Product Overview

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MPO-IQ
Installation & Service Manual
Installing the Outdoor Reset IQ Option Card is the simplest way to maximize the efficiency
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 105648-01
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 defined 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
Appendix A - Oil Burner IQ Control System (continued)