TM_i-BX(-N)_NC05_00_06_20_EN
MEHITS S.p.A.
●
TECHNICAL MANUAL
Version NC05 - Translation of the Original Instructions
65
8
INPUT / OUTPUT CONFIGURATION TABLE
8.1
AIR / WATER INVERTER UNIT WITH DHW MANAGEMENT (WITH 3-WAY VALVE)
This section defines the I/O used with the controller configured for the management of inverter air / water units, with production of domestic hot water,
with 3-way valve (
i-BX-N family)
.
pCO size
Medium
Thermostatic valve
Electronic
Compressors
1
Analogue Inputs
Connector
Type
Description
J3
B1
4-20mA System exchanger water input
B2
NTC
System exchanger water output
B3
NTC
DHW storage tank temperature (opt)(1)
B4
NTC
External air temperature (Machine)
B5
4-20 mA High pressure
B6
NTC
Mixed circuit temperature (opt) (2)
B7
NTC
Inertial storage tank temperature (opt) (3)
J18
B8
-
N/A
B9
-
N/A
B10
4-20 mA Low pressure
B11
NTC
Compressor delivery temperature
B12
NTC
Compressor intake temperature
FREE
2
(opt) optional in relation to the factory configuration
(1) Enable with parameter 0232. The probe is automatically enabled by
enabling DHW
(2) Enable with parameter 0315 or automatic enable of the probe with
system type requiring at least one low temperature zone.
(3) Enable with parameter 0314 or automatic enable of the probe if boiler or
delivery heater enabled.
Analogue Outputs
Connector
Type
Description
J5
Y1
-
N/A
Y2
-
N/A
Y3
PWM /
0-10V
DC
AC/EC fan (**
Y4
0-10V
DC
LT1 mixed valve
FREE
2
** The Y3 analogue output is used to manage the modulating
fan. The output can be controlled in two modes: 0/10V or
phase cut (for MCHRTF regulators).
The working mode is set using parameter 136L (0/10V or
phase cut).
Selecting “phase cut” will make parameters 136M, 136N and
136O available. These parameters can be used to set the triac
for the control of the MCHRTF device.
