AERCO KC1000 Boiler equipped with Mod-Box Controller - Manual (Page 33)

MODE OF OPERATION
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5.6.1 COMBINATION CONTROL SYSTEM
FIELD WIRING
Wiring for this system is between the BMS
panel, the CCP and terminals 2 and 3 in the
unit’s field wiring box. Wire the units using a
twisted pair of 22 gauge minimum wire. No
shield is necessary. When wiring multiple units,
each unit’s wiring must conform to the above.
For a complete CCP system-wiring diagram, see
the AERCO CCP-1 literature.
5.6.2 COMBINATION CONTROL SYSTEM
SETUP AND STARTUP
Setup for the Combination mode unit is limited to
setting the desired setpoint of the unit when in
combination (constant setpoint mode).
The setpoint is adjustable from 50 to 220
degrees. To set the setpoint do the following:
1. While in either the primary or secondary
menus, scroll through until the display shows
"Setp".
2. Use
the ⇑ ⇓ keys to set the desired setpoint.
3. Press enter to accept the changes.
While it is possible to change other temperature
related functions, when the unit is in combination
mode, the unit is factory preset with settings that
work well in most applications. It is suggested
that AERCO be contacted prior to changing
settings other than the unit’s setpoint. For a
complete listing and description of temperature
related functions see Appendix E.
When the unit switches to BMS mode, the firing
rate is controlled by the AERCO BMS Model
168. There are no setup requirements in this
mode. However when the unit is in BMS mode,
and it is desired to run the unit in manual mode,
it must be taken out of remote mode and set to
local mode. Once finished with manual mode it is
necessary to set the unit back to remote mode
for it to be controlled by the BMS.
To set the unit in local mode do the following:
1. Access the temperature controller’s
secondary menu.
2. Scroll through the menu until lore is
displayed.
3. Use
the ⇑ ⇓ keys to set the temperature
controller to local. The yellow REM light, on
the temperature controller, should extinguish
4. Press ENTER to accept the change.
5. Follow the above directions to change back
to remote mode.
5.7. USING THE OUTSIDE AIR SENSOR
FEATURE
This feature allows the unit to be enabled or
disabled based on outside air temperatures. To
use this feature an outside air temperature
sensor must be installed, the feature must be
turned on, and a temperature setting must be
chosen.
To initiate this feature:
1. Access the secondary menu in the
temperature controller.
2. Scroll through the secondary menu until
OAST is displayed.
3. Use
the ⇑ ⇓ keys to turn this feature on or
off.
4. Press ENTER to accept the change
5. Now scroll through the secondary menu until
OAT is displayed.
6. Use
the ⇑ ⇓ keys to set the desired outside
air temperature the units are to begin
running.
7. Press ENTER to accept the change