Daikin RDT, Руководство по установке и обслуживанию, Страница: 16 / 152

IM 893-10 • ROOFPAK SINGLEZONE UNITS 16 www.DaikinApplied.com
I
nTroduCTIon
FanTrol
The FanTrol, provided on all units, is a method of head
pressure control that automatically cycles the condenser fans
in response to ambient air temperature. This feature maintains
head pressure and allows the unit to run at low ambient air
temperatures.
RPS/RDT and RCS units have two independent refrigerant
circuits with one to four condenser fans being controlled
independently by the ambient air temperature of each circuit.
See the following sections for sequence of operation for
condenser fans with FanTrol.
FanTrol does not apply to units with VFD compressors.
Table 3: R-410A FanTrol Setpoints in °F with
MicroTech III Controls.
Unit
Size
Degrees Farenheit
D07a D08b PC13/PC23c
Setpoint Differential Setpoint Differential Setpoint Differential
015 70 5
016 75 5
020 70 5
021 75 5
025 60 5
026 70 5
030 75 5
031 75 5
035 70 5
040 65 5
042 65 5
045 65 5
050 65 5
051 70 5
061 60 5
063 70 5
068 70 5
070 75 5 90 35
071 75 5 90 35
075 65 5 85 5 90 35
079 65 5 80 5 90 35
080 75 5 90 35
081 75 5 90 35
085 70 5 90 35
090 60 5 85 5 90 35
091 60 5 85 5 90 35
100 60 5 85 5 90 35
101 60 5 85 5 90 35
105 50 5 80 5 90 35
110 65 5 90 5 90 35
120 65 5 85 5 90 35
125 65 5 85 5 90 35
130 60 5 85 5 90 35
140 55 5 80 5 90 35
a. D07 = TC12
b. D08 = TC14
c. PC13/23 Cut in = 450 psig (125 degree sat.), fixed
Cut out = 275 psig (90 degree sat.), fixed