Component Locations
Panels omitted for clarity
Fig. 1: Component Locations – Side
Panels omitted for clarity
Fig. 2: Component Locations – Front
Fig. 3: Component Locations – Rear
Top panel, blower and gas train omitted for clarity
Fig. 4: Component Locations – Top
General Information
MBTUH
Model
Input
No.
Max.
Min.
503A
500
70
753A
750
105
1003A
999
140
1253A
1250
175
1503A
1500
210
1753A
1750
245
2003A
1999
280
Table A: Basic Data
6
Gas
Vent Size
Water
Conn.
(in.)
Conn.
(NPT)
(NPT)
N
P
Flue
2
1
1
6
2
1
1
6
2-1/2
1-1/4 1
6
2-1/2
1-1/4 1
8
2-1/2
1-1/4 1
8
2-1/2
2
1
8
2-1/2
2
1
8
Intake
6
6
6
8
8
8
8