iAIRE ultraDRY Series, Manual

Page: 25 / 38

RTU PIPING DIAGRAM
SAFETIES AT
LOW
SUCTION
PRESSURES
(LOW
LOAD)
THE
RA
W
AL
DEVICE
WILL
BYP
ASS
HOT
GAS
TO
THE
COMPRESSOR.
RA
W
AL
DEVICE
WILL
ALSO
INJECT
SOME
LIQUID
REFRIGERANT
INT
O
SUCTION LINE T
O
AVOID OVERHEA
TING THE COMPRESSOR DURING BYP
ASS. THIS WILL
ALSO PROLONG USE OF FIRST ST
AGE
AND IMPROVE DEHUMIDIFICA
TION.
SUCTION LINE
LIQUID LINE
HOT GAS LINE
CONDENSING UNIT
CHECK
VA
LV
E
E
C
B
A
R
D
A - FIL
TER DRIER B - LIQUID LINE RECIEVER C - CONDENSER COIL D - MODULA
TING HOT GAS V
AL
VE 1
ONL
Y USE FOR
2 ST
AGE UNITS
J
K
P
G
M
H
FANCOIL
ENTERING
AIR
(EA
T)
REHEAT COIL
T
DISCHARGE
AIR
(DAH)
H
LEA
VING
AIR
(LA
T)
NOT INST
ALLED IN SP
ACE CONTROL
UNITS
T
DISCHARGE
AIR
(DA
T)
T
Y1
Y2
W1 W2
W3
HEATING
ELECTRIC HEA
T
OR GAS HEA
T
(optional)
EV
AP
UNIT
VFD
SUPPL
Y
FA
N
DISCHARGE AIR
ENTERING
AIR
EA
DAMPER
(optional)
N
SUCTION LINE
LIQUID LINE
C
A
R
M
E - MODULA
TING CONDENSING V
AL
VE 1
G - RA
W
AL
APR V
AL
VE
H - SUCTION
ACCUMULA
TOR
J - LIQUD LINE BULB (NOT ON
APR-410-5)
K - EXTERNAL
EQUALIZER (APR-410-2
AND UP)
L - HOT GAS BULB (NOT ON
APR-410-5)
M - COMPRESSOR N - SHUT
OFF V
AL
VE
P
- HIGH TEMPERATURE SWITCH
R - FACTORY
HIGH PRESSURE SWITCH
S - EVAP
FREEZE STAT
L
S
S
SCH-0001-P
REVISION: V5.0.0.2
2 5
iAIRE
OM manual iAIRE, LLC