Fondital TAHITI CONDENSING KC24, Инструкция по установке, эксплуатации и обслуживанию

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3.4. Starting the boiler
3.4.1. Preliminary checks
Before starting the boiler it is necessary to perform the following checks:
- flue gas exhaust pipe and terminal are installed as instructed:
when the boiler is running no products generated by combustion are
to leak from any gasket;
- electric power supplied to the boiler is to be 230 V – 50 Hz;
- the system is properly filled with water (pressure reading on water pressure gauge is to be 1 – 1.3 bar);
- all system pipes stopcocks are open.
- the gas type supplied to the boiler corresponds to that for which the boiler is set: convert the boiler to the available gas type (see 3.6.
section Adaptation to other gases and burner adjustment); the procedure is to be performed by technically qualified personnel;
- the gas supply stopcock is open;
-
there are no gas leaks
;
- the power main switch external to the boiler is on;
- the boiler 3 bar safety valve is not blocked;
- there are no water leaks;
- the pump is not blocked.
WARNING
The boiler is equipped with a pump with three speeds corresponding to the residual head to the system according to
the curves in pic. 20.
The boiler is delivered with the pump set to third speed.
When changing speed to the pump, in accordance with the flow rate required by the boiler (ensured by the primary
flow switch) and the system characteristics, verify that all the conditions relative to the system itself (such as closing
of one or more zones in the CH system or closing of thermostatic valves) are respected.
3.4.2. Switching on and switching off
For boiler switching on and switching off procedure follow § 1. “
Instructions for the User
”.
600
500
400
300
200
100
0
0 200 400 600 800 1000
Modello KC24 / KR24
Portata (l/h)
Velocità 3
Velocità 2
Velocità 1
KC24/KR24 model
Flow rate (l/h)
Speed 3
Speed 2
Speed 1
600
500
400
300
200
100
0
0 200 400 600 800 1000
Modello KC32/KR32
Portata (l/h)
Velocità 3
Velocità 2
Velocità 1
KC32/KR32 model
Flow rate (l/h)
Speed 3
Speed 2
Speed 1
pic. 20 - System head curves