008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP Zoom

008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

SKU:008-VDTF6

Brand: Taco

Taco
Qty Price
$169.95
/ each
$329.70 / box (2 units x $164.85)
In Stock! Ships in 24-48 Hours
(17 Available)
3

Resources

Specs

Application: Heating
Type: Variable Speed Pump
Material: Cast Iron
Horse Power:
?
1/25
Voltage:
?
115v
Phase: 1
Hertz: 60
Amperage:
?
0.79
Flow Range (GPM): 0-15
Max Flow (GPM): 15
Max Head (Ft): 15
Head Range (ft.): 0-15
RPM: Variable
Max Pressure (PSI): 125 psi
Connection Type: Flanged
Connection Size: 3/4"
1"
1-1/4"
1-1/2"
Warranty: 3-Year Warranty

Description for Taco 008-VDTF6

Note: Full flange-to-flange three-year warranty on all 00 Series circulators.

Taco Variable Speed Delta-T Circulator's all-in-one design combines a microprocessor based variable speed differential controller with the reliability and convenience of our 00® Cartridge Circulators. Simply dial in the design Delta-T of the system or zone (from 5 - 50°F) and then sit back and watch the circulator automatically adjust its performance to match the systems ideal BTU/hr output, while conserving energy and eliminating velocity noise.

No matter how good your original system design and heat loss calculations were, they included estimates and rules of thumb. What are the design conditions for those systems you "inherited" or have to service? Have a zone valve system or multi-zone radiant manifolds running off a common circulator? Your system needs a circulator that automatically adjusts to deliver the optimal heat transfer based on the actual operation of the system, every day, under all load conditions - even when those conditions change. With the Taco Variable Speed Delta-T 00® Circulators you simply dial in your desired temperature drop across the system or zone (5-50°F), attach a supply and return sensor directly to the pump and it will automatically vary its performance to deliver optimal heat, efficiency and comfort.

Features:

  • All-in-One Pump & Control
  • Sensors Included
  • Easy to Install: attach 2 Sensors, dial in the Desired Delta-T
  • UL Approved
  • Snap-in PC Board, replaceable
  • LED Status Panel
  • Fuse Protected
  • Plug-in Low Voltage Wiring Terminal
  • Optional Integral Flow Check (IFC®)
  • Increases System Efficiency
  • Pump Always Runs at Minimum Required Speed
  • Eliminates Velocity Noise
  • Eliminates Need for a Pressure By-pass Valve
  • Conserves Energy
  • Achieves System Design Goals, even when Installed System Varies from Original Design
  • Pump Automatically Adjusts to Current System Conditions
  • Spend Less Time Figuring Out Pressure Drop (for proper pump sizing) when Servicing Existing Systems.
  • Pump Exercise
  • Delivers Ideal BTU/hr Heat Transfer for All Styles of Emitters


Replacement Parts List:
Casing O-Ring: 008-005RP
Flange Gasket Set: 007-007RP
Cartridge Assembly Complete: 008-044RP

008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

REVIEW SNAPSHOT®

by PowerReviews
Taco008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP
 
4.7

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 3 customers

Sort by

Displaying reviews 1-3

Back to top

 
4.0

Great for heated floor

By Cold Engineer

from Columbus, IN

Verified Buyer

Comments about 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP:

This is the perfect setup for my heated floor system. Having the built-in delta T sensors and controls means I only need to give this power and I'm good to go.

 
5.0

EFFECIENT!

By JM

from Markleysburg, Pa

Verified Buyer

Comments about 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP:

The only pump to use in heated floors!

Stop using mixing valves.

Absolutely the best pump for use with geothermal systems.

(1 of 1 customers found this review helpful)

 
5.0

Taco 008 Delta T variable speed pump

By jaybird396

from SE Mass

Comments about 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP:

I have a 4 zone baseboard hydronic system with one circulator. When I replaced my old boiler with a modern triple pass low mass Biasi boiler I decided to use this pump to help keep cold return temperatures from harming the boiler and to modulate flow when different zones are calling according to the delta T of the system. It has been installed for several months, and seems to be working great. I set the Delta T at 20 degrees F and it seems to be happy there. I read other reviews elsewhere that complained about strange noises from the pump and water velocity noise but I have not experienced any of this. The house heats evenly and quietly.

Displaying reviews 1-3

Back to top

Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

4 Questions | 5 Answers
Displaying questions 1-4
  • 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

    Q:

    Boiler: Peerless Purefire 110
    Heating zones:3
    DHW: Turbomax 33
    Total Baseboard: 130 feet

    I need one pump for each zone, one for DHW, and one for the boiler: What pumps do I need to handle this? 4 taco 007 and 1 008?
    Asked on 10/18/2011 by Zeke from East rutherford, nj

    1 answer

    • CUSTOMER CARE

      A:

      That will be based on gpm and head pressure for each zone.

      Answered on 11/16/2011 by PexSupply Staff from NY
  • 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

    Q:

    I have a five zone system, where three zones, on the first floor, are radiant heat using 1/2" pex tubing. The two remaining zones are 3/4" copper fin tube baseboard heat. These last two zones are located on the second floor of my home. There are never more than three zones operating at any one time. The Weil McLain Ultra High Efficiency boiler is located in the basement. At present, we have a Taco 008 single speed circulator. We are experiencing velocity noise. WILL THIS PUMP HANDLE OUR SYSTEM? I would calculate the head at 12 feet maximum, from the pump location to the uppermost fin tube radiation.
    Asked on 3/3/2011 by Dan from Pennsylvania

    2 answers

    • CUSTOMER CARE

      A:

      This pump should be the right choice, as long as it meets you GPM and head pressure requirements.

      Answered on 3/4/2011 by PexSupply Staff from NY
    • A:

      My guess is that the VDT-008 will "handle your system". The single speed 008 has more than enough speed to handle your system since you are getting velocity noise, so I assume the variable speed version has the same capacity at its high speed. But please see my review of this pump. Mine makes a rather loud electrical hum noise whenever it is running at a speed below full speed. We can hear this hum throughout the house and it is not acceptable. I am trying to find out whether I have a bad unit, or whether they all make this noise. I found one other reference to this noise on the internet. The alternatives which are said to be silent are the Grundfos Alpha and Wilo Stratos which are both variable speed delta P circulators. They use delta P rather than delta T as their control strategy, but I don't think there will be a huge difference in the overall electrical and heating efficiency. They are similar cost as the Taco.

      Answered on 10/27/2011 by Greenman from Massachusetts
  • 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

    Q:

    I currently have a five zone system. The first floor zones are radiant heat with 1/2" PEX tubing. The second floor has the two remaining zones, which are 3/4" copper fin tube baseboard convectors. At any one time, no more than two zones are operating. My boiler is a Weil McLain Ultra high efficiency model. The present Taco pump is a 008 single speed model which, when operating, causes noise in the system. I am told that this is velocity noise. Would this model be the best choice to reduce noise?
    Asked on 3/1/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      Yes, this pump will help minimize noise and make your system run more efficiently.

      Answered on 3/4/2011 by PexSupply Staff from NY
  • 008 Variable Speed Delta-T Cast Iron Circulator Pump, 1/25 HP

    Q:

    I am making changes to my existing zone valve system to add a low temp system (currently 6 zones). my current pump is a 3 speed circulator (Astro30). My longest run calculates to approx 10.4ft of head. Would a variable speed pump be a good option and given the head, would the 008 be a better option than the 007 or 010? my max flow target flow is 10.3gpm
    Asked on 2/6/2011 by steve from mpls,mn

    1 answer

    • CUSTOMER CARE

      A:

      This circulator will not deliver 10.3 GPM at 10.4 ft of head. You would need to look at the Taco 0014-VDTF1.

      Answered on 2/9/2011 by PexSupply Staff from NY
Displaying questions 1-4

Do you have a question about this product?