Weil-McLain 550 MBH Nstallation And Operation Manual page 74

®
SlimFit Series 3
PRIORITY 1, 2, 3 menus, BASIC mode
Failure to set correctly could result in
severe personal injury, death or substantial property
damage.
SlimFit BASIC mode PRIORITY options (USER MODE must be set to BASIC)
Screens shown above are typical
only. Actual screens depend on
control settings chosen.
74
COMMERCIAL CONDENSING GAS
INPUTS ASSIGNED
SYSTEM TYPE
TARGET MOD
SENSOR
TARGET ADJUST
SUPPLY MAX
SUPPLY MIN
OD RESET MAX
OD RESET MIN
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FIRED WATER BOILER
1. Access contractor menus by pressing and holding the UP and
DOWN arrow keys at the same time for 7 seconds.
2. See Figure 61, page 72 for the screen sequences up to the
CONTRACTOR menu.
Lists all the inputs already assigned to this PRIORITY.
Inputs will be listed as 1, 2, 3.
Shows NONE if there are no inputs assigned to this
priority .
Select the system type for this PRIORITY, based
on the heating terminal units in the system (see
Figure 59, page 71). 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.
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.
Not adjustable in Basic Mode, see Advanced Manual for
information on adjusting this parameter.
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).
Not adjustable in Basic Mode, see Advanced Manual for
information on adjusting this parameter.
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 should equal the desired minimum supply
water temperature for the system.
This line is not shown on priorities configured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
OD RESET MAX is the outdoor temperature at which the
target temperature reaches its minimum (SUPPLY MIN).
This line is not shown on priorities configured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
OD RESET MIN means the outdoor temperature at
which the target temperature reaches its maximum value
(SUPPLY MAX).
OD RESET MIN should equal the ODT (outdoor design
temperature) for the installation's location.
This line is not shown on priorities configured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
Boiler Manual
Part number 550-100-168/0516