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THERM-X MVHRU IOM
Page 72 of 108
Version 2.2, 18/06/2020
TERMINAL
DESCRIPTION
TERMINAL
DESCRIPTION
3
A (5-6)
LF1
–
INLET DAMPER (output L
–
open, 230V/2A AC)
LF2
–
OUTLET DAMPER (output L- open, 230V/2A
AC)
13
B (3-4)
HEAT PUMP CONTROL (output - ON/OFF,
maximum load 230VAC / 2A)
4
A (7-8)
RUN CONTACT (output - NO/NC (settable), maximum
load 230VAC / 2A)
15
B (7-8)
HEAT PUMP COOL / HEAT settable (CO = NC/NO - DX = settable, volt free)
5
A (9-10)
ERROR CONTACT (output NO, maximum load
230VAC / 2A)
17
B (11-12)
HEAT PUMP DEFROST settable (input NC/NO(settable), volt free)
7
A (13-14)
BOOST CONTACT (input NO, volt free)
18
B (13-14)
HEAT PUMP ERROR settable (input NC/NO(settable), volt free)
8
A (15-16)
FIRE CONTACT (input NC, volt free)
19
B (15-16)
PIR MOTION SENSOR (input NC, volt free)
9
A (17-18)
EXTERNAL CONTROL ON/OFF (input NC, maximum
load 230VAC / 2A)
20
B (17-18)
CONDENSATE OVERFLOW (input NC, volt free)
10
A (19,20)
POST-HEATER MODULATION (output 0-10V OR
PWM)
21
B (46-47)
EXTERNAL TEMPERATURE SENSOR (external post-heater
–
input, EXT-4, NTC 10K)
11
A (43-44)
AQS SENSOR 0-10V (input 0-10V)
22
B (44-45)
EXTERNAL TEMPERATURE SENSOR (external pre-heater
–
input, INT-0, NTC 10K)
23
B (38-39)
EXTERNAL PRE-HEATER MODULATION (output 0-10V)
24
B (36-37)
EXTERNAL POST-HEATER MODULATION (output 0-10V)