Commercial Gas-Fired Water Heaters Installation Start-Up Maintenance Parts Warranty CG***N73 / CG***N65 Models 65 or 73 Gallon Capacities 125,000 to 300,000 BTU Options This manual must only be used by a qualified installer / service technician. Read all instructions in this manual before installing. Perform steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE 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 phone in your building. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
companies which pertain to this type of water heating equipment. The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important product information. DANGER indicates an imminently hazardous situation which, if not avoided, will result in serious personal injury or death. WARNING indicates a potentially hazardous situation which, if not avoided, could result in personal injury or death.
Table of Contents Part 1 - General Safety Information A. Improper Combustion B. Gas C. When Servicing the Water Heating System D. Heater Water E. Freeze Protection F. Water Temperature Adjustment G. Water Chemistry Requirements H. What’s in the Box I. Optional Equipment Part 2 - Installation Instructions A. Locating the Water Heater B. Minimum Clearances C. Combustion and Ventilation Air Supply 4 5 5 5 5 5 5 5 6 6 6 6 7 8 1. Requirements for Unconfined Spaces 2.
A. Improper Combustion Approximate Time / Temperature Relationships in Scalds Do not obstruct the flow of combustion and ventilating air. Adequate air is necessary for safe operation. Obstructing the flow of combustion or ventilating air could result in property damage, serious personal injury, or death. B. Gas Should overheating or gas supply fail to shut off, turn off the manual gas control valve to the water heater. C.
alkaline. A neutral pH (around 7) is desirable for most potable water applications. Corrosion damage and tank failures resulting from water pH levels of lower than 6 or higher than 8 ARE NOT covered by warranty. The ideal pH range for water used in a water heater is 7.2 to 7.8. Total Dissolved Solids Total Dissolved Solids (TDS) is a measurement of all minerals and solids dissolved in a water sample. The concentration of TDS is usually expressed in parts per million (ppm).
Figure 2 - Water Heater Dimensions - NOTE: All Dimensions Are Approximate Input (BTU) Recovery 90oF / 50oC Gallons (Liters) Per Hour 72 (272) 125,000 135 (511) 70 (265) 150,000 162 (613) 199,900 215 (814) 60 (227) 250,000 269 (1018) 55 (208) 300,000 323 (1223) Model Storage Capacity Gallons (Liters) CG125N73 CG150N73 CG199N73(X) 68 (257) CG250N65 CG300N65 Fuel Type NG Shipping Weight Lbs. (Est.
the outdoors or spaces (crawl or attic) that freely communicate with the outdoors. In order for the water heater to operate properly, it must be supplied 1) When communicating directly with the outdoors, each opening with an uninterrupted flow of clean combustion and ventilation air. shall have a minimum free area of one (1) square inch per 4,000 The area around the water heater must always be kept clear so that the BTU/H (5.
3) When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of one (1) square inch per 2,000 BTU/H (11 cm2/kW) of the total input rating of all gas appliances in the enclosure. See Figure 6. Figure 8 - Confined Space - All Air from Outdoors through Duct 3.
DO NOT modify the flue damper / drafthood assembly in any way. DO NOT turn on the electrical power to the water heater until the flue damper / drafthood assembly is installed. Failure to follow these instructions can result in property damage, personal injury, or death. When installing the water heater, make sure the location allows clear viewing of the flue damper. When the damper is in the open position, the paddle is perpendicular to the water heater.
Figure 11 - Side Wall Power Vent Installation Detail US Installations1 Canadian Installations2 12” 30 cm B) Clearance to window or door that may be opened 3’ 1.
Power Venter (Part #) Vent Termination (Part #) Kit #1 6060-200 6060-202 Kit #2 6060-201 6060-203 Table 5 - Power Venter and Vent Termination Part Numbers Water Heater Model Kit # Draft Hood Outlet Vent Size Vent Adapter Vent Reducer Location CG125N73 1 5” 4” 5”-4” 1 CG150N73 2 CG199N73(X) 2 Not Req.
3. RE-INSPECTION OF T&P RELIEF VALVES: T&P valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if necessary, by a licensed plumbing contractor or qualified service technician to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occuring conditions may corrode the valve and its components over time, rendering the valve inoperative.
The water heater and its gas connection must be leak tested before placing the appliance into operation. To leak test the system: 1. Turn on the manual gas shut-off valve near the water heater. 2. Use a soapy water solution to test all connections and fittings for leaks. Bubbles indicate a gas leak. 3. Correct all leaks. Make sure that the inlet pressure to the water heater does not exceed 14 inches of water column (3.5 kPa) for natural gases. Pressures in excess of ½ pound per square inch (3.
Settings on the Power Venter Voltage: 24 Volts Pre-Purge: 0 sec. Post-Purge: 2 min. If the water heater requires servicing, label all wires prior to disconnecting. Verify all wiring connections before relighting the water heater. Wiring errors can result in property damage, personal injury, or death. Damages to this product due to improper wiring ARE NOT covered under warranty. Figure 15 - Wiring the Power Venter Figure 16 - Wiring Detail LP-436 Rev. 5.2.
Figure 17 - Wiring the Control LP-436 Rev. 5.2.
Location Complete Is the water heater located close to the chimney or the gas vent and the main use of hot water? Is the water heater protected from freezing temperatures? Has a drain pan been installed and piped to a free-flowing drain? Is the main gas valve accessible for servicing? Have clearances from combustible materials been observed? Combustion and Ventilation Air Supply Complete Is the area around the water heater clean and properly ventilated? Is the fresh air supply free of corrosive eleme
B. Drafthood Operation It is important to check that the ventilation system is working properly once the water heater main burner has been lit. Wait 10 minutes after lighting the burner. Then introduce a match or candle around the opening of the drafthood. If the flame is drawn towards the opening, this indicates proper ventilation. If the flame flutters or is blown out, combustion gases are escaping from the drafthood opening.
To Control Sediment Build-Up: 1. Drain a pail of water through the drain valve once a month. 2. Every 3 months, use the following procedure to clean out Hydrogen gas can be produced in a hot water system that has the bottom of the water heater through the cleanout hole not been used for a long period of time (generally 2 weeks or opening: more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. It is highly • Drain out the water. (Refer to Draining the Water Heater).
25 26 28 29 27 24 Figure 19 - Replacement Parts LP-436 Rev. 5.2.
Item Description CG125N73 5” Vent Damper - 125kBTU w/draft hood and motor 8800P-013 6” Vent Damper - 150kBTU w/draft hood and motor 1 CG150N73 CG199N73 CG250N65 8800P-014 6” Vent Damper - 199kBTU w/draft hood and motor 8800P-029 7” Vent Damper - 250kBTU w/draft hood and motor 8800P-015 8” Vent Damper - 300kBTU w/draft hood and motor 8800P-016 2 Vent Damper Motor 8800P-012 3 Aquastat with ECO 8800P-002 4 Fuse - 2 Amps 8800P-005 5 Transformer 8800P-003 6 Pilot Module 8800P-007
Part 5 - Troubleshooting Guide LED Diagnostic System This water heater is equipped with an LED (light emitting diode) diagnostic system, which is located in the black electrical box on the front left hand side of the water heater. The diagnostic system is designed to give the user or qualified service technician a visual indication of the operational status of the different parts of the water heater’s control system.
LP-436 Rev. 5.2.
LP-436 Rev. 5.2.
LP-436 Rev. 5.2.
LP-436 Rev. 5.2.
LP-436 Rev. 5.2.
ADDITIONAL INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS In the Commonwealth of Massachusetts, the installer or service agent shall be a plumber or gas fitter licensed by the Commonwealth. When installed in the Commonwealth of Massachusetts or where applicable state codes may apply; the unit shall be installed with a CO detector per the requirements listed below. 5.08: Modifications to NFPA-54, Chapter 10 (1) Revise NFPA-54 section 10.5.4.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW, KEEP CLEAR OF ALL OBSTRUCTIONS”. 4. INSPECTION.
Limited Warranty Commercial Glass-Lined Direct-Fired Gas Water Heaters The manufacturer warrants each commercial glass-lined direct-fired gas water heater and its parts to be free from defects in materials and workmanship according to the following terms, conditions, and time periods. UNLESS OTHERWISE NOTED THESE WARRANTIES COMMENCE ON THE DATE OF INSTALLATION. This limited warranty is only available to the original owner of this water heater, and is non-transferable.
PROCEDURES FOR WARRANTY SERVICE REQUESTS For HTP Warranty Service: Any claim for warranty assistance must be made immediately upon finding the issue. First, please consult the HTP Warranty Wizard (http://www. htproducts.com/Warranty-Wizard.html) to check warranty eligibility. You may also contact HTP Technical Support at 1-800-323-9651 for questions or assistance.
Customer Installation Record Form The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.
