Lennox ML180DFE SERIES Installation and operation manual

Page 1
UNIT INFORMATIONUNIT INFORMATION
Service Literature
©2016 Lennox Industries, Inc.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at disconnect
switch(es). Unit may have multiple power
supplies.
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional
HVAC installer or equivalent, service agency, or the
gas supplier.
    󰀩  
      
      




      

        


󰀨
        
        
-

       


CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
TABLE OF CONTENTS










ML180DFE


ML180DFE SERIES UNITS


SPECIFICATIONS
Gas
Heating
Performance
Model No. ML180DF045E36A ML180DF070E36A ML180DF070E36B
1 80% 80% 80%
   
   
   

   
High Static - in. w.g.   
Connections
in.
   
   
Indoor
Blower
   
   
   
   
   
Electrical Data  
   
   
Shipping Data    

1󰀩
SPECIFICATIONS
Gas
Heating
Performance
Model No. ML180DF090E48B ML180DF110E60C
1 80% 80%
  
  
  

  
High Static - in. w.g.  
Connections
in.
  
  
Indoor
Blower
  
  
  1
  
  
Electrical Data  
  
  
Shipping Data   

1󰀩


OPTIONAL ACCESSORIES - ORDER SEPARATELY
“A” Width
Models
“B” Width
Models
“C” Width
Models
CABINET ACCESSORIES
Downow Combustible Flooring Base 11M59 11M60 11M61
CONTROLS
iComfort®M30 Smart Wi-Fi Thermostat 15Z69 15Z69 15Z69
Remote Outdoor Air Temperature Sensor X2658 X2658 X2658
Blower Relay Kit (for two-stage outdoor units) 85W66 85W66 85W66
Furnace Twinning Panel Y3653 Y3653 Y3653
Furnace Twinning Kit 16W72 16W72 16W72
FILTERS
1 Downow Filter Cabinet 51W06 51W07 51W08
 -    
NIGHT SERVICE KIT
Night Service Kit 84W47 84W47 84W47
1
BLOWER DATA
ML180DF045E36A PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High

Medium-High

Medium

Medium-Low

Low

cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
    180    110  100
        100  
        110  
          
          100
          
   1000       
      180    
          
ML180DF070E36A PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High

Medium-High

Medium

Medium-Low

Low

cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
       1110   
          
        181  
          
     1010     
          
          
          


ML180DF070E36B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High

Medium-High

Medium

Medium-Low

Low

cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

          
       1110   100
          
       1000   
   1110     180  
          
   1000       
          
ML180DF090E48B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High

Medium-High

Medium

Medium-Low

Low

cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
          
          
          
          
          
          180
          
         810 
     1080  1000   
ML180DF110E60C PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High

Medium-High

Medium

Medium-Low

Low

cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
          180
          
          
          
          
          
   1800       
         1100 
          
BLOWER DATA


PARTS ARRANGEMENT
Primary Limit
(under combustion
air inducer)
Control Box
(includes integrated control,
interlock switch and transformer)
Gas Valve
Burner Box
(includes sensor, ignitor
and rollout switches)
Combustion
Air Inducer
Blower Access Panel
Heating Compartment
Access Panel
Heat Exchanger
Flue Chase
Blower Assembly
Secondary Limit
FIGURE 1


I-UNIT COMPONENTS
        



ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
Electrostatic discharge can a󰀨ect
electronic components. Take precautions
to neutralize electrostatic charge by
touching your hand and tools to metal
prior to handling the control.
1. Control Transformer (T1)


          

2. Door Interlock Switch (S51)
       


NOTE - The door interlock switch is a safety switch. Do
not by-pass or jumper switch.
CONTROL BOX
DOOR INTERLOCK
SWITCH (S51)
INTEGRATED CONTROL
(A92)
TRANSFORMER
(T1)
CIRCUIT
BREAKER
(CB8)
FIGURE 2
3. Circuit Breaker (CB8)

      -

-


4. Integrated Control (A92)
103217-03 & 107163-01
WARNING
Shock hazard.
Disconnect power before servicing. Control is not
eld repairable. If control is inoperable, simply
replace entire control.
Can cause injury or death. Unsafe operation will
result if repair is attempted.
        
-
    

-
-
-

        
       

Electronic Ignition (Figure 4)
-
        
         
       

󰀨
       -
-
      -

       
          
-



        
          

-



TABLE 1
4-Pin Terminal Designation
 
1
 
 
 
TABLE 2
12-Pin Terminal Designations
 
1


 
 
 
 
 
8
 
10 
11 
 
TABLE 3
1/4” Quick Connect Terminals
 
 
 
 
 
 
 
3/16” Quick Connect Terminals
 
 
 



 
 
BLOWER OFF DELAY
RED LED RECALL BUTTON
IGNITION CONTROL 103217-03
FIGURE 3
Heating Blower Off
Delay Selector Switch
Diagnostic LED
Push Button
Error Recall
IGNITION CONTROL 107163-01
PARKS
WCRGY
HUM24
FS
24VCOM
COOL
HEAT
FAN

Page 8
TABLE 4
Ignition Control 103217-02
RED LED
Flash Code2Diagnostic Codes / Status of Furnace
Off No power to control or board fault detected
Heartbeat
1
Normal Operation - Idle, Continuous Fan, Cool
1Reverse Line Voltage Polarity
2Improper Earth Ground
3Burner failed to light, or lost flame during heat demand
4Low Flame Signal - check flame sensor
5Watchguard - burner failed to light, exceeded maximum number of retries or recycles.
6Ignitor Circuit Failure - not available on this control
7Primary or Secondary Limit Open or Watchguard Mode - Limit Switch Open longer than 3 minutes
8Rollout Switch Open
9Pressure Switch failed to close or opened during heat demand
10 Watchguard - Pressure Switch opened 5 times during one heat demand
11 Pressure Switch stuck closed prior to activation of combustion air inducer
12 Flame Sensed without gas valve energized
13 Low Line Voltage
Notes
Note 1A ”Heartbeat” is indicated by a ”Slow Flash” - 1 sec on 1 sec off, repeating
Note 2Error codes are indicated by a “rapid flash” - the LED flashes X times at ½ second on ½ second off, remains off for 3
seconds then repeats.
Note3
Last 10 error codes are stored in memory including when power is shut off to the unit. - To recall, press and release button,
most recent will be displayed first, LED off for 3 sec, then next error code is displayed, etc. To clear error codes, depress
and hold button longer than 5 seconds.


TABLE 5
Ignition Control 103217-03



󰀨 
1
 
1
 
 
 


 


8
 
10 
11 
 
 

 󰀨
 
󰀨󰀨

󰀨
󰀨



Page 10
Ignition Control 107163-01
RED LED Flash Code Diagnostic Codes / Status of Furnace
󰀨 
 
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1
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
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
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 󰀨
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