Table of Contents
Advertisement
Dedicated Domestic Hot Water (DDHW) Operation
The control can operate to provide heat for a Dedicated
Domestic Hot Water (DDHW) system.
DDHW heating is available by setting the Application Mode in
the Setup Menu to DDHW.
DHW Call -- --- --- --- - --- ---- -------- -------- ----- -------
-- --- --- --- - --- --------------------------------
A DHW Call is required in order for the control to provide heat
to a dedicated DHW tank. Once the control registers a DHW
Call, it will display the "DHW" icon under Calls in the display.
This can be done by:
DHW Sensor
The control can register a DHW Call when a DHW Sensor is
wired to terminals 21 & 22. Once the DHW Sensor temperature
drops 1/2 of the DDHW Differential setting below the DDHW
Setpoint, the control registers a DHW Call.
Building Automation System (BAS)
The control can communicate with a Building Automation System
(BAS) to provide remote monitoring & adjustment capability.
BAS Mode - --- ------ --- -- ------------------------ -------
- --- ---- -- - ---- ------------------------ -------
There are two modes of BAS communication that define the
interaction between the BAS & the control. The level of interac-
tion is determined by the Application Mode setting.
Refer to the Heatronic 4000 BAS Manual for more information
including a listing of the read / write parameters.
Monitor
Monitor mode is available when the Application Mode is set
to either Outdoor Temperature Reset, Setpoint, Dedicated
Domestic Hot Water (DDHW) or Energy Management System
(EMS). The BAS Monitor item in the BAS Menu must be set to
ON to enable Monitor mode.
With Monitor mode, the control allows for viewing & adjustment
capability of select items within the various menus.
Temperature
Temperature mode is available when the Application Mode is
set to Building Automation System (BAS).
With Temperature mode, the control operates to maintain the
setpoint temperature provided over the BAS network. In order
for the control to be able to operate to maintain the BAS Setpoint
temperature, the BAS must also write a Heat Call command
over the BAS network.
Whenever a BAS Heat Call command is received, the Heat
segment is turned under the Calls in the status field of the
display.
Heatronic 4000
DDHW Differential -- --- ---- --- --- --- --- --- - -- --- ---- --- -
A DHW Call is registered when the temperature at the DHW
sensor drops the DDHW DIFF setting below the DDHW Setpoint
setting. The DHW Call is satisfied once the temperature at the
DHW Sensor rises to the DDHW Setpoint setting.
D H W Tar get
O N
Boiler Target Temperature During a DDHW Call - -- --- --- ---
When a DHW Call is present, a boiler target is determined. The
boiler target is set to the DDHW Setpoint setting.
DDHW During UnOccupied - --- --- --- --- --- - --- --- --- ---
A second DDHW Setpoint setting is available for the
UnOccupied periods.
DIP Switch must be set to Setback to view UnOccupied
items.
During the Away Scene, DHW Calls are ignored.
If primary pump operation is desired, the BAS must write a
BAS Primary Pump command over the BAS network.
If indirect DHW pump operation is desired, the BAS must write
a BAS IDHW Pump command over the BAS network.
BAS Type --- --- ---- --- --- --- --- --- -- - --- ---- - -- ----- --- -
--- --- ---- --- --- --- --- --- --- --- --- --- --- --- --- -
The control supports Modbus
tions. Selection is made through BAS TYPE item in the BAS
menu.
Network Configuration Settings in BAS Menu - --- --- --- -
Refer to the BAS menu section of this brochure for a listing of
all the BAS network configuration settings.
16 of 60
-- --- ---- --- --- --- --- --- --- --- ---- --- -
O FF
- --- --- --- --- --- -- -- --- --- ---
®
®
& BACnet
IP communica-
BTC461503101C | 6720810369 (2018/03)
I D H W
D i f f er ent i al
- -- --- --- ---
- --- --- --- -
Hide quick links:
Advertisement
Table of Contents
