Daikin RDT-135c Installation And Maintenance Manual page 21

Table 3: Controls, settings, and functions (continued)
Symbol Description
PC7 Airflow proving Senses supply fan pressure to
switch prove airflow
PS1, 2 Pumpdown switch Used to manually pump down
compressor
RAE Return air Used to compare return air
enthalpy sensor enthalpy to outside air
enthalpy (used with OAE)
RAT Return air Senses return air temperature
temperature
sensor
SD1 Smoke detector, Initiates unit shutdown if
supply air smoke is detected
SD2 Smoke detector, Initiates unit shutdown if
return air smoke is detected
SPS1 Static pressure Converts static pressure
sensor duct #1 signals to voltage signals
SPS2 Static pressure Converts static pressure
sensor duct #2 signals to voltage signals and
sends them to MicroTech II
controller
Static pressure Converts static pressure
sensor: building signals to voltage signals.
(space) pressure
SV1, 2 Solenoid valve Closes liquid line for
(liquid line) pumpdown
SV5, 6 Solenoid valve Closes hot gas bypass line for
(hot gas bypass) pump-down
S1 System switch Shuts off entire control circuit
(except crankcase heaters)
S7 ON-OFF-AUTO Used to manually switch unit
switch
IM 738-2
Function Reset
Auto
N/A
N/A
N/A
Manual Discharge air
Manual
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Introduction: Controls, Settings, and Functions
Location Setting
Supply fan .10" w.c. (25 Pa)
section
Condenser N/A
control box
Economizer N/A
section
Return air N/A
section
N/A
section
Return air N/A
section
Main control N/A
box
Main control N/A
box
Main control N/A
box
Condenser N/A
section
Condenser N/A
section
Main control N/A
box
Main control N/A
box
Range Differential
.05-5" w.c. .05" w.c.
(12.5–1245.4 Pa) (12.5 Pa), fixed
N/A N/A
N/A N/A
N/A
N/A N/A
N/A N/A
0–5" w.c. N/A
(0–1245.4 Pa)
1–6 VDC out
0–5" w.c. N/A
(0–1245.4 Pa)
1–6 VDC out
-025–0.25" w.c. N/A
(-62.3–62.3 Pa)
1–5 VDC out
N/A N/A
N/A N/A
N/A N/A
N/A N/A
Part no.
060015801
01355000
049262202
060004705
04925001
04925001
049545007
049545007
049545006
See parts
catalog
111011001
001355000
19