Natural Gas to Propane Conversion Instructions

12 AG--KC019SNP--02
Specifications subject to change wi thout notice.
Variable Speed Blower, Two--Stage Gas Valve
Figure 19 Example of Variable Speed Furnace Control for ECM (VCA) Blower Motor
24-V THERMOSTAT
TERMINALS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
AND ECM BLOWER
HARNESS CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
COMMUNICATION
CONNECTOR
CONTINUOUS FAN
(C
F) AIRFLOW
SETUP SWITCHES
OUTDOOR
A
IR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24
-
VAC
0.5 AMP MAX.
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SW4 SETUP
SWITCHES
SOFTWARE
VERSION
PART NUMBER AND
DATE CODE WWYY
Representative drawing only, some models may vary in appearance.
24-V THERMOSTAT
TERMINALS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(
115-VAC 1.0 AMP MAX.
)
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
COMMUNICATION
CONNECTOR
AIR CONDITIONING (A/C) &
CONTINUOUS FAN (CF)
AIRFLOW SETUP SWITCHES
OUTDOOR
AIR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.)
ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SOFTWARE
VERSION
L14F003
Representative drawing onl y, some models may vary in appearance.
1. Turn Setup Switch SW1 --2 on furnace c ontrol ON (See
Figure 19).
2. Jumper R--W/W1 and R --W2 thermostat connections on
control.
3. When main burners ignite, confirm inlet gas pressure is
between 12.0--in. w.c. and 13.6 --in. w.c.
4. Remove jumper across R --W/W1 and R--W2 thermostat
connections to terminate call for heat.
5. Turn furnace gas valve switch to OFF position.
6. Turn gas supply manual shutoff valve to OFF position.
7. Turn off furnace power supply.
8. Remove manometer and on some models remove
pressure tap fitting.
9. On some models, apply pipe dope sparingly to the end of
inlet gas pipe plug and install into unused end of 1/8--in.
(3 mm) tee. Use a small back --up wrench on tee when
tightening gas inlet pipe plug. Or, on some models, tighten
set screw on inlet tower pressure tap with a 3/32--in. hex
wrench. (See Figure 11)