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9/19/2015 1 Variable Speed Lowdown
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TYPICAL EUROPEAN SYSTEM TRV’s, No T-stats Pump runs 24/7 (6k hrs) TRV’s modulate
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TYPICAL US SYSTEM Series loop, fin-tube baseboard CI bb/radiators/convectors Radiant floor heating Mutliple zones, circs or ZV’s Approx 2,100 – 2,500 hrs of operation
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WHY USE A VARIABLE SPEED CIRCULATOR? Good question… Best applications… Zone valve or RFH Zone pump? Electrical savings?
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5 007’s @ 80W each = 400 Watts 400 Watts ÷ 1000 = 0.4 kW ELECTRICAL SAVINGS????
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9/19/2015 TACO – EMERSON SWAN MEETING 6
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5 007’s @ 80W each = 400 Watts 400 Watts ÷ 1000 = 0.4 kW 0.4 kW × 2,500 “on” hrs = 1,000 kWh 1,000 kWh × 15¢/kWh = $150.00/yr ELECTRICAL SAVINGS????
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1 007 (80W) + 5 Zone Sentry zone valve (1.44W each)= 87.2 Watts 87.2 Watts ÷ 1000 = 0.0872 kW 0.0872 kW × 2,500 “on” hrs = 218 kWh 218 kWh × 15¢/kWh = $32.25/yr WITH ZONE VALVES…
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1 Pump (20W) + 5 Zone Sentries (1.44W each)= 27.2 Watts 27.2 Watts ÷ 1000 = 0.0272 kW 0.0272 kW × 2,500 “on” hrs = 68 kWh 68 kWh × 15¢/kWh = $10.20/yr WITH SUPER DUPER ECM…
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5 ZONE SYSTEM 70,000 BTUH 7 GPM @ 5’ head Where does system really work?
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GPM = BTUH T = BTUH T = 70,000 < 14.5 0 T × 500 GPM 500 9.5 500 NUMBERS DON’T LIE…
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1 ZONE CALLING 10,000 BTUH 1 GPM @ 5’ head Where does it really work?
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GPM = BTUH T = BTUH T = 10,000 10 0 T × 500 GPM 500 2 NUMBERS STILL DON’T LIE…
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The Result? And when it’s 35 0 out?
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SO WHAT ABOUT THE VR 1816? 9/19/2015 15
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SO, PROGRAMMING THE VR 1816???? 9/19/2015 20
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KEEP IT SIMPLE… CP Settings – zone pump: 85’ total length = CP I (5’ hd) 165’ total length = CP II (10’ hd) 250’ total length = CP III (15’ hd) Based on ML × 1.5 ×.04 9/19/2015 TACO – EMERSON SWAN MEETING 21
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STEPLESS/INFINITE ADJUST Min = 003 Low = 006 Med = 007/0015 Low High = 008/0015 Med Max = 0015 Hi Or for guys who actually calculate flow & head… 9/19/2015 TACO – EMERSON SWAN MEETING 23
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