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5

   Delta T of Secondary Loop

467,500

382,500

297,500

212,500

127,500

85,000

10

488,750

403,750

318,750

233,750

148,750

106,250

15

510,000

425,000

340,000

255,000

170,000

127,500

20

100

80
60
40
20
10

Primary Loop

Temperature

minus

Secondary Loop

Temperature

Maximum

Injection

BTUs

Inj ection Piping Size 3/4"
Globe Valv e Opening100%

Typical

Pump Models:

Taco 007
Grundfoss 15-42
B&G NRF22

   Delta T of Secondary Loop

715,000

585,000
455,000

325,000

195,000

130,000

10

747,500

617,500
487,500

357,500

227,500

162,500

15

780,000

650,000
520,000

390,000

260,000

195,000

20

100

80
60
40
20
10

Primary Loop

Temperature

minus

Secondary Loop

Temperature

Maximum

Injection

BTUs

Inj ection Piping Size 1"
Globe Valv e Opening100%

Typical

Pump Models:

Taco 007
Grundfoss 15-42
B&G NRF22

   Delta T of Secondary Loop

1,155,000

945,000

735,000

525,000

315,000

210,000

10

1,207,500

997,500

787,500

577,500

367,500

262,500

15

1,260,000

1,050,000

840,000

630,000

420,000

315,000

20

100

80
60
40
20
10

Primary Loop

Temperature

minus

Secondary Loop

Temperature

Maximum

Injection

BTUs

Inj ection Piping Size 1 1/4"
Globe Valv e Opening100%

Typical

Pump Models:

Taco 0010
Grundfoss 26-64

   Delta T of Secondary Loop

1,760,000

1,440,000

1,120,000

800,000

480,000

320,000

10

1,840,000

1,520,000

1,200,000

880,000

560,000

400,000

15

1,920,000

1,600,000

1,280,000

960,000

640,000

480,000

20

100

80
60
40
20
10

Primary Loop

Temperature

minus

Secondary Loop

Temperature

Maximum

Injection

BTUs

Inj ection Piping Size 1 1/2"
Globe Valv e Opening100%

Typical

Pump Models:

Taco 0012
Grundfoss 43-75

   Delta T of Secondary Loop

2,310,000
1,890,000

1,470,000

1,050,000

630,000

420,000

10

2,415,000
1,995,000

1,575,000

1,155,000

735,000

525,000

15

2,520,000
2,100,000

1,680,000

1,260,000

840,000

630,000

20

100

80
60
40
20
10

Primary Loop

Temperature

minus

Secondary Loop

Temperature

Maximum

Injection

BTUs

Inj ection Piping Size 2"
Globe Valv e Opening100%

Typical

Pump Models:

Taco 0012
Grundfoss 43-75

CAUTION: 

 Sizing Charts are based on Industry S tandards.  Values are approximations only.  Actual

piping arrangements may affect outputs.  The correct pipe and pump sizes for any application should
be performed by a qualified engineer or contractor.

Summary of Contents for VSP

Page 1: ...then automatically regulated based on outdoor temperature The outdoor reset function maintains constant and comfortable ambient building temperatures in all weather conditions The VSP can also be used...

Page 2: ...re than 500 from the VSP controller Both wells are 3 8 ID The wells are designed to be installed in a tee with a 3 4 bull Solder the well into the bull of the tee as shown Slide the sensor into the we...

Page 3: ...nd Secondary loops Pipe Sizing The Injection piping diameter must be at least one pipe size smaller than the smaller of the Primary or Secondary loop piping See Sizing Charts on pages 4 and 5 Primary...

Page 4: ...ve 20 the intersection of the row marked40 Primary Secondary loop temp and the column marked 10 Delta T provides 50 000as the maximum amount of BTUs This is too low Move on to the next chart Checking...

Page 5: ...ature minus Secondary Loop Temperature Maximum Injection BTUs Injection Piping Size 1 1 4 Globe Valve Opening 100 Typical Pump Models Taco 0010 Grundfoss 26 64 Delta T of Secondary Loop 1 760 000 1 44...

Page 6: ...LINE NEU BLUE Pump Motor RED Pump Starter Motor BLACK Must be connected directly to 120VAC motor NO PUMP STARTER Wire Sensor Shields to either COM Screw Outdoor Sensor Setback or Remote Enable If Pump...

Page 7: ...sensor wires have been extended connect the shield to a COM terminal The two wires from the Secondary loop sensor must be connected to the VSP front screws marked SEC and COM The two wires from the O...

Page 8: ...ar application they will be retained in memory and will not need to be reset Note that if you do change an operating mode you will need to reset all other settings An operating mode can only be change...

Page 9: ...Offset OFF value is added or subtracted to the calculated water temperature for the Secondary loop It effec tively moves the starting point of the reset curves up and down by the number of degrees se...

Page 10: ...er manufacturer s specification for minimum boiler return temperature 7 times Reset Operation ONLY This is the highest Secondary loop water temperature the VSP will maintain IMPORTANT The VSP is not a...

Page 11: ...put RED wires will be off The SystemStartis adjustable from 30 F to 70 F TheSystem Start also has two special modes OFF When the System Startis set to OFF neither the Secondary loop pump nor the Injec...

Page 12: ...e Reset Ratio curves see side charts When the OFFset is changed that change is always directly added or subtracted to the calculated water temperature For instance if the calculated Secondary loop wat...

Page 13: ...The High Supply should never be set higher than the maximum value specified by either the Secondary loop component or the flooring manufacturer Adjust the High Supply as shown on the chart pg 10 SET...

Page 14: ...This test should only be performed by a qualified electrician or electrical contractor Place the leads of the voltmeter across the power inputs of the Injection pump At the highest speed the AC Volt...

Page 15: ...OPEN or a resistance greater than 100 000 Check the wires going to the sensor They may have been broken or become discon nected If the wires are fine check the resistance at the sensor itself If the v...

Page 16: ...Sequencing controls Radiant heat controls Digital set point controls Precision tempering valves VARIVALVE air vents 2 3 and 4 way motorized valves Snow melt controls Heat Timer Corporation 20 New Dutc...

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