Carrier BDB121NO170F, Use And Maintenance, Page: 5 / 20

3) ELECTRICAL HOOK-UP
To make the correct electrical connections:
1) Make sure the line voltage corresponds to the voltage indicated on the dataplate of the unit (± 10%).
2) To reach the electronic panel it is necessary to remove the front cover (C) of the condensing unit (pict.1). For this operation remove the fixing
screws and position the selector (A) on 0.
3) Unscrew the screws (B) indicated in pict. 2 and remove the cover from the electronic panel.
LINE CABLE FOR SINGLE PHASE UNITS (230 V)
- Remove the plug (D) (pict.2) and insert a cable gland
PG16. Insert the power cable (of the section indicated in
the table of fuses) in the cable gland and connect:
1) the phase wire to the terminal1 (L1) of the isolator Q1
2) the neutral wire to the terminal 5 (N)
3) the protection wire (earth) to the terminal PE
- Tighten the cable gland.
LINE CABLE FOR THREE-PHASE UNITS (400 V)
- Remove the plug (D) (pict.2) and insert a cable gland PG 16. Insert the power cable (of the section indicated in the table of fuses) in the cable
gland and connect:
1) the phase wires to the terminals 1 (L1) - 3 (L2) - 5 (L3)
2) the neutral wire to the terminal 7 (N)
3) the protection wire (earth) to the terminal PE
- Tighten the cable gland.
CONNECTION CABLE DOOR HEATER
- Remove the plug (E) (pict. 2) and insert a cable gland PG 11. Insert the cable of the door heater and connect:
1) the phase wire to the terminal 40 of the electrionic control panel (G)
2) the neutral wire to the terminal N of the electronic control panel (G)
3) the protection wire (earth) to the earth terminal (60) GND
- Tighten the cable gland.
Remeber that the voltage in output to the card is 230 V 1Amp. MAX. It is necessary to protect the door heater with a fuse (by costumer).
MICRO-DOOR CONNECTION
- Remove the plug (F) (pict.2) and insert a cable gland PG 11.
- Insert the cable deriving from the micro-door and connect the bands to the terminals 19 and 20 of the electronic control panel (G) after remo-
ving connection bridge .
The installation has to follow the sequence:
closed door - micro-door contact closed
opened door - micro-door contact opened
- Tighten the cable gland.
WARNING: do not give voltage to the micro-door as it is fed with voltage deriving from the electronic control panel (low voltage).
When the operations for the electronic panel connection have finished close with the screws B (pict.2). Close the front cover (C) of the conden-
sing unit (pict. 1).
4) PROCEDURES BEFORE STARTING
Before switching on the unit check that:
The fixing screws are properly tightened
The electrical and refrigeration connections have been made correctly
If the unit has been opened check that:
No tools have been inadvertently left inside the enclosure
The enclosure has been assembled correctly
There are no gas leaks
The panels have been fitted correctly.
5) PLACING INTO SERVICE
Perform all the above mentioned connections and then the unit can be started.
A period of pre-heating is required; this is achieved by powering up the unit without switching on the control unit for at least 2 hours (3 hours in
cold climates). This procedure must be repeated whenever the plant is idle for periods in excess of 12 hours.
5
A
C
B
D
E
F
PE
G
Q1
pict. 1
pict. 2
E
N
G
L
I
S
H