Aerco Benchmark G-00-711, User Manual

Page: 32 / 79

MODE OF OPERATION
5-5
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. This must
be done when the unit is in combination
(constant setpoint) mode.
The setpoint is adjustable from 50 to 210
degrees.
To set the setpoint do the following:
1. While in either the primary or secondary
dimenus, scroll through until "Setp" is
displayed.
2. Use the ⇑ and ⇓ arrow keys to set the
desired setpoint.
3. Press ENTER to accept the changes.
While it is possible to change other temperature-
related functions for combination mode, the unit
is factory preset. These preset settings 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 boiler(s) are in constant mode
(satisfying domestic load), the temperature
controller is in LOCAL mode and AUTO is ON.
To operate the unit in manual mode the
temperature controller must be taken out of
REMOTE and set to LOCAL, and AUTO must
be set to OFF.
To set the unit to manual mode do the following:
Access the temperature controller’s secondary
menu.
1. Scroll through the menu until "lore" is
displayed.
2. Use the ⇑ and ⇓ arrow keys to set the
temperature controller to local. The yellow
REM light, on the temperature controller,
should extinguish.
3. Press ENTER to accept the change.
4. Access the Primary menu and scroll through
it until “Auto” is displayed.
5. Use the ⇑ and ⇓ arrow keys to change
“Auto” from ON to OFF. The red “MAN” LED
should now be lit.
6. The unit is now in manual mode.
7. Follow the above directions to change back
to remote mode and auto ON.
When the boiler is switched to BMS mode, the
AERCO BMS controls the firing rate. There are
no setup requirements to the boiler(s) in this
mode. To operate the boiler in manual mode,
the temperature controller must be taken out of
REMOTE mode and set to LOCAL mode
To set the unit in manual mode do the following:
1. Access the temperature controller’s
secondary menu.
2. Scroll through the menu until "lore" is
displayed.
3. Use the ⇑ and ⇓ arrow 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 temperature. 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. Air temperatures below this setting
allow the unit to fire. Air temperatures above this
setting prevent the boiler from firing.
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 ⇑ ⇓ arrow 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 ⇑ ⇓ arrow keys to set the desired
maximum outside air temperature that the
boiler is operational.
7. Press ENTER to accept the change