The Sentinel Apex is a Commercial Heat Recovery Demand Energy Recovery Ventilation (D-ERV) system designed for modern building management and control principles, offering high performance and efficiency. It is manufactured with a double-skinned construction, incorporating Aluzinc frames and panels that are acoustically and thermally treated with 90kg/m³ high-efficiency insulating foam (fire retardant to BS476 Part 7 Class 1 & Part 6 Class O). The unit's construction, rated IPX4, allows for internal and external mounting as standard, though a roof assembly is required for full external locations. The housing is compact, designed for concealed false ceiling applications, with top and bottom access panels sized for single-person maintenance.
Function Description:
The Sentinel Apex unit provides up to 93% EN308 heat recovery efficiency, low sound levels, and low specific fan powers. It features an advanced integrated control system with onboard control, in-room control, and App-based control for full functionality, commissioning, and monitoring. This control system can be integrated with Vent-Axia's range of wired or wireless sensors (CO2, humidity, and temperature) for precise indoor air quality control and monitoring. The unit incorporates the latest EC/DC external rotor motors, chosen for their low power consumption and low noise characteristics. These motors are dynamically balanced to DIN ISO 1940 Grade 6.3, with ball bearings greased for life and Class 'B' insulation (from -25°C to +60°C). All models include internal electronic overload protection and a soft start function.
An integral electric frost heater is included for frost protection of the heat recovery cell and filters down to -10°C, and can also be used as a top-up heater. The unit is equipped with an integral summer bypass facility designed to provide full bypass without impacting airflow or power consumption. Airflow and power consumption are tested in accordance with BS EN 5801. Sound data is derived from independent testing at Sound Research Laboratories in accordance with EN ISO 3741:2010, with published dB(A) figures representing free-field sound pressure levels at 3m with spherical propagation. An integral condensate tray and a quiet, high-quality pump allow for condensate removal via a 10mm pipe.
Important Technical Specifications:
- Airflow (nominal):
- HR06X: 650 m³/hr at 150 Pa
- HR10X: 1000 m³/hr at 150 Pa
- HR15X: 1500 m³/hr at 150 Pa
- HR21X: 2100 m³/hr at 150 Pa
- AC Voltage Input: 220-240 V ac (One, Two, or Three Single Phases)
- AC Frequency Input: 50/60 Hz nominal
- Supply Fuse or Cct Breaker: 16A (HR06X/HR10X), 32A (HR15X), 45A (HR21X)
- Rated Current: 12A (HR06X), 14A (HR10X), 29A (HR15X), 39A (HR21X)
- Rated Power: 2800W (HR06X), 3200W (HR10X), 6700W (HR15X), 8800W (HR21X)
- Total Fan Power (max.): 340W (HR06X/HR10X), 1000W (HR15X), 960W (HR21X)
- Total Frost Heater (max.): 2400W (HR06X), 2800W (HR10X), 5600W (HR15X), 7800W (HR21X)
- DC Voltage Output: 24 VDC, 0.3A (POWER OUT); 24Vdc, 0.1A (proportional 0-10V inputs); 5Vdc, 0.1A (digital SW inputs)
- Battery: CR2032 (for Main Controller PCB)
- IP Rating - Unit: IPX2 (IPX4 with Weather Accessories for outdoor mounting)
- Operating Temperature: -10°C to +40°C
- Operating Humidity: 0% to 95% (non-condensing)
- Storage Temperature: -10°C to +40°C
- Storage Humidity: 0% to 95% (non-condensing)
- Condensate Pump: 8 L/hr @ 8m head, 16 L/hr @ 2m head. 8m Max Head
- Filters: ISO ePM10 50% (M5) extract filter and ISOePM1 50% (F7) supply, complying with ISO16890.
Usage Features:
- Integrated Control System: Features an alphanumerical 2-line display with a 4-button keypad for fan status and basic commissioning setup, mounted within the control panel.
- Remote HMI: A remote HMI is included for in-room mounting, allowing local monitoring and commissioning.
- Mobile App Control: The Vent-Axia Connect App provides detailed commissioning, monitoring, and remote control via smart devices.
- Sensor Integration: Compatible with wired and wireless humidity, temperature, and CO2 sensors for proportional and switch control.
- Summer Bypass: Automatic bypass function for free cooling when indoor temperature exceeds ambient.
- Frost Protection: Integral electric frost heater protects the cell and filters down to -10°C.
- Flow Rate Settings: Four user-defined speeds (Low, Normal, Boost, Purge) adjustable via the App or advanced settings menu.
- User Overrides: Temporary boost or other mode overrides with adjustable durations.
- Scheduling: Ability to set daily schedules for different fan speeds.
- Filter Monitoring: Filter change warning and pressure sensors to detect when filters require replacement.
- Diagnostic Codes: Onboard HMI and App display diagnostic codes for troubleshooting.
Maintenance Features:
- Access Panels: Both side and bottom access panels are standard for normal access and maintenance. All panels are removable for access to and removal of the heat recovery cell and other components.
- Lockable Isolator: Fitted to the control panel to prevent accidental operation during maintenance.
- 6-Monthly Maintenance: Inspect the unit for build-up of dust, dirt, and condensation. Clean as required. Check filter change alarm status and replace filters if necessary.
- 12-Monthly Maintenance: Inspect heat exchanger cell, motors, condensate tray, and drain. Clean as required. Replace filters if necessary.
- 5-Yearly Maintenance: Replace the battery on the Main Controller PCB (CR2032) and adjust the clock.
- Panel Removal/Replacement: Detailed instructions for removing and replacing control box, side, top, and bottom panels.
- Filter Removal & Replacement: Procedures for side and bottom access filter replacement, including resetting the filter service indicator on the HMI.
- Motor Removal & Replacement: Instructions for roof-mounted and ceiling-mounted motor replacement, noting that this is not routine maintenance.
- Heat Exchanger Removal & Replacement: Procedures for roof-mounted and ceiling-mounted heat exchanger replacement, also not routine maintenance.
- Condensate Sensor Removal & Replacement: Instructions for replacing roof-mounted and ceiling-mounted condensate sensors.
- Condensate Pump Removal & Replacement: Steps for removing and replacing the condensate pump.
- Pre-Heater Removal & Replacement: Detailed guide for replacing the pre-heater assembly, including heating elements, overheat thermostats, and heater control PCB.
- Actuator Removal & Replacement: Instructions for replacing the damper actuator.
- Actuator PSU Removal & Replacement (HR21X ONLY): Specific steps for replacing the additional power supply for the larger actuator in HR21X models.
- Main Control PCB Removal & Replacement: Procedure for replacing the main control PCB, including transferring settings via a micro SD card.
- Pressure Sensor PCB Removal & Replacement: Instructions for replacing the pressure sensor PCBs located in the control box and air intakes.
- Heater Control PCB Removal & Replacement: Steps for replacing the heater control PCB.
- Overheat Thermostats Resetting, Removal & Replacement: Guide for resetting and replacing overheat thermostats.
- Thermistors Removal & Replacement: Instructions for replacing the unit's five thermistors.
- Troubleshooting: Comprehensive section with fault codes, warning codes, notification codes, and troubleshooting guides for power supply, airflow, temperature, and condensate issues.
- Spares List: A detailed list of spare parts for all Sentinel Apex models.
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