International comfort products N9MP1 Service Manual page 17

Single Stage Multi Position Furnace
switch, and permit the burner to operate. As the condensate
drain begins to back−up, however, the pressure begins to
reduce. When the pressure drops sufficiently, burner opera-
tion will be prevented until the condition is corrected.
N9MP1 STANDARD TRANSITION SWITCH
MODEL PART #
050B12C 1013802
075B12C 1013802
080F16C 1013811
100F14C 1013801
100J20C 1013802
125J20C 1013166
N9MP1 STANDARD INDUCER SWITCH
MODEL PART #
125J20C 1013166
N9MP1 HIGH ALTITUDE TRANSITION SWITCH
MODEL PART #
050B12C 1013803
075F12C 1013803
080F16C 1013812
100F14C 1013803
100J20C 1013803
125L20C 1013157
N9MP1 HIGH ALTITUDE INDUCER SWITCH
MODEL PART #
125J20C 1013157
Figure 13
Pressure Switch
Pressure Port
440 08 2011 00
OPEN " W.C. CLOSE" W.C
−2 −2.2
−2 −2.2
−1.6 −1.8
−2.1 −2.3
−2 −2.2
−1.6 −1.8
OPEN " W.C. CLOSE " W.C.
−1.1 −1.3
OPEN " W.C. CLOSE " W.C.
−1.8 −2
−1.8 −2
−1.3 −1.5
−1.8 −2
−1.8 −2
−1.5 −1.7
OPEN " W.C. CLOSE " W.C.
−0.7 −0.9
Normally Open
Terminal
Common
Terminal
N9MP2 STANDARD TRANSITION SWITCH
MODEL PART #
050B12C 1013802
075B12C 1013801
080F16C 1013811
100F14C 1013801
100J20C 1013802
125J20C 1013166
N9MP2 STANDARD INDUCER SWITCH
MODEL PART #
125J20C 1013166
N9MP2 HIGH ALTITUDE TRANSITION SWITCH
MODEL PART #
050B12C 1013803
075F12C 1013803
080F16C 1013812
100F14C 1013803
100J20C 1013803
125L20C 1013157
N9MP2 HIGH ALTITUDE INDUCER SWITCH
MODEL PART #
125J20C 1013157
*9MPD STANDARD TRANSITION SWITCH
MODEL PART #
050B12C 1013802
075B12C 1013802
080F16C 1013812
100F14C 1013802
100J20C 1013802
125J20C 1013166
*9MPD STANDARD INDUCER SWITCH
MODEL PART #
125J20C 1013166
*9MPD HIGH ALTITUDE TRANSITION SWITCH
MODEL PART #
050B12C 1013803
075B12C 1013803
080F16C 1013813
100F14C 1013803
100J20C 1013803
125L20C 1013157
*9MPD HIGH ALTITUDE INDUCER SWITCH
MODEL PART #
125J20C 1013157
To insure continued SAFE, RELIABLE, operation NEVER
SUBSTITUTE a pressure switch with one that is similar in
Service Manual
OPEN " W.C. CLOSE" W.C
−2 −2.2
−2.1 −2.3
−1.6 −1.8
−2.1 −2.3
−2 −2.2
−1.6 −1.8
OPEN " W.C. CLOSE " W.C.
−1.1 −1.3
OPEN " W.C. CLOSE " W.C.
−1.8 −2
−1.8 −2
−1.3 −1.5
−1.8 −2
−1.8 −2
−1.5 −1.7
OPEN " W.C. CLOSE " W.C.
−0.7 −0.9
OPEN " W.C. CLOSE" W.C
−2 −2.2
−2 −2.2
−1.3 −1.5
−2 −2.2
−2 −2.2
−1.6 −1.8
OPEN " W.C. CLOSE " W.C.
−1.1 −1.3
OPEN " W.C. CLOSE " W.C.
−1.8 −2
−1.8 −2
−1 −1.2
−1.8 −2
−1.8 −2
−1.5 −1.7
OPEN " W.C. CLOSE " W.C.
−0.7 −0.9
17