Mitsubishi Heavy Industries HMK60, Руководство по установке

Страница: 155 / 288

51
Electrical installation
■ Temperature sensor, fl ow line cooling (BT64)
Temperature sensor BT64 is required in case 4-pipe system
is used for cooling operation. (see page 26-28 for diagram)
This option can be chosen only in case cooling function is
activated.
■ Contact for external tariff blocking
In cases where external tariff blocking is required it must be
connected to terminal block X2.
Tariff blocking means that the additional heat, the
compressor, heating and cooling are disconnected by
connecting a potential free switch function to the input
selected in menu 5.4.
A closed contact results in the electrical output being
disconnected.
■ Switch for “SG ready”
NOTE
This function can only be used in mains networks
that support the "SG Ready"-standard .
"SG Ready" requires two AUX inputs.
This function can only be used in power supply networks that
support the “SG Ready” standard. “SG Ready” requires two
AUX inputs.
“SG Ready” is a smart tariff management scheme in which
electricity supplier can aff ect indoor and hot water temperature
or simply prohibits additional heat and/or the compressor
operation in heat pump at certain period of the day. You can
choose which operation mode is affected by this function in
menu 4.1.5 after the function is activated.
Choose two external input circuits and connect potential-free
switches, and set “SG Ready A” and “SG Ready B” in menu
5.4. The system works diff erently according to the combination
of the circuit open/closed.
Blocking (A: Closed, B: Open)
“SG Ready” is active. Compressor operation and additional
heat is prohibited.
Normal mode (A: Open, B: Open)
“SG Ready” is not active. No eff ect on the system.
Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system operates to provide higher
capacity than normal mode by using lower tariff electricity.
You can select the operation mode (heating/hot water/
cooling) aff ected by this function in menu 4.1.5.
Overcapacity mode (A: Closed, B: Closed)
“SG Ready” is active. The system supplies higher capacity
than Low price mode since the electricity price is supposed
to be very low in this mode. You can select the operation
mode (heating/hot water/cooling) aff ected by this function in
menu 4.1.5.
External circulation pump
Connect the external circulation pump (GP10) to terminal
block X4:9 (PE), X4:10 (N) and X4:11 (230 V) on the base
board (AA2) as illustrated.
8 9 0 1 1 1 2 1 3 1
SMO
Externt
PE
L
N
External
RC-HY 20/40
AA2-X4
GP10
LEK
L N 1 1 0 2 3 4 PE
AA2-X4
RC-HY20/40
AUX inputs
Other external inputs are available on the port 11 through 18
on X2 terminal on RC-HY20.
AUX1, 2, 3, 4, 5, and 6 correspond to the port 11, 12, 13, 15,
16 and 17 respectively. Port 14 and 18 are GND and are
common to the all auxiliary circuit. Connect a sensor or switch
between AUX and GND with a two-core cable with a minimum
cross section of 0.5mm
2
.
LEK
L N 1 1 0 2 3 4 PE
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
X2
AUX1
AUX2
AUX3
GND
AUX4
AUX5
AUX6
GND
13
12
11
19
20
21
14
18
16
17
15
RC-HY20
Select the appropriate function in menu 5.4.
block heating
activate temp lux
not used
soft in/outputs 5.4
not used
not used
not used
■ Temperature sensor, cooling/heating (BT74)
Additional room sensor (BT74) is applied in case user wants
to determine the operation mode (cooling/heating) with a
temperature in a particular room.
This option can be chosen only in case cooling function is
available.
■ Temperature sensor, external return line (BT71)
Temperature sensor BT71 is applied in case additional heater
is placed after 3-way valve (see page 27 and 28 for diagram).