Robur K18 Hybrigas, Installation, Use And Maintenance Manual, Page: 34 / 60

Electrical installer
34
4
Flue gas condensate discharge manifold
To make the condensate drain manifolds:
▶
Size the ducts for maximum capacity (maximum condensa-
tion and defrosting water flow rate) (Table 1.2
p. 22).
▶
Use plastic materials resistant to acidity pH 3-5.
▶
Provide for min. 1% slope, i.e. 1 cm for each m of the length
(otherwise a booster pump is required).
▶
Prevent icing.
▶
Dilute, if possible, with domestic waste water (e.g. bath-
rooms, washing machines, dish washers...), basic and neu-
tralising.
In the first few minutes of unit operation, that is in con-
ditions of low condensate production, imperceptible
steam or combustion gas might escape the condensate
exhaust, which are not harmful either for machine oper-
ation or for the materials used for condensate exhaust.
3.12
DEFROSTING WATER DRAINAGE
Defrosting
In winter, frost may form on the finned coil and the appli-
ance performs defrosting cycles.
The defrosting water drain is located below the finned coil itself
(see reference E in Figure 1.3
p. 10).
Prevent freezing of defrosting water drain by using a heating
wire (by the installer) to protect the discharge and the pipes.
4 ELECTRICAL INSTALLER
4.1 WARNINGS
General warnings
Read the warnings in Chapter III
p. 4, providing im-
portant information on regulations and on safety.
Compliance with installation standards
Installation must comply with applicable regulations in
force, based on the installation Country and site, in mat-
ters of safety, design, implementation and maintenance
of electrical systems.
Installation must also comply with the manufacturer's
provisions.
Live components
▶
After placing the appliance in the final position, and prior
to making electrical connections, ensure not to work on live
components.
Earthing
▶
The appliance must be connected to an effective earthing
system, installed in compliance with regulations in force.
▶
It is forbidden to use gas pipes as earthing.
Cable segregation
Keep power cables physically separate from signal ones.
Do not use the power supply switch to turn the ap-
pliance on/off
▶
Never use the external isolation switch (GS) to turn the ap-
pliance on and off, since it may be damaged in the long run
(occasional black outs are tolerated).
▶
To turn the appliance on and off, exclusively use the suitably
provided control device.
4.2
ELECTRICAL SYSTEMS
Electrical connections must provide:
A. power supply (Paragraph 4.3 p. 35);
B. control system (Paragraph 4.4 p. 35);
C. alarm indicator lamp (if there is no optional system control-
ler, Paragraph 4.5 p. 37);
D. unit error reset remote (if there is no optional system con-
troller, Paragraph 4.6 p. 37);
E. temperature probes (Paragraph 4.7 p. 37).