A.O. Smith FMD 30, FMD 40, FMV-30, FMD 50, FMV-40 Technical Documents

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Residential Gas Water Heaters

ENERGY SAVER MANUFACTURED HOUSING STANDARD VENT AND DIRECT VENT MODELS

COMPLIES WITH HUD STANDARDS FOR MANUFACTURED HOUSING INSTALLATION

■ Meets the Federal Energy Efciency Standards effective January 20, 2004,

according to the National Appliance Energy Conservation Act (NAECA) of 1992.

FLAMMABLE VAPOR IGNITION RESISTANT (FVIR) COMPLIANT

GAS CONTROL CONVERTIBLE FOR NATURAL AND PROPANE GAS

■ For exibility to meet the varying needs of Manufactured Housing installations.

SIDE-MOUNTED 3/4˝ COLD WATER INLET

■ For ease of installation when cold water supply originates below the structure.

Top mounted 3/4˝ hot water outlet.

DIRECT VENT MODELS PACKAGED WITH BOTTOM INTAKE AIR VENT

■ To draw all combustion make-up air from outside the structure.

OPTIONAL DUCTED AIR INLET KIT FOR DIRECT VENT MODELS

■ For use when water heater is installed over a basement. Provision for horizontal

air inlet ducting. See instruction manual for approved venting distance by model.

GREEN CHOICE® ECO-FRIENDLY GAS BURNER

■ Patented design reduces NOx emissions by up to 33% and complies with

less than 40 ng/j requirements for low NOx emissions.

GLASSLINED TANK

■ For long-lasting protection against corrosion.

ANODE ROD

■ Helps protect against corrosion and maximizes tank life.

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

MAXIMUM HYDROSTATIC WORKING PRESSURE 150 PSI

DESIGN-CERTIFIED BY CSA INTERNATIONAL

6-YEAR LIMITED TANK AND 2-YEAR LIMITED PARTS WARRANTY

■ For complete information, consult written warranty.

FMV Model Shown

Revised July 2014

Page 1 of 2

AOSRG46701

Residential Gas Water Heaters

DIMENSIONS IN INCHES

DRAFT

HOOD

OUTLET

APPROX.

SHIPPING

WEIGHT

(LBS.)

MODEL

NUMBER

SERIES

FIRST HOUR

RATING

GALLONS

ENERGY FACTOR

GAL. CAP.

BTU INPUT PER

HOUR NATURAL/

PROPANE

RECOVERY

90˚ RISE

GALLONS

PER HOUR

INSULATION

(INCHES)

A B C D E F

STANDARD ATMOSPHERIC VENT MODELS - See Figure 2

FMV-30 302 55 0.61 30 35,500/32,000 36 2˝ 61-1/2 58 18 13 14-1/4 52 3 or 4 129

FMV-40 302 62 0.59 40 35,500/32,000 36 2˝ 61-3/4 58-1/4 20 13 14-1/4 51-3/4 3 or 4 153

DIRECT VENT MODELS - See Figure 1

FMD-30 300 49 0.61 30 30,000/29,000 31 2˝ — 58 18 13 14-1/4 52 3 129

FMD-40 300 61 0.60 40 32,000/29,000 33 2˝ — 58-3/4 20 13 14-1/4 51-3/4 3 153

FMD-50 300 77 0.59 50 40,000/37,000 39 2˝ — 57-1/4 22 13 14-1/4 50-1/4 3 168

All models ship from factory for use with natural gas, a complete LP (propane) burner is supplied for converting to propane gas.

Approved Roof Jack Kits for Direct Vent Models

KIT NUMBER MIN. MAX. SHIP. WEIGHT

Direct Vent Manufacture Housing water heaters must be installed using one of these approve Roof Jack Kits, which must be ordered separately. “Min.” and “Max” dimensions indicate kit adjustability for varying vent distance, as shown in drawing.

9002964005 — 12˝ 10

9002965005 17˝ 32˝ 13

9002966005 32˝ 60˝ 27

9002967005 49˝ 96˝ 22

VENT KIT / 96 IN.

ANODE ROD

T&P VALVE

96˝ MAX. 49˝ MIN.

36˝ MAX. 55˝ MIN.

VENT KIT / 60 IN.

60˝ MAX. 32˝ MIN.

2˝ MIN.

100˝ MAX.

40˝ MIN.

Adj. 0-22.6 MAX. PITCH 5-12

22.6

32˝ MAX. 17˝ MIN.

VENT KIT / 32 IN.

72˝ MAX. 25˝ MIN.

VENT KIT / 12 IN.

12˝ MAX.

52˝ MAX. 18˝ MIN.

HOT WATER OUTLET CONNECTION 3/4˝ NIPPLE SUPPLIED

Direct Vent Models Figure 1

23˝ MAX.

GAS CONNECTOR

1/2˝ FEMALE

COLD WATER INLET FOR CONNECTION, 3/4˝ NIPPLE SUPPLIED

Standard Vent Models

Figure 2

For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

Revised July 2014 Page 2 of 2

www.hotwater.com AOSRG46701