Hot Water Installation Plan

This Hot Water Installation Plan outlines the installation, mounting, routing, protection, and testing procedures for the hot water system in the CTC build. The system uses a Camplux tankless instant hot water heater that does not require exterior venting. The heater will be mounted on the bathroom wall, supplying hot water to all fixtures throughout the trailer.

System Overview

The hot water system consists of:

Cold water feed from the bathroom manifold
Camplux tankless instant hot water heater mounted on the bathroom wall
Hot water distribution lines routed to all fixtures
Outdoor shower connection supplied from the same hot water outlet

The bathroom serves as the dedicated mounting location for the heater, providing short line runs, easy access, and simplified routing.

Installation Steps

1. Preparing the Bathroom Mounting Area

Select a solid section of bathroom wall framing for mounting the heater.
Install a backing board if needed for structural support.
Ensure clearances meet Camplux installation guidelines.
Plan routing paths for the cold inlet and hot outlet lines.

2. Installing the Cold Water Feed

Run a dedicated cold water line from the bathroom cold water manifold to the heater location.
Use PEX with proper clamps and abrasion protection.
Route inside conditioned space whenever possible.
Install a shutoff valve near the heater for service isolation.

3. Mounting the Camplux Tankless Heater

Mount the heater to the bathroom wall using manufacturer‑approved hardware.
Connect the cold inlet and hot outlet using PEX or approved fittings.
Follow Camplux clearance and safety guidelines (no external venting required).
Ensure access to the heater for maintenance and inspection.

4. Installing the Hot Water Distribution Lines

Connect the heater’s hot outlet to a small distribution tee or manifold.
Label each branch: Shower, Bathroom Sink, Kitchen Sink, Washer/Dryer Combo, Outdoor Shower.
Install shutoff valves on each branch for serviceability.

5. Routing Hot Water Lines

Run insulated PEX lines from the heater to each fixture.
Use cushioned clamps to prevent vibration and abrasion.
Route lines inside conditioned space whenever possible.
Ensure the outdoor shower line is protected where it passes through walls.

Safety & Protection

Pressure Relief Valve: Install per Camplux requirements and route discharge safely.
Thermal Protection: Insulate all hot water lines to reduce heat loss.
Electrical Safety: Follow Camplux power requirements and use proper circuit protection.
Wall Penetrations: Use grommets or bulkhead fittings to protect PEX lines.

Testing Procedures

Cold Feed Test: Pressurize the cold line to the heater and check all connections for leaks.
Hot Water Test: Power on the Camplux heater and verify hot water at the shower, bathroom sink, kitchen sink, washer/dryer combo, and outdoor shower.
Temperature Stability Test: Confirm that the heater maintains a consistent output temperature under normal use.
Flow Test: Verify acceptable flow rates at each fixture when used individually and in combination.

Integration With the Plumbing System

The hot water system integrates with the larger plumbing system as follows:

Cold Water: Bathroom manifold → Camplux heater (cold inlet)
Hot Water: Camplux heater (hot outlet) → Shower, Bathroom Sink, Kitchen Sink, Washer/Dryer Combo, Outdoor Shower
Grey Water: All hot water fixtures drain into their respective grey water systems.

How This Plan Will Evolve

As installation progresses, this plan will be updated with model‑specific details, final routing decisions, and installation photos. Any refinements to line routing, fixture connections, or heater settings will be documented so the system can be maintained, adjusted, or replicated in future builds.