Envicool EMW90HDNC1A - Page 17

User Manual
3 Installation Guide
EMW90HDNC1A Air-cooled Chiller
15
Type
Pin
Definition
Description
COM
A
CAN+
CAN
communicat
ion
interface.
B
CAN-
C
RS485+
RS485
communicat
ion
interface.
D
RS485-
The pins not listed in the DEBUG interface and COM
interface are reserved.
Procedure
Step 1 Confirm that the chiller has been
disconnected.
Step 2 Refer to Table 3-3 to connect and tighten
the power cord and communication cord.
Step 3 Turn on the circuit breaker of the chiller.
Remove the cover on the circuit breaker
(see mark 1 in Figure 3-2), turn on the
circuit breaker and install the cover back.