Installing The Heating Supply And Return Pipe; Installing The Pump; Installing The Condensate Trap - Buderus Logamax plus GB162-80 kW Installation Instructions Manual

6.4.4 Installing the heating supply and return
pipe
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Fig. 12 Connecting the boiler supply and return
1: Supply
2: Return
3: Isolating valves
4: Drain cock
5: Gas valve
6: Pressure relief valve
7: Condensate trap
8: Pump
9: Non-return valve
10: Dirt filter (for example scale cartridge or y-strainer)
11 Gas supply
12 Air gap > 1" (25.4 mm)
NOTICE
B When using plastic pipes, observe the
supplier's instructions - especially those
referring to recommended jointing
techniques and the notes relating to the
heating system water on page 9.
NOTICE
B To prevent contamination in the heating
system we recommend you integrate a
dirt filter (fig. 12, [10) in the return pipe,
near the boiler. In an old system it is
a requirement to install a dirt filter. Also
install shutoff valves to enable filter
cleaning immediately upstream and
downstream of the dirt filter (scale
cartridge or y-strainer)
• Connect the supply pipe with a flat rubber seal installed
to the Supply connection (fig. 12, [1]) making sure it is
not under stress. Use a supply pipe with a minimum
diameter of 1½" (38 mm)
• Connect the return pipe with a flat rubber seal installed
to the Return connection (fig. 12, [2]) making sure it is
not under stress. Use a return pipe with a minimum
diameter of 1½" (38 mm).
Logamax plus GB162- 80/100 kW - Subject to modifications resulting from technical improvements!
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6720645916-12.1TD
6.4.5

Installing the pump

Always use the supplied Buderus pump group and the
low loss header when installing a single boiler so correct
flows are guaranteed. It is not necessary to install a low
loss header for cascade systems.
• Install the pump (fig. 12, [8]) in the return circuit
(fig. 12, [2]).
6.4.6

Installing the condensate trap

WARNING:
Danger of fatal accident due to poisoning
B If the condensate trap is not filled with
water, flue gas can escape and put
people's lives at risk.
Fig. 13 Filling the condensate trap with water
• Fill the condensate trap (supplied with the boiler) with
water (fig. 13).
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Fig. 14 Installing the condensate trap
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Installation
6 720 646157-13.1TD
6 720 646157-014.1TD
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