Nortek R6GF Series, Руководство по установке

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6. Remove the silicone rubber tube from the collector pan to
the pressure switch.
7. Remove 4 nuts securing the combustion blower to the collector
pan. Remove the combustion blower.
8. Remove all screws securing the collector pan to the unit.
Remove the collector pan from the unit.
CAUTION:
To prevent damage to the unit or internal components,
it is recommended that two wrenches be used when
loosening or tightening nuts. Do not over tighten!
9. Using 2 wrenches, separate the ground-joint union in the
gas supply piping at the unit.
10. Remove the piping between the gas valve and the ground-
joint union, if necessary.
11. Remove the screws that secure the burner assembly in
place and the burner assembly. BE EXTREMELY CAREFUL
NOT TO DAMAGE THE IGNITOR WHILE REMOVING THE
BURNER ASSEMBLY.
12. Attach a round wire brush to a length of high grade stainless
steel cable, such as drain clean-out cable. Attach the other
end of the spring cable to a variable speed reversible drill.
Slowly insert and rotate the cable into the top portion of
the heat exchanger. Operate the drill alternating between
forward and reverse, working the cable in and out several
times to obtain sufficient cleaning. Repeat this process at
each exchanger tube.
13. Remove all loosened debris from the heat exchanger tubes
using high pressure air and vacuum cleaner.
14. Using a light, check the condition of the upper and lower
sections of the heat exchanger tube.
15. Inspect the burners and if necessary, clean them carefully
with a soft wire brush and/or the nozzle of a vacuum cleaner.
DO NOT DAMAGE THE IGNITOR OR FLAME SENSOR
WHILE CLEANING THE BURNER.
16. Replace all the parts in reverse order from which they were
removed.
17. Follow the operating instructions found on the right side
door and the User’s Information Manual to return the unit
to operation.
Cleaning of Burners
If the burners require cleaning, follow the steps below.
1. Shut off the gas supply to the unit either at the meter or at a
manual valve in the supply piping.
2. Turn off all power to the unit and set the thermostat to the
lowest temperature setting.
3. Remove the louvered control access panel from the unit.
4. Turn the gas control knob to the OFF position. See
Figure
10 (page 26) for gas valve shut off instructions.
5. Disconnect the wires from the gas valve, ignitor, and flame
sensor.
CAUTION:
To prevent damage to the unit or internal components,
it is recommended that two wrenches be used when
loosening or tightening nuts. Do not over tighten!
6. Using two wrenches, separate the ground-joint union in the
gas supply piping at the unit.
7. Remove the piping between the gas valve and the ground-
joint union (if applicable).
8. Remove all screws securing the burner assembly to the
furnace.
9. Carefully remove the burner assembly from the furnace.
DO
NOT DAMAGE THE IGNITER WHILE REMOVING THE
BURNER ASSEMBLY.
10. Inspect the burners for accumulated dust or debris. If
necessary carefully clean them with a soft wire brush and a
vacuum cleaner. DO NOT DAMAGE THE IGNITER WHILE
CLEANING THE BURNER.
11. Replace all the parts in reverse order from which they were
removed.
12. Follow the lighting instructions found on the lower unit door
to return the unit to operation.
13. Verify proper operation after servicing.
REPLACEMENT PARTS
Replacement parts are available through your distributor.
Please have the complete model and serial number of the
unit when ordering replacement parts.
ELECTRICAL:
• Capacitors • Pressure Switches
• Compressors • Relays
• Contactors • Temperature Limit Switches
• Gas Valves • Thermostats
• Ignition Controls • Time Delay Relays
• Ignitors/Flame Sensors • Transformers
MOTORS:
• Blower Motor
• Fan Motor
• Inducer Blower Motor
COMPONENTS:
• Blower Assembly • Fan Grille
• Burner Manifold • Filter/Driers
• Burners/Orifices • Gaskets
• Cabinet Panels • Heat Exchanger
• Expansion Valves
COMPONENT FUNCTIONS
Comfort Alert™ Diagnostics -The Comfort Alert diagnostics
module troubleshoots heat pump and air conditioning system
failures and accurately detects the cause of electrical and
system related failures without any sensors. A flashing LED
indicator communicates the ALERT code to quickly direct the
technician to the root cause of a problem.
Flame Roll-Out Control - The flame roll-out control acts to verify
that the burner flame is being drawn into the heat exchanger
tubes. If the burner flame is not being drawn into the heat
exchanger tubes, the roll-out control will open within several
seconds and the integrated control diagnostic light will flash
one time. If the limit opens, the integrated control diagnostic
will flash one time. The circulating air blower will continue to
operate while the flame roll-out control is open.
Flame Sensor - The flame sensor acts to prove that flame has
carried over from the ignitor to the right-most burner. If no flame
is sensed, the unit will be shut down automatically.
Dual Pressure Switch - The dual pressure switch verifies that
the inducer motor is drawing the combustion gases through
the heat exchanger tubes and venting the gases through the
vent system for both high and low fire conditions.
Gas Valve - The gas valve controls the flow of gas to the burners
in both low and high fire. When the gas valve is energized it