Start-Up Instructions; Starting Up Boiler; Prepare Pressure Measurement; Turning On Heating System - Buderus Logano GC 124 II User Manual

4

Start-up instructions

4 Start-up instructions
For your own safety, read before boiler start-up.
WARNING: Risk to life due to not observing the start-up
instructions and resulting malfunction.
B If these instructions are not followed exactly, fire or
explosion may result causing serious property
damage, loss of life, or serious personal injury.
B Observe the installation instructions.
WARNING: Danger of explosion
If you smell gas there is danger of explosion!
B No open flame! No smoking!
B Prevent spark generation. Never operate electrical
switches, including telephones, plugs or door bells!
B Close main gas shut-off!
B Open windows and doors!
B Warn all occupants of the building!
B Evacuate the building!
B Call gas company, heating contractor or fire
department from outside the building.
This unit is equipped with an automatic igniter that starts
the burner. Do not attempt to ignite the burner manually.
WARNING: Risk to life due to water damage.
B Do not operate the unit if any part is or was
submerged in water.
B Contact a qualified customer service technician
immediately to have the unit checked and all parts of
the control and gas valves replaced that were in
contact with water.
4.1

Starting up boiler

B STOP! First perform a leak test as described on page 5 of this manual.
B First read the safety instructions on this page.

4.1.1 Prepare pressure measurement

B Remove the screw plug for the gas pressure measurement port on the
gas valve. Install pressure measuring nipple and attach a pressure
gauge to measure the gas pressure.
B Remove the screw plug for the orifice pressure measurement port on
the gas valve. Install pressure measuring nipple and attach a pressure
gauge to measure the orifice pressure.
B Open gas shut-off.
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1
4
Fig. 7 Gas valve
[1] ON/OFF knob (shown in ON position)
[2] Screw plug for gas pressure measurement port
[3] Screw plug for orifice measurement port
[4] Ignition gas line connection

4.1.2 Turning on heating system

The boiler is fully functional with the factory-installed aquastat and field
installed and connected vent damper.
B Switch on power to the heating system, continue to chapter 5
( page 7).
B Verify that the thermostat (optional) signals a heat demand to the
boiler (set temperature dial at least 10°F above ambient).
1
Fig. 8 ON/OFF switch
[1] Emergency shutoff switch
Logano GC 124 II – 6 720 804 435 (2012/09)
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6 720 804 435-07.1T
6 720 804 435-08.1T