• Air Handling Unit Connection • ERQ-AV1
• Air Handling Unit Connection • Heat pump
22
8
Wiring diagram
8 - 2 External connection diagram
2TW32006-1
ERQ-AV1
A1P
: Printed circuit board (Main)
A2P
: Printed circuit board (INV.)
A3P
: Printed circuit board (Noise filter)
A4P
: Printed circuit board (C/H selector)
BS1
∼
BS5
: Push button switch
(Mode, set, return, test, reset)
C1
∼
C4
: Capacitor
DS1
: Dip switch
E1HC
: Crankcase heater
F1U,F4U
: Fuse (T 6,3A/250V)
F6U
: Fuse (T 5,0A/250V)
FINTH
: Thermistor (fin)
H1P
∼
H8P
: Light emitting diode (service monitor orange)
: Prepare test ----------- Flickering
[H2P]
: Malfunction detection--- Light up
HAP
: Light emitting diode (service monitor green)
(A1P)
K1M
: Magnetic contactor (M1C)
K1R
: Magnetic relay (Y1S)
K2R
: Magnetic relay (Y2S)
K3R
: Magnetic relay (Y3S)
K4R
: Magnetic relay (E1HC)
K5R
: Magnetic relay
L1R
: Reactor
M1C
: Motor (compressor)
M1F
: Motor (fan) (upper)
M2F
: Motor (fan) (lower)
PS
: Switching power supply
Q1DI
: Field earth leak detector (300mA)
R1
: Resistor
R2
: Resistor
R1T
: Thermistor (air)
R2T
: Thermistor (discharge pipe)
R3T
: Thermistor (suction 1)
R4T
: Thermistor (heat exchanger)
R5T
: Thermistor (suction 2)
R6T
: Thermistor (subcooling H.EX)
R7T
: Thermistor (liquid pipe) 1
R8T
: Thermistor (liquid pipe) 2
S1NPH
: Pressure sensor(High)
S1NPL
: Pressure sensor(Low)
S1PH
: Pressure switch (High)
V1R
: Power module
V2R,V3R
: Diode module
V1T
: IGBT
X1M
: Terminal strip (Power supply)
X2M
: Terminal strip (Control)
X1M
: Terminal strip (C/H selector) (A4P)
Y1E
: Electronic expansion valve (Main)
Y3E
: Electronic expansion valve (Subcool)
Y1S
: Solenoid valve (4 way valve)
Y2S
: Solenoid valve (Hot gas)
Y3S
: Solenoid valve (U/L circuit)
Z1C
∼
Z7C
: Noise filter (ferrite core)
Z1F
∼
Z4F
: Noise filter
Cool/heat selector
S1S
: Selector switch (Fan/Cool - Heat)
S2S
: Selector switch (Cool - Heat)
Notes:
1. This wiring diagram only applies to the outdoor unit
2. L: Live, N: Neutral,
: Field wiring
3.
: Terminal strip
: Connector
: Connection
: Protective earth (screw)
: Relay connector
: Noiseless earth
: Terminal
4. Refer to the manual on how to use BS1
∼
BS5 and DS1, DS2 switch.
5. Do not operate the unit by short-circuiting protection device S1PH
6. Colours: WHT: White / RED: Red / BLU: Blue /
BRN: Brown / GRN: Green / YLW: Yellow / ORG: Orange
7. Refer to the installation manual for connection wiring to control box.
Position of
compressor
terminal
Wire entrance
Outdoor
Component
location
(Back)
(Front)
(Note 7)
C/H selector
Cool/heat selector
Cool
Heat
S2S
Air control
S1S
Fan
3TW27176-2
ERQ-AV1
Notes:
1
All wiring, components and materials to be procured on the site must comply
with the applicable local and national codes.
2
Use copper conductors only.
3
For more details, see wiring diagram.
4
Install a circuit breaker for safety.
5
All field wiring and components must be provided by a licensed electrician.
6
The unit shall be grounded in compliance with the applicable local and national
codes.
7
Wiring shown are general points-of-connection guides only and are not intended
for or to include all details for a specific installation.
8
Be sure to install the switch and the fuse to the power line of each equipment.
9
Install the main switch that can interrupt all power sources in an integrated
manner because this system consists of the equipment utilizing the multiple
power sources.
10
For detailed control box side connection, see control box manual and wiring
diagram.
Power supply
Outdoor unit
Main switch
Switch
Fuse
Switch
Fuse
Transmission line
Control box
Power line