MOT
OR
CC -- COMPRESSOR CONT
ACT
OR
EFM -- EV
APORA
T
OR
FA
N MOT
OR
LEGEND
HL
-- HE
A
T
ER LIMIT
THERMOST
A
T
DH -- DEFROST
HEA
TER
GND -- GROUND
RC -- RUN CA
P
A
CI
T
O
R
SR -- ST
AR
T
REL
A
Y
USE COPPER CONDUCT
ORS ON
LY
NOT
FA
CT
OR
Y
WIRING
FIELD WIRING
(WHEN PLUG
PROVIDED
)
SC -- ST
AR
T
CAP
ACIT
O
R
HPS -- HIGH PRESSURE SWITC
H
PRIMAR
Y
SINGLE PHASE PROTECTION PROVIDE
D
PRIMAR
Y
SINGLE PHASE PROTECTION PROVIDE
D
CCH -- CRANKCASE HEA
TER
PFC -- PRESSURE F
AN CYCLE SWITCH
DL
T
-- DRAIN LINE
THERMOST
A
T
DLH -- DRAIN LINE HEA
TE
R
TFC --
TEMPERA
TURE
FA
N CYCLE SWITCH
WN -- WIRE NU
T
SW -- SWITCH
SC
COMPRESSOR
R
S
C
3
RC
2
1
1
2
5
SR
208-230V/1PH/60HZ
CC
L1
T1
L2
T2
BLACK
BLACK
GND
CFM
CFM
EF
M
EF
M
EF
M
DL
H
YELLOW
W
H
IT
E
WN
DL
T
GRA
Y
WN
WN
GRA
Y
BLU
E
CC
H
BLAC
K
BLAC
K
YELLO
W
PF
C
WN
L1
T1
WN
TFC
Re
v
2.
47
La
rg
e
C
ab
in
et
La
rg
e
C
ab
in
et
O
u
td
o
o
r U
n
it
s
O
n
ly
O
u
td
o
o
r U
n
it
s
O
n
ly
