Commercial Air to Water Heat Pump Water Heater
49
a. If Network LED flashes green with occasional red
flashes then communication is OK.
b. If Network LED flashes green and red ON togeth-
er (BACnet MS/TP meaning: continuous Poll-For-
Master): communication not established (connec-
tion problems, or no network device found); this
may depend on electrical connection difficulties
or communication settings that are not compat-
ible with the other network devices connected.
3. For further configuration of BACnet MS-TP card,
please follow the “BACnet MS-TP Configuration
Guide”.
4. Parameter table is provided for customers to follow for
further configuration to customer’s network on page
59.
Configuration: BMS Interface card BACnet
TCP/IP Ethernet
1. Go to BMS configuration (will time out after 5 minutes
if no buttons pressed)
Change the settings for BMS configuration from the
display menu as mentioned below.
Address: No change required (address is irrelevant
for this card).
Protocol: CAREL
Speed: 19200 (this value is set from factory to com-
municate between heat pump and BMS card)
2. Open the heat pump enclosure and check the BMS
card.
Functions of the button: When starting up the TCP/IP Eth-
ernet card, this is used to select, for network communica-
tion, whether to use the factory parameters or the user
parameters. In normal operation, reboots TCP/IP Ether-
net card without needing to disconnect the power supply.
Status LED: indicates the status of communication with
the heat pump and the card. Once the starting sequence
has been completed, the Status LED flashes to indicate
the quality of communication.
a. If Status LED flashes green or green steady, then
communication with the BACnet TCP/IP Ethernet
card is OK.
b. If LED is red or green-red-green, then the com-
munication is not established. In that case, check the
BMS configuration.
Network LED: Displays the status of the physical network
connection (Ethernet connection signals), regardless
of whether the network parameters are correct; usually
this must be green and flash when data is transmitted/
received.
3. For further configuration of BACnet TCP/IP Ether-
net card, please follow the “BACnet TCP/IP Ethernet
Configuration Guide”.
4. Parameter table is provided for customers to follow for
further configuration to customer’s network on page
59.
COMMISSIONING
The BACnet TCP/IP Ethernet card features a button
(PUSHBUTTON) and two indicator lights (STATUS LED
and NETWORK LED).
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