VISION
100
THR
Page 26
USE AND MAINTENANCE MANUAL
Rev. 02-18
REFRESHMENT OR PAUSE
The refreshment is a phase of the pause process of the temperature and humidity
management. Refreshments are managed with parameters Pr and dr.
Pr defines the interval between one refreshment and the subsequent one, dr defines
refreshment duration.
It is possible, at any time, to force an air change using the UP key
. (a defrosting is
also simultaneously activated).
To interrupt a refreshment, position the control in stand-by (the times are reloaded).
DEFROSTING
Defrosting can be managed with parameters d4, d5, d6, d7, F5 that define the intervals,
the maximum duration, the defrosting end temperature, the dripping and the fans stop. To
manually activate defrosting it is sufficient to press the UP key
. Defrosting is not
activated in case the temperature set for defrosting end (d6) is lower than the temperature
detected by the evaporator probe. Defrosting will complete upon reaching of the defrosting
end temperature (d6) or for defrosting maximum duration (d5).
DEFROSTING WITH HOT GAS
Set parameter d1 = 1 for managing of cycle reverse defrosting.
The compressor relay and the defrosting relay are activated for the entire defrosting
phase.
For correct plant management, it will be the responsibility of the installer to use the defrost
output that must allow the opening of the cycle reverse electrovalve and the closing of the
liquid electrovalve.
For the capillary plants (without thermostatic valve) it is sufficient to control the cycle
reverse electrovalve using the defrosting relay control.
5.19
5.18
CHAP. 5 - Data programming
5.20