McQuay RPS User Manual

IM-738 Page 45
In compliance with the National Electrical Code, an electri-
cally isolated 115V circuit is provided in the unit to supply the
factory mounted service receptacle outlet and optional unit
lights. This circuit is powered by a field connected 15A, 115V
power supply. Leads are brought into the RFS and RPS units
through a 7/8" knockout in the bottom of the main control
panel, near the power wire entry point.
Note: The National Electrical Code requires that this 115V cir-
cuit be protected by a ground fault circuit interrupter (GFI)
device (field supplied).
Fan Trol
FanTrol is provided on all units and is a method of head pres-
sure control which 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 & RCS units have two independent refrigerant cir-
cuits with one to four condenser fans being controlled indepen-
dently by the ambient air temperature of each circuit. See the
following sections for sequence of operation for condenser
fans with FanTrol.
Table 14: FanTrol Setpoints in °F with MicroTech II Controls
Table 15: FanTrol Setpoints - units with no Controls - Or pre-MicroTech II Controls
WARNING
Electrical shock hazard.
May cause severe injury or death.
All protective deadfront panels must be reinstalled and
secured when power wiring is complete.
RPS RCS
RDT RPR
B05 B06 B07 B08
Setpoint Differential Setpoint Differential Setpoint Differential Setpoint Differential
015 0 5 605 ————
018 0 5 605 ————
020 0 5 605 ————
025 0 5 655 ————
030 0 5 655 ————
036 0 5 705 ————
040 0 5 655 ————
045 0 5 655 ————
050 0 5 605 ————
060 05255705——
070 05255705——
070 scroll 05405705——
075 0565575505
Unit Size Compressor Control ID. Cut Out - °F Cut In - °F Differential - °F Description
018C Scroll TC12 60 66 6 Adjustable Setpoints
020C Scroll TC12 60 66 6 Adjustable Setpoints
025C Scroll TC12 60 66 6 Adjustable Setpoints
030C Scroll TC12 60 66 6 Adjustable Setpoints
036C Scroll TC12 60 66 6 Adjustable Setpoints
040C Scroll TC12 60 66 6 Adjustable Setpoints
045C Scroll TC12 60 66 6 Adjustable Setpoints
050C Scroll TC12 60 66 6 Adjustable Setpoints
060C Scroll TC12 60 66 6 Adjustable Setpoints
070C Scroll
TC12 65 74 9 Adjustable Setpoints
35 40 5 Adjustable Setpoints
075C Scroll
TC13 52 57 5 Adjustable Setpoints
TC14 70 80 10 Adjustable Setpoints

McQuay RPS Specifications

General

Brand	McQuay
Model	RPS
Category	Air Handlers
Language	English