Twin Pipe Flue Sytem; Horizontal Twin Pipe Flue Fitting Details Lbf81/121 - Lochinvar LBF81 Installation, Commissioning & Maintenance Instructions

9.4

TWIN PIPE FLUE SYTEM

9.4.1

HORIZONTAL TWIN PIPE FLUE FITTING DETAILS LBF81/121

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FIGURE 8.6
Kit Part Number
ASKITSS
Kit Components
1 38mm Clamp With Gasket (not visible)
2 Concentric Adaptor
3
4 60mm/38mm Adaptor And Clamp
5
6
7
8 Internal Wall Covers
9 External Wall Covers
10 38mm Terminal End
11 60mm Terminal End
TABLE 8.6
1. Determine the location of the flue terminal and air intake, taking into account minimum distances as
detailed in Figure 8.1, Table 8.1 and the relevant British Standards.
NOTE: When installing the water heater as a Type C
opposite sides of the building.
2. Taking care to protect the appliance from debris and dust, drill holes in the desired locations. The
diameter of the hole should be no more than 10mm greater than the diameter of the terminal.
3. Determine the required length of the extension pipes (items 7 & 3 in Figure 8.6) and cut as necessary.
NOTE: When determining the required lengths, the outlet extension pipe must protrude by a minimum of
150mm and the air inlet a minimum of 10mm.
NOTE: Once cut; remove all burrs and sharp edges.
4. Insert the extension pipes into the drilled holes. The terminal sections should be installed level or with a
fall to outside (Max. 10mm per metre) to prevent the ingress of water.
5. Fit the relevant air intake and flue outlet terminal end fittings, securing with the supplied screws.
6. Position the internal and external wall covers (items 8 & 9 in Figure 8.6) onto each terminal.
7. Measure, cut accordingly and fit the 38mm flue length (item 5 in Figure 8.6) to the flue hood assembly
using the 38mm gasket and clamp provided.
8. Slide the 60mm/38mm concentric adaptor (item 2 in Figure 8.6) over the 38mm pipe and push fit onto
the flue hood. Tighten the adaptor clamp bracket (item 4 in Figure 8.6) over the 38mm pipe.
9. Fit the 38mm 90° bend (item 6 in Figure 8.6) onto the 38mm flue length, secure the elbow by using the
38mm gaskets and clamps provided.
10. If additional lengths of flue pipe are required to connect to the terminals these should be measured, cut
accordingly and fitted. If no additional components are required fit the flue lengths to the 38mm elbow
and the 60mm connection on the concentric adaptor.
11. With all components in position, tighten any support brackets used.
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HORIZONTAL TWIN PIPE FLUE KIT FOR LBF81/121
Description
Twin Pipe Flue Kit
60mm Terminal
38mm Flue Length
38mm 90°Bend
38mm Terminal
HORIZONTAL TWIN PIPE FLUE KIT AND COMPONENTS LBF81/121
Additional Components
ASPR38 38mm Extension (Adjustable 100mm)
ASPR60 60mm Extension (Adjustable 100mm)
ASCV384
ASCV389
ASCV604
ASCV609
appliance, the terminals must not be installed on
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10
11
Description
38mm 45°Bend
38mm 90°Bend
60mm 45°Bend
60mm 90°Bend
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