Specifications

Chapter 3 – Boat Systems
Section K. Heating System
Introduction
The cabin of Defender Class boats is heated by a 12,000-BTU combustion
heater. The heated air is also used for defrosting or defogging the
windshield.
K.1. Heater
A 12,000-BTU combustion heater that utilizes diesel fuel is located inside
the cabin, port side behind an access panel. The heater draws air from
outside combustion (25%) and mixes it with cabin air (75%). The heater
intake (Figure 3-63 (RB-HS), Figure 3-64 (RB-S)) is located on the port
cabin exterior bulkhead, below the windshield. The heater incorporates an
internal electric fan for air circulation, a self-contained ignition system for
igniting the fuel, and a fuel pump.
Heater exhaust air is discharged from an opening on the port exterior cabin
bulkhead (Figure 3-65 (RB-HS), (Figure 3-64 (RB-S)).
Figure 3-63
Heater Intake (RB-HS)
3-71