Commercial Air to Water Heat Pump Water Heater
48
COMMISSIONING
COMMISSIONING PROCEDURE-
BMS CONFIGURATION
Before commencing the commissioning procedure, en-
sure the ‘Building Management Systems (BMS/BAS)’
installation procedure has been completed as stated on
page 46.
• If the system is comprised of single or multiple
standalone heat pumps, perform this procedure
for each heat pump. Each heat pump will have its
own BMS card.
• If the system is comprised of multiple heat pumps
for primary/secondary operation, perform this pro-
cedure for only master heat pump. Only primary
heat pump will have a BMS card and the second-
ary heat pumps will be connected via LAN cable.
Configure BMS settings from the display of the heat pump.
After commissioning the primary heat pump, go to the
Service menu
(Service- password 0022>BMS config). Refer to page 50
to see the chart for navigating Service menu.
Configuration: BMS Interface Card Modbus on
RS485
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: Change the address value based on the
unique address set by the customer’s network.
Protocol: Choose option ‘Modbus’
Speed: Change the speed value based on the cus-
tomer’s network.
2. Parameter table is provide for customers to follow for
further configuration to customer’s network on page
59.
Configuration: BMS Interface card BACnet
MS-TP
1. Go to BMS configuration (will time out after 5 min-
utes 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 BACnet
MS-TP, this is used to select, for network communication,
whether to use the factory parameters or the user param-
eters
In normal operation, reboots BACnet MS-TP 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, then communication
with the BACnet MS-TP 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: The Network LED (right) indicates the sta-
tus of communication with customer’s network. Once the
starting sequence has been completed, the Network LED
flashes to indicate the quality of communication with cus-
tomer’s network.
The BACnet MS-TP card features a button (PUSHBUT-
TON) and two indicator lights (STATUS LED and NET-
WORK LED).
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