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Lochinvar SPS0250 - page 1
Solar Pump Station Installation and Operation Manual SPS0250, SPS0500 & SPS1000 This manual must only be used by a qualified heating installer/ service technician. Read all instructions, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. WARNI ...
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Lochinvar SPS0250 - page 2
2 Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product. DANGER WARNING CAUTION CAUTION NOTICE DANGER indicates an imminently hazardous situation which, if not avoided, will result ...
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Lochinvar SPS0250 - page 3
3 1 General Information Before starting work, the Installer must read, understand and note these installation and operating instructions. WARNING The solar pump station may only be installed and maintained by trained professionals. Trainees may only work on the product under the supervision of an experienced person. WARNING All instructions ...
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Lochinvar SPS0250 - page 4
4 Included Components Solar Station: ■ Grundfos solar circulation pump ■ VFS sensor (flow sensor) ■ 145 psi relief valve, with pressure gauge ■ Multi-function instruments (Flow Check, Thermometer, Fill Valve) ■ EPP two-part bracket with mounting kit Installation kit: ■ Wall and tank bracket with mounting kit 1 General Information Solar ...
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Lochinvar SPS0250 - page 5
5 2 Installing the solar station Installing the solar station on a wall ■ Remove front insulation shell. ■ The solar pump station forms a single unit with the wall bracket and rear insulation shell. Secure both components as a complete unit at the intended location, working the front and using anchors and screws suitable for the wall constructi ...
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Lochinvar SPS0250 - page 6
6 3 Technology, installation and commissioning Clamp ring screw connections ■ Cut the copper pipe to length and deburr. ■ First, slide the clamp ring nut over the pipe, then slide the clamp ring. ■ Insert the prepared pipe into the screw connection until its stop is reached. ■ Tighten clamp ring nut by hand. ■ Use open-ended wrench to tig ...
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Lochinvar SPS0250 - page 7
7 4 Commissioning the solar system General ■ Before commissioning, all piping, connections and saftey equipment should be checked to ensure that they are correctly installed. ■ All pre-fitted solar station screw connections are firmly tightened in the factory so that they do not usually need retightening. ■ Seal integrity must be tested when ...
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Lochinvar SPS0250 - page 8
Solar group with Grundfos UPS 25-58U pump (and GF sensor 0.5-3 GPM) residual delivery height 0 5 10 15 20 25 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 V olumetric flow rate [GPM] Residual delivery height [Ft] Max. residual delivery height pressure drop of components Solar group with Grundfos UPS 25-99U pump (and GF-Sensor 0.5-10.5 GPM) residual delivery ...
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Lochinvar SPS0250 - page 9
9 6 VFS flow sensor Figure 6-1 VFS 1-12 flow ouput signal VFS 1-12 output signal ow Assignment of m easurement range: 0.26-3.17 gpm i s eq ual to 0.5-3.5V Flow rate calculation: Q = 0.26gpm + [(U-0.5)V/3V]*2 .91gpm Figure 6-3 VFS 2-40 flow output signal VFS 2-40 output signal ow Assignment of m easurement range: 0.53-10.6gpm is eq ual to 0.5- ...
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Lochinvar SPS0250 - page 10
10 7 Technical data for solar station Designation SPS0250 / SPS0500 SPS1000 PUMP SPS0250: Grundfos UPS 25 - 58 U SPS1000: Grundfos U P 2 5 - 120 U SPS0500: Grundfos UPS 25 - 99 U SOLAR AND TANK CONNECTIONS 3/4" compression 1" compression EXPANSION TANK CONNECTION 1/2" NPT INSTALLATION OPTIONS Wall mounting HOLDING PLATE FOR WALL MOUN ...
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Lochinvar SPS0250 - page 11
11 7 Technical data for solar station (continued) Designation SPS0250 / SPS0500 SPS1000 GRAVITY BRAKES Installation location: forward flow and return ball valves Material: Brass Seal: O-ring 70 EPDM 291 Opening pressure: 2 x 200 mm WS (using metal spring) Can be positioned by moving thermometer handle to 45 ° F position Max temp 356 ° F SOLAR DIA ...
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Lochinvar SPS0250 - page 12
8 Component breakdown 20 3 2 4+5 12+15 25 8+9 22 14 11 23 16 13 26 30 27 24 4 6 17 19 1 10 18 7+9 21 SPS0250/ SPS0500 Item Name – SPS0250 - Pumpstation 250 sq-ft w/ flow sensor and CU – SPS0500 - Pumpstation 500 sq-ft w/ flow sensor and CU 1 Solar return ball valve USA 1 1/2" x M28 x 1.5 2 Solar forw. flow ball valve USA M28 x 1.5M28 3 Sol ...
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Lochinvar SPS0250 - page 13
2 27 4+5 3 19 30 31 11 6+7 9 13 21 4 12 29 17 20+22 10 24 1 18 23 32 8 25 16 26 28 33 34 35 Figure 9-2 SPS1000 8 Component breakdown (continued) 13 SPS1000 Item Name – Pumpstation 1000 sq-ft w/ flow sensor and CU 1 Solar return ball valve 1 1/2" Fl. x M36 x 1.5 incl. CV 2 Solar forw. flow ball valve M28 x 1.5 x M36 x 1.5 incl. CV 3 Solar ble ...
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Lochinvar SPS0250 - page 14
14 9 Service De-energize and lock the solar control and pump to prevent them from accidentally being switched back on again by mistake before any maintenance or repair work. Service is not permitted until components and solar liquid have cooled. WARNING ■ The solar station features an air separator. Open bleeder valve until the solar liquid e ...
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Lochinvar SPS0250 - page 15
15 10 Faults, causes and rectification Pump doesn’t run when power is switched on : ■ Check solar control unit for correct settings and tight wire connections. ■ Check fuses. ■ Check pump voltage, refer to the pump rating plate for requirements. ■ Close shut-off instruments upstream and downstream of pump at high liquid temperatures and s ...
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Lochinvar SPS0250 - page 16
Revision Notes: Revision A (ECO C06520) initial release. Revision B (ECO C07610) reflects formatting adjustments. SL-PS-I-O Rev B 3/11 ...
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