THERMAL SYSTEMSGREG L1800 Installation & Operation Manual
GREG L1800 · English · 7 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 GREG L1800 Installation & Operation Manual – English PDFV5 · 7 pages · English
- Télécharger le manuel d’installation et d’utilisation GREG L1800 – Français PDFV5 · 8 pages · Français
- Descargar el manual de instalación y funcionamiento GREG L1800 – Español PDFV5 · 8 pages · Español
- GREG L1800 Installations- und Bedienungsanleitung herunterladen – Deutsch PDFV5 · 8 pages · Deutsch
- Скачать руководство по установке и эксплуатации GREG L1800 – Русский PDFV5 · 8 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 |
|---|---|---|---|
| GREG1001 · Complete system | 18 L | 12V / 120V | Diesel / Electric |
01 Identification, safety and use
This manual accompanies model GREG L1800. Record SKU, serial number, voltage, fuel and revision before installation. Accessories, functions and protective devices depend on the supplied variant.
Domestic hot-water production in a mobile installation, with diesel, electric or hybrid modes according to version. This is not an engine preheater.
| SKU | Fuel | Voltage |
|---|---|---|
| ATL-NER-WH18 | Diesel + Electric | 12V + 120V |
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.
Domestic water: published capacity is 18 L, with no validated thermal output. Confirm filling, bleeding, temperature, maximum pressure, relief valve and draining. Protect users against scalding at outlets. Provide a frost-draining procedure. The 12 V and 120 V supplies are separate circuits requiring validated connections.
02 Variant specifications
| Common specification | Value |
|---|---|
| Fuel | Diesel + Electric |
| Operating voltage | 12V + 120V |
| Water capacity | 18 L |
| Energy modes | Diesel / electric / hybrid |
| Controller | LCD touchscreen controller |
| Altitude mode | Automatic altitude mode stated |
| Pressure protection | Automatic pressure relief stated |
| Application | Domestic hot water in a mobile installation |
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
Select according to insulation, outdoor temperature, heated volume and air exchange. For domestic water: water demand, pressure and frost protection. Engine displacement and engine coolant volume are not applicable to this unit.
04 L1800 component identification
Drawing callouts: identify components before service. A sectional view shows operation; it does not define a disassembly sequence. Check the unit revision before ordering any part.
| Item | Component |
|---|---|
| 1 / 16 | Mains electronics / heating element depending on option |
| 3 / 4 | Water sensor / DC ECU |
| 5 / 6 | Base / combustion fan |
| 7 / 8 / 9 / 10 | Fuel / glow plug / flame sensor / chamber |
| 12 / 13 / 14 / 15 | Hot outlet / cold inlet / drain / valve |
| 17 / 18 | Tank / combustion tubes |
| 22 / 23 / 24 / 25 | Controller / controller cable / pump cable / DC supply |
05 Step-by-step installation
STEP 1 - Prepare the penetration
Compare the supplied template with the base and under-vehicle clearances. Check that the support is rigid and no pipe crosses the cutout area.
STEP 2 - Install the protection plate
Clean and dry contact surfaces. Apply compatible sealant to the inside of the plate. Position, press and secure according to the kit; protect edges.
1 Check the actual template 2 Apply the seal
Rigid support, clean and dry surface Inner-face detail
3 Position, press, secure
Plate installation illustration: the supplied template determines the cutout. Do not measure the drawing.
Positioning in the penetration External mounting detail
STEP 3 - Install the assembly
Position the water heater and burner without stressing connections. Check access to the safety valve and drain. Keep the combustion discharge outside occupied space.
ACTION DETAIL - schematic
Tank connection
Support the tube. Insert as specified for the supplied connector.
Check retention and sealing.
STEP 4 - Connect water
Connect cold inlet, hot outlet and safety discharge. Support pipes. Keep the valve discharge unobstructed, downward, outdoors and protected against freezing.
Fuel connection and filter Valve connection
STEP 5 - Fill and test
Fill with a hot-water tap open and inspect all joints. Connect DC and optional mains according to the nameplate. Test available modes and complete draining before delivery.
06 Electrical connections
DC battery Fuse holder ECU / unit L1800
+ protected near the battery; dedicated - return
Compatible controller Signal harness
Schematic. Pins, rating and voltage: use the supplied harness.
Mains: separate circuit with grounding and protective devices matched to the rating plate.
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
Fill the domestic-water tank before water heating. Select an available mode: water, air or combined according to unit; fuel, mains or mixed according to variant. A setpoint does not guarantee immediate tap-water temperature: scalding hazard.
| Situation | Action |
|---|---|
| Filling | Confirm that this is the 18 L domestic-water tank. Close the drain and fill through the cold-water system with a hot-water tap open until air is expelled. Check leak tightness and operation of the safety valve and its discharge pipe. |
| Heating | Select a mode compatible with the available power supplies. Before electric heating, check the voltage and power on the heating element nameplate; the L1800 name alone does not establish the voltage. Beware of scalding at the hot-water outlet. |
| Hygiene and maintenance | Use products and a procedure compatible with tank materials. Do not automatically apply another manufacturer's descaling procedure. Have the valve, power supply, fittings and connection condition checked. |
| Complete draining | Stop, allow cooling and open the drain points and taps that admit air. Check that the tank and low points actually drain. Never allow the heating element to heat dry on the next start. |
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. |
| Domestic water | Check valve and drain; drain before frost or storage. |
| 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.
Winter storage: stop, allow cooling, switch off the water pump and open taps and drains. Check that the tank and low points actually drain. Before restarting, fill and bleed; never heat an empty tank.
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