Maintenance; General; Advise The Customer; Unit Maintenance - Daikin Maverick I Installation And Maintenance Manual

Maintenance

General

Maintenance

Advise The Customer

1
Change the air filters regularly. The heating system
operates better, more efficiently and more economically.
2
Except for the mounting platform, keep all combustible
articles three feet from the unit and exhaust system.
3
IMPORTANT: Replace all blower doors and
compartment cover after servicing the unit. Do not
operate the unit without all panels and doors securely in
place.
4
Do not allow snow or other debris to accumulate in the
vicinity of the unit.

Unit Maintenance

Furnace Section

The unit's furnace should operate for many years without
excessive scale build-up in flue passageways. However, it is
recommended that a qualified installer, service agency, or the
gas supplier annually inspect the flue passageways, the exhaust
system and the burners for continued safe operation, paying
particular attention to deterioration from corrosion or other
sources.
If during inspection the flue passageways and exhaust system
are determined to require cleaning, the following procedures
should be followed (by a qualified installer, service agency, or
gas supplier):
Power supply to unit must be disconnected before making
field connections. To avoid electrical shock, personal injury or
death, be sure to rigorously adhere to field wiring procedures
regarding proper lockout and tagout of components.
1
Turn off the electrical power to the unit and set the
thermostat to the lowest temperature.
2
Shut off the gas supply to the unit either at the meter or at
manual valve in the supply piping.
3
Remove the furnace controls access panel and the control
box cover.
4
Disconnect the gas supply piping from the gas valve.
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DANGER
5
Disconnect the wiring to the induced draft blower motor,
gas valve, flame sensor, and flame roll-out control, and
ignitor cable. Mark all wires disconnected for proper
reconnection.
Label all wires prior to disconnection when servicing controls.
wiring errors can cause improper and dangerous operation
resulting in fire, electrical shock, property damage, personal
injury or death.
6
Remove the screws (4) connecting the burner tray to the
heat exchanger mounting panel.
7
Remove the burner tray and the manifold assembly from
the unit.
8
Remove the screws (10) connecting the two induced
draft blowers to the collector box and screws (12)
connecting the inducer mounting plate to the heat
exchanger center panel. Remove the induced draft
blower and the collector box from the unit.
9
Remove the turbulators from inside the heat exchangers
by inserting the blade of a screwdriver under the locking
tabs. Pop the tabs out of the expanded grooves of the heat
exchanger. Slide the turbulators out of the heat
exchangers.
10
Direct a water hose into the outlet of the heat exchanger
top. Flush the inside of each heat exchanger tube with
water. Blow out each tube with air to remove excessive
moisture.
11
Reassemble (steps 1 through 9 in reverse order). Be
careful not to strip out the screw holes used to mount
the collector box and inducer blower. Replace inducer
blower gasket and collector box gasket with factory
replacements if damaged.
Holes in the exhaust transition or heat exchanger can cause
toxic fumes to enter the home. The exhaust transition or heat
exchanger must be replaced if they have holes or cracks in
them. Failure to do so can cause carbon monoxide poisoning
resulting in personal injury or death.
The manufacturer recommends that a qualified installer,
service agency or the gas supplier visually inspect the burner
flames for the desired flame appearance at the beginning of the
heating season and approximately midway in heating season.
The manufacturer also recommends that a qualified installer,
service agency or the gas supplier clean the flame sensor with
steel wool at the beginning of the heating season.
DANGER
DANGER
Daikin IM 972-1