A.O. Smith FMDV-30, FMDV-40, FMDV-50 User Manual

COMMERCIAL-GRADE

RESIDENTIAL GAS WATER HEATERS

PROLINE® MOBILE HOME DIRECT VENT

COMMERCIAL-GRADE RESIDENTIAL

COMPLIES WITH HUD STANDARDS FOR MANUFACTURED HOUSING INSTALLATION

GAS CONTROL CONVERTIBLE FOR NATURAL AND PROPANE GAS

• For ﬂexibility 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 PACKAGE 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® GAS BURNER

• Patented eco-friendly design reduces NOx emissions by up to 33% and complies with Low- NOx emission requirements of less than 40 ng/J.

COREGARD™ ANODE ROD

• Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.

BLUE DIAMOND® GLASS COATING

• Provides superior corrosion resistance compared to industry standard glass lining.

ENHANCED-FLOW BRASS DRAIN VALVE

• Our residential water heaters have a solid brass, tamper resistant, enhancedﬂow, ball type, drain valve.

• Uses a standard female hose ﬁtting that allows for fast and easy draining during maintenance.

• Designed for easy operation, this valve includes an integral screwdriver slot that features a 1/4 turn (open/close) radius, which not only permits full straightthrough water ﬂow but also a quick and positive shut off.

CODE COMPLIANCE

• Meets UBC, CEC and HUD National Codes.

• Meets the thermal efﬁciency and standby loss requirements of the U.S. Department of Energy and current edition of ASHRAE/IES 90.1

• Complies with the Federal Energy Conservation Standards effective April 16, 2015, in accordance with the Energy Policy and Conservation Act (EPCA), as amended.

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

MAXIMUM HYDROSTATIC WORKING PRESSURE 150 PSI

DESIGN-CERTIFIED BY CSA INTERNATIONAL

• Certiﬁed at 300 psi test pressure and 150 psi working pressure.

• Listed according to ANSI Z21.10.1-CSA

4.1 standards governing storage tanktype gas water heaters.

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

• For complete information, consult written warranty or go to hotwater.com.

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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AOSRG47106

COMMERCIAL-GRADE

RESIDENTIAL GAS WATER HEATERS

Model

Number

FMDV-30 30 29 60 0.61 30,000 29,000 31 61 58 18 13 14-1/4 52-1/2 3 129

FMDV-40 40 38 57 0.59 32,000 29,000 33 61-3/4 58-3/4 20 13 14-1/4 52-1/4 3 153

FMDV-50 50 47 67 0.56 40,000 37,000 39 60 57 22 13 14-1/4 50 3 168

All models ship from the factory for use with natural gas, a complete propane burner is supplied for converting to propane gas. No option available for top T&P. Water connections-3/4” on all models. All models approved fro installation from sea level to 5,400 ft. elevation. Dimensions and speciﬁcations subject to change without notice, in accordance with our policy of continuous product improvement.

Kit Number MIN. MAX.

100285331 - 12” 10

100285333 18” 32” 13

100285412 32” 60” 22

100285414 36” 95” 27

Nominal Capacity

Rated

Storage

Volume

First Hour

Rating Gallon

Btu Input

Per Hour

UEF

Natural

Gas

Approx. Shipping

Weight (lbs)

Btu Input

Per Hour Propane

Recovery

@ 90°F

Rise

Gallon

Per Hour

A B C D E F

HOT WATER OUTLET CONNECTION 3/4˝ NIPPLE SUPPLIED

Dimensions in Inches

ANODE ROD

Outlet

T&P VALVE

Vent

Approx.

Shipping

Weight

(lbs)

APPROVED ROOF JACK KITS

Direct Vent mobile home water heaters must be installed using one of these approved Roof Jack Kits, which must be ordered separately. “Min.”and“Max.”dimensions indicate kit adjust-ability for varying vent distance, as shown in drawing.

COLD WATER INLET CONNECTION, 3/4˝ NIPPLE SUPPLIED

VENT KIT / 95 IN.

95˝ MAX. 36˝ MIN.

VENT KIT / 60 IN.

60˝ MAX. 32˝ MIN.

136˝ MAX. 55˝ MIN.

*Inlet air pipe included 3”diameter for 30 gallon and 40 gallon. 4” diameter for 50 gallon

2˝ MIN.

100˝ MAX.

40˝ MIN.

Adj. 0-30.26° MAX. PITCH 7-12

30.26°

32˝ MAX. 17˝ MIN.

VENT KIT / 32 IN.

72˝ MAX.

25˝ MIN.

VENT KIT / 12 IN.

12˝ MAX.

GAS CONNECTOR

1/2˝ FEMALE

52˝ MAX.

18˝ MIN.

23˝ MAX.

For technical information call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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AOSRG47106