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

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PROGRAMMING BMS II
4.6 “START ENABLED” OPTION
The BMS II can be used to turn on and prove a device such as a fresh air damper, gas booster or the flow
of a local pump before ramping up the output. With
SYS INTLK CONFIG
(Configuration Menu) set to
START ENABLED
, the BMS II will allow 30 seconds after it activates the System Start Relay before
proving the selected interlock (such as
SYS START INTLK
) and ramping up the output. The System Start
Relay can activate the device and the dry-contact proving switch of the device, or devices can be wired to
one or both interlocks.
4.7 SYSTEM INITIALIZATION AND POLLING
In order for the BMS II to recognize the boilers connected to the RS485 Network, Initialization and polling
must be accomplished by performing the following steps:
1. Set the
ON/OFF
switch on each boiler control panel to
ON
.
2. Turn on the BMS II by pressing the
ON
key. The BMS will automatically poll (recognize) each boiler at
prescribed intervals.
3. Check the yellow
REMOTE
(
REM
) LED on each boiler control panel to ensure it is ON. This indicates
that the boiler is now being controlled by the BMS II.
4. If any of the boiler
REMOTE
LEDs are off, check to ensure that:
(a) Boiler AC power is not turned off
(b) Boiler is not shut down due to a fault.
(c) The RS485 Network connection is not broken.
The BMS will continuously poll the boilers at prescribed intervals. Therefore, if a boiler is placed off-line
and then placed back on-line, it will again be recognized by the BMS during the next polling cycle.
4.8 TESTING THE SYSTEM
The following procedure places a load on the system and will begin firing the boilers. At this point it is very
important to make sure the system pumps are running.
After system has been initialized as described in paragraph 4.5, proceed as follows:
IMPORTANT
Prior to performing these tests, view and record the PRESENT
settings stored in the BMS II for
HEADER SET MODE
and
INTERNAL SETPT.
These settings are located in the Field Adjust
Menu and MUST be restored to these values upon completion of
the following tests.
1. Turn off the BMS II by pressing the
ON/OFF
key. The
ON
LED will turn off.
2. Using the
MENU key,
select the
FIELD ADJUST MENU
and scroll to the
HEADER SET MODE
option, The second line of the display will show the current setting stored in memory (
CONSTANT
SETPT, OUTDOOR RESET,
or
REMOTE SETPT).
3. If
CONSTANT SETPT
is not currently selected, press the
CHANGE
key. Select the
CONSTANT
SETPT
mode using the ▲ or ▼ arrow key. When selected, store the change by pressing the
ENTER
key.
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