Testing For Gas Leaks; Inlet Gas Pressure - Buderus GB162-80 kW Instruction Manual

B Replace the seal under the gas flange with a new seal
( fig. 10,[2]).
Fig. 11 Installing a new seal on the gas pipe
B Replace the seal from the gas pipe with a new seal
( fig. 11).
B Refit all parts in reverse order. When re-installing the
burner plate, make sure that the notch is on the
right-hand side ( fig. 12).
Fig. 12 Re-installing the burner plate
B Carry out the start-up activities and complete a new
start-up report.
B Check all joints and gaskets affected by the installation
activities while carrying out the tightness test in
operating conditions.
B Place a new sticker underneath the existing rating plate
sticker indicating the type of gas supply installed.
B Fill out the required information on the conversion label.
B Close the boiler door and lock the fastener by turning
the vent key through ¼ rotation in a clockwise
direction.
Logamax plus GB162-80 kW/100 kW - We reserve the right to make any changes due to technical modifications!
3.3
Prior to start-up of the boiler you must check the external
tightness of the gas supply valve and confirm this in the
start-up report.
6720615033-015.1TD
B Disconnect the boiler from the power supply.
B Check the exterior tightness of new conduit sections
up to and including the direct sealing point on the gas
burner fitting. The maximum test pressure allowed on
the input of the gas burner fitting is 60 inch W.C.
(150 mbar).
B Check the input rates after converting the boiler to LPG
to the values on the front page.
3.4
B Open at least 1thermostatic radiator valve if present to
allow water to flow through the boiler. Do not switch on
the boiler.
B Close the gas shut-off valve. Loosen the screw plug on
the inlet gas pressure testing nipple by 2 turns
( fig. 13, [1]).
B Connect the pressure gauge connection hose to the
testing nipple (
B Slowly open the gas shut-off valve.
6720615033-016.1TD
The boiler and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 60 inch W.C. (150 mbar).
The boiler must be isolated from the gas supply piping
system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 60 inch
W.C. (150 mbar).
Liquid Propane conversion

Testing for gas leaks

DANGER: Risk of explosion
B Check for leaks before working on gas-
carrying components.
CAUTION:
due to a short circuit.
B Cover damageable parts before leak
testing.
B Do not spray the leak detection agent onto
cables, plugs or electrical connection
lines. Do not allow it to drip onto them
either.

Inlet gas pressure

fig. 13, [2]).
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