___________________________________________________________________________ NT 1965 A - 03/201939
I/O
Description
AO 1
Recovery unit BY-PASS damper control (0-10V)
AO 2
Preheater control (0-10V)
AO 3
Not used
AO 4
Not used
AO 5
Return air fan control (0-10 V)
AO 6
Supply air fan control (0-10 V)
Digital outputs (relay)
DO 1 V1 I
DO 2 V2 I
DO 3 V3 I
DO 4 V1 O
DO 5 V2 O
DO 6 V3 O
DO 7 NO 1
Alarm report
DO 8 NO 2
Operating relay
DO 9 NO 3
Fresh air flap control
DO 10 NO 4
BY-PASS damper
DO 11 OC1
Electric heater control (PWM)
DO 12 OC2
Supply air fan speed 0
(*2)
DO 13 OC3
Summer-Winter season activated / Return air fan speed 0
Real Time Clock (RTC) system clock:
available through the remote control.
13
MAINTENANCE
13.1
FILTER REPLACEMENT
TECHNICAL ASSISTANCE
The need to replace the filter is indicated on the control unit screen – Chapter 6.4-7.
Open the filter access door by releasing the closing latches using an Allen key (for hexagon socket bolts). Remove the
filters from their runners. Check the number of filters and France-Air codes below. Replace the filter(s), ensuring that
you also replace the seals, if necessary.
NB!
The operation of the unit may be adversely affected and the fan damaged if the filter is not properly cleaned or replaced.
