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Lochinvar CG150 - page 1
1 MODEL S CG(N,L)1 50 & CG(N ,L)200 COMMERCIAL GAS, GLASS-LINED, T ANK-TYPE W A TER HEA TER •INST ALLA TION •OPERA TION •MAINTENANCE•LIMITEDW ARRANTY PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER T O KEEP FOR FUTURE REFERENCE. Printed in U.S.A. 101 1 32288 0- 000 CAUTION TEXT IN BLACK BO ...
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Lochinvar CG150 - page 2
2 FOREWORD These designs comply with ANSI Z21.10.3 as a Booster type water heater . Detailed installation diagrams are found in this manual. These diagrams will serve to provide the installer with a reference for the materials and methods of piping necessary . It is highly essential that all water , gas piping and wiring be installed as shown on th ...
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Lochinvar CG150 - page 3
3 GENERAL SAFETY INFORMA TION PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualied service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water . IF THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT OPERA TE HEA TER UNTIL ALL C ...
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Lochinvar CG150 - page 4
4 OPERA TION OF THESE F ANS CAN PRODUCE A NEGA TIVE DRAFT IN THE AREA OF THE W A TER HEA TER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE CHIMNEY OR VENT PIPE. The venting of the water heater should be inspected by a qualied service technician at the time of installation and periodically thereafter to ensure a down-draft con ...
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Lochinvar CG150 - page 5
5 possibility of changing the orientation by accidentally overtightening the inlet supply . Improper orientation of the Eliminator may cause temperature buildup issues or spells of colder than usual water temperatures. HIGH LIMIT SWITCH The dig ital t her most at ( see Figu re 3 ) co ntains t he high lim it ( ener gy cutof f) s ensor . Th e high li ...
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Lochinvar CG150 - page 6
6 INST ALLA TION INSTRUCTIONS REQUIRED ABILITY INST ALLA TION OR SERVICE OF THIS W A TER HEA TER REQUIRES ABILITY EQUIV ALENT TO THA T OF A LICENSED TRADESMAN IN THE FIELD INVOL VED. PLUMBING, AIR SUPPL Y , VENTING, GAS SUPPL Y AND ELECTRICAL WORK ARE REQUIRED. W ARNING F AILURE TO FOLLOW THESE INSTRUCTIONS CAN RESUL T IN SERIOUS PERSONAL INJUR Y O ...
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Lochinvar CG150 - page 7
7 CAUSING CARBONING OR SOOTING OF THE COMBUSTION CHAMBER, BURNERS AND FLUE TUBES AND CREA TES A RISK OF ASPHYXIA TION. Where an exhaust fan is supplied in the same room with a heater , sufcient openings for air must be provided in the walls. UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRA WN INTO THE ROOM THROUGH THE CHIMNEY , CAUSING POOR COMBUSTI ...
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Lochinvar CG150 - page 8
8 FIGURE 7 • Where a separate vent connection is not available and the vent pipe from the heater must be connected to a common vent with an oil burning furnace, the vent pipe should enter the smaller common vent or chimney at a point above the large vent pipe. MUL TIPLE HEA TER MANIFOLD Whe n hor izonta lly manif olding t wo o r more h eaters ven ...
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Lochinvar CG150 - page 9
9 GAS PIPING Contact your local gas service company to ensure that adequate gas service is available and to review applicable installation codes for your area. Size the main gas line in accordance with T able 2. The gures shown are for straight lengths of pipe at 0.5 in. W .C. pressure drop, which is considered normal for low pressure systems. N ...
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Lochinvar CG150 - page 10
10 Do not subject the combination gas valve to inlet gas pressures of more than 14.0” W .C. - natural gas. A service regulator is necessary if higher gas pressures are encountered. Manifold gas pressure in inches of water column is 3.5. The gas pressure specied refers to ow pressure taken at pressure tap of automatic gas valve while heater ...
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Lochinvar CG150 - page 11
11 INST ALLA TION DIAGRAMS GENERAL The type, size and location of the relief valves must be in accordance with local codes. The locations of the relief valves shown in the installation diagrams are typical. The heater has a factory installed high temperature limit switch and temperature and pressure relief valve. Cold water lines to heater should b ...
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Lochinvar CG150 - page 12
12 VERTICAL ST ORAGE T ANK AND FORCED CIRCULA TION DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y T O OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT W A TER SUPPLIED TO FIXTURES. HORIZONT AL ...
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Lochinvar CG150 - page 13
13 DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V AL VE FOR HOT W A TER SUPPLIED TO FIXTURES. TWO TEMPERA TURE - ONE HEA TER HIGH TEMPERA TURE STORAGE WIT ...
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Lochinvar CG150 - page 14
14 INST ALLA TION DIAGRAMS-SIDE INLET/OUTLET USAGE DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSARY TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD V ALVE FOR HOT W A TER SUPPLIED TO FIXTURES. A listed temper ...
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Lochinvar CG150 - page 15
15 ONE OR TWO TEMPERA TURE - ONE HEA TERS,HIGH TEMPERA TURE STORAGE WITH OR WITHOUT RECIRCULA TION HEA TER WITH OR WITHOUT MIXING V AL VE HEA TER WITH MIXING V AL VE AND RECIRCULA TED SANITIZING LOOP NO TE 1 : T OGGLE SWITCH CONTROLS 180°F (82°C) W A TER CIRCULA TION. INST ALL ON OR CLOSE TO DISHWASHING MACHINE. TOGGLE SWITCH MUST BE CLOSED (ON) ...
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Lochinvar CG150 - page 16
16 TWO TEMPERA TURE - TWO PRE-HEA TERS WITH MIXING V AL VE OR BOOSTER HEA TER WITH OR WITHOUT BUILING RECIRCULA TION TWO PRE-HEA TERS WITH MIXING V AL VE TWO PRE-HEA TERS WITH BOOSTER HEA TER DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TE ...
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Lochinvar CG150 - page 17
17 MEDIUM TEMPERA TURE - ONE HEA TER WITH AUXILIAR Y ST ORAGE T ANK FORCED CIRCULA TION WITH OR WITHOUT BUILDING RECIRCULA TION VERTICAL ST ORAGE T ANK HORIZONT AL ST ORAGE T ANK DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERA TURE A T FIXTURES. SEE W A TER TEMPERA TURE CONTROL W ARNING ON P AGE 20. IF HIGHER PREHEA T TEMPERA TURES A ...
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Lochinvar CG150 - page 18
18 OPERA TION IMPORT ANT A qualied person must perform the initial ring of the heater . At this time the user should not hesitate to ask the individual any questions which they may have in regard to the operation and maintenance of the unit. An Operational Checklist is included at the rear of this manual. B y using this checklist the user may ...
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Lochinvar CG150 - page 19
19 A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner . Do not try to light the burner by hand. B. BEFORE OPERA TING smell all around the appliance area forgas.Besure tosmellnexttothe oorbecausesome gasisheavierthanairandwi ...
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Lochinvar CG150 - page 20
20 be set for 120° to 180°F water temperature, but 120°F is the recommended starting point. It is suggested the dial be placed on the lowest setting which produces an acceptable hot water supply . This will always give the most energy efcient operation. The temperature control has a 4°F (2°C) xed differential. PREVENTIVE MAINTENANCE CHEC ...
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Lochinvar CG150 - page 21
21 NOTE: 1. Remove main burners from unit. 2. Check that burner venturi and ports are free of foreign debris. 3. Clean burners with bristle brush and/or vacuum cleaner - DO NOT distort burner ports or pilot location. 4. Reinstall burners in unit. Make sure front and rear of burners are installed correctly in burner support brackets. Also check for ...
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Lochinvar CG150 - page 22
22 RELIEF V AL VE At least once a year , the temperature and pressure relief valve should be checked to ensure that it is in operating condition. Lift the lever at the top of the valve several times until the valve seats properly and operates freely . If the appliance installation includes other relief valves, such as in “remote” storage tanks ...
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Lochinvar CG150 - page 23
23 Example 2: If initial inspection after 6 months shows 2” of lime accumulation. Therefore, the heater should be delimed every 3 months. FIGURE 14 DELIMING SOL VENTS Hydrochloric base acids are not recommended for use on glass lined tanks. CAUTION Observe handling instructions on label of product bein g used. T ANK CLEANOUT PROCEDURE The followi ...
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Lochinvar CG150 - page 24
24 VERIFY PROPER OPERA TION AFTER SER VICING. REPLACEMENT P ARTS Replac eme nt par ts may be o rdere d t hrou gh Lo chi nvar deale rs, auth or ized ser v ic ers or dist rib utor s. Refer to the Y ellow Pages for where to call o r c ontac t t he Pa rt s Department, 300 Maddox Simpson Pkwy , Lebanon, TN 37090, Phone: 615-889-8900 • Fax: 615-882-291 ...
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Lochinvar CG150 - page 25
25 SEQUENCE OF OPERA TION FLOW CHART Description of this ow chart can be found in the “SEQUENCE OF OPERA TION” section found on page 18. Switch power on to unit. Thermostat calls for heat. Ignition Control Board performs diagnostic check on components Ignition Control Board sends power to Exhaust Inducer Exhaust Inducer engages Prover Switch ...
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Lochinvar CG150 - page 26
26 OPERA TIONAL CHECKLIST This checklist in conjunction with “TROUBLESHOOTING” and the “SEQUENCE OF OPERA TION” should be used as an on-the-job troubleshooting guide to identify the cause of incorrect system operation and suggest a remedy for its correction. Because improper piping and wiring can result in unsatisfactory system performance, ...
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Lochinvar CG150 - page 27
27 Limited Warranty 1 . THE TANK I f the glass-lin ed tank in this water heate r shall pro ve upon exa mination by t he w arrantor to have leaked due to natural corr osion f ro m potable w ater therein, during the f i r st T HR EE year s after initial in stallation, the w arrantor will supply a complete new Lochinvar w ater heater of equi valent si ...
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Lochinvar CG150 - page 28
28 Copyright © 201 1 Lochinvar , LLC, All rights reserved. 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 T echnical Service email: 2tech@lochinvar .com www .Lochinvar .com ...
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