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Lochinvar
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CGR-IS
Specifications
24 pgs340.8 Kb0

Lochinvar CGR-S, CGR-IS Specifications

INSTALLATION & SERVICE MANUAL
CGR-I&S
GAS-FIRED COMMERCIAL WATER HEATER
WARNING
If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
FOR YOUR SAFETY Do not store or use gasoline or other flammable, combustible, or corrosive vapors and liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any telephone in your building.
• Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
For safety, convenience, and best performance, we recommend this water heater be installed and serviced by a plumbing professional.
TABLE OF CONTENTS
GENERAL INFORMATION...............................................................1
INSTALLATION.........................................................................2
GENERAL OPERATION...................................................................8
Wiring Diagrams
Lighting and Shutdown Instructions ....................................10
MAINTENANCE ............................................................................12
OPERATING & TROUBLESHOOTING GUIDE..................................13
TEMPERATURE CONTROL CHECKOUT..........................................16
INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND
SPACE HEATING ..........................................................................17
FAN INDUCED COMBUSTION.......................................................18
The warranty for this water heater is in effect only when the water heater is installed, adjusted, and operated in accordance with these Installation and Operating Instructions. The warranty does not cover damage or injury caused by the use of any energy-saving devices (other than those authorized by the manufacturer) in conjunction with this water heater. The use of unauthorized energy-saving devices may decrease the life of the water heater and endanger life and/or property. The manufacturer will not be liable for any damage, injury, or loss of life resulting from alteration and/or failure to comply with these instructions.
This water heater has been equipped for use with one type of gas only. Compare the information provided on the rating plate, affixed to the front of the water heater, making sure that the gas stated on the rating plate is same as the gas to be used.
CAUTION
Do not attempt to use this water heater with any gas other than the type listed on the rating plate. Do not attempt to convert this water heater for use with a gas other than the type for which it is equipped. Failure to use the proper gas can create an unsafe condition resulting in property damage, bodily injury, or death. Consult your local gas supplier or Gas Company if there are any questions.
This water heater must be installed in accordance with local codes. In the absence of local codes. It must be installed in compliance with the National Fuel Gas Code (ANSI Z223.1 and Lastest Edition), or in Canada CAN/CGA B149.1 Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition).
For installations in high altitude regions, this water heater must be ordered from the supplier to the manufacturer’s specifications for that particular altitude. Contact the company listed on the rating plate when ordering high altitude constructed water heaters.
This water heater has been designed and certified for the purpose of heating potable water. This installation and use of this water heater for any purpose other than the heating of potable water may cause damage to the water heater, create a hazardous condition, and nullify the warranty.
CAUTION
Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty.
DANGER
Do not store or use gasoline or other flammable, combustible, or corrosive vapors and liquids in the vicinity of this or any other appliance.
GENERAL INFORMATION
This gas-fired water heater is design certified by the American Gas Association Laboratories under the applicable American National Standard, Z21.10.1 or Z21.10.3 (as indicated on the rating plate), available from the American Gas Association, 1515 Wilson Blvd., Arlington, VA 22209.
IMPORTANT
Before proceeding, please inspect the water heater and components for possible damage. DO NOT install any damaged components. If damage is evident then please contact the supplier where the water heater was purchased or the manufacturer listed on the rating plate for replacement parts .
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INSTALLATION
Locating The Water Heater
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there shall be no materials stored against the water heater or vent-air intake system and proper care shall be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake components. UNDER NO
CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER OR VENT-AIR INTAKE SYSTEM.
This water heater must NOT be installed in any location where gasoline or flammable vapors are likely to be present, unless the installation is such to eliminate the probable ignition of gasoline or flammable vapors.
The location of this water heater is of the utmost importance. Before installing this water heater, you should read the Installation section of these instructions. After reading these Installation and Operating Instructions, select a location for the water heater where the floor is level and is easily accessible to water lines, gas supply (type identified on the rating plate), an adequate open drain, and a chimney or exhaust gas vent. DO NOT locate the water heater where water lines could be subjected to freezing temperatures. Make sure the cold water pipes are not located directly above the gas control box or any other electrical control so that condensate during humid weather does not drip on the controls.
Adequate clearances shall be provided for easy access to controls by service personnel to enable proper cleaning, servicing, and operation of the water heater. Under no circumstances is the front of the water heater to be placed in a position where the burner tray assembly can not slide out for removal when servicing.
Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors. Examples of some typical compounds that are potentially corrosive are: spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes and process chemicals. These materials are corrosive at very low concentration levels with little or no odor to reveal their presence. NOTE: DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE HAS OR WILL OCCUR. DO NOT STORE ANY POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any telephone in your building.
• Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!
WARNING
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE FOLLOWING:
• Liquefied petroleum gases/propane gas and natural gas have an odorant added by the gas supplier that aids in detection of the gas.
• Most people recognize this odor as a “sulfur” or “rotten egg” smell.
• Other conditions, such as “odorant fade” can cause the odorant to diminish in intensity, or “fade”, and not be as readily detectable.
• If you have a diminished sense of smell, or are in any way unsure of the presence of gas, immediately contact your gas supplier from a neighbor’s telephone.
• Gas detectors are available. Contact your gas supplier or plumbing professional for more information.
Proper venting practices must be considered when selecting a location for this water heater. For exact venting specifications, please consult the Venting section, located on page 5 of these Installation and Operating Instructions.
This water heater must be located in an area where leakage of the tank, water line connections, or the combination temperature and pressure relief valve will not result in damage to the area adjacent to the water heater or to lower floors of the structure. When such locations cannot be avoided, a suitable drain pan must be installed under the water heater. The drain pan must be no greater than 1 ½ inches (3.8 cm) deep and have a minimum length and width of at least four (4) inches (10.2 cm) measured from the jacket of the water heater. The drain pan, as described above, can be purchased from your plumbing professional. The drain pan must be piped to an adequate drain. The piping must be at least ¾ inch (1.9 cm) in diameter and pitched for proper drainage.
It is recommended that a minimum clearance of four (4) inches (10.2 cm) be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve.
MINIMUM CLEARANCES
WARNING
Failure to adhere to these installation and operating instructions may create a hazard to life and property and will nullify the warranty.
Liquefied petroleum gases/propane gas are heavier than air and will remain at floor
WARNING
level if there is a leak. Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation of leaking gas. Before lighting, smell all around the appliance area for gas. Be sure to smell next to the floor.
This installation shall allow access to the front of the water heater and adequate clearance shall be provided for servicing and operating this water heater. The water heater may be installed on either a combustible or non-combustible floor. If the water heater is to be installed directly on carpeting, it shall be installed on top of a metal or wood panel (or equivalent) extending beyond the full width and depth of the appliance by at least there (3) inches (7.6 cm) in any direction or, if the appliance is to be installed in alcove or closet, the entire floor shall be covered by the panel. The minimum clearances to combustibles for this water heater are given in the tables on pages 3 through 4. A minimum of 24 inches front clearance shall be provided for inspection and servicing.
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The National Fuel Gas Code (ANSI Z233.1- or latest edition) and CAN/CGA (B149.1- or latest edition), expressly prohibits the following:
a) Installation of a water heater in a bathroom, bedroom, or any occupied room normally kept closed. b) Installation of a water heater in a garage, unless the unit is installed so that the burner and ignition devices are at least eighteen (18) inches (45.8 cm) above floor level and protected to avoid damage by a moving vehicle.
CAUTION
Figure 2Figure 1
Flue Damper Models (Figure 1)
Model Description Clearances * Capacity Input (BTU/hr) A B C D E F Sides and Flue or Ceiling (GAL) (in) (in) (in) (in) (in) (in) Rear (in) Vent (in) (in)
Nat. L P
100 199,999 199,999 74.88 65.19 56.38 4.56 23 6 2 6 20 80 399,999 375,000 71.06 60.03 51.56 10.19 N/A 8 6 6 20 80 505,000 475,000 69.03 60.03 51.56 10.19 N/A 10 6 6 20
Model Description Clearances * Capacity Input (kW/hr) A B C D E F Sides and Flue or Ceiling
(LITERS) (cm) (cm) (cm) (cm) (cm) (cm) Rear (cm) Vent (cm) (cm)
Nat. L P
378.5 58.7 58.7 1.90 1.66 1.43 11.6 58.4 15.2 5.1 15.3 50.8
302.8 117.3 109.9 1.81 1.53 1.31 25.9 N/A 10.2 15.3 15.3 50.8
302.8 148.0 139.3 1.75 1.53 1.31 25.9 N/A 25.4 15.3 15.3 50.8
Flue Damper Models (Figure 2)
Model Description Clearances * Capacity Input A B C D Sides and Flue or Ceiling (GAL) (BTU/hr) (in) (in) (in) (in) Rear (in) Vent (in) (in)
65 370,000 71.38 64.38 54.13 8 6 6 20 75 300,000 72.00 64.38 54.13 7 6 7 20
Model Description Clearances * Capacity Input (kW/hr) A B C D Sides and Flue or Ceiling (Liters) (cm) (cm) (cm) (cm) Rear (cm) Vent (cm) (cm)
246.1 108.5 1.82 1.64 1.38 20.4 15.3 15.3 50.8
283.9 88.0 1.83 1.64 1.38 17.8 15.3 17.8 50.8
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Installation (Minimum Clearances) continued-
Figure 3
Figure 4
Flue Damper Models (Figure 3)
Model Description Clearances * Capacity Input A B C D E Sides and Flue or Ceiling (GAL) (BTU/hr) (in) (in) (in) (in) (in) Rear (in) Vent (in) (in) 38 155,000 51.00 43.00 34.75 33.75 6 2 6 20
Model Description Clearances * Capacity Input A B C D E Sides and Flue or Ceiling (Liters) (kW/hr) (cm) (cm) (cm) (cm) (cm) Rear (cm) Vent (cm) (cm)
143.9 45.5 1.30 1.10 0.88 0.88 15.3 5.1 15.3 50.8
Flue Damper Models (Figure 4)
Model Description Clearances *
Capacity Input A B C D E Sides and Flue or Ceiling (GAL) (BTU/hr) (in) (in) (in) (in) (in) Rear (in) Vent (in) (in) 80 180,000 71.88 64.38 64.38 56.00 55.13 2 6 20 80 199,999 71.88 64.38 64.38 56.00 55.13 2 6 20 98 199,999 82.88 75.38 75.38 67.00 66.13 2 6 20 98 250,000 82.88 75.38 75.38 67.00 66.13 2 6 20 (235,000 LP) 100 199,999 75.50 69.88 61.88 60.38 56.88 2 6 20
Model Description Clearances * Capacity Input A B C D E Sides and Flue or Ceiling (Liters) (kW/hr) (m) (m) (m) (m) (m) Rear (cm) Vent (cm) (cm)
302.8 52.8 1.83 1.69 1.64 1.43 1.40 5.1 15.3 50.8
302.8 58.7 1.83 1.69 1.64 1.43 1.40 5.1 15.3 50.8
371.0 52.8 2.11 1.97 1.92 1.71 1.68 5.1 15.3 50.8
371.0 73.3 2.11 1.97 1.92 1.71 1.68 5.1 15.3 50.8 (68.9 LP)
378.5 52.8 1.92 1.78 1.58 1.54 1.45 5.1 15.3 5 0.8
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The following notes apply the tables accompanying Figures 1-4.
1. All models with flue dampers and/or above 400,000 Btu/hr input employ a “spark” (IID) ignition system and requires 120 volt AC electric supply.
2. * -Denotes minimum clearances to combustible material. Some models may have different clearances. Check the label on the front of the water heater to verify proper installation clearances.
CGR-I&S
CAUTION
Modification to the flue damper or the draft diverter may result in personal injury, property damage or death. The flue damper and draft diverter are to be placed in position and operate exactly as stated in these instructions
without modification.
Figure 5
VENTING
WARNING
The vent system must be installed properly. Failure to properly install the vent system could result in property damage, personal injury, or death.
This water heater must be connected to a masonry chimney or venting system approved by local codes or ordinances. This vent connector used to attach the draft diverter outlet to the chimney or approved vent must be of the same diameter as the draft diverter outlet or larger. For proper venting in certain installations, a large vent connector may be needed. Consult venting tables in ANSI standard (Z223.1-latest edition), National Fuel Gas Code and CAN/CGA (B149.1 or B149.2 – latest editions), or local code officials for proper application for your area.
Flue Damper
Refer to Figure 5 and follow these instructions:
CAUTION
Do not turn on electrical power to water heater until flue damper is installed and water heater is filled with water.
1. Remove the damper from the accompanying box shipped within the crate.
2. Locate the collector outlet on top of the water heater. Place the damper over the collector outlet and rotate as necessary to a position in which the damper wiring plug can be fully engaged with the connector on the side of the water heater.
3. If applicable, remove clip which holds damper vane closed. This type of vent damper will then open by itself.
4. Secure the flue damper to the jacket top with sheet metal screws. Note: Some dampers require an additional bracket to assure level installation.
5. Connect the damper wiring plug to the connector on the side of the water heater. Note: The plug and connector can only be engaged one way (polarized).
6. The Lighting and Operating instructions are outlined beginning on page 9. The damper must be in the open position when the water heater main burner is operating (the arrow on the damper plate is in the “up” position when open. Be certain the arrow is in a visible position when installed).
Draft Diverter
This water heater has been shipped with a draft diverter for which it was designed. Remove the bag containing the legs and instructions from the draft diverter. Attach the legs to the draft diverter and attach the draft diverter to the water heater per the instructions in the bag.
DRAFT DIVERTER
DAMPER COVER
CONNECTOR PLUG
WIRE HARNESS
DAMPER VANE
COLLECTOR OUTLET
JACKET TOP
COMBUSTION AIR SUPPL Y
WARNING
Liquefied petroleum gases/propane gas are heavier than air and will remain at floor level if there is a leak. Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation of leaking gas. Before lighting, smell all around the appliance area for gas. Be sure to smell next to the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any telephone in your building.
• Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!
IMPORTANT
The flow of combustion and ventilating air must not be obstructed.
Provide adequate air for combustion and ventilation. An insufficient supply of air will cause recirculation of combustion products resulting in air contamination that may be hazardous to life. Such a condition often will result in a yellow, luminous burner flames, causing carboning or sooting of the burners and flue tubes with possible damage to the heater.
Confined Spaces
If the water hater is installed in a confined space (volume is less that 50 ft 3/ 1000 Btu (15 m 3/0.29kW) per hour of the total input rating of all gas appliances in that space), air must be supplied through two permanent openings. One opening shall be within 12 inches (30.5 cm) from the top of the enclosure and one within 12 inches (30.5 cm) of the bottom. The openings must be protected by metal louvers or ¼” (6.4 mm) min. mesh meal screen. The size of the openings are as follows.
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1. If the openings communicate directly with an additional room(s) of sufficient volume, each opening shall have a minimum free area opening of 1 in 2/ 1000 Btu (2.54 cm 2/0.29kW) per hour of the total input rating of all gas appliances in the confirmed space, but not less that 100 in 2(254 cm 2).
2. If the openings communicate with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 in 2/2000 Btu (2.54 cm 2/0.59kW) per hour of the total rating of all gas appliances in the enclosure.
3. If the openings communicate directly with the outdoors or through vertical ducts with outdoors, each opening shall have a minimum free area of 1 in
2
/4000 Btu (2.54 cm 2/1.18kW) per hour of the total rating of all gas
appliances in the enclosure.
CAUTION
The draft diverter relief opening of the water heater and combustion air inlet must be in the same atmospheric pressure zone. Large exhaust fans in kitchens and other locations can lower the air pressure inside an enclosure and interfere with the proper operation and venting of the water heater. In these cases, the water heater should be installed in a separate room with the combustion and ventilation air supplied directly from outdoors as previously described.
All Air From Inside the Building: The confined space shall be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 in 2/1000 Btu (2.54 cm 2/
0.29kW) per hour of the total input rating of all gas utilization equipment in the
confined space, but not less that 100 square inches (254 cm2) . One opening shall be within 12 inches (30.5 cm) of the top and one within 12 inches (30.5 cm) of the bottom of the enclosure.
Unconfined Spaces
In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.), additional air may need to be provided using the methods described above under CONFINED SPEACES: All Air From Outdoors or SPECIALLY ENGINEEERED INSTALLATIONS.
Specially Engineered Installations
The requirements noted under CONFINED SPACES above shall not necessarily govern when special engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and dilution of flue gases.
close the faucet. The COLD water inlet and HOT water outlet are identified on the top and front of the water heater. Make sure the dip tube is in place before making the cold water connection. Make the proper plumbing connections between the water heater and the plumbing system to the house. Install a shut-off valve in the cold water supply line.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples on top of the water heater. Sweat the tubing to the adapter before fitting the adapter to the water connections. It is imperative that heat is not applied to the nipples containing a plastic liner.
WARNING
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED ¾” X ¾” TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM EXCESSIVE TEMPERATURE AND PRESSURES.
If this water heater is installed in a closed water supply system, such as the one having a back-flow preventer in the cold water supply, provisions shall be made to control thermal expansion. DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion. Warranties do not cover damages from thermal expansions such as pressure bulges and/or deformities. Your water supplier or local plumbing inspector should be contacted on how to control this situation.
After installation of the water lines, open the main water supply valve and fill the water heater. While the water heater is filling, open several hot water faucets to allow air to escape from the water system. When a steady stream of water flows through the faucets, close them and check all water connections for possible leaks. NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER.
CAUTION
Keep clear of combination temperature and pressure relief valve discharge line outlet. The discharge may be hot enough to cause scald injury. The water is under pressure and may splash.
This water heater can deliver scalding temperature water at any faucet in the system. Be careful whenever using hot water to avoid scalding injury. Certain appliances such as dishwashers and automatic clothes washer may require increased temperature water. By setting the thermostat on this water heater to obtain the increased temperature water required by theses appliances, you may create the potential for scald injury. To protect against injury, you should install an anti-scaled tempering valve in the water system. This valve will reduce point of discharge temperature by mixing cold and hot water in branch supply lines. Such valves are available from the local plumbing supplier. Please consult with a plumbing professional. For information regarding space heating water connections and plumbing arrangements, refer to page 16.
WATER CONNECTIONS
Note:
BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE.
After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater. After the pressure has been relieved,
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WARNING
For protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Automatic
Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22 or the Standard CAN1-4.4. Temperature and Pressure and the Standard CAN1-4.4, Temperature, Pressure, Temperature and Pressure Relief Valves and Vacuum Relief Valves. The combination temperature and pressure
relief valve shall be marked with a maximum set pressure not to exceed the maximum working pressure of the water heater. The combination temperature and pressure relief valve shall also have an hourly rated temperature steam BTU discharge capacity not less than the hourly rating of the water heater.
Install the combination temperature and pressure relief valve into the opening provided and marked for this purpose on the water heater.
CGR-I&S
NOTE: Some models may already be equipped or supplied with a combination temperature and pressure relief valve. Verify that the combination temperature and pressure relief valve complies with local codes. If the combination temperature and pressure relief valve does not comply with local codes, replace it with one that does. Follow the installation instructions above on this page.
Install a discharge line so that water discharged from the combination temperature and pressure relief valve will exit within six (6) inches (15.2 cm) above, or any distance below the structural floor and cannot contact any live electrical part. The discharge line is to be installed to allow for complete drainage of both the combination temperature and pressure relief valve and the discharge line. The discharge opening must not be subjected to blockage or freezing. DO NOT thread, plug or cap the discharge line. It is recommended that a minimum clearance of four (4) inches (10.2 cm) be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve.
Do not place a valve between the combination temperature and pressure relief valve and the tank.
WARNING
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink before you use any electrical appliance which is connected to the hot water system. If hydrogen is present, there will be an unsual sound such as air escaping through the pipes as hot water begins to flow. Do not
smoke or have open flame near the faucet at the time it is open.
GAS CONNECTIONS
The gas supply lines must meet all requirements of the National Fuel Gas Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CCGS B149.1 Natural Gas Installation Code (Latest Edition), or CAN/CGA B149.2 propane installation code (Lastest edition).
The minimum permissible gas supply pressure for the purpose of input adjustment is one (1.0) inch (0.25kPa) water column above the operating manifold pressure. See the rating plate and gas valve for the manifold pressure and gas type. The maximum permissible gas supply pressure is fourteen (14.0) inches (3.5kPa) water column for natural gas and liquefied petroleum gases/propane gas.
1. Connect this water heater only to the type of gas (Natural or Propane gas) as shown on the rating plate. Use clean black iron pipe or equivalent material approved by local codes and ordinances. (Dirt and scale from the pipe can enter the gas valve and cause it to malfunction). The inlet gas line must have a minimum length of three (3) inches (7.6 cm) drip leg (sediment trap) installed as close to the water heater’s gas valve as possible. A ground joint union must be installed in the gas supply line, as close to the water heater as possible, feeding the water heater to permit servicing of the water heater. Compounds used on the threaded joints of the gas piping must be resistant to the action of liquefied petroleum gasses/propane gas. DO NOT apply pipe dope to the gas valve inlet and make certain that no pipe dope has become lodged in the inlet screen of the gas valve. Extreme care shall be taken to ensure no pipe dope enters the gas valve and to avoid excessive torque when tightening the gas supply line to the gas valve. Excessive torque may result in cracking of the gas valve housing. The suggested maximum torque is 31.5 ft. lbs. (4.4 kg-m). The manufacturer of this water heater will not be liable for any damage or injury caused as a result of a cracked gas inlet as a result of excessive torque.
2. This water heater and its gas connection must be leak tested before placing the water heater in operation. Check for gas leaks with a soap and water solution and a brush or a commercial leak detector fluid. NEVER USE A MATCH OR OPEN FLAME FOR TESTING!
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CAUTION
The water heater and individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures in excess of ½ psi (3.5 kPa). The water heater must be isolated from the gas supply piping system by closing its manual shutoff valve during any pressure testing of the gas supply system at test pressures equal to or less than ½ psi (3.5 kPa). The supply line must be capped when not connected to the water heater.
TO FILL THE WATER HEATER
1. Close the water heater drain valve by turning the knob clockwise. If alternative water connections are provided but not used, make certain they are plugged (i.e. rear connections).
2. Open the cold water supply shutoff valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater is filled. Close the faucets and check for water leaks at the water heater drain valve, combination temperature and pressure relief valve and the hot and cold water connections.
GENERAL OPERATION
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there shall be no materials stored against the water heater or vent-air intake system, and proper care shall be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake system. UNDER NO CIRCUMSTANCES SHALL FLAMMABLE
MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS W ATER HEATER, OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE W ATER HEATER.
TO DRAIN THE WATER HEATER
Should it become necessary to completely drain the water heater, make sure you follow the steps below:
1. Rotate the thermostat dial clockwise to the “PILOT LIGHTING” position.
2. Rotate and partially depress gas control knob clockwise to the “OFF” position.
3. Shut off the gas supply to the water heater.
4. Close the cold water supply shutoff valve.
5. Open the drain valve on the water heater by turning the knob counter-clockwise. The drain valve has threads on the end that will allow the connection of a standard hose coupling.
6. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater”.
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