5
PRODUCT DESIGN
quired due to the natural reduction in the density of both the
gas fuel and combustion air as altitude increases. The kit
will provide the proper design certified input rate within the
specified altitude range.
High altitude kits are purchased according to the installa-
tion altitude and usage of either natural or propane gas. Refer
to the chart above for a tabular listing of appropriate altitude
ranges and corresponding manufacturer’s high altitude Natu-
ral Gas and Propane Gas kits. For a tabular listing of appro-
priate altitude ranges and corresponding manufacturer's High
Altitude Pressure Switch kits, refer to either the
Pressure
Switch Trip Points & Usage Chart
in this manual or the
Ac-
cessory Charts
in Service Instructions.
Single Stage Thermostat
A single-stage thermostat with only one heating stage may
be used to control this furnace. The application of a single-
stage thermostat does not offer “true” thermostat-driven two-
stage operation, but provides a
timed
transition from low to
high fire. The furnace will run on low stage for a fixed period
of time before stepping up to high stage to satisfy the
thermostat’s call for heat. The delay period prior to stepping
up can be set at either a fixed 5 minute time delay or a load
based variable time between 1 and 12 minutes (AUTO mode).
If the AUTOmode is selected, the control averages the cycle
times of the previous three cycles and uses the average to
determine the time to transition from low stage to high stage.
To use a single-stage thermostat, turn off power to the fur-
nace, move the thermostat selection DIP switch to the OFF
position. Set the desired transition time by setting the tran-
sition delay DIP switch to the desired ON/OFF position. Turn
power back on. Refer to the following figure.
3
4
Thermostat
Stage Delay
Move to the ON position
to select two-stage
thermostat or OFF to
select single stage
thermostat
Move to the ON position
to select Auto transition
delay or OFF for 5 minute
transition delay
Heat OFF Delay
DIP Switches
ON
OFF
S1
1
LPM-05* supports White-Rodgers 2-stage valves only
2
LPM-06* supports Honeywell and White-Rodgers 2-stage valves
Na
tu
ra
l
P
ropa
ne
Na
tu
ra
l
P
ropa
n
e
Na
tu
ra
l
Pr
o
p
a
n
e
GMV C95 0453 BX *
GM VC 9507 04C X*
AM VC9 5045 3B X*
A MV C95 0704 CX*
No
Ch ange
LP M-05 *
(1)
LP M-06 *
(2)
# 55 Orif ice
No
Chan ge
HANG13
# 44
Orifice
HA LP11
#56
Orifice
HAP S 28
HA NG14
# 45
Orif ice
HA LP1 1
#56
Orifice
HAP S2 8
GM VC 9509 05C X*
A MV C95 0905 CX*
No
Ch ange
LP M-05 *
(1)
LP M-06 *
(2)
# 55 Orif ice
No
Chan ge
N /A
N/A
N/A
N/ A
N /A
N/A
GM VC 9509 05D X*
GM VC 9511 55D X*
A MV C95 0905 DX*
A MV C95 1155 DX*
No
Ch ange
LP M-05 *
(1)
LP M-06 *
(2)
# 55 Orif ice
No
Chan ge
HANG13
# 44
Orifice
HA LP11
#56
Orifice
HAP S 29
HA NG14
# 45
Orif ice
HA LP1 1
#56
Orifice
HAP S2 9
GCV C90 704 CX*
GCV C90 905 DX*
GCV C91 155 DX*
A CVC 9070 4CX *
A CVC 9090 5DX *
No
Ch ange
LP M-05 *
(1)
LP M-06 *
(2)
# 55 Orif ice
No
Chan ge
HANG13
# 44
Orifice
HA LP11
#56
Orifice
HAP S 29
HA NG14
# 45
Orif ice
HA LP1 1
#56
Orifice
HAP S3 1
GCV C95 0714 CX*
GCV C95 0915 DX*
A CVC9 507 14CX *
A CVC9 509 15DX *
No
Ch ange
LP M-05 *
(1)
LP M-06 *
(2)
# 55 Orif ice
No
Chan ge
N /A
N/A
N/A
N/ A
N /A
N/A
ID Blw r
P res sure
Sw itc h
Gas Orifice s
9 ,001 - 11,0 00 Fe et
"S TANDARD" and "HIGH ALTITUDE " K ITS
Furnace
ID B lwr
P re ssure
S witch
Ga s Ori fi ces
0 - 7,00 0 Fee t
(Standard Altitude)
7,00 1 - 9,0 00 Fe et
Ga s Orific es
ID Bl wr
P res sure
Switch
