Roberts Gorden CRV-B-2 Manual Do Utilizador

21

Systems that are symmetrical are preferred because 
the vacuum available in the system branches are bal-
anced as a function of design (damper couplings are 
not needed).

Where radiant tube lengths are variable in a single 
branch, the average length shall be used to determine 
the total radiant tube length. Tailpipe will begin after 
the last radiant tube following the last burner in the 
branch.

CRV-Series is most effective when there are at least 3 
burners in the radiant branch.

To assist with the selection of burners and system 
designs, the following figures show system layouts that 
have been used extensively with CRV-Series since 
1962. Designing systems using these layouts will 
mean altering the dimensions to suit the individual 
building.

Generally, shared tailpipe reduces the available sys-
tem vacuum. See Page 14, Section 5.3 for shared 
tailpipe design rules.

Six B10 burners at minimum radiant tube length and 
2.5 ft/flow unit tailpipe, the recommended pump for 
this system is an EP-200 Series pump.

This system provides maximum radiant intensity on 
the left and right and adds supplemental radiant 
effects through the center creating very even radiant 
effects over the coverage area.

Layout to provide high system efficiency, condensed 
radiant output and good uniformity of distribution. 
Adjust the lengths as necessary for different input sys-
tems and to change the efficiency levels. 

CORAYVAC

®

Burner

Pump

Damper

Radiant Tube

Tailpipe

6" Tailpipe

30'

(9 m)

30'

(9 m)

30'

(9 m)

20'

(6 m)

20'

(6 m)

20'

(6 m)

10' (3 m)