Utica Boilers SSV Installationsanweisungen

(This boiler must be piped with a primary loop)

These charts are valid for piping diagrams on pages 17 & 18
Instructions:

Pipe diameter determines pump size. Smaller the diameter of pipe, larger the pump. 50/75/100 Mbh boilers can be 

piped in 3/4" , 1" or 1¼" pipe. Use charts 1-4 to determine pipe size and respective pump size.

Fill in chart using the 3/4" section first. Then consult chart 4 for pump selection. 

Pump size may be decreased by decreasing equivalent length of pipe. Use larger diameter pipe as primary loop to 

decrease equivalent length. Use chart 2 or 3.

Note: The figures below are based on industry average. Consult valve/fitting manufaturer for exact equivalent length or 

for fittings not shown below.

3/4"

90° Elbow

1.875

45° Elbow

1

Tee-branch

3.75

Tee-through

1.25

Swing check valve

6.25

Lift check valve

37.5

Enter Total 3/4" straight pipe length in feet

Add  up  numbers  in  column  C                               

Total equivalent length of Primary

Pump Factor

1"

90° Elbow

1.875

45° Elbow

1

Tee-branch

3.75

Tee-through

1.25

Swing check valve

6.25

Lift check valve

37.5

Enter Total 1" straight pipe length in feet

Add  up  numbers  in  column  C                               

Total equivalent length of Primary

Multiply Total of Column C in Chart 2 by 0.26

Pump Factor