American Water Heater 318281-000 manual

1 PRINTED IN THE U.S.A 0510 P ART NO. 318281-000 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHEN EVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. ALL TECHNICAL AND W ARRANTY QUESTIONS: SHOULD BE DIRECTED T O THE LOCAL DEALER FROM WHOM THE W A TER HEA TER W AS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE T O THE COMP ANY L[...]

2 All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and how to avoid the risk of injury . The California Safe Drinking W ater and T oxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer , b[...]

3 GENERAL SAFETY[...]

4 Thank Y ou for purchasing this water heating system. Properly installed and maintained, it should give you years of trouble free service. Abbreviations Found In This Instruction Manual: • ANSI - American National Standards Institute • ASME - American Society of Mechanical Engineers • GAMA - Gas Appliance Manufacturers Association • NEC - [...]

5 T ABLE OF CONTENTS SAFE INST ALLA TION, USE AND SERVICE............................................................................................. .................................... 2 Important De fi nitions ..................................................................................................................... .................[...]

6 SYSTEM DIAGRAM/TYPICAL INST ALLA TION Figure 1. INST ALL V ACUUM RELIEF IN COLD W A TER INLET LINE AS REQUIRED BY LOCAL CODES. INST ALL SUIT ABLE MET AL DRAIN P ANS UNDER HEA TERS TO PREVENT DAMAGE DUE TO LEAKAGE. REFER TO W A TER HEA TER LOCA TION, SEE “LOCA TING THE SOLAR W A TER HEA TER” SECTION. INST ALL THERMAL EXP ANSION T ANK OR DEVICE[...]

7 T ABLE 1: Item Component Function 1 Solar collector Absorbs the sun’s heat energy and transfers this to the heat transfer fl uid circulating through the collector 2 Solar storage tank Stores potable water heated by solar generated heat or installed back-up electric resistance element 3 Heat exchanger (Not Shown) T ransfers the heat from the co[...]

8 or external to the building. In cold climates, it is recommended that the discharge pipe be terminated at an adequate drain inside the building. • Shall not have any valve between the relief valve and tank. When installing the temperature-pressure relief valve, use two or three turns of teflon tape or other suitable thread sealer around the thr[...]

9 This solar water heater shall not be connected to any heating systems or component(s) previously used with a non-potable water heating appliance. If this solar water heater is also used for space heating applications, all piping and components connected to the solar water heater shall be suitable for use with potable water . This appliance has be[...]

10 Figure 5 Flexible metal conduit or flexible metallic tubing shall be permitted for grounding if all the following conditions are met: 1. The length in any ground return path does not exceed 6 feet. 2. The circuit conductors contained therein are protected by overcurrent devices rated at 20 amperes or less. 3. The conduit or tubing is terminated [...]

11 TEMPERA TURE SETTINGS L1 L3 L4 T2 T4 L2 T1 THERM-O-DISC RESET 150°F 125°F 90°F RESET (66°C) (52°C) (32°C) HIGH LIMIT CONTROL ADJUST ABLE THERMOST A T WITH HIGH LIMIT Figure 7 T ABLE 2: W ater T emperature °F T ime for 1st Degree Burn (Less Severe Burns) T ime for Perma- nent Burns 2nd & 3rd Degree (Most Severe Burns) 11 0 11 6 11 6 12[...]

12 Make sure the electrical supply to the solar water heater is turned OFF . Failure to heed this will result in the possibility of DEA TH, SERIOUS BODIL Y INJURY OR PROPERTY DAMAGE. 2. Open a nearby hot water faucet until the water is no longer hot, then turn off the cold water supply and open the drain valve, leaving the hot water faucet open. 3.[...]

13 Figure 10 COLLECTOR LOCA TION Proper location and orientation of the solar collectors is important for maximum system ef fi ciency . The collec- tors should be unshaded from 10:00 am through 3:00 pm each day in every month of the year and should be located as close to the storage tank as possible to mini- mize heat loss in the piping runs. The [...]

14 COLLECTOR ORIENT A TION Proper tilt angle for solar collectors is latitude plus 15° This 15° additional tilt improves performance in the winter , when the sun is weaker and at a lower angle. The cost in performance in the summer when the sun is high is overcome by the hours of sunlight and strength of irradiation that occurs in the summer . T [...]

15 All persons working on roofs should have successfully completed a fall-safety course and should be properly equipped with appropriate safety equipment. W ARNIN G After completion of the collector mounting and prior to system charging the collectors must be covered by a blanket of other means to avoid solar radiation from heating the collectors. [...]

16 32” 32” 14” 14” 86” Drill Points (Clearance Hole for 3/8” Bolt) Rafter Mounting Bracket Rafter Figure 15 Figure 16[...]

17 Figure 17 A TT ACHING COLLECTOR TO MOUNTING BRACKETS Once all of the mounting brackets have been secured to the roof insert the channel nut with spring inside the channel. Then fasten the collector mounting clip to the nut with the stainless steel bolt using a fl at washer and lock washer – refer to Figure 17. T o aid in handling the collecto[...]

18 COLLECTOR PIPING The piping of the system should be considered before a fi nal decision is made on how the collectors are mounted. Piping should be made of copper tube of the type meeting local codes, insulated with Armacell UT Sola fl ex or similar . The maximum total piping length allowed in this system is 200 equivalent ft. Use only lead-fr[...]

19 COLLECTOR PIPING DET AIL The outlets of the collector are 1” copper pipe nipples (Figure 19). They should be piped as shown with provisions for an automatic air vent. The air vent must be oriented vertically as this must be the highest point in the system in order for air to escape. This will prevent air lock and subsequent loss of system ef ?[...]

20 PUMP ST A TION The following instructions describe the installation, start- up, function and operation of the solar pump station. The solar pump station may only be used in the collector circuit of a solar thermal intallation. The technical data speci fi ed in these instructions must be observed. Improper usage excludes any liability claims. Th[...]

21 SAFETY EQUIPMENT For protection against excessive pressures in the collector loop a pressure relief valve is integrated into the solar pump station. Drain tubing must be installed in the valve outlet so that any discharge will exit only within 6 inches above, or at any distance below the structural fl oor . Be certain that no contact is made wi[...]

22 FLOW CLOSED Figure 25 Check and set the pressure of the air bladder in the 10. expansion tank to 25 psi. If the pressure is higher bleed pressure out until it is correct. If the pressure is too low add air by use of a compressor or bicycle pump until the pressure is correct. Plumb the solar pump station to the storage tank 1 1. and to the collec[...]

23 FLOWMETER The flowmeter (U) serves to measure and display flow volume of the system in a range of 0.5-3.5 US gpm. It has an integrated restrictor (S) with adjustment valve which allows fine adjustment of the flow volume of the solar installation. In order to guarantee the flawless function of the measuring device the installation must be flushed[...]

24 T urn on the supply water and open the fill valve (P) 14. then leave running for 15 minutes to flush debris out of the solar loop After the 15 minute flush turn off the supply water 15. at the source and allow the system to drain. When water stops flowing out of the discharge hose close the fill valve (P) Close the drain valve (T) on the pump st[...]

25 PUMP ST A TION CONTROL INSTRUCTIONS CONTROL INSTRUCTIONS Prior to operation of the control on the solar pump station the collector and tank temperature sensors must be prop- erly connected. Remove the control cover and connect the sensors to the proper terminals. Figure 32 Figure 33 The temperature sensors should be connected to the following te[...]

26 System Monitoring Display Complete monitoring display The system monitoring display consists of 3 blocks: channel indication, the toolbar , and system screen. Channel indication The channel indication consists of two lines. The upper line is an alphanumeric 16 segment indication in which the channel name or menu item is shown. The lower 7 segmen[...]

27 ST ARTUP / SYSTEM SETTINGS The AC power cord should be plugged in to an appropriate 1 15V outlet. The controller will enter an initialization phase in which the operating control lamp will flash red and green. After the initialization period the controller will be in automatic operation with the default settings active. The pre-adjusted system s[...]

28 DTF: Switch-off temperature dif f. Adjustment range 1.0 to 38.0 °F Default setting 8.0 Recommended setting: 4.0 If the switch-off temperature, DT F , is reached the pump is de-activated. Note: the switch-off temperature must be at least 2 degrees lower than the switch-on temperature. SMX: Maximum tank temperature Adjustment range: 40 to 205 °F[...]

29 OCF: Antifreeze function Adjustment: OFF / ON Default setting: OFF Recommended setting: OFF This function is used to transfer heat from the storage tank to the collector in order to avoid freezing of the heat transfer medium is some system types. This system uses a solution of propylene glycol and water and is freeze resistant to -30 °F; theref[...]

30 MED%: Concentration of antifreeze by volume % Adjustment range: 20 to 70% Default setting: 45 Recommended setting: 50 The antifreeze concentration by % volume should be entered in this channel for OHQM to give an accurate reading. Standard system concentration should be a 50% propylene glycol and 50% distilled or de-mineralized water . Channel o[...]

31 TROUBLESHOOTING PROBLEM CHECK THIS POSSIBLE CAUSE CORRECTIVE ACTION No hot water Storage water heater No power to auxiliary back-up heating element Check high temperature protection and push reset button on the heater thermostat. (Use caution when dealing with electricity .) Storage water heater thermostat Thermostat defective Replace Thermostat[...]

32 PROBLEM CHECK THIS POSSIBLE CAUSE CORRECTIVE ACTION Not enough hot water (cont.) Differential Controller Improper wiring or loose connections) Compare with system schematic. Check for proper connections. Seal all splices against moisture Isolation valves Closed Open Thermostatic mixing valve Improper adjustment Check water temperature at house f[...]

33 PROBLEM CHECK THIS POSSIBLE CAUSE CORRECTIVE ACTION Pump does not start Electrical power supply Controller plug disconnected Reconnect control plug to power outlet Blown fuse or breaker tripped on overload Determine cause and replace fuse or reset breaker Pump Motor failure Replace pump Sensors Defective sensors, sensor error Check wiring contin[...]

34 SYSTEM MAINTENANCE HEA T TRANSFER FLUID (HTF) QUALITY The chemical composition of the HTF may change over time. The HTF quality should be monitored on a periodic basis – at least annually . After summer and before any chance of the first freeze is an ideal time. A drop in ph can indicate the system has been stagnating frequently . The cause sh[...]

35 REP AIR P ARTS REP AIR P ARTS SCHEDULE ORDERING REP AIR P ARTS The following parts may be ordered through the store or dealer from whom you purchased the solar water heater , or direct from the factory listed on the model & rating plate located on the lower front of the solar water heater and by phone at 1-800-433-2545. Selling prices will b[...]

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