MPO-IQ Installation, Operating, and Service Instructions
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APPENDIX A – OIL BOILER IQ CONTROL SYSTEM (continued)
Installing the Outdoor Reset IQ Option Card is the simplest way to maximize the efciency
of any MPO-IQ Boiler. The Outdoor Reset IQ Option Card is a microprocessor-based control
that regulates the water temperature of the heating system based on the outdoor temperature. By
modulating the water temperature of the heating system, the MPO-IQ Boiler equipped with an
Outdoor Reset IQ Option Card will deliver annual fuel savings up to 16%, while increasing home
comfort. The Outdoor Reset IQ Option Card is simple to set up yet it includes a powerful list of
features that can be customized for any job.
Outdoor Reset IQ Option Card: P/N 102723-01
IQ Oil Boiler Control Operating Setpoint is normally set to the High Limit Setpoint. However, when an Outdoor Reset IQ Option
Card is installed the Operating Setpoint may be reduced to the outdoor reset or Domestic Hot Water (DHW) Setpoint. When an
Outdoor Reset IQ Option Card is added the following user dened setpoints are available:
• High Limit Setpoint - The High Limit becomes the upper limit for the operating setpoint. The operating setpoint can not
be set higher than this value. The High Limit is set to protect the boiler and hydronic system from excessive temperature.
• DHW Setpoint - The Operating Setpoint is set to the DHW Setpoint when the Outdoor Reset IQ Option Card DHW input
is energized. This setpoint is set equal to the Indirect Water Heater manufacturer's recommended water temperature.
• High Boiler Water Temperature - The High Boiler Water Temperature (also known as the "Boiler Water Design
Temperature") setpoint is set to the lowest boiler water temperature that will heat the home on the home's design day.
This adjustment typically depends on the type and quantity radiation (heating element) installed in the home.
Major Features:
• Selectable DHWP
• Selectable/adjustable DHWP protection
• Selectable/adjustable boost feature
• Simple adjustment of reset curve
Kit Includes:
• Outdoor Reset IQ Option Card
• Outdoor temperature sensor
• Instructions
IQ Option Panel: P/N 102291-01
The IQ Option Panel works together with the IQ Oil Boiler Control to provide an easy
and convenient means to add factory-engineered auxiliary boiler control features.
When installed into the IQ Option Panel, IQ Option Cards provide plug-'n-play
high temperature limit, low water cut-off and outdoor reset controls. A separate
3-digit LED readout displays settings, status and diagnostic information for all
installed IQ Option Cards making them simpler and functionally superior to stand
alone auxiliary controls. IQ Option Cards are available for the following features:
• Outdoor Air Reset with Domestic Hot Water Demand
• Auxiliary High Temperature Limit (available in auto reset or manual reset
versions)
• Low Water Cut-off (available in auto reset or manual reset versions)
LWCO IQ Option Card (Auto Reset): P/N 102711-01
LWCO IQ Option Card (Manual Reset): P/N 102714-01
LWCO IQ Option Cards add a low water cut-off function to MPO-IQ Boilers. LWCO IQ
Option Cards plug into the IQ Option Panel and connect to the system-mounted sensor with
a single-wire connection. LWCO IQ Option Cards feature built-in diagnostics, probe signal
strength display, and include a “Test” and “Reset” feature in compliance with UL 353 and CSA
22.2 for CSD-1 Compliance in US and Canada.
Kit Includes:
• LWCO IQ Option Card
• 3/4” NPT level sensor
• 36” wire sensor connector
• Instructions
Major Features:
• UL 353 approved
• Displays signal strength
• Warns when probe cleaning required