A.O. Smith Effex GAHH-50 user manual

User manual for the device A.O. Smith Effex GAHH-50

Device: A.O. Smith Effex GAHH-50
Category: Water Heater
Manufacturer: A.O. Smith
Size: 4.07 MB
Added : 7/9/2013
Number of pages: 40
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Abstracts of contents
Summary of the content on the page No. 1

Installation Instructions and Use & Care Guide
RESIDENTIAL GAS WATER HEATERS
HIGH EFFICIENCY ATMOSPHERIC VENT
GAS WATER HEATER
(FLAMMABLE VAPOR IGNITION RESISTANT)
FOR SPACE HEATING AND POTABLE WATER HEATING ONLY.
NOT FOR USE IN MOBILE HOMES.
This water heater complies with ANSI Z21.10.1-current
edition regarding the accidental or unintended ignition of
fl ammable vapors, such as those emitted by gasoline.
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
WARNING: If

Summary of the content on the page No. 2

TABLE OF CONTENTS Water Heater Safety ........................................................................................................................................................................... 1-4 Safe Installation, Use and Service ...................................................................................................................................................... 3 Safety Precautions .............................................................................

Summary of the content on the page No. 3

SAFE INSTALLATION, USE AND SERVICE Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your water heater to warn you and others of a potential hazard. Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who install, use or s

Summary of the content on the page No. 4

Fire or Explosion Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Avoid all ignition sources if you smell Natural or LP gas. Do not expose water heater control to excessive gas pressure. Use only gas shown on rating plate. Maintain required clearances to combustibles. Keep ignition sources away from faucets after extended period of non-use. Read instruction manual before installing, using or servicing wat

Summary of the content on the page No. 5

TYPICAL INSTALLATION GET TO KNOW YOUR WATER HEATER - GAS MODELS A Vent Pipe K Outer door U Main Burner B Draft hood L Union V Flue C Anode (Not Shown) M Inlet Water Shut-off Valve W Suitable Metal Drain Pan D Hot Water Outlet N Cold Water Inlet X Control Display E Insulation O Inlet Dip Tube Y Power Supply Transformer (Shown detached from Heater) F Gas Supply Piping P Temperature & Pressure Relief Valve G Manual Gas Shut-off Valve Q Rating Plate YY Pressure Switch

Summary of the content on the page No. 6

INSTALLING YOUR GAS WATER HEATER Unpacking the Water Heater Important Information About This Water Heater This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable WARNING vapor ignition incident. New technology used in meeting these standards makes this product more sensitive to Excessive Weight Hazard installation errors or improper installation environments. Please review the Installation Checkli

Summary of the content on the page No. 7

If flammable liquids or vapors have spilled or leaked in Location Requirements the area of the water heater, leave the area immediately and call the fire department from a neighbor’s home. Do not attempt to clean the spill until all ignition sources have been extinguished. WARNING Carbon Monoxide Poisoning Hazard Do not install in a mobile home. WARNING Doing so can result in carbon monoxide poisoning and death. Fire or Explosion Hazard • Re

Summary of the content on the page No. 8

EXHAUST FAN REVERSE FLOW OF GASES IMPORTANT: The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower FIGURE 2. floors of the structure. Due to the normal corrosive action of water, the tank will eventually leak after an extended period Clearances and Accessibility of time. Also any external plumbing leak, including those from improper installat

Summary of the content on the page No. 9

GAS SUPPLY WARNING Manual Gas Shut-Off Valve Ground Joint Union Install a readily acces- sible manual shut-off Discharge Pipe valve in the gas supply (Do Not plug or cap) line as recommended by the local utility. Explosion Hazard Check with local utility for minimum height. • Use a new CSA approved gas supply line. 3” Minimum • Install a shut-off valve. Drip Leg 6” Max. Air Gap Suitable Drain • Do not connect a natural gas water heater to an L.P. gas FIGURE 3. supply. • Do not connect

Summary of the content on the page No. 10

Gas Pipe Capacity Table WARNING WARNING Explosion Hazard Explosion Hazard • Use a new CSA approved gas supply line. • Gas leaks can not always be detected by smell. • Install a shut-off valve. • Gas suppliers recommend that you use a gas detector approved by UL or CSA. • Do not connect a natural gas water heater to an L.P. gas supply. • For more information, contact your gas suppl

Summary of the content on the page No. 11

COMBUSTION AIR & VENTILATION TABLE 3 Minimum WARNING Square Typical Room BTUH Input Feet with Carbon Monoxide Warning with 8’ Ceiling 8’ Ceiling Water heater must be vented to outdoors. 30,000 188 9 x 21 Vent must be installed by a qualified technician using the installation instructions. 45,000 281 14 x 20 Examples of a qualified technican include: gas 60,000 375 15 x 25 technicians, authorized gas company personel, and 75,000 469 15 x 31 authorized service persons. 90,000 563 20 x 28 Failu

Summary of the content on the page No. 12

Attic or crawl spaces cannot be closed and must be properly ventilated to the outside. 12” Max. Ductwork must be of the same cross-sectional area as the free area of the opening to which they connect. The minimum dimension of rectangular air ducts cannot be less than three inches. Permanent openings to The size of each of the two openings is determined by the Closet the outside or method in which the air is to be provided. Refer to Table or other additional confined 4 to calculate the m

Summary of the content on the page No. 13

Alternative Gable Vent Opening to Outdoors Location Install Above Insulation Confined Space 1 sq. in. per 3000 BTUH Confined Space Outlet Air to the Attic 1 sq. in. per 4000 BTUH Inlet Air from the Crawl Space Alternative Air Inlet All Air From Outdoors - Using A Single Permanent Opening FIGURE 8B. Open 1 sq. in. per Vent Pipe System Foundation 4000 BTUH Vent All Air From Outdoors: Inlet Air From Ventilated This water heater uses a non-dir

Summary of the content on the page No. 14

Align the legs of the draft hood with the slots provided. • The connector must be installed above the extreme Insert the legs and secure the draft hood to the water bottom of the chimney to prevent potentially blocking heater’s top with the four screws provided as shown in the flue gases. Figure 9. Do not alter the draft hood in any way. If you are • The connector must be firmly attached and sealed to replacing an existing water heater, be sure to use the draft prevent it from falling out.

Summary of the content on the page No. 15

2 FT. Minimum Above Any Object Within WATER SYSTEM PIPING 10 FT. Horizontally 3 FT. Piping Installation Minimum Piping, fittings, and valves should be installed according Support Strap to the installation drawing (Figure 13). If the indoor Type B Double Maintain installation area is subject to freezing temperatures, the Wall Vent Pipe Clearance* water piping must be protected by insulation. The water supply pressure should not exceed 80 psi. I

Summary of the content on the page No. 16

In a closed system use a Closed System/Thermal Expansion thermal expansion tank Cold Water Pressure Reducing Inlet Valve Valve with Bypass Hot Water Outlet Cold Water Supply to Fixture Main Water Supply Temperature and Pressure (T&P) Relief Valve (Optional Top T&P Relief Valve Not Shown) Massachusetts: Install a vacuum relief in cold water line per section 19 MGL 142 As water is heated, it expands (thermal expansion). In a closed Discharge line system, the volume of wa

Summary of the content on the page No. 17

For protection against excessive pressures and pipe. Also ensure that the base of insulation is flush with temperatures, a temperature and pressure relief valve must the water heater. Once seated, secure the insulation with be installed in the opening marked “T & P RELIEF VALVE” duct tape, electrical tape, or equivalent. (see Figure 15A). This valve must be design certified by 7. Repeat steps 5 through 6 for the hot water (outlet) pipe. a nationally recognized testing laboratory that maintai

Summary of the content on the page No. 18

A diaphragm-type expansion tank suitable for potable Electrical Connections water will normally eliminate this weeping condition. Please read and follow the manufacturer’s instructions for the installation of such tanks. WARNING Must Be Vertical To Domestic Remove Air Bubbles Expansion Tank Electric Shock Hazard Hot Water Out Vacuum Cold Water Inlet Relief Mixing Disconnect power before Valve Valve Flow Control servicing. Pump Valve H

Summary of the content on the page No. 19

IMPORTANT INFORMATION ABOUT THIS WATER HEATER This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident. The new technology used in meeting these standards makes this product more sensitive to installation errors. Please review the following checklist and make any required installation upgrades or changes. Questions? Contact Residential Technical Assistance by referencing the phone number on the front of the Installat

Summary of the content on the page No. 20

OPERATING YOUR WATER HEATER Operating Instructions Read and understand these directions thoroughly before WARNING attempting to operate the water heater. Make sure the view Explosion Hazard port is not missing or damaged (See Figure 25). Make sure the tank is completely filled with water before Replace view port if glass is missing operating the water heater. The gas control valve/ or damaged. thermostat has a “On/Off Switch” and needs to be turned on before water heater is operational. Che


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