Quantech QTH1 0035, Quick Start Manual

Page: 16 / 20

Figure 16: Shut-off valve and DIP switch setting
DIP OFF ON Default
SW302-6 Non-shared
pump with
YWSV
Shared
pump, no
YWSV
ON
Leader-follower interconnections
The interconnection between the leader and follower
chillers is carried out through the CON 204 according
to the scheme described in Figure 19 on page 18 .
In a leader-follower chiller configuration, view the pa-
rameters settings or operation data check on the HMI,
which is installed on leader module.
View the readings of the follower chillers through the
leader HMI. By selecting the number of the module in
the Unit Selection menu, you can read the parameters
of the module selected.
BMS control
The QTH1 building management controls use the RS-
485 standard, including BACnet MS/TP, Modbus RTU,
or N2 connectivity for communication with virtually
any building management system (BMS), including
Verasys™ controls systems.
This advanced, embedded control capability also al-
lows multiple heat pumps to be connected and mon-
itored through a single controller. Each unit features a
touchscreen display that has an easy-to-use, web-style
interface and intuitive navigation for easy access to op-
erational data. Information can be displayed in multi-
ple languages and setup is very easy.
To simplify installation and setup, the SC-EQ commu-
nication board automatically determines the building
automated system (BAS) protocol, baud rate, and the
model of the connected chiller or rooftop unit. The
only user setting is the MAC address for the SC-EQ
on the BAS network. The network hardware address
for the SC-EQ comm card is set on a single 8-way DIP
switch. Switch 8 is not used. The switches are binary
weighted allowing the setting of addresses from 1 to
127. For more information about SC-EQ communica-
tion card instructions, refer to SC-EQ Communication
Card, Form 450.50-N1 .
The SC-EQ board is a standard configuration on QTH1
units. In a modular installation, the SC-EQ card on the
leader module must be active. For SC-EQ card loca-
tion, see Figure 18 and SC-EQ card configuration see
Figure 19 on page 18.
Quantech
16
Form QTH1-QSG1
Issue date: 12/20/2023