6
Installing the boiler
Logano plus GB312 – 6 720 806 273 (2013/01)
25
6.9.4
Connecting the central heating supply
▶ Install and seal the heating system supply pipe to the threaded flange
supplied.
▶ Insert the seal in the flange joint and tighten the bolts evenly.
Fig. 25 Installing the supply pipe
VK
Boiler supply
[1]
Safety valve (pressure relief valve)
[2]
Supply pipe (external with NPT thread)
[3]
Pressure/temperature gauge
[4]
Threaded flange
[5]
Non-return check valve (observe direction of flow)
[6]
Washer
6.9.5
Installing the heating system return
▶ Install and seal the heating system return pipe in the threaded
connection on the threaded flange supplied.
▶ Insert the seal in the flange joint and tighten the bolts evenly.
Fig. 26 Installing the return pipe
RK
Boiler return
[1]
Thread on boiler return
[2]
Return pipe (external with NPT thread)
[3]
Threaded flange
[4]
Washer
6.9.6
Installing the DHW Tank
A DHW Tank can be connected to the connections VK (after the B-kit)
and RK. The required cylinder charging pump can be controlled by the
control unit MC10 + BC10 (see instructions MC10 + BC10).
6.9.7
Installing the condensate drain
Do not install the safety valve (pressure relief valve) until
the leak test (
Section 6.10 page 26) has been
completed.
▶ Install the safety valve (pressure relief valve)
vertically.
▶ Install the safety valve (pressure relief valve) in
accordance with the requirements of the ANSI/ASME
Boiler and Pressure Vessel Code, Section IV.
We recommend installing a water filter (Y-strainer,
accessory) externally to the boiler return RK on site to
prevent contamination of the boiler by the water.
Observe the local regulations for connection of boiler
systems.
DANGER:
Risk of fire from flammable materials or
liquids.
▶ Do not store flammable materials or liquids in the
immediate vicinity of pipes that carry hot water.
▶ Maintain a clearance of 2" from pipes carrying hot
water.
VK
6
2
3
1
5
4
NPT
7 747 010 720-04.1RS
Notes regarding the condensate drain.
▶ Correctly drain the condensate that forms inside the
boiler and in the flue.
▶ Use a suitable siphon to drain condensate that
accumulates in the flue before it reaches the boiler
(maximum distance to boiler: 6 ft). Condensate must
not be allowed to flow into the appliance.
▶ Ensure that the condensate drain is adequately
dimensioned (at least ¾ ").
▶ Drain the condensate in accordance with local rules
and regulations. Consul local authority having
jurisdiction. Some state require the condensate to be
neutralized before entering public sewers or septic
systems.
▶ Also observe any applicable local regulations.
▶ Remove the siphon.
▶ Undo cap and fill siphon with approx. 0.3 gallons of
water.
▶ Reinstall the siphon.
DANGER:
Danger of fatal accident due to poisoning!
If the trap is not filled with water or other connections
are left open, escaping flue gas can place lives at risk.
▶ Fill the trap with water.
▶ Seal the trap and flue connections.
▶ Ensure that the sealing washer with gasket is seated
in the cap.
RK
NPT
2
1
4
3
7 747 010 720-81.1RS
