External contact: A high voltage input signal for external contact is present. If the external contact is activated, device behaviour depends on its configuration on site: - Presence detection (empty room with hotel door card), Energy saving mode is activated, internal temperature is raised by 4 °C in cooling mode and reduced by 4 °C in heating mode. - Window Contact: During OFF mode (window open), all outputs are disconnected (fan, valves, etc.) and only the frost protection function is active if it has been enabled by its corresponding dip-switch. Master/Slave control: Thermostat type A_AC and B_AC: the Control Board for grouping accessory (42N9006) is allowing fan speed relay only (water valves have to be wired/ relayed separately) up to 300 units with control on Air temperature (no water valve), or 10 units 2 pipe with water control, or 5 units 4 pipe with water control Thermostat type C_EC and D_EC: The Thermostat EC motor version can control up to 10 LEC units by wiring in parallel the analogue 0-10 two-wires output signal (water valves have to be wired/relayed separately).
Moulded valve insulating shell
This is a communicating PID controller, combining energy saving algorithms and full control function solutions, compatible with the Aquasmart Evolution system package. The NTC controller can manage the EC motor option, and combines energy savings with optimised comfort.
Valve actuators: a wide choice of actuators is available with two or four-way valve bodies to offer the right solution for any controller type and customer requirement, from on/ off to proportional types, with either 230 V or 24 V power supply: - On/off 230 V actuator - On/off 24 V actuator - Floating 3-point 230 V actuator - Floating 3-point 24 V actuator When combined with LEC motors and the NTC controller, floating three-point 230-V actuators are recommended to increase energy savings and enhance comfort.
Auxiliary drain pan
An auxiliary drain pan is available as an accessory if the water valves, stop valves or balancing valves are customer-supplied. The auxiliary drain pan is not required with Carrier factory-fitted water valves, as they are factorysupplied with the valve body insulated (moulded insulating shell) to prevent condensation.
Open Communication protocol BACnet or LON Communication PID controller Large range of user interfaces wall mounted or remote Manage the motorized louvers of the grill in manual or automatic Manage the EC motor to optimise the comfort Manage a CO2 sensor to improve Air Quality Optional Light and/or Blinds management modules from same user interface Large range of sensors (light, presence, etc.)
Auxiliary drain pan for compact 42GW_S/E 200/209, 300/309, 400/409 units
Valve body: both the two-way or four-way (three-way with integrated bypass) valve options are factory-fitted and tested. The chilled-water valves are fully insulated within a moulded insulating shell, preventing condensation on the valve body. This new shell reduces the complexity of the offer and prevents water leakage risk. Valves are factoryfitted on the unit side.
Auxiliary drain pan for large 42GW_S/E 500/509, 600/609, 701/709 units
Electric heater option
Electric heater option is available only with 2-pipe coil versions. One heating capacity is available per Idrofan cassette size, factory-fitted to ensure safe and reliable operation.
Fresh air inlet option
All units have connections for fresh air ducts that can considerably improve indoor air quality while fresh air volume is managed by the CO2 sensor through NTC control. The fresh air flow must be less than 10% of the total air flow, to avoid operating problems and excessive noise. For higher air flow a primary air kit is available that uses the pre-punched hole for air ducting to an adjacent room and a baffle so that the fresh air is introduced into the room through a diffuser. 602
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