Condensate Trap And Drain System (Qualified Servicer Only); Flame Sensor (Qualified Servicer Only); Flue Passages (Qualified Servicer Only); Before Leaving An Installation - Amana GUCA Installation Instructions Manual

CONDENSATE TRAP AND DRAIN SYSTEM
(QUALIFIED SERVICER ONLY)
Annually inspect the drain tubes, drain trap, and field-
supplied drain line for proper condensate drainage. Check
drain system for hose connection tightness, blockage, and
leaks. Clean or repair as necessary.

FLAME SENSOR (QUALIFIED SERVICER ONLY)

Under some conditions, the fuel or air supply can create a
nearly invisible coating on the flame sensor. This coating
acts as an insulator causing a drop in the flame sense
signal. If the flame sense signal drops too low the furnace
will not sense flame and will lock out. The flame sensor
should be carefully cleaned by a qualified servicer using
emery cloth or steel wool. Following cleaning, the flame
sense signal should be as indicated in the Specifications
Sheet.

FLUE PASSAGES (QUALIFIED SERVICER ONLY)

The heat exchanger flue passageways should be inspected
at the beginning of each heating season. If necessary,
clean the passageways as outlined below.
1. Turn OFF the electrical power and gas supply to the
furnace.
2. Disconnect the gas line and remove the burner/ mani-
fold assembly by removing the screws securing the
assembly to the partition panel.
3. Disconnect the flue pipe system from the induced draft
blower.
4. Remove the induced draft blower and, drain and pres-
sure tap hoses from the recuperator coil front cover.
5. Remove the recuperator coil front cover to expose the
coil tubes and turbulators.
6. Remove the recuperator coil turbulators individually by
slowly pulling each turbulator forward firmly.
7. Clean the recuperator coil tubes using a long handle
wire brush, such as a gun cleaning brush.
8. Clean the primary heat exchanger tubes using a wire
brush attached to a length of high grade stainless steel
cable, such as drain cleanout cable. Attach a variable
speed reversible drill to the other end of the cable.
Slowly rotate the cable with the drill and insert it into one
of the heat exchanger tubes. While reversing the drill,
work the cable in and out several times to obtain
sufficient cleaning. Repeat for each tube.
9. Clean residue from furnace using a vacuum cleaner.
10. Replace the parts removed in the previous steps in
reverse order.
11. Turn on electrical power and gas to furnace. Check for
leaks and proper unit operation.
12. Severe heat exchanger fouling is an indication of an
operational problem. Perform the checks listed in
Section XIV, Startup Procedure and Adjustments to
reduce the chances of repeated fouling.
®
is a trademark of Maytag World-
wide N.V. and is used under license to Goodman
Company, L.P. All rights reserved.
44
XX. Before Leaving
an Installation
•
Cycle the furnace with the thermostat at least three
times. Verify cooling and fan only operation.
•
Review the Owner's Manual with the homeowner and
discuss proper furnace operation and maintenance.
•
Leave literature packet near furnace.
XXI. Repair &Replacement
•
When ordering any of the listed functional parts, be
sure to provide the furnace model, manufacturing, and
serial numbers with the order.
•
Although only functional parts are shown in the parts
list, all sheet metal parts, doors, etc. may be ordered by
description.
•
Parts are available from your distributor.
Functional Parts List-
Gas Valve
Gas Manifold
Natural Gas Orifice
Propane Gas Orifice
Igniter
Flame Sensor
Rollout Limit Switch
Primary Limit Switch
Auxiliary Limit Switch
Pressure Switch
Induced Draft Blower
Door Switch
Parts
Blower Motor
Blower Wheel
Blower Mounting Bracket
Blower Cutoff
Blower Housing
Capacitor
Heat Exchanger
Recuperator Coil
Coil Front Cover
Integrated Control Module
Transformer