MAXA i-MAX 0466, Manual

Page: 27 / 36

i-MAX
Industrial inverter air/water heat pump with axial fans
27
To activate the function enter with maintainer password to the parameters:
Parameter Unit Default Value Description Terminals Notes
H57 Num 26 0 Digital input for second setpoint ID3E – ID3E -
H90
Num 25 -
Under-voltage output for 3 way valve
for radiant panels
DO5E(phase)
DO5EN(neutral)
Under voltage output single
phase 230Vac, 50Hz, 5A resistive,
1A inductive. To connect to relay
coil for obtaining a free contact.
The under-voltage output with live contact for switching from first to second set-point and vice versa. This can be used, for
example, for switching a hydronic valve to divert the water flow between the radiant system and the ventilation system. If it is
needed a relay should be used for the hydronic valve power supply.
9.11.2 ADJUSTABLE SETPOINTS
Setpoint type Setpoint (summer/winter) Summer Winter
First setpoint (°C) Coo/Hea 7 (5÷18) 45 (35÷57)
Second setpoint (°C) Co2/He2 18 (7÷23) 35 (25÷45)
For setting the setpoint from the on-board control panel, you can use the SET button.
The second setpoint is greater than the first setpoint in the summer and lower in the winter:
• in the summer: T2 >= T
• in the winter: T2 <= T
9.11.3 COMMUTATIONS
The commutation sequence from first (normal) set-point to the second setpoint:
•
in the summer operation: Commutation of the 3-way valve only when the second set-point -5°C is achieved.
•
in the winter operation: commutation of the 3-way valve only when the second set-point +5°C is achieved (at any case after
5min from setpoints modification, the commutation of the valve will be carried out)
The commutation sequence from second set-point to the first setpoint:
• Commutation of the 3-way valve
•
Modification of the operating setpoint after a lap of time equal to the required time for opening of the 3-way valve.(default
b04=30s
from maintainer menu)
9.12 SECONDARY CIRCULATOR MANAGEMENT (RELAUNCHING PUMP)
As an alternative to the double set-point function, it is possible to manage a secondary or relaunching circulating pump for the
plant circuit utilizations.
An ambient thermostat must be appropriately configured (NC state) connected on the terminals DI3E-DI3E (by the installer).
− Thermostat contact normally open

Active secondary circulator;
− − Thermostat contact normally closed

the secondary circulator will stop after a delay given by P02 (post-pumping)
To enable this function, enter at the parameters menu PRG

PSS

PRG

(introduce the maintainer password)

PRG

PAr

PRG

CnF
Parameter Unit Value Description Terminals Note
H57 Num 19 Digital input for thermostat call ID3E - ID3E -
H90 Num 43
Under voltage output for
secondary circulator
DO5E(phase)
DO5NE(neutral)
Under voltage output single phase 230Vac, 50Hz,
2A (AC1), for
connection to the relay coil to get a
free contact.
The thermoregulation of the pump is depending on the thermostat call.
With Heat Pump in Off status, the secondary circulator will stop operation independently than the thermostat call.
10 HANDBOOK FOR SOME CONFIGURATIONS OF INSTALLATION
For more information about some configurations, you can contact our office and ask for the handbook in which there is a series of
some recommended drawings of plants which have been highlighted in relationship with the installation configurations of our high
efficiency heat pumps. The "Handbook" shows the symbiotic potential with some of our products in the catalogue.
11 TABLES OF ALLOWED CONFIGURATIONS FOR THE USER AND INSTALLER
WARNING
All the operations with installer visibility must be carried out by qualified personnel.
Not all the configurations can be simultaneously enabled and/or changed.
Other values different than those of default may ensure the proper operation of the unit, in case of necessity
contact please our office.
The company excludes any contractual and extra contractual liabilities for damages caused to persons,
animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and
the partial or superficial reading of the information contained in this manual
The company declines any responsibility in the case of breaking or malfunctioning if caused by the modification of the factory
setting parameters by third parties not that are expressly authorized.