NASHIRA 150 S E residential air handling unit with enthalpy exchanger

Cabinet

is made from durable, high-density EPP. The front metal panel is finished with white powder coating. The circular connection spigots have a diameter of 125 mm (NASHIRA 150 S (E)) or 160 mm (NASHIRA 200 S (E)) and can be rotated to the sides of the unit. The connections are fitted with double-lip seals. Access for maintenance is from the underside of the unit.

Fans

Radial fans with forward-curved blades are fitted on the discharge and intake sides.

Motors

are single-phase EC motors rated at 230 V / 50 Hz.

Heat recovery

The counter-flow plate heat exchanger is made of plastic with a ZZT efficiency of up to 94 per cent. The NASHIRA S E is equipped with a counter-flow enthalpy heat exchanger with a ZZT efficiency of up to 90 per cent and a ZZV efficiency of up to 78 per cent. The heat exchanger is accessible after removing the unit’s front panel. For summer operation, the unit is fitted with a heat exchanger bypass.

Filter

A G4 filter (ISO coarse 65 per cent) is fitted as standard on the fresh air intake and exhaust air outlet. M5, F7, F9 and CA (activated carbon) filters are available as accessories for the fresh air intake.

Controls

The unit is equipped with constant flow control as standard. It is also fitted with 2 temperature-humidity sensors and 2 temperature sensors, enabling it to operate in automatic mode without the need for user intervention. The wall-mounted controller allows the ventilation intensity to be adjusted, enables manual control of the bypass, activates automatic mode and indicates when the filters are blocked. A wireless control kit is available as an accessory. Further unit settings are made using DIP switches and potentiometers on the controller’s circuit board after removing the front cover. The unit can also be controlled remotely via a mobile app or web interface (SPCM Lite M module required), via Modbus or an external 0–10 V signal. The unit has a contact on the board for activating the BOOST function with a preset run-down time of 10 minutes. A different run-down time can be set using the Modbus protocol.

Electrical connection

A three-core 230 V / 50 Hz power cable is routed from the unit.

Installation

The unit is designed for horizontal installation beneath the ceiling in indoor spaces. By switching the DIP switch, it is possible to configure the unit for a mirrored outlet orientation. The required ambient temperature is at least 12 °C. The unit must be installed in such a way as to ensure sufficient space for removing the front panel, replacing filters, connecting the condensate drain to the waste system with a siphon odour trap, and carrying out periodic inspections of the electrical installation. If the unit is installed above a suspended ceiling, an access panel is required for maintenance.

Accessories

• SF-P 138 negative-pressure trap with odour seal
• KIT RF NASHIRA wireless control kit
• SPCM Lite M communication module

Instructions

If it is necessary to add pre-heating or post-heating to the unit, MBE-AFP 125/0.4, 125/0.8, 160/0.7 or 160/1.4, depending on the unit’s capacity range. Units with an enthalpy heat exchanger may operate without condensate drainage provided the specified conditions are met (outdoor temperature T > -4 °C, indoor temperature T < 22 °C, relative humidity < 60 %).

Information

A compact unit designed for flats or detached houses. It features simple installation and commissioning, the option of automatic operation and highly economical running.

Note

The NASHIRA 150 S E heat recovery unit is part of the ‘New Green Savings’ programme under code SVT37756.