Propex HS2000:
Installation Guide
Professional guidelines for gas heater integration. Copper pipe compression, combustion safety, and UK gas compliance.
Mounting & Position
The HS2000 can be mounted internally (under a seat or in a cupboard) or externally (using a mounting box). If mounting internally, ensure the unit is on a flat surface and that the intake/exhaust ports can pass through the floor without hitting structural chassis members.
Gas Line Integration
The Propex uses an **8mm copper gas line**. We strongly recommend using a dedicated isolation valve for the heater.
- Use high-quality brass compression fittings (do not use solder).
- Ensure the pipe is supported every 500mm with rubber-lined P-clips.
- Keep gas lines clear of electrical looms and hot exhaust pipes.
Combustion Pipes
The Propex is a balanced flue system. It draws air for combustion from outside and exhausts gases back outside.
Separation Rule
The intake and exhaust pipes must be separated by at least 500mm at their exit points to prevent "short-circuiting," where the heater draws in its own exhaust gases, leading to poor combustion.
Electrical Connections
The HS2000 draws 5.9A momentarily during startup to ignite the gas. You must use the provided 12V loom and connect it to a fused circuit (10A fuse recommended).
The thermostat should be mounted at chest height, away from direct sunlight or the heater's own warm air vents, to ensure accurate temperature sensing.
Testing & Certification
Once installed, you **must** perform a gas leak test using leak detection spray on all joints.
UK Gas Safety Notice
In the UK, while you can physically install the unit yourself, the final connection and commissioning for a "for hire or reward" vehicle must be signed off by a Gas Safe registered engineer qualified in LPG and Caravans.
Propex HS2000 Gas Installation Schematic
Download our verified installation schematic. Includes 8mm copper pipe routing, compression fitting torque specs, and combustion flue safety geometry.
View Diagram Details