Carrier 48/50PG Series, Controls, Start-Up, Operation, Service And Troubleshooting Instructions

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Reheat2 ODF Fan On Temp (RF.ON)
This sets the Reheat2 mode change temperature to increased
outdoor fan level.
Reheat2 ODF Fan Off Temp (RF.OF)
This sets the Reheat2 mode change temperature to decrease
outdoor fan level.
Table 10 – Control Modes with Humidi--MiZer
t
System
Output and Valve States versus Circuit Mode .x = Circuit A, B, or C identifier
DEMAND AND MODE OUTPUTS 48/50PG03---16 VALVES
48/50PG20---28
48/50PM16---28
VALVES
Space
Humidity
Circuit
Cooling
Demand
Circuit
Mode
Indoor
Fan (IDF)
Circuit
Compressor
(CMP.x)
Cooling---
Reheat
Control
(CRC)*
Reheat2
Valve
(RH2.x)
CV.x
Valve
2---way
RH1.x
Valve
2---way
RH2.x
Valve
2---way
RH1.x
Valve
3---way
RH2.x
Valve
2---way
— —
No
power
OFF Off Off Off
Off
(open)
Off
(open)
Off
(closed)
Off
Off
(closed)
Low No Off
Per
Ventilation
Control
Off Off Off
Off
(open)
On
(closed)
Off
(closed)
Off
Off
(closed)
Low Yes Cool On On Off Off
Off
(open)
On
(closed)
Off
(closed)
Off
Off
(closed)
High Yes Reheat1 On On On Off
On
(closed)
Off
(open)
Off
(closed)
On
Off
(closed)
High No Reheat2 On On On On
On
(closed)
Off
(open)
On
(open)
On
On
(open)
COMP
COND COIL
HUMIDI-MIZER COIL
EVAP COIL
INDOOR ENTERING
AIR
OUTDOOR AIR
METERING
DEVICE
CLOSED VALVE
OPEN VALVE
3-WAY VALVE
RH1.x
RH2.x
CV.x
C07003
Fig. 9 -- Normal Cooling Mode — Humidi--MiZer
t
System
48/50PG03--16
48/
50P
G
and
P
M