CI2 Application Guide Highlights

 

When hooking up ECM pumps to these boilers, it is suggested that you use an isolation relay on the boiler contacts to enable pump. This way the pumps computer is powered on at all time. 

 

See full guide for piping suggestions. 

 

 

 

 

 

 

 

Pump Sizing:

 

Primary/Secondary Pump Sizing Recommendation

Bitmap Bitmap CI2 Pump Selection- Boiler Pumps for Primary / Secondary only

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Pump Selection Criteria ●        ECM pumps are listed due to the ability to accept a 0-10 Vdc signal ●        Flow rate based on a 20 °F ΔT ●        Selection based on Steel Pipe ○        70 linear ft. ○        Max Velocity of 8 ft/s ○        Max Head loss of 4 ft/ 100ft ●        Pipe fitting factor of 1.5 ●        Pipe size auto selected

Boiler Model

Conditions

Taco Pump

Grundfos Pump (Magna 3)

CI2-399

39 gpm @ 12 ft

VR 15 L or 0034e*

Magna3 32-100 F

CI2-500

48 gpm @ 13 ft

VR15L

Magna3 40-80F

CI2 750

73 GPM @ 13.5 ft

VR20 M

Magna3 40-120

CI2-1000

97 GPM @ 11 ft

VR25L

Magna3 50-120

CI2 1500

146 GPM @ 10 ft

VR25H

Magna3 65-120

CI2-2000

194 GPM @ 13 ft

VR25H

Magna3 65-150

*Note: 33 gpm @12 ft for a 0034e Taco Pump

 

 

Gas Regulator Recommendation:

 

Gas Regulator Recommendation

Pieto Fiorentini Regulators

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Vented Regulators:

Boiler Model

Gas Pressure

Model

Outlet

Orifice

Spring

CI2-399

2 psig

B42R

1-1/4

1/2x9/16"

Dk Gr (31)

5 psig

B42R

1-1/4

1/2x9/16"

Dk Gr (31)

CI2-500

2 psig

B31R

1-1/4

1/2"

Lt Grn

5 psig

B42R

1-1/4

1/2x9/16"

Dk Gr (31)

CI2 750

2 psig

B34SR

1-1/2

7/8" x 1"

Blk

5 psig

B31R

1-1/4

1/2"

Lt Grn

CI2-1000

2 psig

B34SR

1-1/2

7/8" x 1"

Blk

5 psig

B31R

1-1/4

1/2"

Lt Grn

CI2- 1500

2 psig

B34SR

2

7/8" x 1"

Blk

5 psig

B34SR

2

7/8" x 1"

Blk

CI2-2000

2 psig

B34R

2

7/8" x 1"

Blk

5 psig

B34SR

2

7/8" x 1"

Blk

Note:  Regulators  are  to  be  installed  with  10  linear  ft  of  gas  piping  between  the  regulator  and  boiler. Additionally,  the  gas  pipe  size  between  the  regulator  and  the  boiler  is  to  be  the  size  of  the  boiler  gas connection.

 

Typical Wiring Diagram:

 

 

PLUG 96: 5-6 - Dry Contact Enable

PLUG 1: 1-2  - Outdoor Air Sensor

 

All 120V Outputs are rated at 2A Max.