Daikin RDT Installation And Maintenance Manual

MaInTenanCe
www.DaikinApplied.com 141 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Field Wiring Terminals
All eld wiring terminals are spring clamp type, which offer
several advantages over traditional screw-type terminals:
• Spring connections do not require torquing
• Spring connections resist failure due to vibration
• Easily identiable terminal markers
• Combination spring release and square test ports Wire
connections require inserting (“1” in Figure 135 a stripped
wire a round port and clamping the stripped wire by
inserting a at-bladed screw driver in the adjacent square
port (“2” in Figure 135).
Figure 135: Terminal Connectors
Phase Voltage Monitor (PVM)
The phase voltage monitor (Figure 129)is designed to
protect three-phase loads from damaging power conditions.
A microprocessor-based voltage and phase sensing circuit
constantly monitors the three-phase voltages to detect harmful
power line conditions. When a harmful condition is detected,
its output relay is deactivated after a specied trip delay (Trip
Delay). The output relay reactivates after power line conditions
return to an acceptable level for a specied amount of time
(Restart Delay). The trip and restart delays prevent nuisance
tripping due to rapidly uctuating power line conditions.
There are two LEDs on the face of the PVM (“1” in Figure 129)
to indicate the following:
Table 36: LED Indication
Status LED Indicator
Normal operation, no faults, relay
energized
Green LED: steady ON
Loss of input phase (relay de-energized)
Red LED: ash twice, OFF, ash
twice, OFF, etc.
Voltage unbalance (relay de-energized)
Red LED: ash twice, OFF, ash
twice, OFF, etc.
High or low voltage (relay de-energized) Red LED: steady ON
Phase reversal (relay de-energized)
Red LED: pulse ON, OFF, ON,
OFF, etc.
Restart delay (fault cleared, PVM
pending restart, relay de-energized)
Green LED: pulse ON, OFF, ON,
OFF, etc.
Other features:
• Standard 2% to 8% variable voltage unbalance (“3” in
Figure 136).
• Standard 1 to 500 second variable restart delay (“2” in
Figure 136).
• Standard 1 to 30 second trip delay (“4” in Figure
136) (except loss of phase, which trips at 1 second
nonadjustable).
Figure 136: Phase Voltage Monitor

Daikin RDT Specifications

General

Brand	Daikin
Model	RDT
Category	Air Conditioner
Language	English