Two- Stage Multi Position Furnace
Service Manual
52
440 08 2002 02
ALWAYS CHECK CURRENT TECHENICAL SUPPORT MANUAL
THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE
TECHNICAL SERVICE DATA *9MPT (A1 & A2)
Specifications
*9MPT050F12A
*9MPT075F14A
*9MPT100J16A
*9MPT125L20A
General
Gas Type
Nat
L.P.
Nat
L.P.
Nat
L.P.
Nat
L.P.
Transformer Size (VA)
T’stat Heat Anticipator
40
.10
Input (Btuh) Std/Alt.
Hi Fire
Lo Fire
Output (Btuh) Std/Alt. Hi Fire
Lo Fire
Temp. Rise (
°
F)
Hi Fire
Lo Fire
50,000
35,000
46,000
32,200
35--65
25--55
75,000
53,000
69,000
48,800
40--70
30--60
100,000
70,000
92,000
64,400
40--70
30--60
125,000
87,500
115,000
80,500
40--70
30--60
Electrical (Volts/Hz/FLA)
115/60/9.8
115/60/9.0
115/60/9.0
115/60/11.2
Gas & Ignition
Gas Type
Std. Main Orifices (No/Size)
Gas Valve (Honeywell)
Regulation Type
Manifold Press.
Hi Fire (
²
WC)
Lo Fire (
²
WC)
Pilot Orifice Size
Ignition Type/Series
Nat.
2/42
SV 9541
SNAP
3.5
1.7
.018
HSP
L.P.
2/54
SV 9541
SNAP
10.0
4.9
.011
HSP
Nat.
3/42
SV 9541
SNAP
3.5
1.7
.018
HSP
L.P.
3/54
SV 9541
SNAP
10.0
4.9
.011
HSP
Nat.
4/42
SV 9541
SNAP
3.5
1.7
.018
HSP
L.P.
4/54
SV 9541
SNAP
10.0
4.9
.011
HSP
Nat.
5/42
SV 9541
SNAP
3.5
1.7
.018
HSP
L.P.
5/54
SV 9541
SNAP
10.0
4.9
.011
HSP
Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (
°
F)
2
<140
2
<140
3
<140
3
<140
@ Blower
/
@ Transition Box (Hi Fire)
Std. Pressures (
²
of WC)
5
¢
No Elbows
40
¢
+5--90
°
DWV Elbows
@ Blower
/
@ Transition Box (Lo Fire)
Std. Pressures (
²
of WC)
5
¢
No Elbows
40
¢
+5--90
°
DWV Elbows
--1.80
/
--2.60
--1.30
/
--2.30
--1.20
/
--1.90
--1.00
/
--1.80
--1.80
/
--2.60
--1.30
/
--2.30
--1.20
/
--1.90
--1.00
/
--1.80
--1.80
/
--2.60
--1.70
/
--2.50
--1.20
/
--1.90
--1.00
/
--1.80
--1.80
/
--2.60
--1.70
/
--2.50
--1.30
/
--2.30
--1.20
/
--2.20
Fan Controls
Fan Control (Type)
Fan Control
On
(Timed--secs)
Off
HW ST9162A
30/60
60,100,140,180
Limits & Controls
Rollout Switch (
°
F)
Limit Control Setting (
°
F)
300
260
300
210
300
240
300
180
Std. Pressure Sw. (Part No)
Blower Switch Pressure (Close)
Blower Switch Pressure (Open)
Transition Switch Pressure (Close)
Transition Switch Pressure (Open)
1013515
0.95
0.80
1.70
1.50
1013515
0.95
0.80
1.70
1.50
1013515
0.95
0.80
1.70
1.50
1013166
1.30
1.10
1.80
1.60
High Altitude Pressure Sw. (Part No)
Blower Switch Pressure (Close)
Blower Switch Pressure (Open)
Transition Switch Pressure (Close)
Transition Switch Pressure (Open)
1013165
0.70
0.55
1.40
1.20
1013165
0.70
0.55
1.40
1.20
1013165
0.70
0.55
1.40
1.20
1013157
0.85
0.70
1.70
1.50
Blower Data
Type & Size
Motor Amps/Rpm
Motor Type/H.p.
Cap. Mfd/Volts
Filter Type
Cool Cap. (Tons) @ .5
²
W.C. L, ML, MHi &
Hi
11--8
10/1050
PSC/
1
/
2
10/370
16x25x1
1
1
/
2
,2,2
1
/
2
,3
11--10
10/1050
PSC/
1
/
2
10/370
16x25x1
1
1
/
2
,2,2
1
/
2
,3.5
11--10
10/1050
PSC/
1
/
2
10/370
16x25x1
2
1
/
2
,3,3
1
/
2
,4
11--10
13/900
PSC/
3
/
4
40/370
16x25x1 (2)
3
1
/
2
,4,4
1
/
2
,5
Gas Conversion Kits All Models
Nat to LP
NAHF002LP *1011789
LP to Nat
NAHF002NG *1011787
*Order from Service Parts