
8 Rev. 2
PRODUCT DESIGN
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
GUSA070BX35
GUSA090BX40
GUSA090BX50
GUSA115BX50
-0.35 -0.70 -0.35 -0.70 -0.55 -0.65 -0.55 -0.65
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
MODEL
NEGATIVE
RESSURE
D BLOWER
WITH FLUE
OT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
RESSURE
D BLOWER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
RESSURE
OIL COVER
WITH FLUE
OT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
RESSURE
OIL COVER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
LOW
FIRE
HIGH
FIRE
GUSA070BX35
GUSA090BX40
GUSA090BX50
GUSA115BX50
-0.37 -0.37 20197305 -0.20 -0.55 11177117 GREEN PURPLE -0.37 -0.37 -0.15 -0.46
HAPS30
11177119
YELLOW PINK
ote:
All negative pressure readings are in inches of water column (" w.c.).
MODEL
PS2
LABEL
COLOR
Note:
All installations above 7,000 ft. require a pressure switch change. For installations in Canada the GUSA furnace is certified only to 4500 feet.
Note:
Replacement pressure switch number is listed below high altitude kit number.
RIP POINT
COIL COVER
PRESSURE
SWITCH
RIP POINT
ID BLOWER
PRESSURE
SWITCH
HIGH
ALTITUDE
KIT
PS1
LABEL
COLOR
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
0 to 7,000 ft. 7,001 ft. to 11,000 ft.
RIP POINT
COIL COVER
PRESSURE
SWITCH
COIL
COVER
PRESSURE
SWITCH
PART #
RIP POINT
ID BLOWER
PRESSURE
SWITCH
D BLOWER
PRESSURE
SWITCH
PART #
PS1
LABEL
COLOR
PS2
LABEL
COLOR
PART NUMBER 10123535
OPEN SETTING (°F) 150
COLOR CODE(S) RED
GUSA070BX35
1
GUSA090BX40
1
GUSA090BX50
1
GUSA115BX50
1
AUXILIARY LIMIT SWITCHES
PART NUMBER 20162904 20162907
OPEN SETTING (°F) 150 155
COLOR CODE(S) BROWN ORANGE
GUSA070BX35
1
GUSA090BX40
1
GUSA090BX50
1
GUSA115BX50
1
T.O.D. PRIMARY LIMIT
PART NUMBER 10123533 10123534 10123537
OPEN SETTING (°F) 200 220 190
COLOR CODE(S) YELLOW ORANGE GRAY
GUSA070BX35
2
GUSA090BX40
2
GUSA090BX50
2
GUSA115BX50 2
ROLLOUT LIMIT SWITCHES
dimensions of Amana cca18fcc