TK 56430-18-IP-EN
75
Section 8 - Evaporator Drain Hose Standards
Overview
During normal operation, condensate moisture accumulates on the evaporator coil fins and drips into the drain pan.
Drain tubes in the pan allow the water to drain out of the evaporator, down the drain hoses and out of the cargo box
onto the ground. The supplied drain hoses must be installed onto both evaporator drain tubes. One-way water valves
(kazoos) are supplied to help keep heat, exhaust fumes and debris from entering the cargo area up through the drain
hose(s). These valves must be installed securely onto the end of the drain hose with a band wrap.
Drain Hose Standards
Evaporators and drain hoses must have sufficient slope to verify the
water drains away from the evaporator.
Attach drain hoses onto both evaporator drain tubes and combine into
a single hose using supplied Y-connector. MAX Units Only - Install
heater into each drain hose as far as they will go.
All hose connections must use worm drive or constant tension clamps
- NOT BAND WRAPS.
ES320 MAX 30/50, V520 RT, and nosemounted SPECTRUM units
ONLY: These evaporators are equipped with an accumulator assembly
which includes a separate drain hose. This drain hose must be
connected along with the other two drain hoses using the T and Y
connectors.
