TABLE OF CONTENTS
TABLE OF CONTENTS
Important Safety Information ..............................................................................................................................3
Product Features................................................................................................................................................4
Preparing for Installation.....................................................................................................................................5
Installation ........................................................................................................................................................9
Operation .........................................................................................................................................................15
Care and Maintenance .................................................................................................................................19
Troubleshooting .................................................................................................................................20
Replacement Parts.............................................................................................................................22
WARNING: READ THE INSTALLATION & OPERATION INSTRUCTIONS BEFORE USING THIS APPLIANCE.
IMPORTANT: Read this owner's manual carefully and completely before trying to assemble, operate, or service this
heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, and carbon
monoxide poisoning.
PRODUCT SPECIFICATIONS
MODEL
Gas Type
Natural Only
Input rating (BTU/Hr)
MAX.
30,000
MIN.
15,000
Ignition
Electric Piezo
Pressure
Regulator
4 in. W.C.
Setting
Inlet Gas Pressure* (inches of water) *For purpose of input adjustment
Maximum
10.5 in.
Minimum
5 in.
Dimensions, Inches (H x W x D)
Heater
23 1/2 x 26 5/8 x 8
Carton
26 1/2 x 28 1/2 x 9 1/4
Weight (Pounds)
Heater
27.6
Shipping
32.6
MD300HGA
Propane/LP Only
28,000
14,000
Electric Piezo
9 in. W.C.
14 in.
11 in.
23 1/2 x 26 5/8 x 8
26 1/2 x 28 1/2 x 9 1/4
27.6
32.6
MD300TGA
Natural Only
30,000
15,000
Electric Piezo
4 in. W.C.
10.5 in.
5 in.
23 1/2 x 26 5/8 x 8
26 1/2 x 28 1/2 x 9 1/4
29.6
34.6
Propane/LP Only
28,000
14,000
Electric Piezo
9 in. W.C.
14 in.
11 in.
23 1/2 x 26 5/8 x 8
26 1/2 x 28 1/2 x 9 1/4
29.6
34.6
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