Navien NCB-20LHWE, Руководство по установке и эксплуатации

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CAUTION
Do not remove the front cover unless the power to the
boiler is turned off or disconnected. Failure to do so may
result in electric shock.
The boiler has 2 sets of DIP switches on the main circuit board
(PCB) and 1 sets of DIP switches on the front panel. DIP switches
are used to control the functionality of the boiler. Set the DIP
switches appropriately, based on the installation environment.
7.1 PCB DIP Switches
Dip Switch 1 (Set of 8)
The DIP SW 1 on the circuit board configures operation status,
boiler model/capacity, burner type, and country.
1 2 3 4 5 6 7 8
ON
Dip SW 1
Dip SW 2
1 2 3 4
ON
Switch Function Setting
1 & 2
Operation
Status
Normal Operation 1-OFF, 2-OFF
20/23/28
LHWE
MIN
1-OFF, 2-ON
33LHWE 1-stage MIN
20/23/28
LHWE
Heating MAX
1-ON, 2-ON
33LHWE
Heating
2-stage MAX
3 & 4 Capacity
20LHWE 3-OFF, 4-OFF
23LHWE 3-ON, 4-OFF
28LHWE 3-OFF, 4-ON
33LHWE 3-ON, 4-ON
5
Burner
Type
Bekaert 5-OFF
6 & 7 Country Europe 6-OFF, 7-OFF
8
Boiler
Type
Combi 8-OFF
System 8-ON
Dip Switch 2 (Set of 4)
The DIP SW 2 on the circuit board configures the external DHW
tank.
Switch Function Setting
1 DHW Tank
Used 1-ON
Unused 1-OFF
7.2 Front Panel DIP Switches
Dip Switch (Set of 8)
The DIP SW on the front panel configures the fuel selection,
source of the heat demand, and temperature control standard.
1 2 3 4 5 6 7 8
O
N
Switch Function Setting
1 & 2
Fuel
Selection
G20 (LNG) 1-OFF, 2-OFF
G25, G27(LNG) 1-OFF, 2-ON
G30 (LPG) 1-ON, 2-OFF
G31 (LPG) 1-ON, 2-ON
4 & 5
Heat
Demand
Panel 4-OFF, 5-OFF
OpenTherm
Remote Control
4-ON, 5-OFF
Room Stat 4-OFF, 5-ON
230 VAC Room
Stat (System boiler
only)
4-ON, 5-ON
6
Temperature
Control
Standard
Supply Water 6-OFF
Return Water 6-ON
7. Setting the DIP Switches
WARNING
Improperly connecting the electrical supplies can result
in electrical shock and electrocution. Follow all applicable
electrical codes of the local authority having jurisdiction.
Connecting the electrical components should be performed
only by a licensed professional.
DANGER
You must ensure that the boiler is disconnected from the
electrical supply before carrying out any servicing inside
the boiler and, particularly, on the electric terminal strips.
If the electrical supply is connected electrical
contact could occur, causing serious damage due to
electrocution.
CAUTION
Label all wires before disconnecting them when you work
on the controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
The boiler electrical connections must be made by sufficiently
qualified staff in strict compliance with the sections below and
with any electrical safety regulations applicable at the time of
installation.
Note
The NCB LHWE boiler has an electrical protection
degree of IPX5D. The electrical connection must
be made via a bipolar switch located on the same
premises as the boiler. The switch must have a
minimum pole separation of 3 mm.
8.1 Accessing the Terminal Blocks
The terminal blocks 1 and 2 of the NCB LHWE boiler are located
inside the boiler. The terminal block 1 is located to the right of
the panel and the terminal block 2 is located below the front
panel.
To access the terminal blocks 1 and 2, follow the steps below
carefully:
1. Turn off the power supply to the boiler.
2. Remove the boiler’s front cover by loosening the four screws
securing it to the case.
Note
Before connecting the cables to the corresponding
connector terminals, it is essential to thread them
through the cable glands located on the underside
of the boiler.
While threading the cables and making the
connections, take special care that no pieces
of cable fall onto the electrical connections or
electronic cards.
Make sure you have tightened the cables
sufficiently. It is essential for the boiler to be
grounded.
3. Refer to the following illustration and remove the fix screws
to access the terminal blocks.
Terminal
block 2
Terminal
block 1
8. Connecting Electrical Supplies
35 Connecting Electrical Supplies