INSTALLATION PLANNING / TRUCKS & RVS
Parking AC installation: plan before the unit arrives.
A parking AC installation starts with the exact model and voltage, an approved mounting plan and a checked electrical supply. Confirm roof or split-system fit, drainage and service access before ordering. Use the manufacturer’s installation instructions and vehicle requirements for the physical work; this checklist defines the information and handover evidence to collect.
1. Record the vehicle and intended duty
Record the make, model, year, cab or RV body variant, supply voltage and existing auxiliary battery arrangement. Photograph the proposed installation area from inside and outside, including adjacent roof equipment, trim, wiring paths and service access.
Add the climate, occupied cabin area, expected parked hours and whether the project needs cooling only or heating as well. A similar-looking vehicle may have a different roof structure, trim or electrical system. Do not approve an entire fleet from a photograph of one truck.
2. Confirm mounting and dimensional interfaces
| Review | Rooftop system | Split system |
|---|---|---|
| Mounting | Approved roof location, reinforcement, roof thickness and permitted installed load | Approved indoor/outdoor brackets and vehicle attachment points |
| Dimensions | Exact opening, bolt pattern, sealing surfaces, interior trim and vehicle height | Both unit envelopes, pipe and cable routes, clearance from moving or hot parts |
| Water / air | Seal system, drainage and clear condenser intake/exhaust | Condensate route, weather protection and unobstructed airflow for both units |
| Maintenance | Safe access to filters, fixings and service points | Access to connections, filters, brackets and replaceable components |
Request a dimensioned installation drawing for the selected model. Do not cut a roof using the decorative panel size, and do not use package weight as the installed structural load. A nominal vent opening is not proof that the mounting kit and vehicle are compatible.
Review VS02-PRO rooftop specifications or compare the split-unit layouts of VX3000SP and EcoMax 3S. Product graphics help shortlisting; the approved installation documents govern the work.
3. Agree the power and protection plan
Give the installer the exact voltage and model current data, cable-route length, battery and charging details, other loads, and the manufacturer’s protection requirements. Cable sizing depends on current, voltage drop, routing, installation conditions and the applicable instructions. There is no universal fuse or cable size for every parking AC.
Confirm the intended battery connection, isolation method, circuit protection, terminals, low-voltage protection and starting reserve. A low-voltage cutout is one part of the design; it does not prove that every battery arrangement will retain enough energy to start the vehicle.
A DC parking unit and a mains-powered RV unit have different supply requirements. Do not add an inverter or connect shore power unless the complete arrangement is designed for it. Review the 12V wiring checklist or 24V wiring checklist for the information required.
4. Install to the approved instructions
The installer should verify the delivered model, kit and drawing revision before modifying the vehicle. Follow the vehicle and equipment instructions for isolating power, mounting, tightening, sealing, drainage and electrical connections. Refrigerant work, where required by the supplied configuration, needs the appropriate equipment, competence and applicable authorization.
Record deviations before proceeding. Substituting a bracket, seal, refrigerant or electrical protection device can change the installation. Ask for an approved resolution instead of improvising around a mismatch discovered during fitting.
5. Commission the system and keep the evidence
- Identity and inspection: record the model, voltage, serial identification, kit and drawing revision. Photograph the finished mounting, cable routing and drainage.
- Electrical operation: record supply voltage at the unit and operating current under stated conditions. Check the specified protection and control functions using the approved procedure.
- Cooling and comfort: record ambient and cabin temperatures, mode, elapsed time and the occupied-zone result. Separate initial pull-down from steady operation.
- Water and vibration: inspect sealing and condensate management, then check for unusual vibration or contact between components using the agreed procedure.
- Handover: provide operating instructions, maintenance access, service contacts and an installation record. Agree any follow-up inspection with the installer.
For a fleet rollout, retain the trial vehicle’s record as the reference installation. Check which cab, battery or mounting variants require a new review before repeating the installation.
Prepare a useful installation enquiry
Send the vehicle details, inside/outside photos, measured installation space, supply voltage, battery arrangement, target duty and expected quantities. Identify who will install and commission the equipment. This lets the discussion move from a generic product enquiry to the actual vehicle interfaces.
Prepare your RFQ or review VETHY’s engineering project process. If you are still choosing a layout, use the parking AC buying guide first.
Common questions
Can I reuse an existing roof hatch?
Possibly, but opening size alone is insufficient. The selected model, mounting kit, roof structure, thickness, sealing surface and interior clearance must all be reviewed. Obtain the approved installation drawing before cutting or modifying the roof.
Is this a universal DIY installation manual?
No. It is a planning and handover checklist for buyers and installers. The exact model manual and vehicle instructions determine dimensions, fastening, wiring, refrigerant work and commissioning procedures.
What should I test before ordering for the whole fleet?
Complete a representative installation trial and keep the mechanical, electrical and comfort results. Document vehicle variants so a successful installation on one cab is not assumed to cover every vehicle.
Sources & specification records
Reviewed for this update on October 26, 2026. Product specifications identify the stated configuration; confirm the applicable documents with your quotation.
FLEETS / DISTRIBUTORS / OEM PROJECTS
Turn the requirement
into a project brief.
Share the vehicle, voltage, operating climate and planned quantities. Bring the installation and evaluation requirements to the conversation.