THERMAL SYSTEMSORCA UC35000 Installation & Operation Manual
ORCA UC35000 · English · 6 PDF pages
Supplied V5 edition, marked draft for approval. Unresolved values remain ‘To be confirmed’. Check the delivered unit’s SKU, fuel, voltage, serial number and controller revision; references are not proof of compatibility.
Current ATLOSON warranty excludes burners. Original documents may describe earlier terms; consult the current warranty on the product page.
Complete manual downloads
- Download ORCA UC35000 Installation & Operation Manual – English PDFV5 · 6 pages · English
- Télécharger le manuel d’installation et d’utilisation ORCA UC35000 – Français PDFV5 · 6 pages · Français
- Descargar el manual de instalación y funcionamiento ORCA UC35000 – Español PDFV5 · 6 pages · Español
- ORCA UC35000 Installations- und Bedienungsanleitung herunterladen – Deutsch PDFV5 · 6 pages · Deutsch
- Скачать руководство по установке и эксплуатации ORCA UC35000 – Русский PDFV5 · 7 pages · Русский
Current catalogue configurations
These links show the current catalogue identifiers. Reference SKUs in the supplied V5 manual may differ; confirm the delivered unit before installation or ordering.
| Configuration | Power | Voltage | Fuel |
|---|---|---|---|
| ATL-ORC-UC350 · Complete system | 35 kW | 24V | Diesel |
| SKU to confirm · Complete system | 35 kW | 12V | Diesel |
01 Identification, safety and use
This manual accompanies model ORCA UC35000. Record SKU, serial number, voltage, fuel and revision before installation. Accessories, functions and protective devices depend on the supplied variant.
Engine preheating and heating of a closed antifreeze circuit; cabin heating via a separate heat exchanger. No direct connection to drinking water.
| SKU | Fuel | Voltage |
|---|---|---|
| ATL-ORC-UC350 | Diesel | 24V |
Carbon monoxide: combustion gases must remain outside occupied spaces. Do not operate in a garage or other enclosed location. Keep intakes and flue outlets clear, especially after snow, mud or travel.
Fuel smell, abnormal smoke, leakage or a CO alarm: stop use, move occupants away and have the installation inspected. Do not restart to conceal a fault. Contact emergency services if there is immediate danger.
Fire and burns: keep combustible materials away from the appliance, hot ducts and exhaust. Do not use the service compartment for storage. Allow cooling before inspection and keep children away from hot surfaces.
Power: use the nameplate voltage. Never increase a fuse rating or bypass protection. For a normal stop, allow the controlled cooling cycle to finish before disconnecting power.
Stop before refuelling. Fuel, combustion, gas and mains work require a qualified professional. Install and maintain a CO detector suitable for the application according to its own instructions.
Coolant heating: the appliance belongs in an approved cooling loop and needs adequate circulation. Confirm flow direction, pump, bleeding, fluid compatibility, valves, flow rate and pressure. Never work on a hot or pressurised loop. Engine coolant is not drinking water.
02 Variant specifications
| Common specification | Value |
|---|---|
| Fuel | Diesel |
| Operating voltage | 24V |
| Heat output class | 35 kW |
| Release status | Pending technical data |
| Technical values | Not published on the website |
For unpublished values, use the supplied variant's nameplate and data sheet: starting current, fastening torque, pressure, pump flow and protection devices cannot be inferred from power.
03 Recommended applications and output selection
| Indicative engine displacement | 12 to 18 L and above |
|---|---|
| Coolant circuit | Record the vehicle's actual capacity and size for target temperature, available time, circulation and heat losses. |
Engine-displacement ranges are selection guides. They do not establish a circuit-volume limit. Use the vehicle-specified antifreeze mixture and a suitable pump.
04 Assembly identification
Coolant return Pump / unit Motor / heat exchanger
Power supply Protection Appliance
Controller
Fuel Pump / supply Appliance
Combustion air Appliance Outdoor exhaust
Functional identification diagram. A revision-specific internal drawing must accompany any disassembly work.
05 Step-by-step installation
STEP 1 - Mount the heater
Provide an accessible rigid support. Identify coolant inlet and outlet on the unit and leave clearance for the burner, pump and connections.
STEP 2 - Create the hydraulic circuit
Connect to the closed antifreeze circuit. Follow circulation direction and avoid restrictions and high points trapping air. Install the pump suitable for the circuit; separate engine coolant from drinking water.
STEP 3 - Fill and bleed
With the engine cold, fill with the vehicle-specified coolant. Open the necessary valves, bleed the heater and pump, then check level and leak tightness. Never start dry.
ACTION DETAIL - schematic
Bleed high points
Coolant heater Closed engine circuit
Check pump direction and measure supply / return temperatures.
STEP 4 - Connect combustion circuits
Install combustion intake and exhaust outside the cabin. For UC5000/UC9000 use the matched metering pump. For larger units follow the supplied burner's architecture: do not replace the circuit with a small metering pump.
STEP 5 - Check electrical supply and heating
Test power under load and circulation. Measure supply/return temperatures. Check the cabin-fan control if fitted. Complete a full shutdown and recheck the level when cold.
06 Electrical connections
DC battery Fuse holder ECU / unit UC35000
+ protected near the battery; dedicated - return
Compatible controller Signal harness
Schematic. Pins, rating and voltage: use the supplied harness.
Maintain power during cooling. Normal shutdown uses the controller; do not install a switch that interrupts the cycle. Protect cables and connections against water, abrasion and heat.
07 Initial commissioning
| Check | Result to verify |
|---|---|
| Rating plate and controller | SKU, voltage, fuel and connectors match |
| Mounting | Mountings, clearances, ducts and outlets checked |
| Fluid circuit | Filled and bled; no leaks |
| Supply under load | Voltage measured during starting |
| Complete cycle | Ignition, operation, setpoint and shutdown/cooling tested |
| Delivery | Rating-plate photo, measurements, date and installer recorded |
08 Operation and controls
The coolant heating setpoint differs from ambient temperature. Set the duration and program on the compatible circuit controller; check circulation and battery charge before automatic start.
| Situation | Action |
|---|---|
| Before starting | When cold, check level and antifreeze protection. Ensure required valves are open and the circuit is filled and bled. Do not start with an empty or frozen circuit. Never open a hot pressurized circuit cap. |
| Engine preheating | Program time only after an initial supervised test. Start with the correct coolant-heater controller. Displayed room temperature does not necessarily represent the coolant setpoint. Check circulation, leaks and gradual temperature rise. |
| Cabin heating | If a heat exchanger and vehicle fan controller are installed, check their operation separately. Cabin heating consumes some heat output and battery power; allow a longer preheating time than with coolant alone. |
| Shutdown / circulation fault | Stop normally with the controller; maintain power during purging and cooling. If overheating occurs or hoses remain abnormally cold, allow cooling and have the level, air bleeding, valves, restrictions and pump checked before restarting. |
09 Maintenance and winterization
| When | Work |
|---|---|
| Before use | Check fuel, battery, ducts, outlets, connections and absence of leaks. |
| After transport | Inspect mountings, cables, ducts and exposed components. |
| Before the season | Supervised test; full inspection of combustion and protective devices. |
| Engine circuit | Check cold level, antifreeze protection, bleeding and circulation. |
| After repair | Suitable seals, leak test, complete cycle and measurements recorded. |
Before use and after travel, inspect ducts, supports, openings, fuel lines and accessible connections. Once cool, remove external debris without directing water into the intake or flue.
Before the season and after storage, have the installation, battery, protection, tightness and combustion checked. Hour-based intervals, exercise-run duration and component life remain to be confirmed for the exact model and revision.
The user may keep access clear and clean cold surfaces using material-appropriate methods. Burner, exchanger, pump, sensor and ECU removal is qualified service work. Do not adjust fuel delivery or thermal protection.
After repair, require leak checks and a full cycle. Record date, hours, symptom, code, part SKUs and technician. Confirm applicable warranty terms with ATLOSON; other warranty policies are not transferred.
10 Troubleshooting and fault codes
| Symptom | Action |
|---|---|
| Display off | Check the permitted power supply, visible connection and identified protection device; a fuse that blows again requires professional diagnosis. |
| No ignition / flameout | Record the code and check fuel level and visible obstructions. Do not repeat starting or priming attempts; have fuel dosing and combustion checked. |
| Overheating / low heat output | Keep air passages clear. On a coolant circuit, allow cooling before checking the level; have air bleeding, circulation and pump checked. Do not bypass the sensor. |
| Smoke / odor / leak | Stop using the system and have it inspected before returning it to service. Do not tighten or repair a hot pipe. |
| Communication / remote control | Record the message and version. Have harness and protocol confirmed. For GSM, check the module and network availability with the installer. |
Record the exact code before clearing it. Stop and allow cooling, check the power supply under load, then ducts and the fluid circuit. Correct the cause before a supervised test. A repeated fault requires workshop service.
For a code not described here, record the number, controller revision and circumstances; send them to ATLOSON support. Do not use a fault table from another type of unit.
11 Parts, kits and purchasing
Order by part number and variant. Drawing callouts are not SKUs. Check voltage, fuel and connector before replacement. A complete-system reference is not a maintenance kit.
ATLOSON parts
Records and support
Date / hours: __________________ Work / parts: __________________
Keep the invoice, SKU, serial number and history. For assistance, provide a nameplate photo, code and symptom. ATLOSON support