Legend - Carrier 4 2 gw Installation Manual

"Hydronic Global Cassette" Fan Coil Units
Fig. 1.
A - Unit
B - Frame/Grille assembly
Fig. 15.
Heating: louvre position for correct air
flow
Cooling: louvre position for correct air
flow
Warning
To close one or two air outlets use the special kit
Fig. 18.
Nut
Wooden frame
Threaded hangers
Washers
Nut
Washers
Threaded hangers
Washers
Nut
Nut
Fig. 19.
Threaded hangers
"T" bar (to be removed)
Fig. 20.
Threaded hangers
"T" bar (to be removed)
Suspension brackets
Electrical box
Fig. 21.
False ceiling
Spirit level
Fig. 24.
Frame pre-hooking support
Safety belt
Frame supporting nuts and spacers
Fig. 25.
Gasket "A"
Gasket "B"
Air discharge
Fig. 26-27.
Cold circuit water inlet
Cold circuit water outlet
Air purge valve
Hot circuit water inlet
Hot circuit water outlet
Fig. 28.
See section "Motorized valve"
Fig. 31.
Automatic operation position
Valve body
Thermo-electric valve head
Fig. 32.
Electric heater protections
A
Manual reset thermostat
B
Automatic reset thermostat
Fig. 35.
Electrical box
Cable holder
Terminal block
Electric heater relay
Capacitor
Fusible
Valve cable inlet
Fig. 36-37.
Power supply cable
Cable
Cold valve cables
Hot valve cables (4 pipes only)
Fig. 38.
Electrical box
Cable holder
Terminal block
Electric heater relay
Capacitor
Transformer
NTC board
Fig. 39.
Electrical box
Cable holder
Terminal block
Electric heater relay
Capacitor
Power supply cable
Transformer
NTC board
EC motor board
Fig. 39e. - 39f. - 39g. - 39h.
Electrical box
Cable holder
Terminal block
Electric heater relay
Power supply cable
EC motor board
30 - NTC board
35 - Valve net
36 - 24 VAC terminal board
Fig. 40.
Electrical box
Cable holder
Terminal block
Electric heater relay
Capacitor
Power supply cable
Transformer
HDB board
Terminal block
CRC control cable (optional)
Fig. 40a.
Main board (ref. 32)
Communication board
5-wire wiring
Auxiliary terminal block
1 BLUE
2 GREY
3 WHITE
4 BLACK
5 RED
Fig. 40b.
First indoor unit
Second indoor unit
Third indoor unit
A Comunication board
B To the other terminal block
1 BLUE
2 GREY
3 WHITE
4 BLACK
5 RED
Fig. 40e.
Winter operation diagram with fresh air intake
Antifreeze thermostat
Speed controller
Fresh air fan motor
Relay 230V
a= neutral
b= cooling signal 230V
c= heating signal 230V
Fig. 41.
On/off/fan speed selector
Blue LED - cooling operation
Seasonal changeover button
Red LED - heating operation
Yellow LED - automatic operation (only for
type "B")
Energy saving button
Yellow LED - energy saving operation
Temperature knob
Fig. 42.
Screw to close the control
Screw
Screw anchor
Fig. 43.
Minimum temperature sensor (optional)
Air sensor
Internal temperature sensor
Dip-switch selector
Fig. 44.
Air intake grille
µ
Wall
¸
Undercut door
¹
Wall-fitted grille
Door-fitted grille
Fig. 45.
Duct connection flange
Clip
6 mm neoprene gasket
Insulated flexible duct
Fresh air intake
Conditioned air supply to an adjacent room
Fig. 47.
Diagram of conditioned air supply to an adjacent
room: one louvre closed
Supply air duct to adjacent room
In case of two louvres closed, the fresh air flow
towards the adjacent room is 50% higher compared
with only one louvre closed (with equal static
external pressure)
Fig. 49.
Filter removal
Fig. 50.
Filter cleaning
42 GW 31