Connecting The Condensate Drain Pipe; Connecting The Expansion Vessel In A Single-Boiler System - Worcester GB162-50 Installation And Servicing Instructions

When discharging condensate to an outside drain
caution must be taken to ensure blockage cannot occur
during freezing conditions. If this is likely to occur, the
use of a condensate trap is recommended.
1
Ø21.5 mm min.
1000 mm min.
2
Ø100 mm min.
3
4
Fig. 22 External termination of condensate drain pipe to absorption
point
[1] External length of pipe 3 m max.
[2] Plastic tube
[3] Bottom of tube sealed
[4] Limestone chippings
[5] Two rows of three 12 mm holes at 25 mm centres, 50 mm from
bottom of tube and facing away from house
[6] Hole depth
[7] Ground (either/or)

8.2.11 Connecting the condensate drain pipe

▶ Connect the condensate drain pipe to the condensate trap
( fig. 23, [1] and fig. 24, [1]).
1
Fig. 23 Connecting the condensate trap
[1] Condensate trap
6720813171 (2015/04)
7
6
400 mm min.
5
6 720 648 726-022.1TD
6 720 648 726-023.1TD
1
Fig. 24 Condensate drainage pipe
[1] Minimum distance > 2 cm
Observe the following regulations:
• The (local) waste water disposal regulations.
• The condensate trap in the connection kit must not be permanently
connected to the condensate drain pipe. The minimum distance
between the condensate trap and the condensate drain pipe is 2 cm.
An air gap should be maintained between the boiler condensate trap and
the condensate pipework.

8.2.12 Connecting the expansion vessel in a single-boiler system

CAUTION: Damage to the installation due to faulty
pressure relief valve.
▶ The expansion vessel must be of sufficient capacity.
▶ Connect the expansion tank to the boiler return (CHR). If a non-return
valve is available: connect the expansion vessel to the CH-side of the
non-return valve in the return circuit ( fig. 25, [1]).
Fig. 25 Connecting the expansion vessel in a single-boiler system
[1] Expansion vessel
Installation
6 720 648 726-024.1TD
1
6 720 648 726-025.1TD
19