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General Information
Table A: Basic Data
6
HIGH VOLTAGE
ELECTRICAL CONNECTIONS
Component Locations
Panels omitted for clarity
Fig. 1: Component Locations – Side
Top panel, blower and gas train omitted for clarity
Fig. 4: Component Locations – Top
Fig. 3: Component Locations – Rear
MBTUH
Input
Gas
Conn.
(NPT)
Vent Size
(in.)
Model
No.
Max. Min.
Water
Conn.
(NPT)
N P Flue Intake
503 500 125 2 1 1 6 6
753 750 188 2 1 1 6 6
1003 999 250 2-1/2 1-1/4 1 6 6
1253 1250 312 2-1/2 1-1/4 1 8 8
1503 1500 375 2-1/2 1-1/4 1 8 8
1753 1750 438 2-1/2 2 1 8 8
2003 1999 500 2-1/2 2 1 8 8
Panels omitted for clarity
Fig. 2: Component Locations – Front