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instruction manual
commercial gas water heaters
models suf-60-120
through suf-100-250
series 100 & 101
installation - operation - ser Vice
500 Tennessee Waltz Parkway
Ashland City, TN 37015 - maintenance - limited warranty
ANSI / NSF 5
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of
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t able of contents SAFE iNSTALLATiON, USE AND SEr ViCE.......................................... 3 Supply Gas Line Installation ............................................................ 39 GENErAL SAFETy iNFOrmATiON ...................................................... 4 Supply Gas Regulator Installation ................................................... 40 Precautions ........................................................................................ 4 Electrical Wiring ..............
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safe installation, use and ser Vice The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. read and obey all safety messages and instructions throughout this manual. it is very important that the meaning of each safety message is understood by you and others wh
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general safety information precautions hydrogen g as f lammable DO NOT USE THiS APPLiANCE iF ANy PAr T HAS BEEN UNDEr WATEr . immediately call a qualified service agency to inspect the appliance and to make a determination on what steps should be taken next. Explosion Hazard if the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified Flammable hydrogen gases service agency. may be present. 1. External fire. Keep all ignition source
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general safety information Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Avoid all ignition sources if you smell gas. Do not install water heater on Do not expose water heater controls to excessive gas carpeted floor. pressure. Do not operate water heater if Use only the gas shown on the water heater rating label. flood damaged. Maintain require
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introduction Thank you for purchasing this water heater. Properly installed Detailed installation diagrams are also found in this manual. and maintained, it should give you years of trouble free service. These diagrams will serve to provide the installer with a reference. it is essential that all venting, water piping, gas a bbre Viations used piping and wiring be installed as shown. Abbreviations found in this instruction manual include : Particular attention should be given to the installat
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features and components blower/burner assembly detail basic o peration INTAKE AIR COMBUSTION The water heaters covered in this manual have a helical coil (combustion air) BLOWER shaped heat exchanger that is submerged in the storage tank. CONNECTION The water heater’s main Burner is a radial design burner, it 3 INCH PVC is mounted on the top and fires downward through the heat exchanger. This is a forced draft burner; hot burning gases are forced through the heat exchanger under pressure an
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t op Views 6 7 120,000 & 150,000 8 9 Btu/hr MODELS 10 2 TOP VIEW 5 11 4 12 13 3 2 14 FRONT 15 16 1 17 figure 3 suf 120 & 150 components 11. Combustion Blower. 1. Water Heater’s 120 VAC on/off switch. 12. Blocked Exhaust (vent) switch. Normally closed contacts that open on a rise in pressure. This switch is used to insure the 2. Powered anode rods. The water heater’s covered in this Exhaust (vent) piping connected to the water heater is not manual are equipped with powered (non sacrificial) a
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t op Views (cont) 199,000 & 250,000 7 Btu/hr MODELS 10 8 9 TOP VIEW 2 6 5 11 4 12 13 3 2 14 FRONT 15 16 1 17 figure 4 suf 199 & 250 components 10. Vent connection (exhaust elbow) - 3 inch PVC. 1. Water Heater’s 120 VAC on/off switch. 11. intake air connection - 3 inch PVC. 2. Powered anode rods. The water heater’s covered in this 12. Blocked Exhaust (vent) switch. Normally closed contacts that manual are equipped powered (non sacrificial) anode rods. open on a rise in pressure. This switch is u
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4 5 5 4 13 6 14 3 2 3 7 8 2 9 15 10 11 1 12 16 LEFT SIDE RIGHT SIDE 120,000 & 150,000 Btu/hr MODELS 199,000 & 250,000 Btu/hr MODELS figure 5 side Views 1. Cleanout access panel, covers water heater cleanout Valve Discharge Pipe requirements: on page 16. opening. 10. Lower Temperature Probe, 1 of 2 temperature probes. The 2. CCB enclosure - see beginning on page 8 for description. water heater’s control system monitors this probe to detect water temperature in the lower portion of the storage t
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I A V DRA N V L E RAIN VALVE D T & P VALVE T & P VALVE INTAKE AIR INTAKE AIR 3 INCH PVC 3 INCH PVC installation considerations r ough in dimensions SUPPLY GAS INTAKE AIR CONNECTION CONNECTION 3 INCH PVC WATER OUTLET HEIGHT I FRONT BACK T & P VALVE E F B H D VENT CONNECTION CLEANOUT 3 INCH PVC 3/4” NPT DRAIN (exhaust elbow) 1 1/2” NPT WATER INLET CONDENSATE DRAIN CONNECTION 1/2 INCH PVC C A G These designs comply with the current edition of the American National Standard for Gas Water Heaters,
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gas line connection siZe storage capacities t able 1 t able 2 † moDEL SERIES NATURAL GAS PRoPANE GAS moDEL U. S. GALLoNS LITERS SUF 60 120 100/101 3/4 "NPT 3/4 "NPT SUF 60 120 60 227 SUF 100 150 100/101 3/4 "NPT 3/4 "NPT SUF 100 150 100 379 SUF 100 199 100/101 3/4 "NPT 3/4 "NPT SUF 100 199 100 379 SUF 100 250 100/101 3/4 "NPT 3/4 "NPT SUF 100 250 100 379 † Depending on the installed equivalent length, and/or the number of appliances connected, the supply gas line size may have to be increased b
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There is a risk in using fuel burning appliances such as gas water hard water heaters in rooms, garages or other areas where gasoline, other Where hard water conditions exist, water softening or the flammable liquids or engine driven equipment or vehicles are threshold type of water treatment is recommended. This will stored, operated or repaired. Flammable vapors are heavy and protect the dishwashers, coffee urns, water heaters, water piping travel along the floor and may be ignited by t
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installation reQuirements g as pressure r eQuirements t able 4 *mANiFOLD PrESSUrE †miNimUm SUPPLy PrESSUrE ‡mAximUm SUPPL y PrESSUrE moDEL NATURAL GAS PRoPANE GAS NATURAL GAS PRoPANE GAS NATURAL GAS PRoPANE GAS SUF 60 120 4” W. C. (1.0 kPa) 10” W. C. (2.49 kPa) 4.9” W. C. (1.22 kPa) 11” W. C. (2.74 kPa) 10.5” W. C. (2.62 kPa) 14” W. C. (3.49 kPa) 4” W. C. (1.0 kPa) 10” W. C. (2.49 kPa) 4.9” W. C. (1.22 kPa) 11” W. C. (2.74 kPa) 10.5” W. C. (2.62 kPa) 14” W. C. (3.49 kPa) SUF 100 150 0” W. C. (0
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mixing Val Ves HOT WATER OUTLET Water temperature over 125°F (52°C) can cause severe burns instantly 12” TO 15” resulting in severe injury or death. (30-38 cm) Children, the elderly and the TEMPERED WATER physically or mentally disabled are at OUTLET highest risk for scald injury. Feel water before bathing or CHECK COLD showering. VALVE WATER Temperature limiting devices such as INLET MIXING mixing valves must be installed CHECK VALVE when required by codes and to VALVE ensure safe temperatures
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t emperature- pressure r elief Val Ve CAUTION Water Damage Hazard Explosion Hazard Temperature-Pressure Relief Valve discharge • pipe must terminate at adequate drain. Temperature-Pressure Relief Valve must comply with ANSI Z21.22- CSA 4.4 and ASME code. t&p Valve discharge pipe requirements: Properly sized temperature- • Shall not be smaller in size than the outlet pipe size of the pressure relief valve must be valve, or have any reducing couplings or other restrictions. installed in opening p
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c ondensate drain c ombustible material storage The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely. Fire or Explosion Hazard Condensate drains from the water heater at the exhaust elbow located at the bottom. The field installed condensate drain line Do not store or use gasoline or other flammable vapors and must not be elevated above the condensate drain connection liquids i
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unusually tight construction a ir r eQuirements in unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor Breathing Hazard - Carbon Monoxide Gas barrier, etc.) additional air must be provided using the methods described in the Confined Space section that follows. Install water heater in accordanc
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Alternatively a single permanent opening, commencing within 12 f resh a ir o penings f or c onfined spaces inches (300 mm) of the top of the enclosure, shall be provided. The following instructions shall be used to calculate the size, See Figure 11. The water heater shall have clearances of at number and placement of openings providing fresh air for least 1 inch (25 mm) from the sides and back and 6 inches (l50 combustion, ventilation and dilution in confined spaces. The mm) from the fron
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o utdoor a ir t hrough t wo Vertical ducts a ir f rom o ther indoor spaces The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only. do not refer to these illustrations for the purpose of vent installation. See Venting installation on page 22 for complete venting installation instructions. figure 14 The confined space shall be provided with two permanent openings, one commencing within 12 inches (300 mm) of the t
