17
XIII. INDOOR AIR FLOW DATA
Belt-drive blower models have motor sheaves set for proper CFM at a typical external
static. See airflow tables for blower performance.
XIV.CRANKCASE HEAT
Crankcase heat is not standard. The auxiliary switch on the compressor turns off the
heater when the compressor is running.
XV. PRE-START CHECK
1. Is unit properly located and slightly slanted toward indoor condensate drain?
2. Is ductwork insulated, weatherproofed, with proper spacing to combustible materi-
als?
3. Is air free to travel to and from outdoor coil? (See Figure 5.)
4. Is the wiring correct, tight, and according to unit wiring diagram?
ST-A1125-10B
FIGURE 18
ST-A1125-04B
FIGURE 19
RUN THERMOSTAT
WIRING IN THIS
CHASE TO
CONTROL
BOARD
(2) CAP PLUGS
BASE
CONTROL
ENTRY
BASE
POWER
ENTRY
FIGURE 17
THERMOSTAT CONNECTIONS DIAGRAMS
R Y1 Y2 G C
TERMINAL BLOCK
ST-A1125-36-00
ONLY USED
ON DUAL
FUEL OR HEAT
PUMP
MODELS
IFC BOARD LOW VOLTAGE
THERMOSTAT CONNECTIONS
W3 B
A1 A2
W1 W2
R Y1 Y2 G C
E W B
J2
NOTE: Y2 IS ONLY NECCESSARY FOR ECONOMIZER OPERATION
STANDARD WIRING
R Y1 Y2 G C
ST-A1125-37-00
ONLY USED
ON DUAL
FUEL OR HEAT
PUMP
MODELS
IFC BOARD LOW VOLTAGE
THERMOSTAT CONNECTIONS
W3 B
A1 A2
W1 W2
R Y1 Y2 G C
E W B
NOTE:
REMOVE PURPLE JUMPER J1 FROM IFC QUICK CONNECT TERMINALS.
REMOVE WHITE JUMPER J2 FROM A1 TO A2 THERMOSTAT CONNECTIONS.
REMOVE JUMPER AT THERMOSTAT SUBBASE FROM E TO W.
Y2 IS ONLY NECCESSARY FOR ECONOMIZER OPERATION.
ALTERNATE LOW VOLTAGE WIRING WITH OUTDOOR THERMOSTAT
WHITE
BLACK
BLUE
BROWN
RED
-XPT-A04 OUTDOOR
DUAL THERMOSTAT
WITH ELECTRIC HEAT
RELAY
Summary of Contents for RJNL-B SERIES
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Page 26: ...26 NOTE 15 TON UNIT DOES NOT HAVE OFM 2 5...
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