Connecting The Condensate Drain Pipe - Buderus Logamax plus Installation Instructions Manual

6.4

Connecting the condensate drain pipe

NOTICE
The condensate must be drained from the boiler
in accordance with local, state or federal rules
and regulations.
NOTICE
Use materials approved by the authority having
jurisdiction. In the absence of such authority,
PVC and CPVC pipe must comply with ASTM
D1785, F441 or D2665. Cement and primer
must comply with ASTM D2564 or F493.
For Canada, use ULC certified PVC or CPVC
pipe, fittings and cement.
Install the condensate drain pipe taking the following into
account:
– An air gap of at least 1" (2.54 cm) must be maintained
between the boiler condensate trap hose and the
condensate pipework, see fig. 16 and fig. 17.
– If the condensate outlet of the boiler is lower than the
drain, a condensate pump must be used.
– The condensate produced by the boiler has a pH value
between 3 and 4.
Install a neutralization unit if required by the local code.
6.4.1 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. If a
check valve is available: connect the expansion vessel to
the CH-side of the check valve in the return circuit
(fig. 18, pos. 1).
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
1
Fig. 16 Connecting the condensate trap
1
Fig. 17 Condensate drainage pipe
Fig. 18 Connecting the expansion vessel in a single-boiler
system
Installation 6
>1" (2.54 cm)
> 1" (2.54 cm)
1
>1" (2.54 cm)
21