13
3-1
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.1 HYDRAULIC LAYOUT.
Key:
1 - Domestic hot water probe
2 - Domestic hot water flow switch
3 - Gas valve
4 - Flow limiter
5 - System draining valve
6 - Burner
7 - Rapid heat exchanger
8 - Fumes hood
9 - Flue safety thermostat
10 - System expansion vessel
11 - Delivery probe
12 - Safety thermostat
13 - Vent valve
14 - Boiler pump
15 - System pressure switch
16 - By-pass
17 - 3 bar safety valve
18 - System filling valve
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic cold water inlet
R - System return
M - System delivery
3
BOILER START-UP.
(INITIAL CHECK)
To commission the boiler:
- ensure that the type of gas used corresponds to
boiler settings;
- check connection to a 230V-50Hz power
mains, correct L-N polarity and the earthing
connection;
- switch the boiler on and ensure correct ignition;
- make sure the gas maximum, intermediate
and minimum flow rate and pressure values
correspond to those given in the handbook
par. 3.17;
- check activation of the safety device in the event
of no gas, as well as the relative activation time;
- check activation of the main switch located
upstream from the boiler;
- check the existing draught during normal
functioning of the appliance, e.g. a draught
gauge positioned at the exit of the appliance
combustion products;
- check that there is no backflow of combustion
products into the room, even during functio-
ning of fans;
- ensure activation of all adjustment devices;
- seal the gas flow rate regulation devices (if
settings are modified);
- check the production of domestic hot water;
- check sealing efficiency of water circuits;
- check ventilation and/or aeration of the instal-
lation room where provided.
If even only one control inherent to safety gives a
negative result, do not start the system.
Summary of Contents for Nike Star 24 4 ErP
Page 18: ...18 3 4 3 2 2 4 1 INSTALLER USER MAINTENANCE TECHNICIAN ...
Page 27: ...27 ...
