Lochinvar Copper-Fin CW 495 Designer'S Manual Download Page 22

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L o c h i n v a r

D E S I G N E R

’

G U I D E

C O P P E R

F I N

W A T E R

H E A T E R

6 1 5 - 8 8 9 - 8 9 0 0

PIPING DIAGRAM

MULTI-STACK FRAME W/ WATER HEATERS AND STORAGE TANK

LIT0396

Heater

Heater Inlet/ Manifold

Model

Outlet Size Pipe Size

CW495-745

2” 3”

CW986-2066

2-1/2”

4”

Summary of Contents for Copper-Fin CW 495

Page 1: ...DESIGNER S GUIDE COPPER FIN WATER HEATER 4 9 5 0 0 0 2 0 6 5 0 0 0 B t u h r...

Page 2: ...d in a succinct easy to use manner so you can use and share information confidently and with minimal effort However it is important to remember that this guide is not intended to replace our installat...

Page 3: ...FIG 2 Water Heater Equipment Control Orientation 4 FIG 3 6 Combustion Ventilation Air 5 6 FIG 7 Barometric Damper Installation 8 FIG 8 Multiple Unit Barometric Damper Installation 9 FIG 9 Outdoor Ven...

Page 4: ...connections should leak water damage will not occur When such locations cannot be avoided it is recommended that a suitable drain pan adequately drained be installed under the unit The pan must not re...

Page 5: ...istribution piping runs through the floor and beneath the appliance Ensure that combustible floor base meets local fire code requirements Outdoor models require the installation of an optional vent ca...

Page 6: ...RMINAL STRIP HOT WATER OUTLET COLD WATER INLET BURNER INSPECTION PORT FRONT GAS CONNECTION HOT WATER OUTLET COLD WATER INLET BURNER INSPECTION PORT FRONT AIR INLET FRESH AIR INLET RIGHT SIDE FLUE PROD...

Page 7: ...re If combustion and ventilation air is taken from the outdoors using a duct to deliver the air to the mechanical room each of the two openings should be sized based on a minimum free area of one squa...

Page 8: ...ry I listed vent pipe Additionally it is recommended that this vent material be double wall construction or insulated in the field A Category I appliance operates with a non positive static vent press...

Page 9: ...The vent terminal should be vertical and exhaust outside the building at least 2 feet 0 6 m above the highest point of the roof when within a 10 foot 3 05 m radius Additionally vertical terminations...

Page 10: ...terial using the FAN category of vent sizing tables in the latest edition of the National Fuel Gas Code FAN applies to fan assisted combustion appliances in Category I Barometric Dampers A barometric...

Page 11: ...a masonry chimney it is prudent to reline the chimney with a properly sized and approved chimney liner system Metallic liner systems Type B doublewall or flexible or rigid metallic liners are recomme...

Page 12: ...onto the water heater Lochinvar must furnish an outdoor vent kit in accordance with CSA international requirements Each kit includes the flue outlet combustion air inlet assembly gasket and pump cove...

Page 13: ...R H E AT E R 6 1 5 8 8 9 8 9 0 0 1 1 4 5 TABLE D GAS SUPPLY PIPE SIZING Length of Pipe In Straight Feet Nominal Iron Pipe Size Inches 10 20 30 40 50 60 70 80 90 100 125 150 175 200 369 256 205 174 155...

Page 14: ...TANT To ensure proper velocity through the heat exchanger it is necessary to regulate the temperature rise across the heat exchanger from inlet to outlet This must be done on initial installation and...

Page 15: ...ory installed as a low water cutoff device on models CW495 thru CW2066 The flow switch is installed in the outlet piping from the water heater and wired in series with the ignition system safety contr...

Page 16: ...nvar NOTE When the unit is installed in Canada it must conform to the CAE C22 1 Canadian Electrical Code Part 1 and or local Electrical Codes NOTE Incorrect piping of the cold water supply to the syst...

Page 17: ...RELIEF VALVE LOCK TEMP STORAGE TANK DRAIN FULL PORT BALL VALVE SYSTEM PUMP SYSTEM RELIEF VALVE TEE ELBOW UNION EXPANSION TANK CHECK VALVE THERMOMETER COLD WATER SUPPLY BUILDING RETURN INLET OUTLET LO...

Page 18: ...OW UNION EXPANSION TANK CHECK VALVE THERMOMETER L E G E N D BUILDING HOT WATER SUPPLY LOCHINVAR WATER HEATER COLD WATER SUPPLY BUILDING RETURN LOCK TEMP STORAGE TANK RELIEF VALVE DRAIN OUTLET INLET LI...

Page 19: ...LET RELIEF VALVE OUTLET COLD WATER SUPPLY 1400 F HOT WATER SUPPLY 1800 F HOT WATER SUPPLY LOCK TEMP STORAGE TANK LOCHINVAR WATER HEATER MIXING VALVE CHECK VALVE LIT0136 This illustration is for concep...

Page 20: ...PPLY BUILDING HOT WATER SUPPLY LIT0138 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 nec...

Page 21: ...SUPPLY LIT0451 THERMOMETER 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 equi...

Page 22: ...S G U I D E C O P P E R F I N W A T E R H E AT E R 6 1 5 8 8 9 8 9 0 0 PIPING DIAGRAM MULTI STACK FRAME W WATER HEATERS AND STORAGE TANK LIT0396 Heater Heater Inlet Manifold Model Outlet Size Pipe Si...

Page 23: ......

Page 24: ...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...

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