Installation manual

23
Between PINS 4 and N of the terminal strip (see Fig.
13),there is an output (1ph ~ 230V, 2A max) that can be
programmed using the remote User Comfort Interface (see
the control manual, Installation Menu code 106). when
OAT < Temperature set in KHP0008 code 150 (but OAT >
temperature set in KHP0008 code 148). In this region
HP keeps working and backup heater turns on if set point
on water is not reached by 5°C (value can be set with
KHP0008 CODE 152) for 10 minutes (value can be set
with KHP0008 CODE 151). Backup heater turns off when
set point on water is reached again.
It is possible to connect an additional water pump
through the pins 12 and N. It is managed in the
following way:
If OAT > temperature set in KHP0008 code 148
The additional water pump activation depending on the
setting of KHP0008 code 156
1. ON/ OFF depending on the outdoor unit water pump
logic, in case of SHW activation ADD WP is ON;
2. ON/ OFF depending on the outdoor unit water pump
logic, in case of SHW activation ADD WP is OFF;
If OAT < temperature set in KHP0008 code 148
The additional water pump activation depends on the
setting of KHP0008 code 157 (0. always ON, 1. always
OFF or 2. ON/OFF depending on EHS).
On PIN 21 of the terminal strip (see Fig. 13) an alarm
input (dry contact) is available to force off the unit.
When the contact is closed (Pin 21 active) the whole
system is turned OFF (Unit OFF, WP OFF, GMC alarm n°
2). When the dry contact open the system turns ON and
works in the last configuration.
It is possible to use this feature connected with different
external control systems and/or safety devices. For
example in case of danger an external safety device could
send an output alarm signal to close the contact. So the
outdoor unit turns off and remains in that condition until
the dry contact is reopened.
Terminal Strip Pin Layout
Aeromax Plus
Description PIN Signal Limits KHP0008 Installation Menu
Additional external
temperature
2324 I nput(NTC3kΩ @25°C) N.A. 126
Sanitary Water Request 13 - 15 Input (contact
switch
N.A. N.A.
Maximum Frequency
Reduction
13 - 14 Input (contact
switch
N.A. N.A.
3-way valve 10 - 18 - N Output 230Vac (18-N:
Power supply, 10
1 ph ~ 230V, 2A N.A.
1- External Heat Source Request 4 - N Relay Output Contact 1 ph ~ 230V, 2A 106 - 148 -150 -151 - 152 -154 -155
2- Defrost
1- Alarm
5 - N Relay Output Contact 1 ph ~ 230V, 2A 147
2- Ambient temperature reached
1- Alarm + defrost
11 - N Relay Output Contact 1 ph ~ 230V, 2A 107 - 108
2-Humidifier
1- Trace heater
12 - N Relay Output Contact 1 ph ~ 230V, 2A 156 - 157
2-Additional WP
Alarm input
21
Input (contact switch
quality >25mA@12V)
N.A. N.A.
External Water Circulator 16 - N Relay Output Contact 1 ph ~ 230V, 2A N.A.
NORMAL / ECO Mode 8 - 3 Dry contact N.A. N.A.
Auxiliary accessories connection
Signal for requesting an External Heat Source or Dehumidification
IMPORTANT NOTICE :
In case of SHW activation (pins 13-15 closed) heat pump
will turn on and backup heater will turn off. This will
happen in both the above strategies.
WARNING :
In case of EHS installation, it is mandatory to install a
thermal switch on the water circuit to protect the system
from too high water temperatures. This protection item
has to be located downstream from the EHS.
Additional water circulator for Aeromax Plus
External Alarm Input
Note: The maximum total instantaneous current must be less than 3.5A. In the case of loads with higher
absorbed current, it is necessary to drive the loads with relays to be inserted between the power supply of the
load itself and drive the relays from the terminal strip.