Chinook RV Winterizing Instructions

Draining the fresh water tank
Periodically it is necessary to drain the fresh water system. Opening the water tank drain petcock and the hot and cold line petcocks do this. On rear entry models, all three petcocks are located inside the coach. On side entry models, the water line drain petcocks are inside the coach, while the water tank drain petcock is on the bottom of the tank located below the coach. The water heater anode rod must be removed to drain the water heater.

Winterizing fresh water system
To winterize the fresh water system simply drain the fresh water lines and tank. This will help ensure that there will be no damage to the lines or tank.

**Caution (side entry models) Because the fresh water tank on the side entry models is located on the exterior of the coach (mounted below the coach floor), it is subject to freezing temperatures. While the insulation covering the tank will prevent the water from freezing under mildly subfreezing conditions (in the mid 20's degrees F) for two to three days. The water will eventually freeze under prolonged sub-freezing conditions.

Winterizing waste water system
After draining the wastewater tanks, add a recommended solution to prevent freezing in traps and other water filled cavities in the drainage system.

**WARNING: DO NOT USE ANTIFREEZES OTHER THAN THOSE RECOMMENDED FOR PLASTIC PIPES AND RECREATIONAL VEHICLES.