RCE 2300

Bidirectional ventilation unit equipped with aluminium cross-flow high efficiency heat exchangers. Compliant with Directive 2009/125/CE (Eco Design), regulation n. 1253/2014.

How it works

Inside the unit are two fans, one which push supply air from outside to inside and the other which extract exhaust air from inside to outside. Both air streams flow through a heat exchanger without mixing together thus transferring heat from the warmer air stream to the cooler one.
This means that supply air gets preheated during winter and precooled in summer. Thanks to the motorized by-pass shutter it is also possible to reroute most of the supply air away from the heat exchanger, thus achieving “free-heating” in winter and “free-cooling” in summer.

Documentation

RCE full catalogue

FEATURES

All models have the following standard features:

  • Equipped with cross-flow high efficiency heat exchangers (minimum 73% with dry air and 80% with moist air), in accordance with Directive 2009/125/CE (Eco Design), regulation n. 1253/2014.
  • Equipped with high efficiency EC fans having the following specifications: 230 V, single phase, permanent magnets, brushless, direct current. Speed can be adjusted using a 0-10 V signal thanks to the built-in control unit. Forward bladed double inlet fans, installed in models of size 1600 and greater, already comply with both IE5 and ERP2020 efficiency limits, while backward bladed models are ErP 2015 compliant.
  • Each fan speed can be adjusted step by step and independently from the other.
  • Easy installation thanks to our “plug and play” system. Simply connect the onboard safety rotary switch to main electric line (230 V single-phase) and the remote controller to the unit using a RS485 cable.
  • Two temperature sensors, one for supply air and one for exaust air.
  • A by-pass motorized damper (IP 54 actuator) which can be controlled either manually or automatically.
  • Includes a static pressure sensor to monitor the status of the filters installed on the supply side.
  • Ready to be fitted with either a carbon dioxide or humidity sensor (both are optional).
  • Casing made of galvanized steel sheets for models up to size 5800, while for sizes 7200 and 7700 casing is made of aluminium Pentapost frames and pre-galvanised steel sandwich panels, each filled with 23mm thick polyurethane (40 kg/m3) for thermal and acoustic insulation.
  • Equipped with a condense discharge drop tank. A plastic, transparent tube extending for about 50 mm outside of the unit is connected to such drop tank, so that it is possible to connect the unit to an external condense discharge tube.
  • Acoustic insulation fire-retardant lining on the lower cover panel.
  • Circular connections with supply and exhaust ducts can be fixed on each side of the HRU, thus easing installation of the machines.
  • Air filters can be easily inspected and removed thanks to dedicated hatches built in the unit cover.
  • Air filters in accordance with RITE regulation where necessary (M6/F7/F8/F9 classes).
  • Equipped electric control board is IP 55 protected. All units can be mounted/installed outdoor when equipped with a cover.

DATA

DATA SHEET (pdf)

The following graphics are valid for the supply side.

Flow rate vs static pressure

RCE 2300 QHP

Each line shows static pressure drop depending on the installed filter.

Flow rate vs thermal efficiency

RCE 2300 Eta

  • Red line: T 0 [°C] / RH 0 [%] (outdoor), T 20 [°C] / RH 0 [%] (indoor)
  • Blue line: T 0 [°C] / RH 50 [%] (outdoor), T 20 [°C] / RH 50 [%] (indoor)
  • Light blue line: T -5 [°C] / RH 80 [%] (outdoor), T 20 [°C] / RH 50 [%] (indoor)

DIMENSIONS

Download pdf document listing all models dimensions.

RCE dimensions

Parameter Value unit
A1 1200 [mm]
A2 1200 [mm]
B 1105 [mm]
C 1260 [mm]
D 525 [mm]
∅E 315 [mm]
F 300 [mm]
G 600 [mm]
H 100 [mm]
L 1450 [mm]
M 610 [mm]
Weight (H) 124 [kg]
Weight (V) 135 [kg]

LAYOUTS

Download pdf document.

Horizontal (size 1600 and lower) Backward bladed models (size 1600 and lower) can have their inlet and outlet connections repositioned as the user see fit provided supply and exhaust air streams are not swapped (by-pass dumper always needs to be on the supply side).

RCE/H backward bladed setup

ALL VIEWS ARE INTENDED FROM BELOW (COVER SIDE)

Horizontal (size 2300 and greater) For size 2300 and beyond customers can request their product to be configured according to one of the following layouts.

RCE/H forward bladed setup

ALL VIEWS ARE INTENDED FROM BELOW (COVER SIDE)

Horizontal (size 1600 and lower) Backward bladed models (size 1600 and lower) can have their inlet and outlet connections repositioned as the user see fit provided supply and exhaust air streams are not swapped (by-pass dumper always needs to be on the supply side).

RCE/H backward bladed setup

Vertical (size 2300 and greater) For size 2300 and beyond customers can request their product to be configured according to one of the following layouts.

RCE/V forward bladed setup

ACCESSORIES

Download pdf document.

External heat exchanger box Heat exchanger external box
Electric heater Square shaped electric heater
Smoking area kit smoking area kit
External filters box Filters external box
Weathering cover Weathering cover

CONTROLLERS

All RCE units are equipped with a control board featuring a RS485 port fully compliant with the ModBUS protocol. There are two different ways to configure and manage a energy recovery unit, both requiring the use of the RS485 port:

  • connecting the control board to a remote controller.
  • connecting the control board to a BMS which is also compatibile with the ModBUS protocol

 

REMOTE CONTROLLERS

Standard version (default)

RCE standard remote

This remote controller features a backlit monochromatic LCD display and a led signalling when filters need to be changed (disabled if a static pressure sensor is not installed). A RS485 port is used to connect the heat recovery unit to the remote, which can be positioned up to 200 [m] away (or up to 1500 [m] on specific request).

“HMI AirMaster” (optional)

RCE HMI remote

This controller is equipped with a touch screen and it makes possible to manage up to 32 units at the same time (each unit can be configured independently from the others). Additional features, like weekly programming, are also available. Multiple ports are located on the back of the remote controller: a RS485 port, two USB ports and one RJ45 port for ethernet connection. This remote can be positioned up to 200 [m] away (or up to 1500 [m] on specific request) from the heat recovery unit.

OPERATING MODES

Regardeless of the remote connected, each unit can be configured to run according to one of the following two operating modes:

  • “Manual”, where the user can directly set both the supply and exhaust ventilators speed and command the motorized by-pass shutter (open and close). It is also possible to set one fan to operate at a fixed speed fraction of the other one. If a carbon dioxide sensor is installed, then read values are displayed on the remote.
  • “Automatic”, where both fans speed and by-pass are autonomously managed by the controller without any user intervention. Fans speed are automatically variated in order to maintain the level of carbon dioxide inside the room below the user defined set point. A user can however set the minimum fan speed inside a 4% – 20% value range. By-pass is closed/opened by comparing the indoor temperature value with the user defined set point.

ECODESIGN

Parameter Value unit
Nominal flow rate (qnom) 1780 [m3/h]
0.494 [m3/s]
Effective electric power input (We,tot) 1277 [W]
Internal specific fan power of ventilation components (SFPint) 1070 [W/(m3/s)]
Internal specific fan power of ventilation components, 2018 limit 1075 [W/(m3/s)]
Face velocity at design flow rate 1.7 [m/s]
Nominal external pressure (Δps,ext) 365 [Pa]
Internal pressure drop of ventilation components (Δps,int), supply 264 [Pa]
Internal pressure drop of ventilation components (Δps,int), exhaust 269 [Pa]
Thermal efficiency of heat recovery (ƞt, dry air, ΔT 20 [°C]) 74.6 [%]
Fans static efficiency (according to UE regulation n. 327/2011) 53.2 [%]
Casing sound power level (LWA) 86 [dB]
Maximum external leakage rate max 3.5 @ -400 Pa (EN 13141-7)
Maximum internal leakage rate max 5.5 @ +250 Pa (EN 13141-7)
  • Nominal values are referred to a configuration (“F7” line on the above chart) where fans operate at a working voltage of 10 [V] and two filters made of acrylic material are installed: a class F7 on the supply side and a class M6 on the exhaust side. The above “flow/pressure” graphic shows data taken from the supply side.
  • Bidirectional (UVB) non-residential ventilation unit (NRVU).
  • Heat recovery system: other (air/air).
  • Installed drive: continuous 10 V regulation.
  • Motorized by-pass facility can be controlled manually and automatically through remote display.
  • All units are equipped with two temperature sensors, one for inside air and one for outside air.
  • All units are equipped with a differential static pressure sensor. An appropriate indicator on the unit remote display will show the filters status once connected to the unit base controller.
  • Additional features and options may be available depending on the selected controller.