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Outdoor Cutoff
Options: Off, 30ºF/0ºC to 75ºF/25ºC, On
SET
/Set Point/Cutoff
SET
/<Out. Reset>/Cutoff
• The outdoor and Cutoff temperatures can be viewed from the default screen by clicking
the ▲ or ▼ buttons.
• In heating, when the outdoor temperature falls to the adjustable outdoor Cutoff
temperature, the MC Elite will control the System relay to provide heat. However, in
cooling, when the outdoor temperature rises to the adjustable outdoor Cutoff temperature,
the MC Elite will control the System relay.
• The outdoor Cutoff setting has a built-in 2F° that is add to the outdoor Cutoff when in
heating mode. However, it is subtracted from the outdoor Cutoff when in cooling mode.
• For example; In heating, when the outdoor temperature rises to the outdoor Cutoff plus
a 2°F differential, the MCA/MCP Elite will modulate the output to 0%. The MCF Elite will
energize the Close relay for six minutes to guarantee valve closure. The System relay will
remain active for the Run-On delay then de-energize.
• In addition to the temperature range of the outdoor Cutoff setting, it can be set to ON or
OFF. If ON is selected, the System relay will run regardless of the Outdoor temperature
and the boilers will be active to hold the calculated water temperature. If OFF is selected,
the System and Boiler relays will always be off.
Minimum target
(Available when Control Mode = Outdoor Reset)
Options: From 70ºF/21ºC to 170ºF/77ºC
/Set Point/<Out. Reset>/Min. Tgt
SET
• The Minimum Target Temperature must be set to the boiler manufacturer's specification.
The MC Elite will calculate the Target based on the Outdoor temperature, the Reset Ratio,
and the Offset value. The MC Elite will control the boiler/Valve to hold the higher of either
the calculated temperature or the Minimum Target temperature.
• The Minimum Target temperature must be at least 20°F lower than the Maximum Target
temperature. See next setting.
Maximum target
(Available when Control Mode = Outdoor Reset)
Options: From 90ºF/32ºC to 240ºF/116ºC
/Set Point/<Out. Reset>/Max. Tgt
SET
• This is the highest Target temperature the MC Elite will circulate through the system.
• When used in a radiation system, it should be set according to the tubing or floor
manufacturer's specification.
• The Maximum Target temperature must be at least 20°F higher than the Minimum Target
temperature. See previous setting.
setback
Options: varies based on sensor type . see "sensor type table" on page 6 .
/Settings>/Setback.
SET
• The Setback feature can be used to provide the MC Elite with a lower Target in heating or
higher Target in cooling when less output is required during nights or weekends.
• The Setback Target will appear on the main display indicating SBC TGT=140 o F.
• For example; in heating, when the calculated temperature is 160°F and the Setback is set
to 20°F, a setback call will change the Target to (160°F - 20°F) 140°F.
• If Boost was enabled, it will run after the Setback ends. See "Boost" on page 16.
• The Setback is activated by closing/shorting the T3+ and T3- terminals using an external
timer, control, or a switch. See "Wiring the Setback/Boost" on page 7.
MC-Elite Installation and Operation Manual
Default: 70ºF/21ºC
in set point
in reset
80 F
Default: 80ºF/27ºC
240 F
Default: 240ºF/116ºC
10 F
Cutoff:
70
Min Target:
Max Target:
Setback:
15
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