Apricus Solar Water Heating System Installation and Operation ...

More documents

Recommendations

Info

Apricus Solar Collector Installation & Operation Manual - USA7.7. Pump Operationa) Fixed Speed Operation: The Apricus closedloop pump station is supplied standard with a 3speed Grundfos pump. The speed used willdepend on the system head (line pressure losses).See pump specification sheet in Appendix 8.i) Measuring Flow Rate: By utilizing the flowmeter above the pump the flow can bemonitored and the pump speed adjustedaccordingly. The system flow rate can befurther adjusted by turning the flow restrictorscrew (5/32” or 4mm Allen) on the flow meter.ii) Nominal Flow Rate: The recommendednominal flow rate for Apricus evacuated tubesolar collectors is 0.026 G/tube/minute or 0.1L/tube/minute. Refer to section 3.5.b) Variable Speed Operation (recommended): The Apricus Controller allows for variable speed control ofthe 3 speed Grundfos pump. Refer to section 6.4 for programming details.i) Flow Rate: When using variable speed control, the pump should always be set to Speed 3 unlessthis achieves an excessive flow rate. The full speed flow rate should be no more than 1.3 gpm / 5 lpmper 30 tube collector. The restrictor screw on the flow meter can be used to adjust the flow rate slightly.If both full and minimum flow rates are more than 50% faster than the recommended levels, reducingto pump Speed 2 may be required.ii) Speed Setting: Initially, set the “Min rev pump” value to 50%, then manually test the pump operation(Operation Menu) at this level and monitor the flow rate. The flow rate at the slowest pump operationlevel should be around 40-50% of the full flow rate. Adjust the “Min rev pump” until a suitable flow rateis achieved. 30% is the minimum possible setting.ii) Operation: The pump will operate between the dTMax and dTMin temperature range, switching onat 100% when dTMax is reached and reaching minimum pump speed at dTMin. If dTMin is under-run,the pump will switch off. If the “Min rev pump” setting does not achieve a slow enough speed, reducingthe dTMin down to 2-3° F will help to prevent the pump cycling on and off throughout the day.c) Check Valve: All Apricus pump stations are manufactured with the pump check valve installed.7.8. Expansion Tanka) Expansion Tank Purpose: The expansion tank is used to accept expansion of the heat transfer fluid asit heats, preventing a pressure increase and subsequent dumping from the pressure relief valve. For astandard domestic installation using an Apricus pump station, the 4.7 gallon expansion tank provided is asuitable capacity.b) Pressure Setting: The expansion tank is already pre-charged to 12 psi, but should be raised to thesame pressure as the system. It is recommended that the closed loop systems be operated at 40 psi. Thispressure setting MUST be lower than the operating pressure of the main’s pressure.c) Pressure Testing: The integrated check valve on the side of the pump station is opened when thethreaded Onix fitting is connected. System pressure tests (with air or water) should be performed beforeattaching expansion tank.d) Mounting: The expansion tank is supported using the L-shaped mounting bracket. The L-bracket ismounted to the wall with the hardware provided in the expansion tank mounting kit.Step 1. Mark and drill two (2) pilot holes using the mounting bracket as the guide.Step 2. Insert the plastic hollow wall anchors into the holes, if building structural members are notavailable.Step 3. Using a Phillips head screwdriver and the appropriate screws and washers secure the pumpstation to the wall.Copyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 66 of 126
Apricus Solar Collector Installation & Operation Manual - USAe) Connection: The expansion tank connection is located on the lower, lefthand side of the pump station.The expansion tank should be connected to the pump station using the Onix pipe provided. The use ofTeflon tape on the threaded fittings is recommended.Step 1. Cut the Onix tubing to desired length with a sharp blade.Step 2. Thread the female adapter to the expansion tank.Step 3. Slip ring clamp onto the Onix tubing. Press barbed end of adapter into the Onix tubing (a littlewater on the barbs will help). Place ring clamp over center of barbs and release.Step 4. Thread the male adapter into the pump station. Tighten the expansion tank fitting with twowrenches taking special care not to stress the expansion tank support pipe.Step 5. Slip ring clamp onto the Onix tubing. Press barbed end of adapter into the Onix tubing (a littlewater on the barbs will help). Place ring clamp over center of barbs and tighten.NOTICEOnly make final expansion tank connection (Step 5) after system pressure test is completeand test pressure is released from the system.Expansion vessel may only be installed with pipe connection on top. Horizontal or invertedorientations are not acceptable.7.9. Fill and Pressurizea) Heat Transfer Fluid: The Apricus pump station is designed for closed loop configuration using a freezeresistance heat transfer fluid. Refer to Section 3.31 and Appendices 11-18 for information.Before commencing installation make a rough calculation of the volume of heat transfer fluid that will berequired, and what size buckets will be needed during the fill process.Each 1 foot of "” pipe = 0.025 GallonsEach 1 foot of #” pipe = 0.012 GallonsEach AP-30 solar collector = 0.19 GallonsExample: Installation of 50 foot of !” pipe and one AP-30 = 1.44 GallonsIn addition, you will need to consider the volume of the coil heat exchanger, if present. The coil volume isnormally provided by the tank manufacturer on the tank specification sheet.b) Charging Equipment: Apricus recommends using a professional charging station in order to streamlinethe process considerably.c) Follow this process to fill and pressurize the system:Step 1. Connect hoses (garden hose fittings) to fill (bottom) and drain (top) ports on pump.Step 2. Open the valves on both the drain and fill ports and turn the isolation valve between the fill/drain ports to the closed position (horizontal). Open the auto air vents on the highest point of theCopyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 67 of 126
Page 1 and 2:
Apricus Solar Water Heating SystemI
Page 3 and 4:
Apricus Solar Collector Installatio
Page 5 and 6:
Page 8 and 9:
11/20056408 PCT Gazette - Section I
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 17 and 18: Apricus Solar Collector Installatio
Page 37 and 38: 3.27. Building ConsiderationsApricu
Page 39 and 40: 3.32. Heat Transfer FluidsApricus S
Page 57 and 58: suitably protected.Apricus Solar Co
Page 61 and 62: 6.7. Controller Display & Operation
Page 63 and 64: 7.2. Closed Loop Pump Station Techn
Page 65: Apricus Solar Collector Installatio
Page 69 and 70: ) DRAINING COLLECTOR LOOP:Apricus S
Page 71 and 72: () ()( ' ++++++++++(.(' +*(. +*/ )
Page 79 and 80: ()('++++++++++++(.()('+*(.+*/)+*/1+
Page 97 and 98: Head(ft.)Apricus Solar Collector In
Page 99 and 100: TM03 8530 1907TM03 5534 3806Apricus
Page 117 and 118:
Page 119 and 120:
*Apricus Solar Collector Installati
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
show all

Apricus Solar Water Heating System Installation and Operation ...

Create successful ePaper yourself

Delete template?

Save as template?