Gas Connection; Electrical Connections - Ferroli BLUEHELIX TECH RRT 28 C Instructions For Use, Installation And Maintenence

BLUEHELIX TECH RRT 28 C
System water characteristics
BLUEHELIX TECH RRT 28 C boilers are suitable for sealed systems only.
The water within a heating system must have the characteristics required by UNI 8065, and comply with laws and reg-
ulations in force and the provisions of EN14868 (protection of metallic materials against corrosion).
The return water from the heating system should have a "magnetic type filter" fitted to prevent any magnetite from en-
tering the pump assembly or heat exchanger
The filling water (first filling and subsequent replenishment) must be clear, with hardness below 120ppm / mg/litre and
treated with suitable chemical conditioners against the initiation of corrosion, that are not aggressive on metals and plas-
tics, do not develop gases, in low-temperature systems, & do not cause proliferation of bacterial or microbial masses.
The water in the system must be periodically checked at least once a year with the annual boiler service.The water should
possibly have a clear appearance, & a hardness level below 60ppm for new systems and below 80ppm for existing sys-
tems, pH above 7 and below 8.5, iron content (Fe) below 0.5 mg/l, copper content (Cu) below 0.1 mg/l, chloride content
below 50mg/l, electrical conductivity below 200 μs/cm, and must contain chemical conditioners in a concentration sufficient
to protect the system for at least one year. Bacterial or microbial loads must not be present in low temperature systems
Recommended chemical conditioners:
SENTINEL X100 Inhibitor and SENTINEL X300 Cleaner
FERNOX F1 Inhibitor and FERNOX F3 Cleaner
SCALEMASTER SM-1 or SM-Pro Inhibitor and SM-3 or SM-Pro Cleaner
The unit is equipped with a frost protection system that activates the boiler in heating mode when the system flow water
temperature falls below 6°C. The device is not active if the power and/or gas supply to the unit has been isolated. If
necessary, for system protection use a suitable antifreeze liquid that meets the same requirements as detailed above
and written in Standard UNI 8065.
The presence of deposits on the boilers heat exchange surfaces due to non-compliance with the above require-
ments will invoke the remainder of the warranty.

2.4 Gas connection

B
Before making the connection to the Gas supply pipework, ensure that the appliance is suitable & la-
belled for operation with the type of fuel available.
The gas must be connected to the corresponding union (see fig. 20 - C & fig. 56 - 7) in conformity with
current regulations, with a rigid metal copper pipe, installing the supplied Gas isolation valve between
the system and boiler. Make sure that all the gas connections are tightness tested. To prevent the risk
of fire or explosion.

2.5 Electrical connections

IMPORTANT
B
BEFORE CARRYING OUT ANY OPERATION THAT REQUIRES REMOVING THE CASING, DISCONNECT
THE BOILER FROM THE ELECTRIC MAINS WITH THE MAIN SWITCH.
NEVER TOUCH THE ELECTRICAL COMPONENTS OR CONTACTS WITH THE MAIN SWITCH TURNED
ON! DANGER OF ELECTRIC SHOCK WITH RISK OF INJURY OR DEATH!
B
The unit must be connected to an efficient Earthing system in accordance with applicable safety regulations.
Have the efficiency and suitability of the Earthing system checked by professionally qualified personnel; the
Manufacturer declines any liability for damage caused by failure to earth the system.
The boiler is prewired and provided with a three core cable, for connection to the electrical supply. The con-
nection to the supply must be made permanent with a double pole switched fused spur with a minimum contact
opening of at least 3 mm, a maximum fuse of rating of 3A in the Live side of the switch to the boiler. Ensure
the polarities are correct (LIVE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green wire in the connec-
tions to the power supply.
B
The boiler's supply cable MUST NOT BE REPLACED BY THE USER If the cable gets damaged, turn the
boiler off and have the cable replaced only by professionally qualified personnel. In case of replace-
ment, only use cable type "HAR H05 VV-F" 3x0.75 mm2 with max. external diameter of 8 mm. Do not splice
into the existing power cable supply for another control device as this will void any remaining warranty with the
boiler & may render the appliance unsafe to work on or use.
EN
cod. 354M1070 - Rev. 01 - 07/2018
13