TPM 173/25 - Valid from 11.3.2025
¶ COMPACT AIR HANDLING UNIT MANDÍK TYPE-R
¶ PRELIMINARY VERSION 20250527
A brand-new air conditioning unit from Mandík a.s., featuring modern components and high-quality construction. Thanks to its compact dimensions and full factory testing and adjustment, it excels in ease of installation. The units are completely manufactured and certified in a unique frameless design and are intended for outdoor placement. The unit boasts high resistance to weather conditions.
The primary source of heating/cooling is a heat pump. As an additional source, a water heater/cooler or an electric heater can be installed. Various configurations are offered, ranging from fully recirculating units to those allowing mixing and heat recovery. The electrical switchboard is integrated into the unit's body.
This is a fixed-size series covering capacities from 20 to 150 kW for cooling/heating and air performance from 4,000 to 30,000 m³/h. Standard delivery is plug & play, including an integrated control system and full factory testing.
¶ 1. GENERAL INFORMATION
This manual uses graphic symbols and warnings described in General.
¶ TECHNICAL PARAMETERS - R454C
| Body-A | ||||
|---|---|---|---|---|
| Nominal Airflow | [m³/h] | 4000 | 6000 | 8000 |
| Heating Capacity (1) | [kW] | 20 | 30 | 40 |
| Cooling Capacity (2) | [kW] | 20 | 30 | 35 |
| Electric Heater | [kW] | 18 | 18 | 18 |
| Water Heater (80/60°C) | [kW] | up to 60 | up to 60 | up to 60 |
| Number of Compressors (Type) | [pcs] | 1 (Inverter) | 1 (Inverter) | 1 (Inverter) |
| Number of Refrigerant Circuits | [pcs] | 1 | 1 | 1 |
| Refrigerant | [-] | R454C (GWP - 148) | ||
| COP (1) | [-] | 3.49 | 3.40 | 3.02 |
| EER (1) | [-] | 4.01 | 3.59 | 3.08 |
| Dimensions (HxWxD) | [mm] | 2430x2200x2648 | ||
| Weight | [kg] | 1233 | 1248 | 1248 |
| Sound Power Level from Casing to External Space (Cooling Mode) LwA | [dBA] | 92 | 92 | 92 |
| Sound Power Level at Discharge to Internal Space LwA | [dBA] | 92 | 95 | 95 |
| Sound Power Level at Intake and Discharge to External Space (Without Cooling System) LwA | [dBA] | 94 | 94 | 94 |
| Supply Fans – EC (Radial with Free Impeller) | [pcs] | 1 | 2 | 2 |
| Exhaust Fans – EC (Radial with Free Impeller) | [pcs] | 1 | 1 | 1 |
| External Fans – EC (Axial) | [pcs] | 1 | 1 | 1 |
| Filtration Classes | [-] | G3 / G4 / M5 / F7 / F9 | ||
| Filters – First Stage | [-] | 2+2 pcs (592x592x48) | ||
| Filters – Second Stage | [-] | 6 pcs (592x592x48) | ||
| Sensors | [-] | Temperature / Humidity / CO₂ / Smoke | ||
| Communication | [-] | ModBus / Analog / (BACnet) | ||
| Control System | [-] | MaR / Cloud / Room Thermostat / ModBus | ||
| Power Supply | [V/Ph/Hz] | 400/3/50 | ||
| Recommended Circuit Protection | [A] | 63 |
| Body-B | |||||
|---|---|---|---|---|---|
| Nominal Airflow | [m³/h] | 10,000 | 12,000 | 14,000 | 16,000 |
| Heating Capacity (1) | [kW] | 50 | 60 | 70 | 80 |
| Cooling Capacity (2) | [kW] | 50 | 55 | 60 | 65 |
| Electric Heater | [kW] | 30 | 30 | 30 | 30 |
| Water Heater (80/60°C) | [kW] | up to 100 | up to 100 | up to 100 | up to 100 |
| Number of Compressors (Type) | [pcs] | 2 (Inverter) | 2 (Inverter) | 2 (Inverter) | 2 (Inverter) |
| Number of Refrigerant Circuits | [pcs] | 2 | 2 | 2 | 2 |
| Refrigerant | [-] | R454C (GWP - 148) | |||
| COP (1) | [-] | 3.39 | 3.24 | 3.08 | 2.97 |
| EER (1) | [-] | 3.73 | 3.50 | 3.29 | 3.05 |
| Dimensions (HxWxD) | [mm] | 2430x2200x3240 | |||
| Weight | [kg] | 1680 | 1680 | 1698 | 1698 |
| Sound Power Level from Casing to External Space (Cooling Mode) LwA | [dBA] | 95 | 95 | 95 | 95 |
| Sound Power Level at Discharge to Internal Space LwA | [dBA] | 97 | 97 | 98 | 98 |
| Sound Power Level at Intake and Discharge to External Space (Without Cooling System) LwA | [dBA] | 97 | 97 | 97 | 97 |
| Supply Fans – EC (Radial with Free Impeller) | [pcs] | 3 | 3 | 4 | 4 |
| Exhaust Fans – EC (Radial with Free Impeller) | [pcs] | 2 | 2 | 2 | 2 |
| External Fans – EC (Axial) | [pcs] | 2 | 2 | 2 | 2 |
| Filtration Classes | [-] | G3 / G4 / M5 / F7 / F9 | |||
| Filters – First Stage | [-] | 3+3 pcs (592x592x48) | |||
| Filters – Second Stage | [-] | 9 pcs (592x592x48) | |||
| Sensors | [-] | Temperature / Humidity / CO₂ / Smoke | |||
| Communication | [-] | ModBus / Analog / (BACnet) | |||
| Control System | [-] | MaR / Cloud / Room Thermostat / ModBus | |||
| Power Supply | [V/Ph/Hz] | 400/3/50 | |||
| Recommended Circuit Protection | [A] | 100 |
| Body-C | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Airflow | [m³/h] | 18,000 | 20,000 | 22,000 | 24,000 | 26,000 | 28,000 | 30,000 |
| Heating Capacity (1) | [kW] | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
| Cooling Capacity (2) | [kW] | 90 | 95 | 100 | 110 | 130 | 135 | 140 |
| Electric Heater | [kW] | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Water Heater (80/60°C) | [kW] | up to 160 | up to 160 | up to 160 | up to 160 | up to 160 | up to 160 | up to 160 |
| Number of Compressors (Type) | [pcs] | 3 (2x Inverter, 1x ON/OFF) | 3 (2x Inverter, 1x ON/OFF) | 3 (2x Inverter, 1x ON/OFF) | 3 (2x Inverter, 1x ON/OFF) | 4 (2x Inverter, 2x ON/OFF) | 4 (2x Inverter, 2x ON/OFF) | 4 (2x Inverter, 2x ON/OFF) |
| Number of Refrigerant Circuits | [pcs] | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Refrigerant | [-] | R454C (GWP - 148) | ||||||
| COP (1) | [-] | 3.44 | 3.29 | 3.10 | 3.09 | 3.23 | 3.25 | 3.07 |
| EER (1) | [-] | 3.32 | 3.20 | 3.08 | 2.97 | 3.04 | 2.99 | 2.97 |
| Dimensions (HxWxD) | [mm] | 2670x2200x5180 | ||||||
| Weight | [kg] | 2602 | 2602 | 2602 | 2672 | 2712 | 2712 | 2712 |
| Sound Power Level from Casing to External Space (Cooling Mode) LwA | [dBA] | 96 | 96 | 96 | 96 | 96 | 96 | 96 |
| Sound Power Level at Discharge to Internal Space LwA | [dBA] | 102 | 102 | 102 | 104 | 104 | 104 | 104 |
| Sound Power Level at Intake and Discharge to External Space (Without Cooling System) LwA | [dBA] | 102 | 102 | 102 | 102 | 102 | 102 | 102 |
| Supply Fans – EC (Radial with Free Impeller) | [pcs] | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| Exhaust Fans – EC (Radial with Free Impeller) | [pcs] | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| External Fans – EC (Axial) | [pcs] | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
| Filtration Classes | [-] | G3 / G4 / M5 / F7 / F9 | ||||||
| Filters – First Stage | [-] | 4+4 pcs (592x592x48), 4+4 pcs (300x592x48) | ||||||
| Filters – Second Stage | [-] | 12 pcs (592x592x48), 4 pcs (300x592x48) | ||||||
| Sensors | [-] | Temperature / Humidity / CO₂ / Smoke | ||||||
| Communication | [-] | ModBus / Analog / (BACnet) | ||||||
| Control System | [-] | MaR / Cloud / Room Thermostat / ModBus | ||||||
| Power Supply | [V/Ph/Hz] | 400/3/50 | ||||||
| Recommended Circuit Protection | [A] | 250 |
(1) - according to EN 14511/2023
¶ TECHNICAL PARAMETERS - R454B
| Body - A | Body - B | Body - C | |||
|---|---|---|---|---|---|
| Nominal Airflow | [m3/h] | 8,000 | 16,000 | 24,000 | 30,000 |
| Heating Capacity (1) | [kW] | 40 | 80 | 120 | 150 |
| Cooling Capacity (2) | [kW] | 35 | 65 | 110 | 140 |
| Electric Heater | [kW] | 18 | 30 | 60 | |
| Water Heater (80/60°C) | [kW] | až 60 | až 100 | až 160 | |
| Number of Compressors (Type) | [pcs] | 1 (ON/OFF) | 2 (ON/OFF) | 3 (ON/OFF) | 4 (ON/OFF) |
| Number of Refrigerant Circuits | [pcs] | 1 | 2 | ||
| Refrigerant | [-] | R454B (GWP - 466) | |||
| COP (1) | [-] | 3,02 | 2,97 | 3,09 | 3,07 |
| EER (1) | [-] | 3,08 | 3,05 | 2,97 | 2,97 |
| Dimensions (HxWxD) | [mm] | 2430x2200x2648 | 2430x2200x3240 | 2670x2200x5180 | |
| Weight | [kg] | 1248 | 1698 | 2672 | 2712 |
| Sound Power Level from Casing to External Space (Cooling Mode) LwA | [dBA] | 92 | 95 | 96 | |
| Sound Power Level at Discharge to Internal Space LwA | [dBA] | 95 | 98 | 104 | |
| Supply Fans – EC (Radial with Free Impeller) | [dBA] | 94 | 97 | 102 | |
| Supply Fans – EC (Radial with Free Impeller) | [pcs] | 2 | 4 | ||
| Exhaust Fans – EC (Radial with Free Impeller) | [pcs] | 1 | 2 | 3 | |
| External Fans – EC (Axial) | [pcs] | 1 | 2 | 3 | 4 |
| Filtration Classes | [-] | G3 / G4 / M5 / F7 / F9 | |||
| Filters – First Stage | [-] | 2+2 pcs (592x592x48) | 3+3 pcs (592x592x48) | 4+4 pcs (592x592x48), 4+4 pcs (300x592x48) | |
| Filters – Second Stage | [-] | 6 pcs (592x592x48) | 9 pcs (592x592x48) | 12 pcs (592x592x48), 4 pcs (300x592x48) | |
| Sensors | [-] | Temperature / Humidity / CO₂ / Smoke | |||
| Communication | [-] | ModBus / Analog / (BACnet) | |||
| Control System | [-] | MaR / Cloud / Room Thermostat / ModBus | |||
| Power Supply | [V/Ph/Hz] | 400/3/50 | |||
| Recommended Circuit Protection | [A] | 63 | 100 | 250 |
(1) - according to EN 14511/2023
¶ SAFETY
Please refer to Safety.
The unit must be installed in a controlled-access area.
The rooftop units comply with the following safety definitions and are marked with the CE label where applicable (see the EU Declaration for more details):
- 2014/68/EU Pressure Equipment Directive
- EN-378-2016
- 2006/42/EC Machinery Directive
Directive 2014/35/EU on low voltage considered within the Machinery Directive.- EN-60204-1
- 2014/30/EU Electromagnetic Compatibility (EMC) Directive
- EN-61000-6-1/-2/-3/-4
- 2014/53/EU Radio Equipment Directive
Applicable if equipped with a GSM router. - EU 517/2014 F-Gas Regulation
- 2009/125/EC Ecodesign Directive
- EU 2016/2281 Rooftop units
- 2011/65/EU (2015/863/EU) RoHS Directive
Restriction of hazardous substances
¶ PED DIRECTIVE
For equipment subject to the Pressure Equipment Directive (see EU Declaration of Conformity).
Warning:
- Safety pressure switches: These components are essential to ensure that the system remains within permissible operating limits. Always check the correctness of all electrical connections before switching on the installation. Perform a test to verify that the power supply shuts off when the pressure switch reaches the set value.
- Installation in hazardous zones: In areas prone to natural disasters such as earthquakes, storms, tornadoes, floods, or tidal waves, the installer or operator must ensure that necessary equipment is available according to applicable standards and regulations, as our units are not designed for operation in such conditions without appropriate measures.
- Fire resistance: The equipment is not designed to withstand fire. The installation site must comply with applicable fire protection standards.
- Corrosive atmosphere: If exposed to corrosive influences or products, the installer or operator must take necessary measures to protect the equipment from damage and ensure appropriate corrosion protection.
- Pipe support: Ensure a sufficient number of supports for the pipes according to their size and weight under operating conditions, and design the piping to prevent water hammer effects.
- Safety measures for the cooling circuit: Before performing any work on the cooling circuit, the nitrogen pressure must be released, as our units are delivered with nitrogen charge (for units not factory-filled with refrigerant).
- Professional qualification: Installation and maintenance of these machines must be carried out by personnel qualified to work on refrigeration equipment.
- Safety regulations: All interventions must be performed in accordance with applicable safety regulations (e.g., EN 378) and recommendations provided on labels and in manuals supplied with the unit. Unauthorized access must be prevented.
- Surface temperature hazard: Any piping or other cooling circuit components that pose a risk due to their surface temperature must be insulated or marked.
¶ FLAMMABLE GASES
The unit is factory-filled with refrigerant R454C/R454B, classified as mildly flammable (A2L). A2L / A2 / A3 gases are subject to stricter safety regulations than A1 gases. Below is a summary of standards and recommendations based on EN 378 and EN 60079-10-1, including tests and simulations related to flammability risks.
¶ Flammability Classes
- A1: No flame propagation
- A2L: Mildly flammable
- A2: Flammable
- A3: Highly flammable
¶ Labeling of Units with Flammable Gas
A label with the A2L logo on the product indicates the presence of mildly flammable refrigerant. It also appears on maintenance connection points.
¶ Transport of Units with Flammable Gas
- Equipment filled with A2L refrigerant must comply with ADR regulations, specifically UN 3358.
- Transport of UN3358 is prohibited in the Eurotunnel and tunnels of category D and E.
- The transport document must state: UN3358 Refrigerant units 2.1.
- If more than 12 kg of refrigerant is present, the total amount must be specified.
¶ Acceptance Inspection for Flammable Gas
- Do not approach the container with an open flame or other ignition sources.
- Store the product away from potential ignition sources.
¶ Safety Zone
- The product is hermetically sealed and marked with the CE label.
- Proper installation and maintenance eliminate the formation of ATEX zones.
¶ Installation of Units with Flammable Gas
- Installation in ATEX zones is prohibited.
- Ventilation openings, ignition sources, or other heat sources must not be installed near the unit, in accordance with EN 378.
¶ Power Supply of the Unit
- Before switching on the power, verify refrigerant leak detection using appropriate equipment.
¶ Electrical Wiring
- All cable entries must be tightly sealed to prevent water ingress and short circuits.
¶ Maintenance and Repairs
- Before starting work, perform leak detection using appropriate equipment.
- Do not use open flames or other ignition sources near units filled with refrigerant.
- When working with R454C/R454B, follow specific precautions, such as using appropriate tools and protective equipment.
¶ 2. UNIT IDENTIFICATION
Related common documents can be found in Related Documents.
Each unit is equipped with a nameplate containing identification details for each piece and a description of its main features.
Each unit is equipped with an identification label containing the main characteristics of the refrigeration circuit.
¶ Unit Identification Label
RTU_A-B-C-D-E-F-G-H-I-J-K
| Code | Description | Options | Details |
|---|---|---|---|
| A | Nominal Power | 020/030/040/050/060/070/080/090/100/110/120/130/140/150 | Power in kW |
| B | Configuration | C/R | Cooling only / Reversible |
| C | Airflow Type | C/F/M | Circulating / Fresh air only / Fresh air mixing option |
| D | Exhaust Fan | NA/EF | None / Yes |
| E | Secondary Heat Exchanger | NA/EH/WH | None / Electric heater / Water heater |
| F | First-Stage Filtration | 1G3N/1G4N/1G3M/1G4M | G3 filtration / G4 filtration / G3 filtration + status monitoring / G4 filtration + status monitoring |
| G | Second-Stage Filtration | 2F5N/2F7N/2F5M/2F7M | F5 filtration / F7 filtration / F5 filtration + status monitoring / F7 filtration + status monitoring |
| H | Heat Recovery | NA/IHR | None / Refrigerant circuit heat recovery |
| I | ODA Sensor | 0/1/2/3 | None / Temperature / Temperature + Humidity / Temperature + Humidity + CO₂ |
| J | SUP Sensor | 0/1/2/3 | None / Temperature / Temperature + Humidity / Temperature + Humidity + CO₂ |
| K | ETA Sensor | 0/1/2/3 | None / Temperature / Temperature + Humidity / Temperature + Humidity + CO₂ |
Example of unit designation:
RTU_060-R-M-EF-EH-1G4N-2F7N-IHR-1-1-1
- Nominal capacity of 60 kW
- Reversible design
- Allows fresh air mixing
- Exhaust fan
- Additional electric heater
- First-stage filtration class G4
- Second-stage filtration class F7
- Heat recovery via heat pump circuit
- ODA - temperature only
- SUP - temperature only
- ETA - temperature only
¶ Unit Dimensions
The unit is designed in a fixed dimensional series, as shown in the table below.
¶ Unit Specifications
| Unit | [-] | A | B | C |
|---|---|---|---|---|
| Nominal Airflow | [m³/h] | 4000-8000 | 10,000-16,000 | 18,000-30,000 |
| Nominal Heating Power | [kW] | 20-40 | 50-80 | 90-150 |
| Unit Dimensions | ||||
| Width | [mm] | 2200 | 2200 | 2200 |
| Length | [mm] | 2648 | 3240 | 5180 |
| Height | [mm] | 2430 | 2430 | 2670 |
| Weight | [kg] | 1248 | 1698 | 2712 |
¶ Connection Dimensions
Fig. 4 shows the floor plan view of the RTU unit with dimensioned connection sizes.
| Unit | [-] | A | B | C |
|---|---|---|---|---|
| A | [mm] | 2200 | 2200 | 2200 |
| B | [mm] | 2648 | 3240 | 5180 |
| C | [mm] | 1288 | 1880 | 2480 |
| D | [mm] | 900 | 1180 | 2000 |
| E | [mm] | 425 | 425 | 425 |
| F | [mm] | 900 | 1280 | 1800 |
| G | [mm] | 435 | 435 | 450 |
| H | [mm] | 194 | 350 | 240 |
| I | [mm] | 141 | 141 | 125 |
| J | [mm] | 194 | 250 | 340 |
| K | [mm] | 125 | 125 | 125 |
¶ 3. HANDLING, TRANSPORT, AND STORAGE
- Units are delivered in compact blocks.
- Units are packaged in plastic foil.
- Units are designed for handling with forklift trucks, pallet trucks, or cranes.
- When using a forklift or pallet truck, the forks must always be positioned under the entire chamber.
- The unit can only be transported in a horizontal working position.
WARNING: When handling suspended equipment, always maintain a safe distance from the load and never stand underneath it. Keep acceleration and lifting speed within safe limits. Never leave the equipment suspended longer than absolutely necessary!
¶ Permitted Handling
¶ Transport and Handling with a Pallet Truck or Forklift
The unit is designed for handling with forklift or pallet truck forks. When using a forklift, the forks must always be positioned under the entire unit.
¶ Transport and Handling of the Chamber with a Crane
The unit may only be lifted using the lifting eyes in the unit frame (Fig. 7: "A"). The process for extending the crane lifting eyes from the frame is described below.
To extend the crane lifting eye from the frame, first completely unscrew bolt "B", then loosen bolt "C". At this point, the eye can be extended from the frame in the direction of the arrow. Then, bolt "B" must be screwed into position "A", and both bolts must be tightened using a 17mm wrench.
After positioning the unit in its final location, it is recommended for safety reasons to retract the crane lifting eyes back into the frame. The retraction process follows the reverse order of the extension process.
¶ 4. ASSEMBLY AND INSTALLATION
General instructions for assembly and installation can be found in General Assembly and Installation.
- Depending on the type and size of the unit, sufficient free space must be ensured around the unit for unobstructed door opening—determined by the specific unit size.
- A walkable surface within the protective zone around the unit is required for service interventions.
- Maximum horizontal deviation of the units must be maintained within (0.5% ~ 0.3°).
- The minimum distance of flammable objects from the unit is 200 mm.
¶ PLACING THE UNIT ON A ROOF FRAME
The frame is designed for mounting the unit on the building's roof. Independently adjustable legs allow the frame to be leveled horizontally, regardless of the roof's slope and orientation.
| A – Roof frame for the RTU unit |
| B – Air duct flanges |
| C – Frame leveling legs |
| D – Crane lifting eyes for handling the frame |
- Check the positioning, slope, and stability of the frame.
- Verify the protective service zone around the unit.
- Inspect the integrity of the sealing on the contact surfaces of the air duct flanges (marked as B).
- After placing the unit, retract the crane lifting eyes using a 17mm wrench.
- The frame is made of a double-layer material with 50mm insulation thickness.
- After leveling the slope on the roof, the frame must be anchored to the building's structural support.
- Around the entire perimeter of the frame, cover plates (included in the delivery) must be attached using self-tapping screws at a maximum spacing of 200mm.
- Finally, properly install the vapor barrier foil, thermal insulation, and waterproofing foil.
Here is the English translation of your text:
¶ PLACING THE UNIT ON A FREESTANDING FRAME
| A – RTU Unit |
| B – Freestanding Frame Structure |
| C – Air Duct System (Supply/Exhaust) |
- Check the positioning, slope, and stability of the frame.
- Verify the protective service zone around the unit.
- Lift the unit using a forklift and place it onto the pre-prepared frame.
- The frame structure must be designed considering the weight of the specific unit.
CONNECTING THE UNIT TO THE HVAC DUCTWORK
DESCRIPTION OF SUPPLY/EXHAUST CONNECTIONS TO THE UNIT
| SUP – Supply to the room | ETA – Exhaust from the room |
| EHA – Waste air to the atmosphere | ODA – Fresh outdoor air |
CONDENSATE DRAIN TRAP CONNECTION
Correct Siphon Height Adjustment Based on Pressure Value
| A: Cleaning Insert |
Can be used for vacuum up to 2300 Pa.
H = P / 10 (P = pressure value specified in the unit's technical specifications [Pa])
| A: Siphon Connection |
CONNECTING THE WATER HEATER/COOLER
Water for the water heat exchangers must not contain impurities that cause clogging, especially corrosion products from steel and cast iron components. To prevent the formation of these impurities, chemically treated water must be used according to ČSN 07 7401 standards.
- pH value: 7 – 9
- Water hardness: 1.0 mval/l
- Chloride content: max. 30 mg/l
- Phosphate content (converted to P₂O₅): min. 15 mg/l
ELECTRICAL CONNECTION
The main power supply for the unit is typically provided by the construction site. After routing the power cable through the gland in the electrical cabinet, it must be connected to the terminals. The main switch is located on the cabinet door, which can only be opened after turning off the main switch.
To connect the included peripherals to the terminal block, use the designated screw glands located near the power cable entry.
¶ 5. COMMISSIONING
¶ UNIT INSPECTION BEFORE FIRST START-UP
LIST OF SERVICE TASKS BEFORE STARTING THE MANDÍK AIR CONDITIONING UNIT
| __________________ | __________________ | ||
|---|---|---|---|
| Order number: | User: | ||
| Date: | Commissioning technician: | ||
| Project name: | |||
| Serial number: | |||
| Address: | |||
| Date of first start-up: | Position: |
GENERAL UNIT TASKS
| Task number | Description of service task | Task completion | Measured or set value * | Notes | |
|---|---|---|---|---|---|
| YES | NO | ||||
| 1.01. | Check correct unit placement according to installation instructions. | ||||
| 1.02. | Check cleanliness of the internal chamber—no foreign objects or construction debris. | ||||
| 1.03. | Check connection of HVAC ductwork to damping inserts according to installation instructions. | ||||
| 1.04. | Check readability and cleanliness of manufacturing and safety labels. Clean if necessary. | ||||
| 1.05. | Check unit closure—doors, service panels. | ||||
| 1.06. | Check for external or internal mechanical damage to the unit. | ||||
| 1.07. | Check overall unit tightness—visually (doors, service panels, fixed panels, etc.). | ||||
| 1.08. | Check cleanliness and integrity of filter inserts. | ||||
| 1.09. | Check free rotation of fan impellers. | ||||
| 1.10. | Check tightness of active fluid piping/mixing node connection to the heat exchanger (if a water heat exchanger is installed). | ||||
| 1.11. | Check air venting of the heat exchanger (if a water heat exchanger is installed). |
GENERAL UNIT TASKS – ELECTRICAL & CONTROL SYSTEMS
| Task number | Description of service task | Task completion | Measured or set value * | Notes | |
|---|---|---|---|---|---|
| YES | NO | ||||
| 1.12. | Check connection and status of main power supply. | ||||
| 1.13. | Check connection and status of peripherals—external sensors, remote control, etc. | ||||
| 1.14. | Check functionality of safety pressure sensors in the refrigerant circuit. | ||||
| 1.15. | |||||
| 1.16. | |||||
| 1.17. | |||||
| 1.18. | |||||
| 1.19. | |||||
| 1.20. | |||||
| 1.21. |
SPECIAL TASKS:
| Task number | Description of service task | Task completion | Measured or set value * | Notes | |
|---|---|---|---|---|---|
| YES | NO | ||||
| 1.22. | Check tightness of the refrigerant circuit. | ||||
| 1.23. | |||||
| 1.24. | |||||
| 1.25. |
| In....................on.................... | |||
| ______________________ | ______________________ | ||
| Stamp and signature of service technician: | Stamp and signature of authorized representative of the equipment operator | ||
| ______________________ | ______________________ | ||
| Surname and service technician number in block letters | Surname of authorized representative of the operator in block letters |
Record the value only if a measurement is required.
¶ COMMISSIONING
Commissioning for RTU can be found in RTU Commissioning Tasks.
During the first start-up, the following checks must be performed:
General Unit Checks:
- Ensure no unusual mechanical noises are heard.
- Check for excessive vibration of the unit.
- Verify the tightness of the unit chamber and all additional penetrations through the unit casing.
- Confirm the proper functioning of all dampers.
Electric Heater:
- The airflow velocity must not drop below 1 m/s.
Water Cooler/Heater:
- Check the tightness of the hydraulic system connection to the heat exchanger.
Heat Pump:
- Ensure no unusual mechanical noises are heard.
- Check for excessive vibration of the compressors.
- Verify the tightness of the refrigerant circuit.
- Confirm the functionality of safety components.
¶ FIRST START-UP OF THE UNIT
¶ COMMISSIONING PROCEDURE
- Power connection (3x400V 50Hz)
- Turn on the main switch – rotate to the "ON" position
- Wait at least 2 hours (to heat the compressor crankcase)
- Manually activate cooling mode, available at: Measurement and Control System
- Manually activate heating mode, available at: Measurement and Control System
- Turn off the unit
- Set the time program, available at: Measurement and Control System
- Activate the time program or a specific mode, available at: Measurement and Control System
¶ OPERATOR TRAINING AND UNIT HANDOVER
During training, the following steps must be followed:
- Train the user on unit operation and maintenance
- Record the training session. A copy must be sent to MANDÍK, a.s. or to the service department email service@mandik.cz
- Train the user on system control and parameter settings
- Record the system control training session. A copy must be sent to MANDÍK, a.s. or to the service department email service@mandik.cz
- Record the unit regulation session. A copy must be sent to MANDÍK, a.s. or to the service department email service@mandik.cz
- Hand over the unit to the user
- Record the unit handover session. A copy must be sent to MANDÍK, a.s. or to the service department email service@mandik.cz
- Create an operational log for the unit
- Provide documentation to the user (manufacturer manuals, electrical installation inspection reports, training protocol for operation and maintenance, system control training protocol, unit handover protocol, unit regulation protocol).
¶ 6. OPERATION AND MAINTENANCE
¶ Instructions
General instructions for operation and maintenance can be found at General Operation and Maintenance.
¶ Maintenance
Common service and maintenance intervals can be found at Common Service and Maintenance Intervals.
¶ Unit Description
COMPONENTS
| SUP – Supply air to the room | ETA – Exhaust air from the room |
| EHA – Waste air to the atmosphere | ODA – Fresh outdoor air |
| A: Main electrical cabinet | B: Electric heater or water cooler/heater |
| C: Internal refrigerant heat exchanger | D: Second-stage filtration |
| E: Fresh air filter + damper | F: Exhaust air damper |
| G: Exhaust fans | H: Recirculated air filter + damper |
| I: Condensate tray | J: Auxiliary electrical cabinet for refrigerant section |
| K: Supply fans | L: Axial fans for outdoor refrigerant heat exchangers |
| M: Refrigerant circuit machine room | N: External refrigerant heat exchanger |
| O: Service access to refrigerant section |
REFRIGERANT CIRCUIT
| PeC100 – Controller | MaR – Unit measurement and control system |
| Int. – Internal heat exchanger | Ext. – External heat exchanger |
| Comp. – Compressor | Inverter – Compressor control inverter |
| LS: Liquid refrigerant separator | RC: Liquid refrigerant collector |
| FD: Filter-drier | SG: Sight glass |
| EEV: Expansion valve | 4WV: Four-way valve |
| P1: Low pressure | P2: High pressure |
| T1: Vapor temperature at external heat exchanger | T2: Compressor suction temperature |
| T3: Ambient temperature | T4: Liquid refrigerant temperature |
| T5: Compressor discharge temperature |
¶ 7. APPENDICES
The appendices for the RTU air conditioning unit are:
¶ RISK ANALYSIS
| Potential Risks | Risk Source | Sub-source | Normal or Abnormal Condition | Technical Examples of Risk Mitigation | Notes |
|---|---|---|---|---|---|
| Mechanical Hazards | Weight | Unit falling | Normal | Installation according to TPM 173/25 | |
| Mechanical Hazards | Rotating parts | Fan | Normal | Special tool required for fan access | |
| Mechanical Hazards | Sharp edges | Unit casing | Normal | The unit has no sharp corners | |
| Electrical Hazards | Short circuit | Water on electrical components, leakage | Normal | Electrical protection of circuits and components | |
| Electrical Hazards | Short circuit | Incorrect installation | Abnormal | Installation according to TPM 173/25 | |
| Electrical Hazards | Electrostatic phenomena | Incorrect installation | Abnormal | Installation according to TPM 173/25 | |
| Electrical Hazards | Overload | Dust accumulation in the fan | Normal | Maintenance according to TPM 173/25 | |
| Electrical Hazards | Overload | Mechanical failure of the fan | Abnormal | Installation according to TPM 173/25 | |
| Electrical Hazards | Contact with live parts | Incorrect installation | Abnormal | Installation according to TPM 173/25 | |
| Electrical Hazards | Contact with live parts | Mechanical damage to electrical components | Abnormal | Installation according to TPM 173/25 | |
| Electrical Hazards | Electromagnetic radiation | Low-frequency electromagnetic emissions | None | ||
| Electrical Hazards | Electromagnetic radiation | High-frequency electromagnetic emissions | None | ||
| Thermal Hazards | Objects with high or low temperatures | Heating medium piping | Normal | Installation according to TPM 173/25, special tool required for access | |
| Thermal Hazards | Heating medium leakage | Connection leak | Abnormal | Installation according to TPM 173/25 | |
| High Pressure | High-pressure components | System leakage | Abnormal | Inspection according to TPM 173/25 | |
| High Pressure | High-pressure components | Rupture | Abnormal | Installation according to TPM 173/25, mechanical protection of the pressure circuit |