13.2 - The various ICM configurations available
Each ICM can be fitted with one or two on/off valves, two or
three ways and flexible water pipes, depending how the unit is
configured.
a) The ICM is fitted with a speed controller and a 5-row
cooling coil which operates in cooling mode only (2 pipes).
Operates in “cooling” mode only.
This option includes a 2-way on/off valve and two insulated
flexible water pipes.
b) The ICM is fitted with a speed controller and a 5-row
cooling or heating coil (2 pipes with changeover).
Operates in cooling or heating mode. This application is of the
heat pump type.
This option includes a 3-way on/off valve, a heating/cooling
changeover switch and two insulated flexible water pipes.
c) The ICM is fitted with a speed controller, a 5-row
cooling coil and a 1-row heating coil (4 pipes).
Operates in cooling and heating mode in sequence.
This option includes 2 on/off valves with 2 ways, and 4
flexible water pipes, 2 of which are insulated and 2
uninsulated.
d) The ICM is fitted with a speed controller, a 5-row
cooling coil and an electric heater (2 pipes and 2 wires).
Operates in cooling mode or heating mode with electric heater
in sequence.
This option includes a 2-way on/off valve, 2 insulated flexible
water pipes and 1 power relay for controlling the electric
heater.
13.3 - Technical specifications for the
heating/cooling changeover switch
The heating/cooling changeover switch is designed to be
installed straight onto the couplings of the 3-way valves on the
ICM. It detects temperature changes in the fluid circulating in
the primary water circuit. A changeover switch operates
according to the water temperature in accordance with the
diagram below.
When a heating/cooling changeover switch is connected
between the room thermostat and the water flow control valve,
the changeover between heating and cooling modes takes
place automatically in accordance with the following diagram.
Wire length: 1000 mm
∆
:
Differential: 11,1 K ± 3,3
CM: Cooling mode
HM: Heating mode
θ
:
Water temperature in °C
HM
CM
