44
Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
We reserve the right to make any changes due to technical modifications.
Boiler inspection and maintenance
16
16.4 Preparing boiler for cleaning
1.
Take the boiler out of operation (
Î
Chapter 15.1,
page 42).
2.
Open and remove front door of boiler (
Î
Fig. 19,
page 27).
3.
Turn gas valve ON/OFF knob clockwise to OFF
position. Do not use force.
WARNING!
RISK TO LIFE
from electric shock.
z
Before opening a unit: disconnect elec-
trical power and lock to prevent acci-
dental reactivation.
WARNING!
RISK TO LIFE
from explosion of flammable gases.
z
Never work on gas lines unless you are
licensed for this type of work
Fig. 38
Gas valve (GC124 II left, GC124 SP right)
1
ON/OFF knob (shown in ON position)
1
1
WARNING!
RISK TO LIFE
from explosion of flammable gases.
z
Wait five (5) minutes until all gas resi-
dues have dissipated. Check whether
there is any smell of gas, including at
floor level. If there is a gas odor, shut of
main gas valve immediately. Turn off
power to the heating system and call
your customer service technician or
gas company.