Steam Information

Phone (717) 545-4067 Fax 610-340-2354 Two Pipe Steam Main Capacity in EDR (Sq Ft)

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Steam Risers Two Pipe EDR

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CONDENSATE RETURN MAINS (Horizontal, Pitched)
2 Pipe Steam

CONDENSATE RETURN RISERS (Vertical)

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One Pipe Steam Main Capacity in EDR (Sq Ft)

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1 Pipe Steam Riser

Notes:
(A) Horizontal travel beyond 10' increase one size
(B) Horizontal travel sloped down and dripped decrease one size Click Back Button to Return
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1 Pipe Return Capacity EDR

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Calculation should not exceed 50 - 60 ft a second Click Back Button to Return
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Sizing Radiation for Steam Boilers
Column Type Radiator	Cabinet Convector CI Element	Radiant Radiator (Sunrad)
Tube Type Radiator	Cabinet Convector Copper Element	Direct Pipe Coils
Wall Radiator	Cast Iron Basboard	Riser Radiators

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Cast Iron Baseboard

3.4sq ft per lineal ft. Click the Back Button to return Radiant Radiator

Width	Height	SQ FT per Section
5"	20"	2.25
7.5"	20"	3.40

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Direct Pipe Coils

Based on horizontal pipes per lineal ft of coil

Not per pipe

Size of Pipe

1"

1-1/4"

1-1/2"

Single Row

.55

.675

.77

Two Row

1.05

1.30

1.45

Four Row

1.83

2.27

2.57

Six Row

2.36

2.93

3.30

Eight Row

2.70

3.32

3.78

Ten Row

3.05

3.78

4.25

Twelve Row

3.38

4.19

4.73

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Riser Radiators

When a riser is used for heating a small room

Riser Size

Sq Ft per Linear Ft

1-1/4"

.63

1-1/2"

.73

2"

.88

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Size of Pipe	1"	1-1/4"	1-1/2"
Single Row	.55	.675	.77
Two Row	1.05	1.30	1.45
Four Row	1.83	2.27	2.57
Six Row	2.36	2.93	3.30
Eight Row	2.70	3.32	3.78
Ten Row	3.05	3.78	4.25
Twelve Row	3.38	4.19	4.73

Riser Size	Sq Ft per Linear Ft
1-1/4"	.63
1-1/2"	.73
2"	.88