HT40N Engine Water Heater User Manual Page 10 of 13
8
CAUTION
Before starting the machine, please ensure that all the air is exhausted out of the heater and it is fully
filled with coolant. If water is not used and environment temperature is below 0
℃
, please drain water
off when ordinary water is used. This is to prevent the water in the heater from getting frozen and
resulting in heater fracture.
It is recommended to use coolant of corresponding tab of environment temperature.
Please use power line of high temperature resistance.
Earth line must be soundly connected to earth.
Drain valve:
Can be opened or closed using hexagonal wrench, adjustable wrench, or a cross
screwdriver.
(Unit: mm)
Fig. 7 Drain Valve Size
