Product Overview

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103859-12 - 8/19
MPO-IQ
Installation & Service Manual
High Limit IQ Option Cards add auxiliary temperature limit-rated controls to
MPO-IQ Boilers. High Limit IQ Option Cards plug into the IQ Option Panel and
connect to a system-mounted probe with a single Molex connection. High Limit
IQ Option Cards feature an adjustable set point and differential, as well as built-
in diagnostics. Manual Reset models are UL 353 for CSD-1 Compliance in US
and Canada.
Kit Includes:
• High Limit IQ Option Card
• Limit-rated probe with 48” lead
• 1/2” well
• Probe retainer clip
• Instructions
Major Features:
• UL 353 approved
• Error code LED and display
• Temperature display
• Electronic adjustment of high limit and differential
Hi Limit IQ Option Card (Auto Reset): P/N 102717-01
Hi Limit IQ Option Card (Manual Reset): P/N 102720-01
The Display Kit provides a 3.5” LCD multi-color Touch Screen display for mounting in the
plastic “hood” above the front door of any MPO-IQ Boiler. The Display Kit communicates
with the IQ Oil Boiler Control and all installed IQ Option Cards. All boiler settings, status,
and errors are displayed in full text on the bright, backlit display. All adjustments are
password protected to prevent unauthorized access. Display will turn red and flash in the
event of a boiler error or lock-out. Display features full-text explanations of all features and
settings, as well as help screens with diagnostics and troubleshooting information.
3.5” LCD Touch Screen Display: P/N 105915-01
Kit Includes:
• 3.5” Multi-color LCD touch
screen
• Display software
• Enviracom gateway
• Wiring harness connectors
• Mounting bracket
• Instructions
Major Features:
• Fully assembled kit requires only 4
mounting screws and a single Molex
type connection
• Adjusts all Outdoor Reset IQ Option
Card parameters with graphics and
help information screens
• Full English descriptive alarm displays
with Recommended Corrective Action
• Real time trend displays
• Extensive Help screens to aid
understanding of terminology and setup
EnviraCOM Thermostats:
Standard EnviraCOM thermostats provide “heat
demand” to the IQ Oil Boiler Control and alerts the home
owner of any boiler control faults.
Connected thermostats provide a red LED and display
the IQ Oil Boiler Control, Oil Primary Control or IQ
Option Card Error Codes. A home owner is alerted
to a problem even before the water is cold. When an
Outdoor Reset IQ Option Card is installed with a setback
thermostat, “leave” or “sleep” modes are used to shifts
the reset curve to save energy while the home is in a
reduced room temperature mode.
Honeywell VisionPro IAQ Setback Thermostat
(Honeywell P/N TH942lc1004)
Appendix A - Oil Burner IQ Control System (continued)