10
DO NOT open the loading door too quickly to avoid blowbacks which could cause severe
burns.
ALWAYS check water level, aquastat and damper setting for a proper and safe operation.
Lock doors with your own locks as required.
Never allow unauthorized opening, filling or servicing of the furnace
DO NOT touch any part on the front of the Outdoor Water Furnace, which are not insinuated
to avoid skin burns.
ALWAYS store ashes in tightly covered metal containers away from combustible materials.
It is not designed to be used as an incinerator.
MAINTENANCE
Optimizer 250 Outdoor Water Furnace is designed to operate for many years with the least
amount of maintenance. Good housekeeping practices and observance of the instructions
contained in this Manual would assist you in maintaining the outdoor water furnace in good
and safe working conditions.
ALWAYS SHUT OFF THE POWER SUPPLY prior to performing any service or maintenance work.
Refer to the SAETY WARNINGS and OPERATING INSTRUCTIONS prior to performing any or
maintenance work.
If circulating pump(s) is seized due to a prolonged shutdown, removed the screw in the center
of the motor and turn the motor shaft with a screwdriver to loosen it.
The Primary and secondary air have to be manually adjusted to the desired amount of air required.
This is done simply by turning the handles (as previously described on pages 8 and 9) on the primary
and secondary air flow adjuster. This blower fan assembly should not be altered in any way for
increased fire.
Primary air adjust
Damper Lid Actuator
Damper Lid
Air Box
Secondary air adjust
McMillan Blower fan