Carrier 50PG20 User Manual

38
Table 36 — Service Test Modes and Submodes Directory
THIRD PARTY CONTROL
Third party controls may interface with the unit
ComfortLink™ controls through the connections described
below. See other sections of these instructions for more
information on the related unit control configurations.
Thermostat — The thermostat inputs are provided on the
field connection terminal board (TB2). The Thermostat
Control Type configuration, Configuration
→ UNIT → T.CTL,
selects the unit response to these inputs.
Y1 = first stage cooling
Y2 = second stage cooling
W1 = first stage heating
W2 = second stage heating
G = indoor fan
Humidistat — For units with the factory Humidi-MiZer™
option, the humidistat input is provided on the field connection
terminal board (TB2). The Space Humidity Switch configura-
tion, Configuration
→ UNIT → RH.SW, identifies the normally
open or normally closed status of this input at high humidity.
Humidistat 1 = 24 VAC signal input
Humidistat 2 = 24 VAC source for dry contact
Humidity Sensor — For units with the factory Humidi-
MiZer option and the economizer option with the ECB (econo-
mizer control board), the humidity sensor input is provided on
the field connection terminal board (TB2). The sensor can be
used instead of a humidistat. The RH Sensor on OAQ Input
configuration, Configuration
→ UNIT → RH.S=YES, identi-
fies the sensor use. Default conversion to 0 to 100% relative
humidity can be changed in the configurations.
4 = 4-20 mA + signal input
3 = 4-20 mA – common
Remote Occupancy — The remote occupancy input is
provided on the field connection terminal board (TB2). The
Remote Occupancy Switch configuration, Configuration
→ UNIT → RM.SW, identifies the normally open or normally
closed status of this input when unoccupied.
5 = 24 VAC signal input
6 = 24 VAC source for dry contact
Fire Shutdown — The fire shutdown input is provided
for unit shutdown in response to a fire alarm or smoke detector.
The Fire Shutdown Switch configuration, Configuration
→ UNIT → FS.SW, identifies the normally open or normally
closed status of this input when there is no fire alarm.
For 48/50 units without Humidi-MiZer system, input at field
connection terminal board (TB2)
Fire Shutdown 1 = 24 VAC source for dry contact
Fire Shutdown 2 = 24 VAC signal input
For 50 series units with Humidi-MiZer system, input at wire
harness plug 19 (PL 19)
PL 19-3 = 24 VAC source for dry contact
PL 19-5 = 24 VAC signal input for fire shutdown
For 48 series units with Humidi-MiZer system, input at wire
harness plug 19 (PL 19)
PL 19-3 = 24 VAC source for dry contact
PL 19-5 = 24 VAC signal for Fire Shutdown
PL 19-4 = 24 VAC power for indoor fan contactor control
circuit
NOTE: For 48 series units with Humidi-MiZer system, if the
indoor fan must be shut down without any delay upon Fire
Shutdown input, then the factory jumper between PL19-3 and
PL19-4 must be replaced with a normally closed contact when
there is no alarm (open with alarm).
Alarm Output — The alarm output is provided on the
field connection terminal board (TB2) to indicate a current
alarm status. The output will be 24VAC if a current alarm
exists.
C = 24 VAC common
X = 24 VAC signal output
Outdoor Enthalpy — For units with the economizer
option or accessory and the ECB control board, the outdoor
enthalpy input is provided on the field connection terminal
board (TB2). The Enthalpy Switch configuration, Configura-
tion
→ ECON → EN.SW, identifies the normally open or
normally closed status of this input when the outdoor enthalpy
is low.
6 = 24 VAC source for dry contact
7 = 24 VAC signal input
DISPLAY MENU/
SUB-MENU/NAME
EXPANDED
NAME
VALUES UNITS DEFAULT
CCN TABLE/
SUB-TABLE
CCN
NAME
SERVICE TEST MAINTENANCE DISPLAY
TEST Field Service Test Mode On/Off Off (TEST = display only)
INDP Test Independent Outputs TESTINDP
ECON Economizer Position Test 0 to 100 % 0 S_ECONO
E.CAL Calibrate Economizer On/Off Off S_ECOCAL
PE.1 Power Exhaust 1 Test On/Off Off S_PE_1
PE.2 Power Exhaust 2 Test On/Off Off S_PE_2
ALRM Alarm Relay Test On/Off Off S_ALMOUT
CCH Crankcase Heat Test On/Off Off S_CCH
FANS Test Fans TESTFANS
IDF Indoor Fan Test On/Off Off S_IDF
OFC.1 Outdoor Fan 1 Test On/Off Off S_OFC_1
OFC.2 Outdoor Fan 2 Test On/Off Off S_OFC_2
OFC.3 Outdoor Fan 3 Test On/Off Off S_OFC_3
COOL Test Cooling TESTCOOL
CMP.A Cool A Test On/Off Off S_COMP_A
CMP.B Cool B Test On/Off Off S_COMP_B
CMP.C Cool C Test On/Off Off S_COMP_C
OF.OV Outdoor Fan Override On/Off Off S_OFC_OV
HMZR Test Humidimizer TESTHMZR
RH1.A Reheat1 A Test On/Off Off S_RH1_A
RH1.B Reheat1 B Test On/Off Off S_RH1_B
RH1.C Reheat1 C Test On/Off Off S_RH1_C
RH2.A Reheat2 A Test On/Off Off S2_RH2_A
RH2.B Reheat2 B Test On/Off Off S2_RH2_B
RH2.C Reheat2 C Test On/Off Off S2_RH2_C
CRC Cool->Reheat1 Valve Test On/Off Off S_CRC
RHV.A Reheat2 Valve A Test On/Off Off S_RH2_A
RHV.B Reheat2 Valve B Test On/Off Off S_RH2_B
HEAT Test Heating TESTHEAT
HT.1 Heat Stage 1 Test On/Off Off S_HEAT_1
HT.2 Heat Stage 2 Test On/Off Off S_HEAT_2

Carrier 50PG20 Specifications

General

Brand	Carrier
Model	50PG20
Category	Air Conditioner
Language	English