background image

29

October 2009 | Printed in U.S.A. | © A. 

O. 

Smith 

For 

Technical Information and 

Automated Fax Service, call 800-527-1953 or visi

t www

.hotwater

.com. 

AOSCG61

160 | P

A

GE 1 of 1

 

A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

NOTES:

1. 

Preferred piping diagram.

2. 

The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.

3. 

Service valves are shown for servicing unit. However

, local codes shall govern their usage.

4. 

The 

Tank 

Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).

5. 

The water heater

’s

 operating thermostat should be set 5 degrees F higher than the 

Tank 

Temperature Control.

SINGLE 

FL

UE

 - (1 UNIT) WITH MIXING V

AL

VE 

TWO 

TEMPERA

TURE

LEGEND

TEMPERA

TURE & PRESSURE

RELIEF V

A

LVE

PRESSURE RELIEF V

A

LVE

CIRCULA

TING PUMP

TA

NK TEMPERA

T

URE 

CONTRO

L

DRAIN

FULL

 POR

T

 BALL

 V

A

LVE

TEMPERA

TURE GAGE

W

A

TER FLOW SWITCH

CHECK V

A

LVE

W

ARNING: 

THIS DRA

WING SHOWS SUGGESTED

PIPING CONFIGURA

TION 

AND OTHER DEVICES;

CHECK WITH LOCAL

 CODES 

AND ORDINANCES

FOR ADDITIONAL

 REQUIREMENTS.

HOT WATER

RETURN

MINIMUM

10

´´ to 

12

´´

HOT WATER OUTLET

TEMPERED

WATER

RETURN

TEMPERED

WATER

OUTLET

COLD WATER

SUPPLY

LINE

TEMPERATURE

CONTROL

COLD

HOT

EXPANSION

TANK

PIPE T&P TO

OPEN DRAIN

219332_AOSCG61160.indd   1

12/9/09   11:24:14 AM

Summary of Contents for CLN 075100

Page 1: ...erious injury This manual must remain with the water heater WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal inj...

Page 2: ...Fresh Air Openings for Confined Spaces 13 Outdoor Air Through Two Openings 13 Outdoor Air Through One Opening 13 Outdoor Air Through Two Horizontal Ducts 14 Outdoor Air Through Two Vertical Ducts 14 A...

Page 3: ...ornia to cause cancer birth defects or other reproductive harm and requires businesses to warn of potential exposure to such substances WARNING This product contains a chemical known to the State of C...

Page 4: ...4 GENERAL SAFETY INFORMATION...

Page 5: ...you don t follow the safety rules the water heater will not operate properly It could cause DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE This manual contains instructions for the installation op...

Page 6: ...2 12 1 2 CM 157 6 147 3 74 9 64 1 40 3 10 2 38 7 40 6 5 1 NPT NPT 31 8 F 30 40 50 60 70 80 90 100 110 120 130 140 GPH 246 184 147 123 105 92 82 74 67 61 57 53 C 17 22 28 33 39 44 50 56 61 67 72 78 LPH...

Page 7: ...vicing and proper operation of the water heater Installation of water heater must be accomplished in such a manner that if the tank or any connections should leak flow will not cause damage to the str...

Page 8: ...proper and inefficient operation of the water heater producing carbon monoxide gas in excess of the safe limits This could result in serious injury or death Contact your local gas supplier for any spe...

Page 9: ...rtain it does not sag thereby obstructing the combustion air flow HARD WATER Where hard water conditions exist water softening or the threshold type of water treatment is recommended This will protect...

Page 10: ...to manufacturer s specifications If a positive lock up regulator is required follow these instructions 1 Positive lock up gas pressure regulators must be rated at or above the input Btu hr rating of t...

Page 11: ...s not intended for the constant relief of thermal expansion A properly sized thermal expansion tank must be installed on all closed systems to control the harmful effects of thermal expansion Contact...

Page 12: ...ature Pressure Relief Valve discharge line and 2 the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot If after manually operating th...

Page 13: ...eater and the risk of fire or explosion may result It can also create a risk of asphyxiation LOUVERS AND GRILLES Thefreeareasofthefreshairopeningsintheinstructionsthatfollowdonot takeintoaccountthepre...

Page 14: ...e provided with two permanent vertical ducts one commencing within 12 inches 300 mm of the top and one commencing within 12 inches 300 mm of the bottom of the enclosure The vertical ducts shall commun...

Page 15: ...er heater unless it is vented to the outdoors and has adequate air supply to avoid risks of improper operation explosion or asphyxiation Align the legs of the draft hood with the holes provided Insert...

Page 16: ...IN INCHES MAXIMUM CAPACITY OF PIPE IN CUBIC FEET PER HOUR LENGTH IN FEET NOMINAL IRON PIPE SIZES INCHES INPUT IN THOUSANDS BTU HR 1 2 3 4 1 1 1 4 1 1 2 2 2 1 2 3 4 10 175 360 680 1400 2100 3960 6300 1...

Page 17: ...allation shown in the Figures 15 and 16 Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion Before attaching the gas line be sure t...

Page 18: ...ter several tries turn the gas control knob clockwise to OFF and call your service technician or gas supplier SEE FIGURE A DANGER Hotter water increases the risk of scald injury Consult the instructio...

Page 19: ...r at the water heater Mixing valves are available at plumbing supply or hardware stores see Figure 6 Follow manufacturer s instructions for installation of the valves Before changing the factory setti...

Page 20: ...rmal See Condensation in this section OPERATIONAL CONDITIONS SMELLY WATER In each water heater there is installed at least one anode rod for corrosion protection of the tank Certain water conditions w...

Page 21: ...ll with a blue haze and small amounts of yellow or orange at the edges After several minutes of operation the burner screen may glow red You should check for sooting Soot is not normal and will impair...

Page 22: ...of the hardness lime For this reason it is recommended that a regular schedule for deliming be maintained ANODE ROD INSPECTION Property Damage Hazard Avoid water heater damage Inspection and replaceme...

Page 23: ...TANK 1 Turn off gas supply at the Main Gas Shutoff Valve if the water heater is going to be shut down for an extended period 2 Ensure the cold water inlet valve is open 3 Open a nearby hot water fauc...

Page 24: ...an condense on the cooler surfaces of the tank Droplets form and drip onto the burner or run on the floor This is common at the time of start up after installation and when incoming water is cold I Wa...

Page 25: ...Gas Control Replace Gas Control PILOT OUTAGE Dirty pilot burner Clean pilot assembly Thermocouple malfunction Replace pilot assembly and or thermocouple Defective Gas Control Replace Gas Control Ther...

Page 26: ...ocal codes shall govern their usage 4 The Tank Temperature Control should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat s...

Page 27: ...mostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE 1 UNIT WITH VERTICAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP...

Page 28: ...ermostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE 1 UNIT WITH HORIZONTAL STORAGE TANK LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING P...

Page 29: ...ired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE...

Page 30: ...rature Control should be wired to and control the pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temper...

Page 31: ...he pump between the water heater s and the storage tank s 5 The water heater s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control SINGLE FLUE 2 UNITS TWO TEMPERATU...

Page 32: ...32 NOTES...

Page 33: ...33 NOTES...

Page 34: ...34 NOTES...

Page 35: ...ion is also installed at the heater s and operational at all times The temperature and pressure relief valve installed on the heater is not an acceptable method 4 SERVICE AND REPAIR EXPENSES Under the...

Page 36: ...36 300 Maddox Simpson Parkway Lebanon TN 37090 Phone 615 889 8900 Fax 615 547 1000 Technical Service email 2tech lochinvar com www Lochinvar com Copyright 2015 Lochinvar LLC All rights reserved...

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