I
nTroduCTIon
www.DaikinApplied.com 15
IM 893-10 • ROOFPAK SINGLEZONE UNITS
Controls, Settings and Functions
Table 2: Controls, Settings, and Functions
Symbol
Description
Function
Reset
Location
Setting
Range
Differential
Part No .
CS1 & 2
Switch (toggle),
refrigerant circuit
Shuts off compressor
control circuits manually
N/A
Main control panel
N/A
N/A
N/A
01355000
CDS 2
Discharge Thermostat Refrigerant temperature
N/A
Compressor
N/A
N/A
N/A
910150290
DAT
Discharge air
temperature sensor
Senses discharge air
temperature
N/A
Discharge air
section
N/A
N/A
N/A
060004705
DHL
Duct high limit switch
Prevents excessive VAV
duct pressures; shuts fan
OFF
Auto
Main control panel
3.5ʺ w.c
(871.8 Pa)
0.05–5.0ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa), fixed
065493801
EFT
Entering fan air
temperature sensor
Senses entering fan air
temperature
N/A
Inlet of supply fan
N/A
N/A
N/A
060004705
FP1, 2
Frost protection
Senses DX coil temperature
for frost protection
Auto
DX coil
30° +/-6° open 45°
+/- 6° close
N/A
15°
113073401
FS1
Freezestat
Shuts fans OFF, opens
heating valve, and closes
outdoor damper if low
air temperature at coil is
detected
Auto
Heating section
38°F (3°C)
or as required
35°F–45°F
(2°C–7°C)
12°F
(7°C), fixed
065830001
HP1, 2
High pressure control
Stops compressor when
refrigerant discharge
pressure is too high
Manual
(relay
latched)
Condenser panel
See page 115
N/A
150 psi
403585001
LP1, 2
Low pressure control
Stops compressor when
suction pressure is too low
Auto
Condenser panel
See page 115
N/A
50 psi low ambient
option/
70 psi standard
910139364
MCB
Main control board
Processes input information
N/A
Main control box
N/A
N/A
N/A
060006101
MF3, 4
Cooling fan
Ventilate VFD box
N/A
VFD box
N/A
N/A
N/A
910147046
MP1–6
Compressor motor
protector
Senses motor winding
temperature, shuts
compressor OFF on high
temperature
Auto at 3400
ohms
Compressor
junction box
9 K–18 K ohms
700 ohms cold
N/A
044691509
OAE
Enthalpy control
(electromechanical)
Returns outside air dampers
to minimum position when
enthalpy is too high
Auto
Economizer
section
“B” or as required
A–D
Temperature: 3.5°F
(2°C) Humidity: 5%
fixed
030706702
Enthalpy control
(electronic)
Returns outside air dampers
to minimum position when
outside air enthalpy is
higher than return air
enthalpy (use RAE)
Auto
Economizer section
Fully CW past “D”
(when used with
RAE)
A–D
N/A
N/A
049262201
OAT
Outside air
temperature sensor
Senses outside air
temperature
N/A
N/A
N/A
N/A
N/A
060004705
OOS
Optical Oil Sensor
Sense oil level
N/A
Compressor sump
N/A
N/A
N/A
910150291
PC5
Dirty filter switch
Senses filter pressure drop
Auto
First filter section
As required
0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa)
065493801
PC6
Dirty filter switch
Senses filter pressure drop
Auto
Final filter section
As required
0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa)
065493801
PC7
Airflow proving switch Senses supply fan pressure
to prove airflow
Auto
Supply fan section
0.10ʺ w.c.
(25 Pa)
0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa), fixed
060015801
PT1, 2
Pressure transducer
Sense high side pressure
N/A
Condenser panel
N/A
0–700 psig
N/A
910153045
RAE
Return air enthalpy
sensor
Used to compare return
air enthalpy to outside air
enthalpy (used with OAE)
N/A
Economizer section
N/A
N/A
N/A
049262202
RAT
Return air temperature
sensor
Senses return air
temperature
N/A
Return air section
N/A
N/A
N/A
060004705
SD1
Smoke detector,
supply air
Initiates unit shutdown if
smoke is detected
Manual
Discharge air
section
N/A
N/A
N/A
04925001
SD2
Smoke detector,
return air
Initiates unit shutdown if
smoke is detected
Manual
Return air section
N/A
N/A
N/A
04925001
SPS1
Static pressure sensor
duct #1
Converts static pressure
signals to voltage signals
N/A
Main control box
N/A
0–5ʺ w.c. (0–1245.4
Pa) 1–6 V (dc) out
N/A
049545007
SPS2
Static pressure sensor
duct #2
Converts static pressure
signals to voltage signals
N/A
Main control bo
N/A
0–5ʺ w.c. (0–1245.4
Pa) 1–6 V (dc) out
N/A
049545007
Static pressure sensor:
building (space)
pressure
Converts static pressure
signals to voltage signals
N/A
Main control box
N/A
-025–0.25ʺ w.c.
(-62.3–62.3 Pa)
1–5 V (dc) out
N/A
049545006
S1
System switch
Shuts off entire control
circuit (except crankcase
heaters)
N/A
Main control box
N/A
N/A
N/A
001355000
S7
ON-OFF-AUTO switch Used to manually switch unit
N/A
Main control box
N/A
N/A
N/A
—
SV1-2
Drop solenoid
Shuts liquid line when
compressor is OFF
N/A
Discharge air
section
N/A
N/A
N/A
049266502
SV9, 10
Splitter solenoid valve Control refrigerant flow
N/A
Condenser
Normally open
Open at 350 psig
Close at 250 psig
N/A
—
SV11
OIV injection solenoid Direct oil in compressor
N/A
Compressor
Normally closed
N/A
Activated above
50 rps
910150289
Содержание RDT
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