User manual

Page 19
Low Loss Header
Low Loss Headers MUST be used (page 23 differs) with the S-CB Boiler Range. Low Loss Header details are below:
Heating Expansion
Vessel
DOC
LNE
Interlock
with boiler
Pressurisation Unit
With High & Low
Pressure Switches
DOC
AAV
CO
S-CB Boiler
On Board
Boiler Pump
GAS
CO
S-CB Boiler
On Board
Boiler Pump
GAS
Strainer
DP
DAS
AAV
LOW LOSS
HEADER
SV
SV SV
DOC
DOC
DOC DOC
AAV
H2
H1
H3
D4
D1
D1
Legend:
H1 = System Flow & Return Dimension.
H2 = Flow & Return Header Dimension (boiler side of LLH)
H3 = Low Loss Header Height
D4 = Low Loss Header Diameter
D1 = Diameter of common Flow & Return Headers
Output H1 H2 H3 D4 D1
kW mm mm mm inch inch
60 330 370 465 3 1½
80 340 380 480 3 1½
100 345 390 510 4 2
120 360 405 565 4 2
150 400 450 610 4 2
180 445 505 665 5 2
240 445 505 665 5 2½
300 560 620 725 6 2½
360 680 780 865 8 2½
420 780 850 980 10 4
480 780 850 980 10 4
540 780 850 980 10 4
600 780 850 980 10 4
600+
Please contact Strebel Ltd for advice
Note to Design Engineer: See quotation for equipment supplied
Low Loss Header & Common Flow/Return
Boiler Type Flow & Return Gas
S-CB Connection Connection
60kW 1 1/4"
¾"
80kW 1 1/4"
¾"
100kW 1 1/4"
¾"
120kW 1 1/4"
¾"
150kW 1 1/2"
1"
180kW 1 1/2"
1"
Boiler Connection Sizes
Please check the quotation for items that
will be supplied. Strebel can supply most
items shown at extra cost if applicable.
Note NRV’s should be used supplied by
others. Pumps are required for the system
side
See further information on pages 15 to 17