Aerco BOILER MANAGEMENT SYSTEM II 5R5-384, Инструкция по установке, эксплуатации и обслуживанию

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PROGRAMMING BMS II
Selecting Internal Setpoint Temperature
in the Field Adjust Menu as follows:
RNAL SETPT
is
The Internal Setpoint Temperature is selected using
1. Using the ▲ or ▼ arrow key on the keypad, scroll through the menu until
INTE
displayed in the first line of the VFD display. The second line of the display will show the currently
selected Internal Setpoint temperature (default = 160°F). If the required
INTERNAL SETPT
is not
displayed in the second line of the display, press the
CHANGE
key. The VFD display will switch to a
reverse video format indicating that a change is in process.
2. Using the ▲ or ▼ arrow key, select required
INTERNAL SETPT
temperature
.
rt to the normal display
u. To complete the Constant Setpoint
Selecting Boiler Operating Mode
el or Sequential Mode operation. The Boiler Operating Mode is
MENU
key, until
CONFIGURATION MENU
appears in the
eypad, press the ▲ arrow key once.
BOILER OP MODE
will be displayed in the first line of
3. Press the
ENTER
key to store the change. The reverse video display will reve
format indicating that the change has been store in memory.
4. This completes the required entries in the Field Adjust Men
Mode set-up, select the Boiler Operating Mode as described below.
The Boiler Plant can be set for either Parall
selected in the Configuration Menu as follows:
1. Using the keypad on the BMS II, press the
display.
2. On the k
the VFD display. The second line of the display will show the currently selected Boiler Operating
Mode. (
SEQUENTIAL MODE or PARALLEL MODE
). The default setting is
SEQUENTIAL MODE.
3. If the desired Operating Mode is not displayed in the second line of the display, press the
CHANGE
will revert to the normal display
point Mode.
key. The VFD display will switch to a reverse video format indicating that a change is in process.
4. Using the ▲ or ▼ arrow key, toggle the display to the desired setting
.
5. Press the
ENTER
key to store the change. The reverse video display
format indicating that the change has been store in memory.
6. The BMS II is now programmed for operation in the Constant Set
4.5 “TEMP AND LOAD” OPTION
The boiler plant, and the System Start Relay, can be programmed to start based on either, or both, an
, the system (and the System Start Relay) will
outdoor temperature and/or load demand criteria. When the
SYS START OPTION
is set to
TEMP ONLY
,
the outdoor temperature is the only criteria used to activate the system. In this case the system, and the
System Start Relay, will activate when the outdoor temperature falls below the
SYS START TEMP
setting. If no outdoor sensor is installed, the system (and the System Start Relay) will always be activated
in this case. The system will shut down and the System Start Relay deactivated when the outdoor
temperature rises above the
SYS START TEMP
setting.
If the SYS START OPTION is set to
TEMP AND LOAD
start when the outdoor temperature is below the
SYS START TEMP
setting and the load demand
(
PERCENT OF LOAD
) is at or above the
LOAD START PCT
(in Calibration Menu). The
PERCENT OF
LOAD
display in the Operating Menu will show 0% until both of these criteria are satisfied. The system will
shut down and the System Start Relay deactivated if either the outdoor temperature rises above the
SYS
START TEMP
or the
PERCENT OF LOAD
falls below the
LOAD STOP PCT.
If no outdoor sensor is
installed, the system (and the System Start Relay) will activate when the
PERCENT OF LOAD
is at or
above the
LOAD START PCT.
The system will shut down when the
PERCENT OF LOAD
falls below the
LOAD STOP PCT.
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