DESIGNER’S GUIDE COPPER-FIN® WATER HEATER 495,000 – 2,065,000 Btu/hr
Dear Specifier/Project Manager, At Lochinvar, we have long recognized the importance of innovation to any product or service. Those who enter into business must also accept the challenge of meeting constantly changing needs. The designer’s guide you are now holding has been designed to make it more convenient for you to select the perfect Lochinvar water heater for your projects and provide correct specifications for your teams.
Table of Contents Codes . . . . . . . . . . . . . . . . . . . . . . . . .2 Combustion & Ventilation Air . . . . . . . . .5 Contaminants . . . . . . . . . . . . . . . . . . . .6 Determining Total “Free Area” . . . . . . . .5 Electrical Requirements . . . . . . . . . . . .14 Gas Supply . . . . . . . . . . . . . . . . . . . .10 General Venting . . . . . . . . . . . . . . . . . .6 Location of Unit . . . . . . . . . . . . . . . . . .2 Low Water Temperature Delivery . . . . .12 Outdoor Use . . . . . . . . . . . .
Lochinvar In designing a water heater system, pay special attention to: CODES The equipment shall be installed in accordance with those installation regulations in effect in the local area where the installation is to be made. These shall be carefully followed in all cases. Authorities o Water Velocity (See page 12 for Required Degree having jurisdiction shall be consulted before installations are made. Rise chart.
2. The indoor units must be installed so that • This procedure should also be the ignition system components are followed if electrical conduit or protected from water (dripping, spraying, radiant heat distribution piping rain, etc.) during appliance operation and runs through the floor and service (circulator replacement, control beneath the appliance. replacement, etc.). • Ensure that combustible floor base meets local fire code requirements. 3.
Lochinvar RIGHT SIDE FLUE PRODUCTS VENT INLET GAS CONNECTION OPERATOR ON/OFF SWITCH FRESH AIR INLET TERMINAL STRIP HOT WATER OUTLET 120V ELECTRICAL CONNECTION COLD WATER INLET FRONT RELIEF VALVE TAPPING BACK DRAIN BURNER INSPECTION PORT CW495-745 LEFT SIDE RIGHT SIDE FLUE PRODUCTS VENT OPERATOR GAS CONNECTION ON/OFF SWITCH AIR INLET TERMINAL STRIP HOT WATER OUTLET COLD WATER INLET FRONT BURNER INSPECTION PORT BACK DRAIN LEFT SIDE CW986-2066 (FIG.
COMBUSTION & VENTILATION AIR Provisions for combustion and ventilation air must be in accordance with Section 5.3, Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1; in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and This opening must be located within 12” (30 cm) of the bottom of the enclosure. EXAMPLE OF SIZING FOR COMBUSTION B.
Lochinvar Btu (22 cm2 per kW) of input, but not less than 100 square inches (645 cm2). VENTING General Copper-Fin II Water Heaters are classified as Category I appliances when tested to the latest ANSI Standard. This classification requires all conventionally vented combustion products to be vented using Category I listed vent pipe. (FIG. 6) COMBUSTION AIR FROM OUTSIDE, SINGLE OPENING Additionally, it is recommended that this vent material be double wall construction or 4.
Category I double wall vent (or equivalent) Vent Terminations connectors and sized according to vent The vent terminal should be vertical and sizing tables (FAN column) in the latest exhaust outside the building at least 2 feet edition of the National Fuel Gas Code. (0.6 m) above the highest point of the roof when within a 10 foot (3.05 m) radius. The Category I vent and accessories, such as firestop spacers, thimbles, caps, etc.
Lochinvar NOTE: A vent system should never be sized based only on the vent connection diameter of the appliance. For proper vent design and sizing, please consult the National Fuel Gas Code (ANSI Z223.1). must be consistent with the National Fuel Gas Code Z223.1 or in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment.
condensing of flue products, damage of the masonry flue/tile, insufficient draft and possible spillage of flue products into an occupied living space. NOTE: Common venting systems may be too large when an existing unit is removed. Be (FIG. 8) MULTIPLE UNIT BAROMETRIC DAMPER INSTALLATION For this type of installation, it is best to use a draft control for each water heater located on the riser between the vent outlet and the breeching - Location “A”.
Lochinvar An outdoor unit should not be located so (TABLE C) - OUTDOOR VENT KIT PART NUMBERS that high winds can deflect off of adjacent MODEL NUMBER PART NUMBER CW 495 ODK3023 CW 645 ODK3024 may cause operational problems, bad CW 745 ODK3024 combustion or damage to controls.
4. A manual main gas shutoff valve is provided outside the jacket, upstream of the main gas valve. 5. In Canada, derated10% from 2,000 - of air. Therefore, heat input rate should be EXAMPLE OF reduced in an appliance above 2000 feet. HIGH ALTITUDE Ratings should be reduced at the rate of 4 APPLICATIONS percent for each 1000 feet above sea level. For example, if a unit’s 4,500 ft., over 4,500 ft. derate must be in accordance with local authorities.
Lochinvar LOW WATER TEMPERATURE DELIVERY A number of water heating applications may require delivered water temperature in a system below 140°F. Systems such as nursing homes and hospitals would be examples of this type of system. assured of the proper velocity in the tubes and long life and economical operation from the water heater.
Due to pump capacity the following Standard production Lochinvar water heaters specifications cannot be exceeded are designed to operate free of impurity A larger pump must be when using the standard pump: build-up in the heat exchanger when utilized in situations properly installed and operated under the when the distance specified water quality conditions. between the water • Not more than 45 feet of straight pipe.
Lochinvar Relief Valve NOTE: ELECTRICAL REQUIREMENTS Incorrect piping This water heater is supplied with of the cold water temperature and pressure relief valve(s) supply to the sized in accordance with ASME Boiler and system will result Pressure Vessel Code, Section IV “Heating in condensate formation Boilers.” (North America) The appliance is wired for 120 volts. 1. All wiring between the unit and field installed devices shall be made of type on the heat exchanger and operational problems.
WAT E R H E AT E R P I P I N G D I A G R A M S APPENDIX A PIPING DIAGRAM SINGLE HEATER - SINGLE TANK BUILDING HOT WATER SUPPLY COLD WATER SUPPLY LOCHINVAR WATER HEATER RELIEF VALVE INLET OUTLET LOCK-TEMP STORAGE TANK DRAIN BUILDING RETURN This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer. All necessary equipment may not be illustrated.
PIPING DIAGRAM SINGLE HEATER - TWO TANK BUILDING HOT WATER SUPPLY RELIEF VALVE COLD WATER SUPPLY LOCHINVAR WATER HEATER OUTLET LOCK-TEMP STORAGE TANK INLET DRAIN BUILDING RETURN This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer. All necessary equipment may not be illustrated.
PIPING DIAGRAM TWO TEMPERATURE INSTALLATION - SINGLE HEATER-SINGLE TANK 1800F HOT WATER SUPPLY 1400F HOT WATER SUPPLY LOCK-TEMP STORAGE TANK LOW TEMPERATURE BUILDING RETURN LOCHINVAR WATER HEATER CHECK VALVE RELIEF VALVE MIXING VALVE INLET OUTLET DRAIN HIGH TEMPERATURE BUILDING RETURN COLD WATER SUPPLY This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer.
PIPING DIAGRAM BUILDING HOT WATER SUPPLY TWO HEATERS-SINGLE TANK LOCK-TEMP STORAGE TANK RELIEF VALVE COLD WATER SUPPLY DRAIN OUTLET OUTLET BUILDING RETURN INLET INLET LOCHINVAR WATER HEATERS Gray shaded area represents common manifold piping. COMMON WATER MANIFOLD SIZE FOR MULTIPLE WATER HEATER INSTALLATION Pipe sizing chart provides minimum pipe size for common manifold piping to ensure adequate flow. NUMBER OF UNITS COMMON MANIFOLD SIZE (Min.
PIPING DIAGRAM TWO HEATERS-TWO TANKS COLD WATER SUPPLY LOCHINVAR WATER HEATERS OUTLET RELIEF VALVE BUILDING HOT WATER SUPPLY INLET LOCK-TEMP STORAGE TANKS OUTLET DRAIN BUILDING RETURN Gray shaded area represents common manifold piping. COMMON WATER MANIFOLD SIZE FOR MULTIPLE WATER HEATER INSTALLATION Pipe sizing chart provides minimum pipe size for common manifold piping to ensure adequate flow. NUMBER OF UNITS COMMON MANIFOLD SIZE (Min.) CW 495-745 NUMBER OF UNITS COMMON MANIFOLD SIZE (Min.
PIPING DIAGRAM MULTI-STACK FRAME W/ WATER HEATERS AND STORAGE TANK Heater Model Heater Inlet/ Outlet Size Manifold Pipe Size CW495-745 2” 3” CW986-2066 2-1/2” 4” LIT0396 A6 Lochinvar D E S I G N E R’ S GUIDE COPPER -FIN WAT E R H E AT E R 615-889-8900
Lochinvar Corporation • Lebanon, TN • 615-889-8900 / Fax: 615-547-1000 www.Lochinvar.com CW-DG-05 (Revised CW-DG-05 1/07) 4/09-Printed in U.S.A.
