THERMO 2000 VENTUM, Installation And Operation Manual

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VENTUM HYDRONIC AIR-HANDLER Installation and Operation Manual (Revised: June 2021)
25
START-UP
Before operating this hydronic air-handler, be sure to read and follow these instructions, as well as the
warnings printed in this manual. Failure to do so can result in unsafe operation of the unit resulting in
property damage or bodily injury. Should you have any problems reading, following or difficulty in
understanding the instructions in this manual, STOP, and get help from a qualified person.
PREPARATORY STEPS
❑ Make sure that all plumbing and electrical
connections have been made.
❑
Confirm that the thermostat connections
comply with Section 3.6.
❑ Validate that the controller has been
configured properly according to the
needs and to Section 4.2.
❑ Make sure that the plumbing network is
purged of air.
❑ Check for water leaks.
❑
Check that there are no obstructions in
the ventilation duct system.
❑ Make sure the filter is in place.
❑ Adjust the thermostat so as to generate a
demand for heating or air conditioning.
o
If a heating demand is active, the
circulating pump should start
working (the symbol is active
on the display). If the water
temperature at the coil outlet
exceeds
the target heating
temperature (

), the fan will
come on.
o
If an air-conditioning demand is
active, the compressor will start
up via the Yout contact. The fan
will come into operation at low
speed, when the outlet air
temperature is lower than the
target
air conditioning
temperature (

), the fan will
increase to the set cooling
speed.
CHECKING OPERATION
❑ When a heating request is active, check
that the fan and the pump are running.
❑ After a demand for heat, the pump should
shut off and the fan should continue to
operate until the radiator temperature
reaches the temperature selected in the
parameter

(90 °F (32 °C) by
default).
WARNING
!