Instruction/ maintenance manual of the product TG-237I-N(X)A Bradford-White Corp
Go to page of 92
238-48022-00D 7/11 Bradford White EverHot Tankless Gas Water Heater For Interior Installation TG-150I-N(X), TG-180I-N(X), TG-199I -N(X), TG237I-N(X) & TG-237I-N(X)A INSTALLATION AND OPERATION .
2 SECTION I: IMPORTANT INFORMATION TABLE OF CONTENTS I IMPORTANT INFORMATION ......... 2 VII ELECTRICAL CONNECTIONS ... 49 II SPECIFICATIONS .......................... 6 VIII OPERATING INSTRUCTIONS .... 60 III INSTALLATION INSTRUCTIONS ...............
3 DO NOT store or use gasoline or other flamm able, combustibl e, or corrosive vapors and/or liquids in the vicinity of this or any other appliance. Failure to properly install the vent and air intake (if applicable ) system coul d result in prope rty damage, personal injury, or death.
4 DO NOT tamper with or alter the water h eater and/or controls. DO NOT operate water heater with jum pered or absent controls or safety devices. DO NOT operate water heater if any external part ha s been under water.
5 Liquefied petroleum ga ses/propane ga s is heavier than air and will remain at floor level if there is a leak. Basements, crawl spaces, cl osets and areas below gr ound level will serve as pockets for accumulation of leakin g gas. Before lighting, smell all around the appliance area for gas.
6 SECTION II: SPECIFICATIONS Table 1. Specifications . * Minimum flow may vary slightly depending o n the temperature setting and the inlet water temperature. ** For commercial and hydr onic applications requ iring higher temperatures. Requires the use of an optional controller (P/N 239-47805-00).
7 Dimensions Table 2. Water Heater Dimensions (Approx.). DIM DESCRIPTION TG-150I-N(X) TG-180I-N(X) TG-199I-N(X) in. (mm) TG-237I-N(X) TG-237I-N(X)A in. (mm) A Width 14 (355.6) 18 1/2 (470) B Depth * 9 5/8 (244.5) 9 1/8 (230.5) C Height - Unit 22 7/8 (582) 23 5/8 (600) D Height - w ith brackets 25 1/2 (648.
8 Figure 1. Graph Showing Pressure Drop v. Water Flow Rate. 0. 0 1. 0 2. 0 3. 0 4. 0 5. 0 6. 0 7. 0 8. 0 9. 0 10. 0 0 25 50 75 100 125 150 Figure 2. Graph Showing Water Flow Rate v.
9 SECTION III: INSTALLATION INSTRUCTIONS CAUTION If building cold water suppl y has a back-flow prevente r, check valve or wat er meter with check va lve, provisions for thermal expansion of water in the hot water system must be p rovided.
10 WARNING UNPACKING INSPECT SHIPMENT carefully for any signs of damag e. 1. All equipment is carefully manufactured, insp ected and packed. 2. Any claims for damage or shorta ge in shipment must be file d immediately with Bradford White Corporation and noted on the Bill of Lading.
11 MOUNT WATER HEATE R ON T HE W ALL Determine the proper height and location for the water heater to be installe d. Consider the venting system, as well as the water and gas connections. Allow enough room for servi cing the water heater and maintain the clearances f rom combusti ble materials.
12 State Regulations NOTICE BEFORE INSTAL LATIO N Bradford White direct-vent applia nce mu st be installed by a state qualifi ed or licen sed contractor. If you are not properly trained, you must not install this unit. IMPORTANT: In the State of Massachuse tts (248CMR 4.
13 SECTION IV: WATER CONNECTIONS WARNING Failure to install and maintain a new, listed pressu re relief valve will release the manufacturer from any claim, which might result from excessive temperature and pressures. Keep clear of the pressure relief valve di scharge line outlet.
14 potable water. Unions should be installed on both the hot and cold water lines fo r future servicing and disconnection of the water heater. Install a shut -off valve in the cold water sup ply line.
15 Figure 3. Scald Warning . Table 5. Approximate scald time/temperatures. APPROXIMATE TIME/TEMP ERATURE RELATIONSHIPS IN SCALDS 120°F (49 C) More than 5 minutes 125°F (52 C) 1½ to 2 minute.
16 Figure 4. Recommended Piping for a Basic Installation..
17 Figure 5. Recommended Piping for a Circulation Systems ..
18 Recommended Piping for Po wer Failure Freeze Protection As long as electrical power a nd gas are su pplied to the EverHot water h eater, freeze protection is provided to the heat exchanger and pipi ng inside the wate r heater with ambient temperatures as col d as -30 F (-34 C), when protected from direct wi nd exposure.
19 PRESSURE RELIEF VALVE Keep clear of the pressure reli ef valve di scharge li ne outlet. The discharge may be hot enough to cause scald injury. The water is unde r pressure and may splash.
20 Combination Water and Space Heating Applications – Commercial Use Water Heaters Only Commercial use water h eaters may be used for space heatin g or combination space heating/potable water heating applications, provided the followin g requirements and re commended piping di agrams are carefully followed.
21 Note: in Massachusetts, the following must be done: Tempered potable water m ust meet temperatures in 248 CM R. All water piping must be insulated in accordance with 780 CMR (Massachu setts energy code). 50 feet maximum distance from water heater to space heating lo ad (developed length).
22 SECTION V: VENTING WARNING The venting system must be properly installed. F a ilure to properly install the vent system could result in property damage, personal injury, or death.
23 VENTING The venting instructions must be followed to avoid re stri cted combustion or recirculation of flue gases. Such conditions cause sooting or risks o f fire and asphyxiation.
24 Vent / Air Intake Terminal Locations Direct Vent Terminal Location Plan the vent system layout so that proper cl earances are maintai ned from plumbing and wiring. Before the vent is installed, determine the vent pipe termin at ion location as shown below in the Vent Termi nal Location illustration.
25 Vent pipes serving power vented appliances are clas sified by building cod es as “vent connectors.” Required c learanc es from comb ustible mater ials must be provided in accordance with information in this manual under Location of Wate r Heater and Clearan ces, as well as the National Fuel Gas Code an d local codes.
26 Prior to the Installation of the Ev erHot Direct Vent System The EverHot TG series wa ter heaters have two adj ustable wall mounting supp ort brackets fitted on the top and bottom of the water heater casing.
27 Figure 10. Illustration Showing the Maximum Vent Height before the Condens ate Collector Must be Used. Figure 11. Illustration Showing a Horizontal Termination Insta llati on Using the Condensate Coll ector (and a trap).
28 Vertical Direct Vent Installations The EverHot TG series water heaters can also be install ed to vent vertically throug h the roof using a vertical discharge a dapter, optional vent extension tu bes, the condensate collector, a roof terminal, and a universal lead tile.
29 Combustion Blower Dip Switch Settings To assure optimum efficiency and red uced noise levels , the combustion blower switch ha s two dip switch settings. Dip switch numb er 1, the top dip switch, is shipped from the factory set to the ON po sition to compensate for the maximum vent/air intake length.
30 Installation of Venting System Components WARNING Refer to the Bradford White EverHot TG series water heater Inst allation and Operation Instruction Manual for details conce rning vent system terminat ion po sitions/clearances, allowable ve nt pipe lengths, and in what position dip switch n umber 1 should be placed.
31 Condensate When the total vent system length is greater than 5 ft (1.52 m), co ndensate will form which could dam age the water heater. For vent lengths great er than 5 ft (1.
32 General Installation Instructions Joint Connection Figure 15. Illustration Showing How to Properly Connect Venting. Firmly press the vent pipe sect ions together to ensure that the gaskets properly seal. Coping with Condensation Figure 16. Illustration Showing How to Ensure Proper Condensate Drainage.
33 Condensate Drain Every vent system should utilize the conden sate collector unle ss installed with a total vent length of less than 5 ft (1.52 m). The condensate collector i s incor porated into the water heater’s vent connectio n.
34 Venting Parts & Dimensions Components Needed for Direc t Vent Applications Figure 19. Wall Discharge Terminal Plate, Le ngth = 12 in. (305 mm), p/n 223157. Figure 20. Vent Extensions, (3) Different Lengths. 10 in., p/n 224051 19.5 in., p/n 224052 39 in.
35 Figure 23. Vent Pipe Clamp, p/n 169044. Figure 24. Vertical Discharge Roof Terminal, p/n 184118-S . Figure 25. Pitch Roof Flashing. 1/12 Pitch, p/n 189950 8/12 Pitch, p/n 189952 6/12 Pitch, p/n 189951 Figure 26. Flat Roof Flashing, p/n 146141. Figure 27.
36 Installation Instructions - Ev erHot ® Horizontal Discharge Vent Sy stem Identify the Vent Location Figure 28. Illustration Showing How to Locate the Vent for a Horizontal Di scharge. Steps: 1. Place horizontal discharge adapter on water heate r. 2.
37 Measure Dimension to Fit Figure 29. Illustration Showing How to Determine the Proper Length for the Wall Discha rge Terminal. Figure 30. Illustration Showing How to Properly Cut a Vent Extension.
38 Final Installation of the Vent Sy stem Figure 31. Illustration Showing the Installati on of a Horizontal Vent System. From the outside of the building, slide the wall disc harge te rminal through the vent wall passage. A supplied rubber wall plate can be install ed on the exterior of the building.
39 Installation Instructions - Ev erHot ® Vertical Discharge Vent Sy stem Figure 32. Illustration Showing the Installati on of a Vertical Vent System. Identify the Vent Location Determine the location where the roof discha rge terminal will be installed.
40 Mounting the Vent Sy stem – Vertical Discharge Figure 34. Illustration Showing the Installation of Vertical Discharge Venting. Vent connections must be firmly pres sed togeth er, so that the gaskets fo rm an airtight se al. Secure the system with a vent pipe clam p or perforated hang er iron.
41 To Connect the Exhaust Vent: Refer to the venting manufacturer’s installation in st ructions for t he specific exh aust vent sy stem. Horizontal Discharge for TG-237I Models The air intake must be located in relation to the exhaust, as shown below.
42 Figure 37. Illustration Showing the Installation of Venting for TG-237I Models. Figure 38. Illustration Showing the Installation of Concentric Vent Termination for TG-237I Models.
43 Figure 39. Illustration Showing the Installati on of Vertical Terminations for TG-237I Models. High Altitude Installations The default setting for the water is 0-2,000 ft (0-61 0 m) with dip switch numbers 2 and 3 in the OFF position.
44 Figure 40. Template to be Used for Cutting a Hole for the Coaxial Vent Pipe Used on TG-150I , TG-180I , and TG-199I Models..
45 Venting Suppliers Table 10. Venting Suppl iers for TG-150I, TG-180I , and TG-199I Models. Manufacturer Product Bradford White Rolux Vent System Rinnai/Ubbink Rolux Vent System Heat-Fab Saf-T Vent SC system Metal-Fab Corr/Guard Vent/Air Intake System Table 11.
46 SECTION VI: GAS CONNECTIONS WARNING Connect this water heater only to the ty pe of gas as shown on the rating plate. Use clea n black iron pipe or equivalent material approved by local codes and ordinances. Dirt and scale from th e pipe can enter the gas valve a nd cause it to malfunctio n.
47 Check the type of ga s and the gas inl et pressure be fore connecting the EverHot ® water heater to the gas supply. If the gas su pply type does not match the type shown on the water heater rating pl ate, then DO NOT connect the water he ater. Contact your Bradford White supplier for the correct water heater.
48 INITIAL OPERATION AN D TESTING (INSTALLER ONLY ) 1. Open the gas and water supply valves to the water heater. 2. Check for water and gas le aks. Use soap solution to che ck for gas leaks.
49 SECTION VII: ELEC TRICAL CONNECTIONS WARNING Turn off or disconnect the electrical power supply to the water heater before servicing. L abel all wires prior to disconn ection when se rvicing controls. Wiring erro rs can cause imp roper and dangerous operation.
50 WARNING DO NOT adjust any dipswitch settings on PC board e xcept dip switch number 1, if required, for vent length or unless instructed to do so. RELA Y 1 IG FROST SENSING SWITC H ANTI- FRO ST HEA TER IG NI TION COMB U STION FA N 3 A(FUSE) HO T NE UTRAL VARI S TOR DC1 2.
51 Figure 42. Wiring Diagram for TG-150I-N(X), TG-180I-N(X), and TG-199I-N(X) Models..
52 Figure 43. Wiring Diagram for TG-237I-N(X) and TG-237I-N(X)A Models..
53 TEMPERATURE CONTROLS The front panel temperature control allows th e end user to set the hot wate r supply temperature and will display certain diagnostic cod es of the water heater if there is a malfunction.
54 WARNING Do not adjust this water h eater in any residential application abov e 120ºF. If this water heater is used in a commercial application where temperatures in excess of 120ºF are required, use an ASSE approved mixing device. WARNING This water heater is equipped with an energy cut out device to prevent overheating.
55 °F Set Temperature In Use Priority e n d l e s s h o t w a t e r s y s t e m CAUTION: Hot ter water in cr e ases t h e r i s k of scald injury. Before changing temperature setting, see instruction manual.
56 6. Mount the control to the wall using the holes dr illed and with the screws supplied. Note: Plastic wall anchors may be required if the control is no t located over a stud when mounting on wallboard.
57 INITIAL OPERATION AN D TESTING OF CONTRO LS (INSTAL LER ONLY) 1. Turn on power to the water heater a nd fully open a hot water tap. 2. Check the operation of the water heater. Check the operation of the remote tempe rature control(s). Check the operati on of the power failure protection system (drain sol enoids).
58 Table 20. (FM) Combusti on Fan Motor. Wire Color Voltage Resistance Connector No. Pin Nos. Red-Black 6-45 VDC n/a E1 1-2 White-Black 5-10 VDC 9.2-9.4k ohms E1 2-4 Yellow-Black 11-13 VDC 3.5-3.9k ohms E1 2-3 Set your meter to the hertz scale. Reading across the white and black wires at terminals 2 and 4 you should read between 60 and 420 hertz.
59 With the power off, you can check th e continuity through the surge protector. Pl ace a meter lead on the top pin #1 of the surge protector and pin #3 on the b otto m of the surge protector. Check across the top pin #3 and the bottom pin #1. If you read continuity acro ss these two points, the surge p rotector is good.
60 SECTION VIII: OPERATING INSTRUCTIONS WARNING Water heaters are he at-producing app liances. To avoid dam age or injury there must be no materials stored against th e water heater o r direct vent sy stem, and proper care must be taken to avoid unnecessary contact (especially by children ) with the water heater a nd direct vent system.
61 LIGHTING INSTRUCTIONS FOR YOUR SAFETY READ BEFO RE OPERATIN G WARNING: If you do not follo w these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This water heater does not have a pilot.
62 CAUTION In climates where below freezing tempe ratures may occur, the water h eater must be drained when power is off to the water heater to prev ent free ze damage to the heat exchanger. Drain sol enoids are recommended to prevent freeze damage during p ower failures in cold climate regions.
63 2. To set the de sired temperature on the control, all hot water faucets must be closed. If there are remote controls installed, press the “Priority” button on the cont rol you want to change the setting on and the “Priority” indicator light will glow.
64 SCALDING Figure 49. Scalding Warning. This water heater can deliver scalding temperature water at any faucet in the system. Be careful whenever using hot w ater to avoid scalding injury. Cer tain applianc es, such as dishwas hers and automatic clothes washers may require increased wate r temperature.
65 FIRST AID FOR SCALDS 1. Apply cold water to burned area for 30 minutes to re duce the heat in the skin a nd prevent deeper burning. Never use butter, oils, or ointm ent to cover the burn. They may retain the heat. 2. Use a blanket to keep the scalded perso n warm.
66 Code Code Description Remedy 12 Flame Failure Check that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue outlet. Ensure gas line, meter, and/or regulator is sized pro perly. Ensure gas type and pressure is correct.
67 Code Code Description Remedy 72 Flame Sensing Device Fault Ensure flame rod is touching flame when unit fires. Check all wiring to flame rod for damage. Remove flame rod and check for carbon b uild-up; clean with sand paper. Check inside burner chamber for any foreign material blocking flame at fla me rod.
68 SECTION IX: MAINTENANCE WARNING Always turn off the electrical power supply, the manual ga s valve, and the manual wate r control valve whenever servicing this applian ce. KEEP THE WATER HEATER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
69 CAUTION Before manually operating the valve, make su re t hat a drain line has been attached to the valve to direct the discharge to a n open drain. Failure to take this precaution could mean contact with extremely hot water passing out the valve during this checking operation.
70 Figure 51. Piping for Mineral Scale Flushing. Rinnai Wa te r Heater Ga s S u ppl y V1 V3 V2 V4 H1 H2 H3 Ci rc u la ting Pump 5 g all on pai l o f vi r gin, fo od g rad e , w h i t e vin e g a r (o r vir gin, fo od gr a d e , ci t ri c a c i d) .
71 Common Troubleshooting Commen ts on the Operation of the EverHot ® Tankless Water Heater Comment: I don’t have any hot water when I open the tap! Make sure the gas and electricity is turned on to t he water heater. The temperature display should have the green light lit when a hot wate r tap is open and th e water heater is operating.
72 SECTION X: PARTS LIST TG-150I, TG-180I , and TG-199I Models.
73 TG-199I-N TG-199I-X TG-180I-N TG-180I-X TG-150I-N TG-150I-X No Description Quantity 001 Main Body 1 1 1 1 1 1 002 Wall Fitting Bracket 2 2 2 2 2 2 003 Rubber Bushing 1 1 1 1 1 1 004 Conne ction Rei.
74.
75 TG-199I-N TG-199I-X TG-180I-N TG-180I-X TG-150I-N TG-150I-X No Description Quantity 103 24 Burner Unit Assembly ( LPG) - 1 - 1 - 1 103 24 Burner Unit Assembly ( NG) 1 - 1 - 1 - 110 Manifold Assembl.
76.
77 TG-199I-N TG-199I-X TG-180I-N TG-180I-X TG-150I-N TG-150I-X No Description Quantity 100 Gas Control Assembly 1 1 1 1 1 1 101 Blind Screw 2 2 2 2 2 2 102 3/4 Gas Inlet 1 1 1 1 1 1 400 3/4 Water Inle.
78.
79 TG-199I-N TG-199I-X TG-180I-N TG-180I-X TG-150I-N TG-150I-X No Description Quantity 712 Frost Sensing Switch 1 1 1 1 1 1 713 Anti Frost Heater (120V) 1 1 1 1 1 1 715 Valve Heater (120V) Assembly 1 .
80 TG-237I Models.
81 TG-237I-N TG-237I-X TG-237I-NA TG-237I-XA No Description Quantity 001 Main Body 1 1 1 1 002 Heat Protection Plate 1 1 1 1 004 Front Panel Assembly 1 1 1 1 007 Wall Fitting Bracket 2 2 2 2 010 Front.
82.
83 TG-237I-N TG-237I-X TG-237I-NA TG-237I-XA No Description Quantity 101 Screw 2 2 2 2 103 Manifold Assembly (LPG) - 1 - 1 103 Manifold Assembly (NG) 1 - 1 - 104 Burner Unit Assembly (LP G) - 1 - 1 10.
84.
85 TG-237I-N TG-237I-X TG-237I-NA TG-237I-XA No Description Quantity 015 Rubber Bushi ng 1 1 1 1 022 Fan Rectifier 1 1 1 1 100 Gas Conne ction 1 1 1 1 101 Screw 2 2 2 2 102 Gas Cont rol Assembly 1 1 1.
86.
87 TG-237I-N TG-237I-X TG-237I-NA TG-237I-XA No Description Quantity 708 120V Anti-Frost Heater Assembly 1 1 1 1 712 120V Valve Heater Assembly 1 1 1 1 714 Thermal Fu se Harness 1 1 1 1 716 Thermistor.
88 SECTION XI: WARRANTY What does this Limited Warr anty Cover? This limited warranty covers b oth the heat exchanger and component parts for leakag e or other malfunction caused by defects in materials and/or wo rkmanship.
89 all circulating water flow s through the water heater, and whe re an on-dema nd recirculation system is n ot incorpora ted. On-demand recirculation i s defined as a hot water re-c ir culating loop or system that utilize s existing hot and cold lines or a dedicated return line, and only acti vates when hot water is used.
90 EverHot® Limited Warranty Registration In order to confirm Limit ed Warranty coverage at 12 year s for Residential Applications 1 , complete the information below and click submit.
91 NOTES:.
Ambler, PA For U.S. and Canada field service, Contact your professional installer or local Bradford White representative. Sales/ 800-523-2931 Fax/ 215-641-1670 Parts Fax/ 215-641-2180 Technical Suppor.
An important point after buying a device Bradford-White Corp TG-237I-N(X)A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bradford-White Corp TG-237I-N(X)A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bradford-White Corp TG-237I-N(X)A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bradford-White Corp TG-237I-N(X)A you will learn all the available features of the product, as well as information on its operation. The information that you get Bradford-White Corp TG-237I-N(X)A will certainly help you make a decision on the purchase.
If you already are a holder of Bradford-White Corp TG-237I-N(X)A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bradford-White Corp TG-237I-N(X)A.
However, one of the most important roles played by the user manual is to help in solving problems with Bradford-White Corp TG-237I-N(X)A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bradford-White Corp TG-237I-N(X)A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
