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INTRODUCTION

LOCATION:

COMBUSTION & VENTILATION AIR
CORROSIVE ATMOSPHERE
PROHIBITED INSTALLATIONS
METHOD OF INSTALLATION

INSTALLATIONS
INSPECT SHIPMENT
WATER SUPPLY CONNECTIONS
RELIEF VALVE
GAS SUPPLY CONNECTION
VENTING

INSTALLATION CHECK LIST

 

INTRODUCTION

The location chosen for the water heater must take into consideration the following:

LOCAL INSTALLATION REGULATIONS:

This water heater must be installed in accordance with these instructions, local codes, utility company requirements, and/or in the absence of local codes, the latest edition of the American National Standard, National Fuel Gas Code. A copy can be purchased from either American Gas Association, 1515 Wilson Blvd., Arlington, VA 22209 as booklet Z223.1 or National Fire Prevention Association, Batterymarch Park, Quincy, MA 02269 as booklet NFPA No. 54.

LOCATION:

1.  A gas fired water heater should not be installed in a space where liquids which give off flammable vapors are to be used or stored. Such liquids include gasoline, L.P. Gas (butane and propane), paint and adhesives and their thinners, solvents or removers. Because of natural air movement in a room or other enclosed space, flammable vapors can be carried some distance from where their liquids are being used or stored. The open flame of the water heater’s pilot light or main burner can ignite these vapors causing an explosion or fire which may result in severe burns or death to those in range, as well as property damage.

For these reasons installation of a gas fired water heater in a garage is not desirable.

If a location in the garage is the only alternative, the gas fired water heater should be installed so that the open flame of the pilot and main burner are no less than 40 inches above the garage floor.

Raising the gas fired water heater will reduce BUT NOT eliminate the possibility of lighting the vapors of any flammable liquids which may be improperly stored or accidentally spilled.

2.  The water heater should be installed as close as practical to the gas vent or chimney. Long hot water lines should be insulated to conserve water and energy.

The water heater and water lines should be protected from freezing temperatures.  DO NOT the water heater in bathrooms, any occupied rooms normally kept closed nor in outdoor unprotected areas.

3.  The water heater must be installed with the minimum clearances to combustible material of 6 inches at the sides, 2 inches at the rear and 16 inches above the top of the draft hood outlet. For alcove installation, the water heater shall be installed above noncombustible flooring.

NOTE: A minimum of 24 inches clearance from front should be available for adequate inspection and servicing.

4.  CAUTION! The water heater should not be located in an area where leakage of the water heater will result in damage to the area adjacent to it or to lower floors of the structure. When such areas cannot be avoided, it is recommended that a suitable catch pan, adequately drained, be installed below the water heater. The pan MUST NOT restrict combustion air flow.

NOTE: Auxiliary catch pan installation MUST conform to local codes.

5. COMBUSTION & VENTILATION AIR:

Proper operation of the water heater requires air for combustion and ventilation. If the water heater is installed in an unconfined space within a building of conventional frame, masonry or metal construction, infiltration air is normally adequate for proper combustion and ventilation. 

The confined space should be provided with 2 permanent openings: one commencing within 12 inches of the top and one commencing within 12 inches of the bottom.  Each opening should have a total free area of not less than that as follows depending upon the type of installation.

(a)  If all air for combustion comes from inside the buildings:  Each opening should have a minimum free area of 1 square inch per 1,000 Btu per hour of the total input rating of all gas utilization equipment in the confined space, but not less than 100 square inches.

(b)  If all air for combustion comes from outdoors:
     I. When directly communicating with the outdoors and communicating with
the outdoors through vertical ducts, each opening should have a minimum free area of 1 square inch per 4,000 Btu per hour of total input rating of all equipment in the enclosure.
    II. When communicating with the outdoors through horizontal ducts, each
opening should have a minimum free area of 1 square inch per 2,000 Btu per hour of total input rating of all equipment in the enclosure.
   III. When ducts are used, they should be of the same cross-sectional area as
the free area of the openings to which they connect. The minimum dimension of rectangular air ducts should not be less than 3 inches.

NOTE:  In calculating free area, consideration should be given to the blocking effect of louvers, grills or screens protecting openings.

Protective screening for the openings MUST NOT be smaller than 1/4 inch mesh to resist clogging by lint or debris.

Provisions for combustion and ventilation air must comply with the referenced codes and standards.

See Regulation Section.

6.  CORROSIVE ATMOSPHERE:

The water heater should not be installed near an air supply containing halogenated hydrocarbons. For example, the air in beauty shops, dry cleaning establishments, photo processing labs, and storage areas for liquid and powdered bleaches or swimpool chemicals often contain such hydrocarbons. The air there may be safe to breathe, but when it passes through a gas flame, corrosive elements are released that will shorten the life of any gas burning appliance. Propellants from common spray cans or gas leaks from refrigeration equipment are highly corrosive after passing through a flame.

7.  PROHIBITED INSTALLATIONS:

WARNING!! DO NOT INSTALL THE WATER HEATER IN THE FOLLOWING LOCATIONS:
a.  In small, poorly ventilated rooms.
b.  In airtight rooms with air-conditioning.
c.  Near vents for heating or cooling.
d.  In places where chemicals are used.
e.  In bathrooms, bedrooms or any occupied rooms normally kept closed.
f.  In a location where a water heater may be exposed to freezing temperatures.
g.  In a location where the water heater is subject to vibration. (such as Carpet Cleaning, etc.)
h.  In Recreational Vehicles, Mobile Homes, Boats and other water crafts.
i.  As a part of any circulating systems (such as Home Heating, Spa or Pool Heating, Re-Circulation to the other tank, etc.)
j.  In corrosive, dusty and greasy environments.


8.  METHOD OF INSTALLATION:

A.  For PH-6 series

The bracket attached on the water heater should be secured on a wooden post or wall by means of a total of 3 wood screws.
DO NOT use nails. 
A top screw should be fixed with a clearance of 1/8 inch between wall and screw
head where the water heater bracket is hung up. Water heater should be secured with two bottom screws.

B.  For PH-12M & 24M series

a.  The bracket may be secured to a wooden post or bar by means of a total of 6 wood screws. DO NOT use nails.
b.  When the bracket is to be mounted on a concrete wall or a rigid wooden
post, it may be attached securely in position by use of a pair of dry pit 3/8 or coach screws (3/8) passed through the upper and the lower oval slot in the bracket.

NOTE:  Any local ordinances and regulations relating to the installation of the water heater should be strictly observed.

NOTE: The water heater which will be used to supply potable water shall not be connected to any heating system or component(s) previously used with a nonpotable water heating appliance.

 

INSTALLATIONS

NOTE: INSTALLATIONS (PLUMBING, ETC.) SHOULD BE DONE BY A CERTIFIED AND/OR LICENSED PLUMBER. ALL MODELS SHALL BE INSTALLED INDOORS AT VERTICAL POSITION ON A WALL.

1. INSPECT SHIPMENT:

Inspect water heater for possible damage. Check the marking of the rating plate of the water heater to be certain the type of gas being furnished corresponds to that for which the water heater is equipped.

2.  WATER SUPPLY CONNECTIONS:

a. The water supply to the water heater should be such as to provide sufficient pressure to properly operate the water actuated control valve.  The minimum working water supply pressure is shown in the table. However, additional supply pressure is required above the minimum pressure to cover any pressure head loss or drop in hot water supply lines. Make sure that the total water pressure at the inlet is sufficient to operate water heater at full capacity.

Models
Minimum water supply pressure
PH-6 series
4.3 P.S.I.
PH-12M series
2.1 P.S.I.
PH-24M series
2.4 P.S.I.

b.  Install a shutoff valve near the water inlet of the water heater for purpose of the servicing and draining.

c.  Connection between the water heater and places where hot water is used should be as short and direct as possible, and a uniform pipe size of sufficient diameter to carry the full capacity of hot water should be used.

d.  Be sure to connect the water inlet and the hot water outlet as shown on the water heater. If reversed, the water heater will not function.

NOTE:  Make sure the water filter is in the water inlet connection.

e. When hot water flows through the supply line there is an invisible heat loss, regardless of type of water heater. Thus, insulation or protection of hot water piping is encouraged.

NOTE:  For PH-6 series, well water systems should be set at a range of 40-60 P.S.I.

NOTE:  Some model may require to remove all restrictions from faucets & shower heads.

3.  RELIEF VALVE:

A new combination pressure and temperature relief valve, complying with the Relief Valve Standard, ANSI Z21.22-1986, must be installed at the hot water outlet connection of the water heater at the time of installation. Local codes should govern the installation of the relief devices.

For safe operation of the water heater, be sure that:

( I ) No valve is placed between the relief valve and the water heater.
( II ) Discharge from the relief device is conducted to a suitable place for disposal when relief occurs.
( III ) No reducing coupling or other restrictions are installed in discharge line, and
( IV ) Discharge line is installed to allow complete drainage of the device and line.
( V ) The pressure rating of the relief valve must not exceed 150 P.S.I., the maximum working pressure of the water heater as marked on the rating plate.
( VI ) The BTUH rating of the relief valve must equal or exceed the BTUH input of the water heater as marked on its rating plate.
( VII ) The end of the discharge line should not be threaded or concealed and should be protected from freezing.

NOTE: Manual operation of the pressure-temperature relief valves should be done at least once a year. Turn off the gas intake valve, open the hot water tap and then check the operation of safety relief valve. You should take precautions to avoid contact with hot water coming out of relief valve and to prevent water damage.

NOTE:  If the temperature and pressure relief valve on the system discharges periodically, a problem exists and service to the water system is required.

CAUTIONS!!  This water heater must only be used with the following water supply system conditions:
a.  With clean, potable water (drinkable and harmless to mankind) free of corrosive chemicals, sand, dirt, hair or other contaminants.
b. With inlet water temperatures above 32 degrees F, but not exceeding 90 degrees F.
c.  In non-circulating systems.
d. With the heat exchanger free of lime and scale deposits.

4.  GAS SUPPLY CONNECTION:

a. The gas supply lines should be gas-tight and of such size, and so installed, as to provide a supply of gas sufficient to meet the maximum demand of the water heater without undue loss of pressure.
b. ANSI approved steel or wrought-iron pipe should be used for gas piping.
c. A metal-to-metal type union and shutoff valve should be installed between the water heater and the gas supply pipe. A pipe joint compound resistant to the action of liquefied petroleum gas on the threaded joints must be used.
d. The gas supply piping must include a drip leg in close proximity to the water heater.

 

Type of Gas
Maximum supply pressure
L.P. Gas
13" W.C.
Natural Gas
10.5" W.C.

 

Models
Minimum supply pressure
L.P. Gas
Minimum supply pressure
Natural Gas
PH-6 series
10
3.9
PH-12M series
11.1
4.7
PH-24M series
11
4.7

 

f.  After the water heater is connected to the gas supply, all connections including water heater must be checked for leakage with soapy water, bubble solution or other acceptable means before placing the water heater in operation. DO NOT use Matches, Candles or other sources of ignition for the purpose of leakage test.

g.  The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during and pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

WARNING:  Install the gas pressure regulators, in the gas supply line, which do not exceed the maximum supply pressure mentioned above. DO NOT use the gas pressure regulators, such as the industrial gas pressure regulators, as they are intended for use with medium and high pressure gas. If the gas supply pressure exceeds the maximum mentioned above, imperfect combustion may result and the life of the water heater may be shortened.

MOREOVER, EXCEEDING INDICATED MAXIMUM GAS PRESSURE MAY CAUSE SERIOUS DAMAGE TO THE WATER HEATER AS WELL AS PERSONAL INJURY. MAKE SURE TO INSTALL A PROPER GAS PRESSURE REGULATOR UNDER THE MAXIMUM SUPPLY PRESSURE MENTIONED ABOVE. IF PRESSURE IS LOW, GAS MAY BE INSUFFICIENT TO HEAT WATER.

5.  VENTING:

The water heater should be connected to a gas venting system constructed so as to adequately remove flue gases to the outside atmosphere.

a.  The vent connectors must be attached to the draft hood outlet to connect the water heater to the gas vent or chimney. The vent connectors must be the same size (diameter) as the draft hood outlet or larger, never smaller.  For proper venting in certain installations a larger vent connector size may be needed. Consult Vent Tables in Appendix "G" of the National Fuel Gas Code (ANSI Z223.1 of NFPA booklet 54).

Models
Flue size (D)
PH-6 series
4" diameter
PH-12M series
5" diameter
PH-24M series
7" diameter

 

b.  The terminal of the flue pipe should be extended at least 2 feet above the highest point where it passes through a roof of a building and at least 2 feet higher than any portion of a building within a horizontal distance of 10 feet.

c.  Horizontal vent connectors must be pitched upward to the chimney at least 1/4" per foot of length.

d.  Single wall vent connectors must be at least 6" from adjacent unprotected combustible surfaces. Joint of vent connectors should be securely fastened by sheet metal screws or other approved method.

e.  The location of the pipe passing through a wall should be protected by noncombustible material to provide sufficient clearance from the pipe.

f.  All portions of the pipe should be adequately supported for the design and weight of the material employed.

g.  A cap or a roof assembly should have a venting not less than that of the pipe to which it is attached.

h.  DO NOT install the flue outlet in a wind pressure drift area as shown below. 

A venting system should be designed and constructed so as to develop a positive flow adequate to remove flue gases to the outside atmosphere.

WARNING:  The manufacturer’s warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices into, onto or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property. The manufacturer disclaims any responsibility for such loss injury resulting from the use of such unauthorized devices.

 

INSTALLATION CHECK LIST

A.  Water Heater Location

Close to area of vent.  
Indoors and protected from freezing temperatures.  
Proper clearance from combustible surfaces observed.  
Sufficient fresh air supply for proper operation of water heater.  
Air supply free of corrosive elements and flammable vapors.  
Provisions made to protect area from water damage.  
Sufficient room to service heater.  

B.  Water Supply

Water filter is located in original position.
Water passes through the water heater.
Water heater and piping air vented.
Water connections tight and free of leaks.

C.  Relief Valve

Temperature and Pressure Relief Valve properly installed and discharge line run to open drain.
Discharge line protected from freezing.

D.  Gas Supply

Gas line equipped with shut-off valve. Union and sediment trap/drip leg.
Approved pipe joint compound used.
Soap and water solution used to check all connections and fittings for possible gas leak.
Gas company inspected installation (if required).

E.  Venting

Vent connector(s) pitched upward to chimney (1/4" per foot of length minimum).
Vent connector(s) securely fastened together with screws.
Single wall vent connector(s) at least 6" from combustible material.

 

 

Electric Water Heaters, Tankless Electric Water Heaters

Electric Water Heaters, Tankless Electric Water Heaters

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