8
PRODUCT DESIGN
For installaions in Canada, the GMH8 furnace is certified only to 4,500 ft.
* Negative pressure readings are in inches of water column (*w.c.)
MODEL
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
ID BLOWER
PRESSURE
SWITCH
PART #
MODEL
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
ID BLOWER
PRESSURE
SWITCH
PART #
GMH80453AN**
-0.60
B1370142
GMH80453AN**
-0.60
B1370142
GMH80703AN**
-0.60
B1370142
GMH80703AN**
-0.60
B1370142
GMH80704BN**
-0.60
B1370142
GMH80704BN**
-0.47
B1370176
GMH80903BN**
-0.60
B1370142
GMH80903BN**
-0.75
B1370179
GMH80904BN**
-0.60
B1370142
GMH80904BN**
-0.75
B1370179
GMH80905CN**
-0.70
B1370158
GMH80905CN**
-0.60
B1370142
GMH81155CN**
-0.70
B1370158
GMH81155CN**
-0.70
B1370158
GMH81405DN**
-0.75
013070159
GMH81405DN**
-0.60
013070142
PRESSURE SWITCH TRIP POINTS
AND USAGE CHART
SQUARE NOSE
ROUND NOSE
PRESSURE SWITCH TRIP POINTS
AND USAGE CHART
Part Number
B1370145
Open Setting (°F)
300
GMH80453AN**
2
GMH80703AN**
2
GMH80704BN**
2
GMH80903BN**
2
GMH80904BN**
2
GMH80905CN**
2
GMH81155CN**
2
GMH81405DN**
2
ROLLOUT LIMIT SWITCHES
Part Number
B1370155
Open Setting (°F)
120
GMH80453AN**
1
GMH80703AN**
1
GMH80704BN**
1
GMH80903BN**
1
GMH80904BN**
1
GMH80905CN**
1
GMH81155CN**
1
GMH81405DN**
1
AUXILIARY LIMIT SWITCHES
Part Number
B1370190 B1370187 B1370188 B1370198 B1370189
Open Setting (°F)
210
160
170
150
200
GMH80453AN**
1
---
---
---
---
GMH80703AN**
---
1
---
---
---
GMH80704BN**
---
---
1
---
---
GMH80903BN**
---
---
---
1
---
GMH80904BN**
---
---
1
---
---
GMH80905CN**
---
---
---
---
1
GMH81155CN**
---
---
---
1
---
GMH81405DN**
---
---
---
1
---
T.O.D. PRIMARY LIMIT
