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DM090
York DM090 User Manual
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127408-YIM-B-0606
Unitary Products Group
51
FIGURE 30: UN
IT CONTROL BOARD
T
ABLE 53:
IGNITION CONTROL FLASH
CODES
FLASHES
F
AUL
T CONDITIONS
CHECK
STEADY ON
Control F
ailure
Control
HEARTBEA
T
Normal Oper
ation
1
Not Applicab
le
2
Pressure Swit
ch
S
tuck Closed
Pressure Swit
ch
3
Pressure Swit
ch Failed
To
C
l
o
s
e
V
enter
Pressure Swit
ch
V
ent Bl
ocked
4
Limit Switch
Open
Main Limit
AUX Limit
5
Flame Pres
ent With Gas
Off First
S
tage Gas V
alve
Energized With W1
Off
Second S
tage Gas V
alve
Energized With Fi
rst
St
a
g
e
Gas V
alve Off
Gas V
alve
6
Ignition Lock
out
Gas Flow
Gas Pres
sure
Gas V
alve
Flame Sensor
STEADY OFF
No Power Or Control
Failure
24V
AC or Control
Check
Alarm
History
Reset
Al
l
ASCDs
f
or
One
Cycl
e
Non
Alar
m
Conditi
on
Green
LED
Fl
ash
ing
Current
Al
arm
Fla
shed
Red
LED
50
52
Table of Contents
Default Chapter
2
Table of Contents
2
General
5
Safety Considerations
5
Inspection
5
Reference
6
Renewal Parts
6
Approvals
6
Nomenclature
7
Installation
8
Installation Safety Information
8
Preceding Installation
8
Unit Shipping Bracket
8
Condenser Covering
8
Compressor Section
8
Limitations
9
Location
10
Rigging and Handling
10
Unit 4 Point Load
10
Unit Voltage Limitations
10
Unit Temperature Limitations
10
Clearances
11
Unit 6 Point Load
11
Unit Center of Gravity
11
Unit Weight
11
Point Load Weight
11
Unit Dimensions
12
Unit Height
12
Unit Clearances
12
Bottom Duct Openings (from Above)
13
Rear Duct Dimensions
13
Ductwork
14
Duct Covers
14
Roof Curbs
14
Condensate Drain
15
Compressors
15
Filters
15
Side Panels with Hole Plugs
15
Return Downflow Plenum with Panel
15
Discharge Panel in Place
15
Thermostat Wiring
16
Power and Control Wiring
16
Power Wiring Detail
16
Control Wire Sizes
16
Electronic Thermostat Field Wiring
17
Field Wiring Disconnect - Cooling Unit with or Without Electric Heat
18
Field Wiring Disconnect - Cooling Unit
18
Electrical Data 7-1/2 Ton
19
Electrical Data 10 Ton
19
Electrical Data 12-1/2 Ton
20
Physical Data
20
Optional Electric Heat
21
Optional Gas Heat
21
Bottom Entry Gas Piping
21
Gas Piping
21
Side Entry Gas Piping
21
Electric Heat Minimum Supply Air Cfm
21
Gas Application Data
21
Gas Connection
22
Gas Pipe Sizing - Capacity of Pipe
22
Lp Units, Tanks and Piping
23
Vent and Combustion Air
23
Options/Accessories
23
Economizer
23
Electric Heat
23
Motorized Outdoor Damper
23
Power Exhaust
23
Rain Hood
23
Economizer and Power Exhaust Set Point Adjustments and Information
24
Enthalpy Set Point Adjustment
24
Indoor Air Quality Aq
24
Minimum Position Adjustment
24
Power Exhaust Damper Set Point (with or Without Power Exhaust)
24
Enthalpy Set Point Chart
25
Honeywell Economizer Control W7212
25
Phasing
26
Blower Rotation
26
Belt Tension
26
Belt Adjustment
26
Supply Air Limitations
26
Blower Performance 7-1/2 Ton Standard Motor - Side Duct (Imperial)
27
Blower Performance 7-1/2 Ton Standard Motor - Side Duct (Metric)
27
Blower Performance 7-1/2 Ton Optional Motor - Side Duct (Imperial)
27
Blower Performance 7-1/2 Ton Optional Motor - Side Duct (Metric)
27
Blower Performance 10 Ton Standard Motor - Side Duct (Imperial)
28
Blower Performance 10 Ton Standard Motor - Side Duct (Metric)
28
Blower Performance 10 Ton Optional Motor - Side Duct (Imperial)
28
Blower Performance 10 Ton Optional Motor - Side Duct (Metric)
29
Blower Performance 12-1/2 Ton - Side Duct (Imperial)
29
Blower Performance 12-1/2 Ton - Side Duct (Metric)
29
Yim-B
29
Blower Performance 7-1/2 Ton
30
Blower Performance 7-1/2 Ton Standard Motor - Downshot (Metric)
30
Blower Performance 7-1/2 Ton Optional Motor - Downshot (Imperial)
30
Blower Performance 7-1/2 Ton Optional Motor - Downshot (Metric)
31
Blower Performance 10 Ton Standard Motor - Downshot (Imperial)
31
Blower Performance 10 Ton Standard Motor - Downshot (Metric)
31
Blower Performance 10 Ton Optional Motor - Downshot (Imperial)
32
Blower Performance 10 Ton Optional Motor - Downshot (Metric)
32
Blower Performance 12-1/2 Ton - Downshot (Imperial)
33
Blower Performance 12-1/2 Ton - Downshot (Metric)
33
Indoor Blower Specifications
33
Air Balance
34
Checking Air Quantity
34
Method One
34
Method Two
34
Dry Coil Delta P 50" Cabinet
35
Dry Coil Delta P 42" Cabinet
35
Supply Air Drive Adjustment
36
Additional Static Resistance 50" Cabinet
37
Additional Static Resistance 42" Cabinet
37
Additional Static Resistance 50" Cabinet
38
Additional Static Resistance 42" Cabinet
38
Motor Sheave Datum
39
Operation
40
Sequence of Operations Overview
40
Cooling Sequence of Operation
40
Continuous Blower
40
Intermittent Blower
40
No Outdoor Air Options
40
Economizer with Single Enthalpy Sensor
40
Economizer with Dual Enthalpy Sensors
40
Economizer with Power Exhaust
41
Motorized Outdoor Air Dampers
41
Cooling Operation Errors
41
High-Pressure Limit Switch
41
Low-Pressure Limit Switch
41
Freezestat
41
Low Ambient Cooling
41
Safety Controls
41
Compressor Protection
42
Flash Codes
42
Reset
42
Electric Heating Sequence of Operations
42
Electric Heat Operation Errors
42
Temperature Limit
42
Safety Controls
42
Limit Switch (Ls)
42
Electric Heat Anticipator Setpoints
42
Electric Heat Limit Setting
42
Gas Heating Sequence of Operations
43
Ignition Control Board
43
First Stage of Heating
43
Recycle Operation
43
Retry Operation
43
Second Stage of Heating
43
Gas Heating Operation Errors
43
Flame Sense
43
Lock-Out
43
Temperature Limit
43
Auxiliary Limit Switch (Als)
44
Flash Codes
44
Internal Microprocessor Failure
44
Limit Switch (Ls)
44
Pressure Switch (Ps)
44
Resets
44
Rollout Switch (Ros)
44
Safety Controls
44
Gas Heat Anticipator Setpoints
44
Typical Flame
44
Start-Up (Cooling)
45
Prestart Check List
45
Operating Instructions
45
Post Start Check List
45
Start-Up (Gas Heat)
45
Lighting the Main Burners
45
Shut down
45
Manifold Gas Pressure Adjustment
46
Checking Gas Input
46
Natural Gas
46
Gas Heat Stages
46
Adjustment of Temperature Rise
47
Burners/Orifices Inspection/Servicing
47
Gas Rate Cubic Feet Per Hour
47
Charging the Unit
48
Typical Gas Valve
48
Ton Superheat Charging
48
Ton Superheat Charging
49
Troubleshooting
50
Predator® Flash Codes
50
Unit Control Board Flash Codes
50
Yim-B
50
Ignition Control Flash Codes
51
Unit Control Board
51
Basic Troubleshooting Flowchart
52
Power on Flow Chart
52
Trip Failure Flow Chart
53
Cooling Troubleshooting Guide
54
Gas Heat Troubleshooting Guide
57
4
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York DM090 Specifications
General
Brand
York
Model
DM090
Category
Air Conditioner
Language
English
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