Burnham BASE-RAY 81441001R8-3/06 User Manual download pdf (Page 5)

BASE-RAY

HYDRONICS

Types of Systems

Hydronic Heating Systems are classi¿ ed according to the pip-

ing arrangement and heating medium employed. BASE-RAY

is very versatile in that it may be used in almost all types of

systems as noted below:

1. Series Loop Forced Circulation Hot Water

2. One-Pipe Forced Circulation Hot Water

3. Two-Pipe Reverse Return Gravity or Forced Circulation

Hot Water

4. Two-Pipe Steam or Vapor.

It is not recommended that BASE-RAY be used in a One-Pipe

Steam System.

System Description

1. Series Loop is a forced circulation hot water heating system

with the BASE-RAY Assemblies connected so that all the

water À owing through a circuit passes through each series-

connected Assembly in the circuit. Thus, the Assemblies

serve as portions of the main.

2. One-Pipe is a forced circulation hot water heating system

utilizing one continuous main from boiler supply to boiler

return. BASE-RAY Assemblies are connected to this pipe

or main by two smaller pipes known as branches. When

connecting these branches to the main, one of the standard

tees is replaced by a special tee frequently called a one-pipe

¿ tting. These one-pipe ¿ ttings cause a portion of the water

À owing through the main to pass through the BASE-RAY

Assemblies and back to the main again.

3. Two-Pipe Reverse Return is a gravity or forced circulation

hot water heating system utilizing one main to carry heated

water from the boiler to the BASE-RAY Assemblies and a

second main to carry the cooled water from the Assemblies

back to the boiler. The Assemblies are connected to the

return main in the reverse order from that in which they are

connected to the supply main. Very few designers use this

type of system for residential applications, since there is

no difference between the heating qualities of this system

and the other two hot water systems.

4. Two-Pipe Steam or Vapor Systems are steam systems in

which each BASE-RAY Assembly is provided with two

piping connections, and where steam and condensate À ow

in separate mains and branches. The Vapor system differs

from the low pressure system only in the type of air valve

used.

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Burnham BASE-RAY 81441001R8-3/06 User Manual Page 5

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