Natural Gas to Propane Conversion Instructions
AG--KC019SNP--02 13
Specifications subject to change wi thout notice.
Fixed Speed Blower (FCT), Two--Stage Gas Valve
Figure 20 Example of Two--Stage Furnace Control
TEST / TWIN
HUM
PLT
PL1
W2 Y1 DHUM G COM W/W1 Y/Y2 R
24V
FUSE 3--AMP
EAC-- 2
EAC-- 1
L1 BL --1 XFMR
L2
COM
HI HT
COOL
LO H T
SPARE 1
24V MTR TAPS
BLOWER SPEED
TERMINALS
115--VAC (L2)
NEUTRAL
CONNECTIONS
LED OPERATION
& DIAGNOSTIC LIGHT
3--AMP FUSE
24--V THERMOS TAT
TERMINALS
SET UP SWITCHES
THERMOSTAT TYPE (TT)
AND HEAT OFF-- DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
HUMIDIFIER TERMINAL
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
P--1 LOW VOLTAGE
P2 -- HOT SURFACE
IGNITER/INDUCE R
MOTOR CONNECTION
11 5 VA C
BLOWER POWER (BL1)
CONNECTION
115 VAC LINE (L1)
INPUT
TT
OFF
DLY
ON
OFF
123
IDR
HSIR
IDM
IHI/LOR
PL2
1
HSI HI LO
1
EAC TERMINAL
115 VAC 1.0 AMP
MAX
11 5 VA C
TRANSFORMER
PRIMARY
SPARE 2
HUM
115 VAC HUM
COM/BLUE 24VAC/RED
COM
24V
24VAC
Representative drawing onl y, some models may vary in appearance.
TEST / TWIN
HUM
PLT
SEC-2 SEC-1
COM 24VAC
PL1
W2 Y DHUM G COM W/W1 Y/Y2 R
24V
FUSE 3-AMP
EAC-2
EAC-1
L1 BL-1 PR-1
L2
COM
HI HT
COOL
LO HT
SPARE 2
24V MTR
TAP S
BLOWER SPEED
TERMINALS
115-VAC (L2)
NEUTRAL
CONNECTIONS
LED OPERATION
& DIAGNOSTIC LIGHT
3-AMP FUSE
24-V THERMOSTAT
TERMINALS
SET UP SWITCHES
LOW HEAT ONLY
AND BLOWER
OFF-DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
ACRDJ - AIR CONDITIONING
RELAY DISABLE JUMPER
HUMIDIFIER TERMINAL
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
PL1-LOW VO
LTAGE
MAIN HARNESS CONNEC
TOR
PL2 - HOT SURFACE
IGNITER/INDUCER
MOTOR CONNECTION
115 VAC
BLOWER POWER (BL1)
CONNECTION
115 VAC LINE (L1)
INPUT
LHT
OFF
DLY
ON
OFF
1 2 3
IDR
HSIR
IDM
IHI/LOR
PL2
1
HSI HI LO
1
EAC TERMINAL
115 VAC 1.0 AMP MAX
115 VAC
TRANSFORMER
PRIMARY
SPARE 1
Representative drawing onl y, some models may vary in appearance.
1. Turn Setup Switch SW1 (LHT or TT) on furnace control
ON (see Figure 20).
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 no more than one
full turn with a 3/32 --in. hex wrench. (see Figure 11)