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SlimFit
Series 3
Single Boiler PRIORITY menus
Boiler Model, Altitude are critical settings.
Failure to set correctly could result in severe per-
sonal injury, death or substantial property damage.
Figure 32 SlimFit
single boiler PRIORITY menus (access menus from CONTRACTOR menu
MENU ITEM
x
x
x
INPUTS ASSIGNED
x
x
x
SYSTEM TYPE
TARGET MOD
x
x
x
SENSOR
x
x
x
TARGET ADJUST
x
x
x
SUPPLY MAX
x
x
x
SUPPLY MIN
x
x
x
OD RESET MAX
x
x
x
OD RESET MIN
x
x
x
VOLTS FOR MAX
x
x
x
VOLTS FOR MIN
x
x
x
BOOST TIME
x
x
x
SYSTEM OFF DIFF
x
x
x
SYSTEM ON DIFF
x
x
x
MAX BLR TEMP
– 54 –
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DESCRIPTION
• List of inputs assigned to this priority/system on the local boiler (appears as 1, 2, 3).
• Select the system type for this PRIORITY, based on the heating terminal units in the system.
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. See page 45.
• Select whether boiler modulates based on System Supply sensor or Boiler Outlet sensor.
• Select how target temperature is calculated by control: NONE (no reset, fixed target tempera-
ture), 0–10VDC (target temperature based on analog input from remote source), ODT (outdoor
reset operation). This setting cannot be selected if system type is DHW.
• Set SUPPLY MAX to the required supply water temperature 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 will not show if Target Adjust is selected as NONE.
• Appears if TARGET ADJUST is set to ODT. Outdoor temperature at which the target tempera-
ture reaches its minimum value – usually set at the balance point temperature for the building.
• Appears if TARGET ADJUST is set to ODT. Outdoor temperature at which the target tem-
perature reaches its maximum value – usually set at the outdoor design temperature for the
installation.
• Appears if 0–10V is selected for Target Adjust. Set the voltage at which SUPPLY MAX tem-
perature is required.
• Appears if 0–10V is selected for Target Adjust. Set the voltage at which SUPPLY MIN tempera-
ture is required. For voltages between Min and Max, the target temperature will be adjusted
on a linear curve.
• Every time the call for heat surpasses this duration of time the target temp will increase (boost)
up 10°F to a maximum temperature of SUPPLY MAX.
• This is the amount the temperature must rise above system target to turn the boiler OFF. (This
line does NOT appear if Target Mod Sensor is set to Boiler Out).
• This is the amount the temperature must drop below system target to turn the boiler ON. (This
line does NOT appear if Target Mod Sensor is set to Boiler Out).
• If the boiler outlet temperature approaches [MAX BOILER TEMP – BOILER ON DIFF] before
the system supply temperature reaches its target, the control will modulate the boiler based on
the boiler outlet temperature. The boiler will cycle and modulate based on the boiler ON and
OFF differential settings. (This line does NOT appear if Target Mod Sensor is set to Boiler Out).
Advanced Manual
:
%
1. Access contractor menus by pressing and holding the UP and
DOWN arrow keys at the same time for 7 seconds.
2. See Figure 25, page 46 for the screen sequences up to the
CONTRACTOR menu.
Part number 550-100-569/0321
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