This guide establishes the installation sequence, interface specifications, and commissioning acceptance criteria for vhp-hood-disinfection-chambers equipment, with emphasis on electrical load calculations, HVAC differential pressure control integration, and interlock system handover documentation required by facilities management teams. The three critical procedure steps are: (1) verify electrical supply capacity and grounding resistance before energizing control systems, confirming 4.5 kW demand at 220V 50Hz with inrush current accommodation and equipotential bonding ≤0.1 Ω; (2) configure BMS differential pressure setpoints and cascade control logic against validated commissioning data, ensuring pressure decay does not exceed 0.1 bar per 15 minutes at 6 bar supply per ASTM E779; (3) complete interlock control logic handover with plain-language philosophy documentation, state transition diagrams, and on-site training sign-off before operational release. Each procedure includes specific prerequisite conditions, sequence-critical actions, and measurable acceptance thresholds aligned with ISO 14644-1:2024 and GB 50346-2011 standards.
This section establishes the electrical infrastructure prerequisites and protective device sizing methodology to prevent voltage sag-induced control system resets during equipment startup.
The vhp-hood-disinfection-chambers equipment nameplate specifies 4.5 kW running power at 220V 50Hz single-phase supply. Before cable installation begins, the electrical subcontractor must verify that the upstream distribution board protective device (circuit breaker or fuse) is rated for the combined demand of this equipment plus any existing loads on the same circuit, and that the protective device coordination chain (main breaker → feeder breaker → equipment breaker) follows IEC 60364-4-43 selectivity principles. The site electrical single-line diagram must be reviewed to confirm that the supply cable route does not pass through areas subject to mechanical damage, chemical exposure, or temperature extremes that would degrade insulation per IEC 60364-5-52.
The full-load current is calculated as: running power (4,500 W) ÷ supply voltage (220 V) = 20.5 A. However, the equipment contains solenoid valves for hydrogen peroxide injection and a circulation fan motor (EBM brand, pressure and flow adjustable per specification); solenoid valve inrush current typically reaches 3–5× holding current for 50–100 milliseconds, and motor inrush current reaches 5–7× full-load amperage for 1–3 seconds. The cable cross-section must be selected to limit voltage drop to ≤3% during the motor inrush transient (1–3 second duration). Using IEC 60364-5-52 methodology: assume 30 m cable run from distribution board to equipment location, copper conductor with resistivity 0.0175 Ω·mm²/m, voltage drop during inrush = (inrush current × 2 × cable length × resistivity) ÷ conductor cross-section. For 150 A inrush (7× 20.5 A) over 30 m: voltage drop = (150 × 2 × 30 × 0.0175) ÷ cross-section ≤ 6.6 V (3% of 220 V), requiring minimum 2.5 mm² copper conductor. The protective device (circuit breaker) must be rated at 1.25 × full-load current per IEC 60364-4-43, yielding 1.25 × 20.5 A = 25.6 A; select a 32 A Type C circuit breaker (characteristic curve C per IEC 60898-1, which tolerates inrush transients up to 5× rated current for up to 20 ms without nuisance tripping).
| Parameter | Specification | Standard Reference |
|---|---|---|
| Running Power | 4.5 kW at 220V 50Hz | Equipment nameplate |
| Full-Load Current | 20.5 A | IEC 60364-5-52 calculation |
| Inrush Current (Motor + Solenoid) | 150 A peak (7× FLA) | IEC 60364-4-43 |
| Cable Cross-Section (30 m run) | 2.5 mm² copper minimum | Voltage drop ≤3% criterion |
| Protective Device Rating | 32 A Type C circuit breaker | IEC 60898-1 |
| Voltage Drop Limit | ≤3% (6.6 V at 220V) | IEC 60364-5-52 |
After cable installation and termination, the electrical subcontractor must measure the no-load voltage at the equipment supply terminals using a calibrated digital multimeter (accuracy ±1%), record the baseline voltage (should be 220V ±10% per IEC 60038), then energize the equipment and record the minimum voltage observed during the first 5 seconds of operation (motor and solenoid inrush period). The voltage drop during inrush must not exceed 6.6 V (3% of 220V); if voltage drop exceeds this threshold, the cable cross-section must be increased or the supply point relocated closer to the distribution board. The protective device must not trip during three consecutive cold starts (equipment powered off for 10 minutes between each start). Acceptance sign-off requires: (1) voltage drop measurement record with timestamp and meter calibration date, (2) protective device trip log showing zero nuisance trips during commissioning, (3) cable schedule with actual installed cross-section and route marked on as-built drawing.
This section specifies the grounding architecture required to prevent control system signal corruption and ensure personnel safety during hydrogen peroxide sterilization cycles.
The vhp-hood-disinfection-chambers control system uses a Siemens PLC with Modbus RTU communication to the building management system; the control system requires a signal reference ground (SRG) that is isolated from the protective earth (PE) conductor to prevent ground loop currents that corrupt Modbus communication. Before bonding conductor installation, the electrical subcontractor must identify all metallic structures that require bonding: the equipment frame (316L stainless steel), the pass box door frame, the HEPA filter housing, the hydrogen peroxide storage tank enclosure, and any metal cable trays or conduit within 2 meters of the equipment. The site grounding system must be verified to have a grounding resistance ≤0.1 Ω per IEC 60364-5-54; if the site grounding resistance exceeds 0.1 Ω, a supplementary grounding electrode must be installed near the equipment location.
All metallic structures identified in the prerequisite phase must be bonded together using copper conductors sized per IEC 60364-5-54: for equipment frames and enclosures, use 6 mm² copper conductor; for cable trays and conduit, use 4 mm² copper conductor. The bonding conductors must be terminated using M8 stainless steel bolts with star washers to ensure low-contact resistance (target ≤0.01 Ω per connection per IEC 60364-5-54). The protective earth (PE) conductor from the distribution board must be connected to the equipment frame bonding point using a dedicated 6 mm² copper conductor; this PE conductor must not be shared with signal reference ground. The signal reference ground (SRG) for the Siemens PLC Modbus RTU interface must be established as a separate conductor routed in a dedicated conduit (not shared with power conductors) and connected to a star-point grounding block located within 0.5 meters of the PLC. The SRG conductor must be 2.5 mm² copper, and the star-point grounding block must be bonded to the main equipment frame bonding point using a 6 mm² copper conductor, but this bonding connection must include a ferrite toroid (impedance ≥100 Ω at 1 MHz) to attenuate high-frequency noise while maintaining DC continuity.
| Component | Conductor Size | Termination Method | Resistance Target |
|---|---|---|---|
| Equipment Frame Bonding | 6 mm² copper | M8 stainless bolt + star washer | ≤0.01 Ω per connection |
| Cable Tray Bonding | 4 mm² copper | M8 stainless bolt + star washer | ≤0.01 Ω per connection |
| Protective Earth (PE) | 6 mm² copper | Dedicated terminal lug, torque 25 Nm | ≤0.1 Ω total loop |
| Signal Reference Ground (SRG) | 2.5 mm² copper | Star-point block with ferrite toroid | ≤0.01 Ω at star point |
After bonding conductor installation, the electrical subcontractor must measure the grounding resistance using a calibrated earth resistance tester (accuracy ±5%, per IEC 61557-1) by injecting a 200 mA AC test current between the equipment frame bonding point and a remote grounding electrode located at least 20 meters away. The measured resistance must be ≤0.1 Ω; if resistance exceeds this threshold, the bonding connections must be cleaned (remove oxide using a wire brush) and re-torqued, or a supplementary grounding electrode must be installed. After grounding verification, the Modbus RTU communication link between the equipment control system and the building management system must be tested by transmitting 1,000 consecutive Modbus read requests (polling the equipment pressure sensor register every 2 seconds for approximately 33 minutes) and recording the number of communication errors. Acceptance requires zero Modbus communication errors during the 24-hour baseline test period; if errors occur, the SRG routing must be inspected for proximity to power conductors (minimum 0.3 m separation required per IEC 61000-6-2), and ferrite toroid impedance must be verified using a network analyzer.
This section establishes the control point architecture and data validation procedure to ensure BMS operator setpoint changes do not drive the equipment outside its validated operating envelope.
Before BMS integration begins, the equipment manufacturer must provide a commissioning report documenting the pressure decay test results per ASTM E779:2019 [ASTM E779:2019]. The report must specify: (1) the supply air flow rate (m³/h) at which the test was performed, (2) the exhaust air flow rate (m³/h), (3) the differential pressure setpoint (Pa) during the test, (4) the measured pressure decay rate (Pa per minute) over a 15-minute hold period at 6 bar supply pressure, and (5) the acceptance criterion (pressure decay ≤0.1 bar per 15 minutes). The BMS operator must be informed that the differential pressure setpoint is a validated parameter and that changes to this setpoint outside the range documented in the commissioning report will void the equipment's airtightness certification. The BMS integration engineer must establish three operator permission levels: (1) Management level (read-only access to all parameters, authority to change setpoints within ±5% of commissioned value), (2) Operations level (authority to start/stop cycles and acknowledge alarms, no setpoint modification), (3) Maintenance level (authority to modify setpoints within ±10% of commissioned value for troubleshooting, requires supervisor approval).
The equipment control system communicates via Modbus RTU (per IEC 61158-2:2019 [IEC 61158-2:2019]) using the following register map: holding register 100 = supply air flow rate (register value in units of 0.1 m³/h, so register value 500 = 50 m³/h); holding register 101 = exhaust air flow rate (same scaling); holding register 102 = differential pressure setpoint (register value in units of 1 Pa, so register value 100 = 100 Pa); input register 200 = measured differential pressure (same scaling as register 102); input register 201 = alarm setpoint for low pressure (register value in units of 1 Pa); input register 202 = alarm setpoint for high pressure (register value in units of 1 Pa). The BMS must be configured to read these registers every 5 seconds and log the values to a time-series database with 1-minute averaging. The differential pressure setpoint (register 102) must be constrained by the BMS software to remain within the range documented in the commissioning report; for example, if the commissioned setpoint is 100 Pa, the BMS must enforce a minimum of 95 Pa and maximum of 105 Pa (±5% for Management level operators). The alarm thresholds (registers 201 and 202) must be set to ±20% of the commissioned setpoint (e.g., if commissioned setpoint is 100 Pa, low alarm = 80 Pa, high alarm = 120 Pa).
| Modbus Register | Parameter | Data Type | Scaling Factor | Engineering Unit | Update Rate | BMS Constraint |
|---|---|---|---|---|---|---|
| 100 | Supply Air Flow | Integer | 0.1 | m³/h | 5 seconds | Read-only (commissioned value) |
| 101 | Exhaust Air Flow | Integer | 0.1 | m³/h | 5 seconds | Read-only (commissioned value) |
| 102 | Pressure Setpoint | Integer | 1 | Pa | 5 seconds | ±5% of commissioned value (Mgmt level) |
| 200 | Measured Pressure | Integer | 1 | Pa | 5 seconds | Trend log, 1-min average |
| 201 | Low Pressure Alarm | Integer | 1 | Pa | Static | −20% of setpoint |
| 202 | High Pressure Alarm | Integer | 1 | Pa | Static | +20% of setpoint |
After BMS integration, the controls engineer must perform a setpoint validation test: (1) configure the BMS to attempt a setpoint change to 110 Pa (assuming commissioned setpoint is 100 Pa, which exceeds the ±5% Management level limit), verify that the BMS software rejects the change and logs an error message with timestamp; (2) configure a valid setpoint change to 102 Pa (within ±5% limit), verify that the equipment accepts the change and the measured pressure (register 200) stabilizes within ±5 Pa of the new setpoint within 60 seconds; (3) enable the BMS trend log and record the measured differential pressure every 5 seconds for 24 hours, then calculate the mean pressure and standard deviation. Acceptance requires: (1) invalid setpoint changes rejected by BMS software with audit trail entry, (2) valid setpoint changes accepted and pressure stabilization achieved within 60 seconds, (3) 24-hour trend log showing mean pressure within ±2% of setpoint and standard deviation ≤5 Pa (indicating stable cascade control loop tuning per IEC 61131-3 control system design practices).
This section establishes the documentation and training requirements to enable facilities management to independently review, approve, and maintain the interlock control logic without ongoing engineering support.
The interlock control system for vhp-hood-disinfection-chambers prevents simultaneous opening of the front and rear pass box doors to maintain pressure differential and prevent cross-contamination. Before the handover training session, the controls engineer must prepare a plain-language control philosophy document (minimum 500 words, maximum 1,000 words) that describes the overall operation without reference to ladder diagrams or PLC code. The philosophy document must include: (1) a narrative description of the normal operating sequence (e.g., "Operator opens front door, removes sterilized items, closes front door; system verifies front door is fully closed and sealed before unlocking rear door"), (2) a description of alarm conditions and consequences (e.g., "If front door is opened while rear door is unlocked, the system immediately locks the rear door and sounds an audible alarm"), (3) a description of emergency procedures (e.g., "If the emergency stop button is pressed during a sterilization cycle, the cycle terminates, the hydrogen peroxide residue is purged for 30 minutes, and both doors remain locked until the purge cycle completes"). The controls engineer must also prepare a state transition diagram (using UML state machine notation or equivalent) showing all possible states (Idle, Front Door Open, Rear Door Open, Sterilization In Progress, Emergency Stop Active, Purge In Progress) and the transitions between states triggered by operator actions or sensor inputs.
The handover training session must be conducted on-site at the equipment location with a minimum of 2 hours duration and must include the facilities manager, maintenance technician, and operations supervisor. The training agenda must include: (1) 30-minute presentation of the control philosophy document and state transition diagram, (2) 30-minute walkthrough of the equipment control panel, identifying all pushbuttons, indicator lights, and emergency stop locations, (3) 30-minute demonstration of normal operating sequence and alarm response procedures, (4) 30-minute Q&A session and hands-on practice with the control interface. During the training, the controls engineer must provide a printed input/output signal list in table format, showing: signal name (e.g., "Front Door Closed Sensor"), signal type (digital input, digital output, analog input, analog output), signal description (e.g., "Magnetic reed switch, normally open, closes when door is fully seated"), PLC terminal address (e.g., "I0.0"), normal state (e.g., "Open circuit = door open, closed circuit = door closed"), and alarm state (e.g., "If signal remains open for >30 seconds after door close command, alarm activates"). The controls engineer must also provide an as-built wiring diagram showing all interlock circuit connections, cable routing, and terminal block assignments, with a cable schedule listing cable type, gauge, length, and route.
| Signal Name | Type | Description | Terminal Address | Normal State | Alarm State |
|---|---|---|---|---|---|
| Front Door Closed | DI | Magnetic reed switch | I0.0 | Closed = 1 | Open >30 sec = alarm |
| Rear Door Closed | DI | Magnetic reed switch | I0.1 | Closed = 1 | Open >30 sec = alarm |
| Front Door Unlock | DO | Solenoid valve | Q0.0 | De-energized = locked | Energized = unlocked |
| Rear Door Unlock | DO | Solenoid valve | Q0.1 | De-energized = locked | Energized = unlocked |
| Emergency Stop | DI | Pushbutton (NC contact) | I0.2 | Normal = 1 | Pressed = 0 |
| Cycle Complete | DO | Indicator light | Q0.2 | Off = 0 | On = 1 |
At the conclusion of the handover training session, the controls engineer must obtain signed acknowledgment from the facilities manager and maintenance technician confirming attendance and understanding of the control philosophy, state transition diagram, and alarm response procedures. The signed training attendance form must be retained in the equipment maintenance file. The facilities manager must be asked to verbally describe the response procedure for three specific alarm scenarios: (1) "Front door is opened while rear door is unlocked — what does the system do?", (2) "Emergency stop button is pressed during sterilization cycle — what happens next?", (3) "Rear door sensor fails and reports 'door open' continuously — how do you troubleshoot this?". Acceptance requires: (1) signed training attendance form with date and participant names, (2) documented Q&A responses showing facilities manager understanding of alarm logic, (3) as-built wiring diagram and input/output signal list filed in the equipment maintenance binder, (4) copy of control philosophy document and state transition diagram provided to facilities manager in both printed and electronic formats.
This section establishes the pre-acceptance inspection checklist and punch list resolution procedure to ensure all electrical and HVAC work is complete and verified before the equipment is released to operations.
Before electrical and HVAC installation work begins, the general contractor must issue an Inspection and Test Plan (ITP) document that specifies all hold points (witness points requiring client sign-off before work proceeds) and final acceptance criteria. The ITP must be reviewed and approved by the client (facilities management) and the equipment manufacturer's commissioning engineer before work starts. The ITP must identify the following hold points: (1) Foundation and anchor embedment verification (before equipment frame installation), (2) Electrical cable termination and insulation resistance testing (before energizing control systems), (3) HVAC ductwork connection and air flow measurement (before commissioning), (4) Interlock control system functional testing (before operational release). The ITP must specify that the electrical subcontractor is responsible for all work up to and including the main disconnect switch, and the HVAC subcontractor is responsible for all work up to and including the connection to the building exhaust duct. The boundary of responsibility between subcontractors must be clearly marked on the as-built drawings with a dashed line labeled "Subcontractor Interface."
Before requesting final acceptance sign-off, each subcontractor must perform a self-inspection using a pre-acceptance checklist. The electrical subcontractor's checklist must include: (1) all cable terminations verified tight using a calibrated torque wrench (power terminals torqued to 25 Nm per IEC 60364-5-52, control signal terminals torqued to 10 Nm), (2) all cable identification labels installed and legible (label format: cable number, source terminal, destination terminal, date installed), (3) all cable trays installed with covers and secured at 1.5 m intervals per SMACNA guidelines, (4) all conduit terminations sealed with appropriate bushings (plastic for non-metallic conduit, metal for metallic conduit), (5) earth resistance measured and recorded (target ≤0.1 Ω per IEC 60364-5-54), (6) insulation resistance tested using a 500 VDC megohmmeter (minimum 1 MΩ for power circuits, 0.5 MΩ for control circuits per IEC 60364-6-61). The HVAC subcontractor's checklist must include: (1) all ductwork connections sealed with mastic sealant and verified for air leakage using smoke test (no visible smoke leakage at joints), (2) all dampers installed and verified to move freely through full range of motion, (3) all filter frames installed with gaskets and verified for proper seating (visual inspection for gaps), (4) air flow measurement performed at supply and exhaust points using a calibrated anemometer (accuracy ±5%, per ASHRAE 111-2017 [ASHRAE 111-2017]), recorded flow rates compared to design specifications (±10% tolerance). If any item on the self-inspection checklist fails, the subcontractor must issue a punch list identifying the non-conforming item, the corrective action required, and the target completion date. The punch list must be reviewed by the general contractor and client before corrective work begins.
| Inspection Item | Acceptance Criterion | Test Method | Pass/Fail | Corrective Action |
|---|---|---|---|---|
| Cable Termination Torque | 25 Nm ±10% (power), 10 Nm ±10% (control) | Calibrated torque wrench | [ ] | Re-torque if loose |
| Cable Identification Labels | All cables labeled with source/destination/date | Visual inspection | [ ] | Install missing labels |
| Earth Resistance | ≤0.1 Ω | IEC 61557-1 earth tester | [ ] | Clean connections, re-measure |
| Insulation Resistance | ≥1 MΩ (power), ≥0.5 MΩ (control) | 500 VDC megohmmeter | [ ] | Investigate insulation fault |
| Ductwork Air Leakage | No visible smoke leakage at joints | Smoke test per ASHRAE 111 | [ ] | Seal joints with mastic |
| Air Flow Rate | ±10% of design specification | Calibrated anemometer | [ ] | Adjust damper position |
After all punch list items are resolved and re-inspected, the general contractor must obtain final acceptance sign-off from the electrical subcontractor, HVAC subcontractor, equipment manufacturer's commissioning engineer, and client facilities manager. The acceptance sign-off must be documented on a single-page form that includes: (1) date of final inspection, (2) list of all hold points and sign-off dates, (3) list of all punch list items and resolution dates, (4) statement that all work has been completed in accordance with the approved ITP and applicable standards, (5) signature and printed name of each subcontractor representative, commissioning engineer, and client representative. The signed acceptance form must be retained in the project file and a copy provided to each party. After final acceptance sign-off, the equipment is released to the client for operational handover; the client must be provided with: (1) as-built electrical single-line diagram and loop diagrams, (2) as-built HVAC ductwork schematic with measured air flow rates, (3) equipment operation and maintenance manual, (4) spare parts list with part numbers and recommended stock quantities, (5) maintenance schedule with recommended service intervals (e.g., HEPA filter replacement every 12 months, solenoid valve inspection every 6 months).
Q1: What is the immediate post-delivery inspection checklist for vhp-hood-disinfection-chambers equipment?
Upon delivery, verify that the equipment exterior shows no visible damage (dents, scratches, or corrosion on the 316L stainless steel frame), confirm that all documentation is present (operation manual, test certificates, warranty card), and perform a visual inspection of the pass box door seals (silicone gaskets must be intact with no cracks or compression set). Measure the door seal compression set using a durometer (Shore A hardness should be 40–60 per ASTM D2240); if compression set exceeds 30%, the seals must be replaced before commissioning.
Q2: What civil works and site preparation prerequisites must be completed before equipment installation begins?
The installation location must have a level concrete floor with load-bearing capacity ≥500 kg/m² (verified by structural engineer), anchor points for equipment frame bolting (M12 expansion anchors at 80 Nm torque per ASTM E488), electrical supply within 30 meters of equipment location (220V 50Hz, 32 A circuit breaker), compressed air supply at 0.6 MPa with oil-free air certification per ISO 8573-1:2010 [ISO 8573-1:2010] Class 2 (maximum 0.5 mg/m³ oil content), and HVAC ductwork connections to building supply and exhaust systems. The site must be free of vibration sources (machinery, traffic) within 10 meters of the equipment.
Q3: What differential pressure setpoint is recommended for biosafety containment zones housing vhp-hood-disinfection-chambers equipment?
The differential pressure setpoint depends on the biosafety level and room classification; for BSL-3 laboratories per GB 50346-2011, the recommended setpoint is 100–150 Pa negative pressure relative to adjacent corridors, with pressure decay not exceeding 0.1 bar per 15 minutes at 6 bar supply per ASTM E779. The exact setpoint must be validated during commissioning by measuring pressure decay over a 15-minute hold period; if decay exceeds 0.1 bar, the seal integrity must be investigated and corrected before operational release.
Q4: What field-based airtightness verification method can be used without specialized equipment?
A qualitative smoke test can be performed by introducing smoke (from a smoke pen or incense stick) around all door seals, pass box joints, and ductwork connections while the equipment is pressurized to 6 bar; any visible smoke movement indicates a leak location. However, this method is qualitative only and does not provide a quantitative pressure decay measurement; for quantitative verification, a pressure decay test per ASTM E779 must be performed using a calibrated differential pressure transducer and data logger.
Q5: What BMS integration communication protocol parameters must be configured for vhp-hood-disinfection-chambers equipment?
The equipment uses Modbus RTU per IEC 61158-2:2019 with the following parameters: baud rate 9,600 bits per second, data bits 8, stop bits 1, parity even, slave address 1 (configurable via equipment control panel menu). The BMS must be configured to poll the equipment every 5 seconds using Modbus function code 3 (read holding registers) to retrieve pressure setpoint and measured pressure values; communication timeout should be set to 10 seconds, and loss of communication should trigger a "BMS Link Failure" alarm on the equipment display.
Q6: What spare parts and maintenance intervals are recommended for vhp-hood-disinfection-chambers equipment?
Critical spare parts include: HEPA filter cartridges (Konvekta H14 grade, replacement every 12 months or when pressure drop exceeds 250 Pa), silicone door seals (replacement every 24 months or if compression set exceeds 30%), solenoid valve coils (replacement every 36 months or if valve fails to open/close), and hydrogen peroxide sensor probe (Vaisala brand, replacement every 24 months or if sensor reading drifts >10% from calibration). Maintenance intervals: monthly visual inspection of door seals and gaskets, quarterly calibration verification of pressure transducers and hydrogen peroxide sensor, annual professional service by manufacturer-authorized technician including solenoid valve inspection and control system software update.
ISO 8573-1:2010. Compressed air — Part 1: Contaminants and purity classes. International Organization for Standardization.
ISO 14644-1:2024. Cleanrooms and associated controlled environments — Part 1: Classification of air cleanliness by particle concentration. International Organization for Standardization.
IEC 60364-4-43:2019. Low-voltage electrical installations — Part 4-43: Protection for safety — Protection against overcurrent. International Electrotechnical Commission.
IEC 60364-5-52:2019. Low-voltage electrical installations — Part 5-52: Selection and erection of electrical equipment — Wiring systems. International Electrotechnical Commission.
IEC 60364-5-54:2019. Low-voltage electrical installations — Part 5-54: Selection and erection of electrical equipment — Earthing arrangements and protective conductors. International Electrotechnical Commission.
IEC 60898-1:2020. Automatic disconnectors for household and similar uses — Part 1: General rules. International Electrotechnical Commission.
IEC 61158-2:2019. Industrial communication networks — Fieldbus specifications — Part 2: Physical layer specification and service definition. International Electrotechnical Commission.
ASTM E779-19. Standard test method for determining air leakage rate by fan pressurization. ASTM International.
ASTM D2240-21. Standard test method for rubber property — Durometer hardness. ASTM International.
ASTM E488-21. Standard practice for strength tests of anchors in concrete and masonry elements. ASTM International.
ASHRAE 111-2017. Measurement, testing, adjusting, and balancing of building HVAC systems. American Society of Heating, Refrigerating and Air-Conditioning Engineers.
GB 50346-2011. Code for design of biosafety laboratory. Ministry of Housing and Urban-Rural Development, China.
IEC 61131-3:2013. Programmable controllers — Part 3: Programming languages. International Electrotechnical Commission.
The installation procedures, commissioning criteria, and technical specifications presented in this article are base