Approvals:
IAS Design Certified: Report No. C2030018.
Fig. 1. Approximate ignition module dimensions in in. (mm).
REVIEW THE INSTALLATION
WARNING
FIRE OR EXPLOSION HAZARD. CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH.
Follow these warnings exactly:
1. Review the installation as outlined in this section.
2. Plan for frequent maintenance as described in the Maintenance section.
IMPORTANT
The S8910U is not designed to replace the following:
Intermittent pilot ignition controls.
Direct spark ignition controls.
Proven 120 Vac hot surface ignition controls.
24 Vac element hot surface ignition controls.
240 Vac input/120 Vac element hot surface ignition controls.
120 Vac timed warmup hot surface ignition controls with:
— Ignition trial time shorter than four seconds.
— Ignition trial time longer than twelve seconds.
— Edge connectors rather than male quickconnects.
When hot surface ignition systems are used on central heating equipment in barns, greenhouses, and commercial
properties and on heating appliances such as commercial cookers, agricultural equipment, industrial heating
equipment and pool heaters, heavy demands are made on the controls. Special steps may be required to prevent
nuisance shutdowns and control failure due to frequent cycling, and severe environmental conditions related to
moisture, corrosive chemicals, dust or excessive heat. These applications require Honeywell Home and Building
Control Engineering review; contact your Honeywell Sales Representative for assistance.
Review the following conditions that can apply to your specific installation and take the precautionary steps
suggested.
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