Lochinvar HERALD HCB116CE, Руководство по установке

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14.3 PRIMARY PIPEWORK HEADER SIZING
The pipework header between the primary Herald Boiler circuit and the secondary heating
circuit must be sized as per the guidance given in this section. Failure to use the correct size
of pipe header will cause operational problems and potential early failure of the boiler; this will
not be covered under the boiler warranty.
If your installation is outside the scope of this guidance, please contact Lochinvar Technical
support before proceeding with the installation.
The tables below show the pipework header sizing required in order to ensure the correct flow rate is maintained
between the Herald boiler primary circuit and the heating secondary circuit. Using the simple schematics shown in
section 14.3.2 size the pipework header (A) shown in blue and pipework header (B) shown in red.
Using the example schematics shown and assuming the Herald Boiler is an HCB46CE in both cases the header would
be sized as:
Single unit = as there is only a single heater there is no common header so all the pipework should be 35mm.
2 units = the common header shown in red (B) should be sized according to the table at 42mm with the pipework
between the header and each individual units shown in blue (A) at 35mm.
MODEL
PIPEWORK (A) BLUE SIZE
(mm)
PIPEWORK (B) RED SIZE (mm)
NUMBER OF HERALD BOILERS
1 2 3 4
HCB46CE 35 35 42 54
HCB61CE 35 42 54 54
HCB86CE 54 54 54 67
14.3.1 P
IPEWORK HEADER SIZES
14.3.2 P
IPEWORK SCHEMATIC SHOWING PIPEWORK
A
AND PIPEWORK
B