Buderus GB402-320-5, Инструкции по установке и обслуживанию для подрядчиков

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6 Fitting
Logano plus GB402 – 6 720 820 700 (2018/01) 21
6.6 Filling the heating system and checking for leaks
Before commissioning, check the heating system for leaks to prevent
problems during operation.
▶ To ensure good ventilation, open all heating circuits and thermostatic
valves prior to filling the system.
▶ Prior to filling the heating system, carefully read the enclosed
operator's log on water quality.
▶ Open safety caps on all automatic air vent valves.
▶ Open the fill and drain valve.
▶ Slowly fill the heating system using a filling facility. During the filling
observe the pressure gauge.
Fig. 18 Pressure gauge for sealed systems
[1] Red needle
[2] Pressure gauge needle
[3] Green marking
▶ Close the water tap and the drain & fill valve once the required test
pressure has been reached.
▶ Check the connections and pipework for leaks.
▶ Vent the heating system via the radiator air vent valves.
▶ Top up with water if the pressure drops as a result of venting the
system.
▶ Remove the hose from the drain & fill valve.
▶ Carry out a leak test in accordance with locally applicable
regulations.
▶ Once the heating system has been tested and no leaks have been
found, set the correct operating pressure.
NOTICE: System damage through boiler scaling!
▶ Observe the water quality requirements in
accordance with the "Water Quality Operators Log"
and enter the volume and quality of the fill water.
NOTICE: Risk of system damage through excessive
pressure when testing for leaks!
Pressure, control and safety equipment may be
damaged by excessive pressure.
▶ After filling the system pressure test to the release
pressure of the safety valve
NOTICE: Risk of system damage!
If the heating system is filled when hot, the resulting
temperature stresses can cause stress cracks. The
boiler can then leak.
▶ Only fill the heating system when cold (the flow
temperature should not exceed 40 °C).
▶ When the heating system is in operation, never
fill it via the boiler drain & fill valve. Instead, only
use the filling valve in the heating system
pipework (return).
▶ Pay attention to the water quality as specified in the
operator's log, and record the volume and quality of
fill water used.
CAUTION: Health risk through contaminated drinking
water!
▶ Observe all country-specific regulations and
standards regarding the prevention of drinking water
contamination.
▶ In Europe, observe standard EN 1717.
6 720 615 876-59.2T
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