7
Placing the heating system in operation
Logano plus GB312 – 6 720 806 273 (2013/01)
32
Fig. 37 Pressure/temperature gauge
▶ Top up heating water or drain off water via the drain & fill valve until
the required operating pressure has been reached.
▶ While filling, bleed the heating system via the radiator bleed valves.
Fig. 38 Topping up heating water or draining off heating water via the
drain & fill valve
[1]
Fill and drain valve
7.2
Checking for leaks
Before commissioning, all new sections of gas piping must be checked
for external leaks.
▶ Check the new section of piping for external leaks up to the sealed
joint where it directly joins the gas valve.
If the leak test identifies a leak, use a non corrosive soap / leak
detector on all joints to check for additional leaks. The agent must be
approved for gas leak testing. Do not apply the agent to electrical
connecting cables.
▶ Confirm completion of the leakage test in the commissioning report.
7.3
Checking appliance equipment
7.4
Checking the air intake and outlet openings and flue
connector
▶ Check whether the air intake and outlet openings comply with local
codes and those of your gas supplier.
▶ Check that the flue connector complies with the applicable
regulations (
Section 6.8, page 22).
▶ Check that the flue pressure does not exceed the available pressure
of 0.4 inches W.C. (100 Pa).
CAUTION:
Health risk from contaminated drinking
water!
▶ Observe all country-specific regulations and
standards regarding the prevention of drinking water
contamination.
The boiler is equipped with a low-pressure sensor. This
prevents the boiler from starting up if the pressure is
below approx.
9 psi
.
7 747 010 720-24.2RS
7 747 010 720-25.1RS
1
DANGER:
Risk of explosion from leaking gas lines and
gas connections!
▶ Use soap solution to carry out a proper leak test.
DANGER:
Risk of system damage due to short-circuits!
▶ Prior to checking for leaks, cover areas at risk, e.g.
the internal water pressure sensor and the return
temperature sensor in the boiler return.
▶ Never spray or let leak detection agent drip onto
cable entries, plugs or electrical cables/leads.
Gas type
Settings
Natural gas (gas
type A)
Delivered factory-set ready for use. The gas valve is
set and sealed.
Calorific value for 60 °F, 30 ins Hg
Set to 1075 BTU/FT
3
Table 15 Settings
CAUTION:
Risk of boiler damage from the wrong gas
type!
The burner may be used only with the type of gas
specified for it.
▶ Check whether the actual gas type is the same as that
stated on the data plate.
DANGER:
Danger of fatal accident due to poisoning!
Insufficient ventilation may cause dangerous flue gas
leaks.
▶ Never close off or reduce the size of air intake and
outlet openings.
▶ Never operate the boiler unless faults are rectified
immediately.
▶ Inform the system user in writing of the problem and
associated danger.
