Suburban Nautilus On Demand RV Water Heater Technical and Customer Service Guide

Overview

The Suburban Nautilus On Demand RV Water Heater offers an endless supply of hot water without the need for a conventional storage tank. This system is designed for RV use, providing hot water for showers, baths, dishes, and laundry from any fixture simultaneously. It features a 60,000 BTU 2-Stage Modulating Combustion System (MCS) for efficient and consistent hot water delivery.

Key Features

• 60,000 BTU Two-Stage Self Modulating Combustion System: Automatically adjusts LP gas input based on water demand, ensuring consistent hot water.
• Built-In Freeze Protection: Protects the unit under cold weather conditions.
• Weight: Installed unit weighs 16.3kg, including optional accessories.
• Warranty: Comes with a two-year warranty.

MCS Monitoring

The system monitors several parameters to adjust the heating process, including:

• Inlet water temperature
• Inlet water flow
• Output water temperature
• Combustion air fan speed
• Heat exchanger & burner operation

Control Center (Sold Separately)

• Models: 950-03500 (White), 950-03502 (Black)
• Provides precise temperature control for reliable and consistent comfort.

Vents (Sold Separately)

• 950-03504: For 0 - 2.5cm wall thickness
• 950-03506: For 2.5-5.0cm wall thickness
• 950-03508: For 5.0-7.6cm wall thickness

Access Doors (Sold Separately)

• 950-03510/12 (6 GAL, White/Black)
• 950-03514/16 (10 GAL, White/Black)
• 950-03518/20 (6 GAL Atwood, White/Black)

Installation Configuration Examples

• Minimum Specification Install: Requires the system and a single vent.
• Maximum Specification Install: Requires the system, Control Center, a single vent, and a single access door.

Performance Specs

• Model: Nautilus IW60A, 5187A
• Maximum Mj/Hr: 64
• Fuel Source: Universal LP Gas
• Dry Weight: 15 kg (Optional accessories 1.3kg shipping weight)
• Operational Voltage Range: 10.2 - 14.5 VDC
• Maximum Output Water Temperature: 50°C
• Digital Control Center Temperature Range: 35° - 50°C
• Liters Per Minute (LPM) Required Flow: 1.9 LPM
• Heating Capacity: 7.6L/min at 28°C Rise
• Product Dimensions: 316.6 mm W x 317.8 mm H x 464.9 mm D (includes inlet & discharge water lines)

Water Temperature Heat Gain

• Input Water Temp: 10° - 21°C
• Output Water Temp: Up to 50°C depending on the input temperature and flow rate.

Troubleshooting and Support

For troubleshooting steps, refer to the specific issue within the operational manual or contact technical support for assistance. Ensure all installation and operational guidelines are followed to prevent common issues.

Note

Specifications are accurate at the time of printing but are subject to change. Always refer to the latest documentation for the most current information.