Install Instructions

&IGURE Evergreen BASIC mode PRIORITY options (USER MODE must be set to BASIC)
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Part number 550-100-131/0715
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GAS-FIRED WATER BOILER — Boiler Manual
PRIORITY 1, 2, 3 menus, BASIC mode
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CALSETTINGS
Failure to set correctly could result in
severe personal injury, death or substantial property
damage.
1. Access contractor menus by pressing and holding the UP and
DOWN arrow keys at the same time for 7 seconds.
2. See Figure 71, page 73 for the screen sequences up to the
CONTRACTOR menu.
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INPUTS ASSIGNED
s Lists all the inputs already assigned to this PRIORITY.
Inputs will be listed as 1, 2, 3.
s Shows NONE if there are no inputs assigned to this
priority .
SYSTEM TYPE
s Select the system type for this PRIORITY, based
on the heating terminal units in the system (see
Figure 70, page 72). Use the CUSTOM selection to set
the control for a different system type. The factory preset
values for SUPPLY MAX, SUPPLY MIN, OD RESET MAX
and OD RESET MIN are chosen based on the normal best
setting for the terminal units.
TARGET MOD
SENSOR
s Choose SYSTEM SUPPLY or BOILER OUT to determine
which will be the primary temperature sensor. The control
will modulate boiler input to reach the TARGET tempera-
ture. (Default is System Supply.) If system sensors are not
used, boiler defaults to using heat exchanger outlet sensor
in place of system sensor.
TARGET ADJUST
s Select how target temperature is calculated by control:
NONE (no reset, fixed target temperature), 0-10V (target
temperature based on analog input from remote source),
ODT (outdoor reset operation; default setting).
SUPPLY MAX
s Set SUPPLY MAX to the required supply water tempera-
ture for the system at design maximum heat loss (typically
180 °F for finned tube baseboard on new installations.)
SUPPLY MIN
s SUPPLY MIN should equal the desired minimum supply
water temperature for the system. This line will not show
if Target Adjust is selected as NONE.
OD RESET MAX
s OD RESET MAX is the outdoor temperature at which the
target temperature reaches its minimum (SUPPLY MIN).
s This line will display as VOLTS FOR MAX if 0-10V is
selected as TARGET ADJUST.
s This line does not appear if TARGET ADJUST is set to
NONE.
OD RESET MIN
s OD RESET MIN means the outdoor temperature at
which the target temperature reaches its maximum value
(SUPPLY MAX).
s OD RESET MIN should equal the ODT (outdoor design
temperature) for the installation’s location.
s This line does not appear if TARGET ADJUST is set to
NONE.