GE Zoneline AZ85E09DAC How to use

GE Appliances
General Electric Company
Louisville, Kentucky 40225
31-9197
GE Appliances
Technical Service Guide
September 2010
Zoneline Vertical Air Conditioners
Case
Zoneline unit
Front
Model Series
AZ85E09DAC
AZ85H09DAC
AZ85E09EAC
AZ85H09EAC
AZ85E12DAC
AZ85H12DAC
AZ85E12EAC
AZ85H12EAC
AZ85E18DAC
AZ85H18DAC
AZ85E18EAC
AZ85H18EAC
AZ85W09DAC
AZ85W12DAC
AZ85W18DAC

– 2 –
GE Appliances
Technical Service Guide
Copyright © 2010
All rights reserved. This service guide may not be reproduced in whole or in part
in any form without written permission from the General Electric Company.
SYSTEM PRESSURES
TechnicianswithR-22experiencewillneedtobecomefamiliarworking
with high and low side pressures that are much higher when using
R-410A. A typical R-22 system operates normally with a high side
pressure of approximately 260 psi at a 120°F condensing temperature
and a low side pressure of approximately 76 psi at 45°F evaporator
saturation temperature.
A typical R-410A system operates normally with a high side pressure
ofapproximately525psiata120°Fcondensingtemperatureandalow
side pressure of approximately 250 psi at 45°F evaporator saturation
temperature.
IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of air conditioning
and heat pump experience. Any attempt to repair an air conditioning
or heat pump system may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
WARNING
Toavoidpersonalinjury,disconnectpowerbefore servicingairconditioning
or heat pump systems. If electrical power is required for diagnosis or test
purposes, disconnect the power immediately after performing the
necessary checks.
RECONNECT ALL GROUNDING DEVICES
If grounding wires, screws, straps, clips, nuts, or washers used to
complete a path to ground are removed for service, they must be
returned to their original position and properly fastened.

– 3 –
Capacitor..............................................................................................................................................................................33
Circuit Boards Locator Views .....................................................................................................................................26
Component Locator Views...........................................................................................................................................23
Components........................................................................................................................................................................30
Compressor ........................................................................................................................................................................44
Controls-Dip Switches....................................................................................................................................................11
Controls-Terminal Connections.................................................................................................................................13
Drive Board..........................................................................................................................................................................31
Electrical Requirements................................................................................................................................................. 6
Features and Operation.................................................................................................................................................11
Indoor Fan Motor..............................................................................................................................................................36
Introduction......................................................................................................................................................................... 4
Main Board...........................................................................................................................................................................30
Nomenclature.................................................................................................................................................................... 5
Operation..............................................................................................................................................................................19
Outdoor Fan Motor..........................................................................................................................................................39
Resistance Heater Assembly......................................................................................................................................34
Reversing Valve ................................................................................................................................................................44
Schematics and Wiring Diagrams............................................................................................................................47
Self-Check and Force Mode.........................................................................................................................................45
Slide-Out Chassis..............................................................................................................................................................28
Technical Data................................................................................................................................................................... 8
Thermistors..........................................................................................................................................................................43
Transformer.........................................................................................................................................................................33
Troubleshooting................................................................................................................................................................45
Warranty..............................................................................................................................................................................49
Table of Contents

– 4 –
Introduction
Case
Zoneline unit
Front
The Zoneline Vertical Air Conditioners are ideal for hotel/motel installations. Programmable for
central desk control, electric heat, freeze sentinel, fan speed, and temperature limiting, these units
allow for efficient control of power usage. The Energy Management System is also available,
providing automatic comfort at peak energy efficiency.
The information on the following pages will help you service the Zoneline Vertical Air Conditioners
effectively and efficiently.

– 5 –
Nomenclature
Zoneline®
D= 230/208 V single phase
E= 265 V single phase
BTU/hr
09 = 9000
12 = 12000
18 = 18000
E= Cooling w/Electric Resistance Heat
H = Cooling w/Heat Pump
and Electric Resistance Heat
W= Cooling only (Hydronic)
Chassis Series
A= Revision
C= Corrosion
The nomenclature tag is located on the front
upper left-hand corner of the unit. This tag
contains important information such as:
• Model/serial number
• Refrigerant charge
• Voltage rating
• Heat and cool amperes
• Heat resistance amperes
•BTU/hr
AZ 85 H 12 D A C W 1
Model Number
M= MEI Compressor
W= Rechi Compressor
Engineering
Revision
Nomenclature Tag Location
Note:
The technical sheet is located inside the front panel
behind the nomenclature tag.
A small additional tag is located on the bottom
front of the chassis indicating model number and
manufacturing date.
The letter designating
the year repeats every
12 years.
Example:
T - 2010
T - 1998
T - 1986
Serial Number
The first two characters of the serial number
identify the month and year of manufacture.
Example: ST123456S = September, 2010
S- SEP 2010 - T
T - OCT 2009 - S
V - NOV 2008 - R
Z - DEC 2007 - M
A - JAN 2006 - L
D - FEB 2005 - H
F - MAR 2004 - G
G - APR 2003 - F
H - MAY 2002 - D
L - JUN 2001 - A
M - JUL 2000 - Z
R - AUG 1999 - V

– 6 –
Wire Size and Breaker Size
Warning: All wiring, including installation of the receptacle, must be in accordance with the National
Electric Code, local codes, ordinances, and regulations.
•Use only the wiring size recommended for single outlet branch circuit.
•Use only the type and size fuse of HACR circuit breaker indicated on the unit’s rating plate. Proper
current protection is the responsibility of the owner.
Recommended branch circuit wire sizes*
Nameplate AWG Wire
maximum circuit size**
breaker size
15A 14
20A 12
30A 10
AWG—American Wire Gauge
*Single circuit breaker frommain box
** Based on copper wire, single insulated conductor at 60° C
Note: Use copper conductors only.
Power Supply Kits
Tandem
15 Amp.
Perpendicular
20 Amp.
Large Tandem
30 Amp.
265/230/208 Volt
Power
Supply Kits Wall Plug
Configuration Circuit Protective Device Heater Wattage
@ 230/208 volts
Electrical Requirements
(Continued next page)
RAK3152 Tandem 15 Amp Time Delay Fuse or Breaker 2.61/2.19 KW
RAK3202 Perpendicular 20 Amp Time Delay Fuse or Breaker 3.42/2.87 KW
RAK3302 Large Tandem 30 Amp Time Delay Fuse or Breaker 4.81/4.07 KW
RAK4157 Direct Connect 15 Amp Time Delay Fuse or Breaker 2.61/2.19 KW
RAK4207 Direct Connect 20 Amp Time Delay Fuse or Breaker 3.42/2.87 KW
RAK4307 Direct Connect 30 Amp Time Delay Fuse or Breaker 4.81/4.07 KW
RAK5157 Direct Connect 15 Amp Time Delay Fuse or Breaker 2.61 KW
RAK5207 Direct Connect 20 Amp Time Delay Fuse or Breaker 3.42 KW
RAK5307 Direct Connect 30 Amp Time Delay Fuse or Breaker 4.81 KW

– 7 –
Direct Connection
208 VAC
230 VAC
265 VAC

– 8 –
Technical Data
DISCONNECT POWER BEFORE SERVICING
IMPORTANT - RECONNECT ALL GROUNDING DEVICES
All parts of this appliance capable of conducting electrical current are
grounded. If grounding wires, screws, straps, clips, nuts or washers used to
complete a path to ground are removed for service, they must be returned
to their original position and properly fastened.
WARNING DISCONNECT UNIT FROM ELECTRICAL POWER SUPPLY
BEFORE MAKING ANY ELECTRICAL CHECKS.
MAXIMUM CURRENT LEAKAGE: 0.75 MILLIAMP
MAXIMUM GROUND PATH RESISTANCE: 0.1 OHM
IMPORTANT SAFETY NOTICE
This information is intended for use by individuals possessing adequate backgrounds
of electrical, electronic and mechanical experience. Any attempt to repair a major
appliance may result in personal injury and property damage. The manufacturer
or seller cannot be responsible for the interpretation of this information, nor can it
assume any liability in connection with its use.
COOLING R/C HEATING
MODEL RATED
VOLTAGE VOLTAGE LIMITS
EVAP
AIR
TEMP
IN °F
EVAP AIR OUT °F AIR
TEMP
COND.
IN °F
COOLING
CURRENT EVAP AIR
TEMP
IN °F
EVAP AIR OUT °F AIR
TEMP
COND.
IN °F
CURRENT
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
AZ85H09D
208V
187-253
70
80
90
74
83
90
82
89
98
80
95
110
3.5
3.9
3.9
3.9
4.4
4.6
70
75
80
112
117
121
121
126
131
47
60
75
3.3
3.4
3.4
3.9
4.0
4.1
230V
70
80
90
74
83
90
82
89
98
80
95
110
3.2
3.6
3.6
3.6
4.1
4.2
70
75
80
112
117
121
121
126
131
47
60
75
3.1
3.1
3.2
3.6
3.7
3.8
AZ85H09E 265 238-292
70
80
90
74
83
90
82
89
98
80
95
110
2.8
3.1
3.1
3.1
3.5
3.7
70
75
80
112
117
121
121
126
131
47
60
75
2.7
2.7
2.7
3.1
3.2
3.3
AZ85H12D
208V
187-253
70
80
90
74
82
89
82
90
96
80
95
110
4.4
4.8
5.4
5.1
5.7
6.5
70
75
80
117
120
125
126
131
136
47
60
75
4.1
4.3
4.5
4.8
5.1
5.4
230V
70
80
90
74
82
89
82
90
96
80
95
110
4.1
4.4
5.0
4.7
5.3
6.0
70
75
80
117
120
125
126
131
136
47
60
75
3.8
3.9
4.2
4.5
4.7
5.0
AZ85H12E 265 187-
253 238-292
70
80
90
74
82
89
82
90
96
80
95
110
3.5
3.9
4.3
4.1
4.6
5.2
70
75
80
117
120
125
126
131
136
47
60
75
3.3
3.4
3.6
3.9
4.1
4.3
POWER SUPPLY AND TEMPERATURE CHECK
RUNNING CURRENT
With unit in case, operate for ten minutes on Hi-Cool. See Power Supply
and Temperature Check table for normal limits.
CONDENSER
1. Check for blockage with dirt, or other material.
2. Check for corrosion.
FILTER
Check for cleanliness.
TEMPERATURE DIFFERENTIAL - COOLING
Unit must operate for one hour with thermostat at coldestsetting
prior to measuring air temperatures. See Power Supply and
Temperature Check table for normal limits.
SEALED SYSTEM
MODEL COMPRESSOR REFRIG.
R410A CAPILLARY OD x ID x LENGHT (PC)
AZ85H09D
AZ85H09E Rechi 34 oz. .106" x .055" x 15.75" (3) .106" x .055" x 31.50" (1)
AZ85H12D
AZ85H12E Rechi 39 oz.
.106" x .055" x 15.75" (4)
.106" x .059" x 9.84"(1)
.106" x .059" x 25.59" (1)
RUN CAPACITOR CHECK
1. Replace unit run capacitor with
a known good test capacitor
which may be 10 MFD higher
than speci¿ed and attempt to
start compressor.
2. If compressor starts, install a
new run capacitor which has
a rating speci¿ed for the unit.
TL1 (C) (Temp. Limit 1 - Cool)
TL2 (C) (Temp. Limit 2 - Cool)
TL3 (C) (Temp. Limit 3 - Cool)
TL1 (H) (Temp. Limit 1 - Heat)
TL2 (H) (Temp. Limit 2 - Heat)
TL3 (H) (Temp. Limit 3 - Heat)
ALL I'R (All Electric Heat
(Heat-pump models only)
FREEZ S (Freeze Sentinel)
CONST FAN (Constant ON Fan)
OCCUPIED (Occupancy Sensor)
DUCT (Blower Fan)
No Function
(Reserved for future use)
WARNING: Risk of electric shock. Can cause injury
or death: Read all instructions and safety information
before servicing this product.
WIRING - COMPRESSOR DIRECT CHECK
CAUTION: Risk of injury. Keep
head clear of terminal area when
cover is removed.
Check windings ¿rst. If open or
grounded, DO NOT apply power to
compressor terminals.
Heat Pump Model AZ85H12DACW1
(Continued next page)

– 9 –
Electric Heat Model AZ85E12DACW1
DISCONNECT POWER BEFORE SERVICING
IMPORTANT - RECONNECT ALL GROUNDING DEVICES
All parts of this appliance capable of conducting electrical current are
grounded. If grounding wires, screws, straps, clips, nuts or washers used to
complete a path to ground are removed for service, they must be returned
to their original position and properly fastened.
WARNING DISCONNECT UNIT FROM ELECTRICAL POWER SUPPLY
BEFORE MAKING ANY ELECTRICAL CHECKS.
MAXIMUM CURRENT LEAKAGE: 0.75 MILLIAMP
MAXIMUM GROUND PATH RESISTANCE: 0.1 OHM
IMPORTANT SAFETY NOTICE
This information is intended for use by individuals possessing adequate backgrounds
of electrical, electronic and mechanical experience. Any attempt to repair a major
appliance may result in personal injury and property damage. The manufacturer
or seller cannot be responsible for the interpretation of this information, nor can it
assume any liability in connection with its use.
RUN CAPACITOR CHECK
1. Replace unit run capacitor with
a known good test capacitor
which may be 10 MFD higher
than speci¿ed and attempt to
start compressor.
2. If compressor starts, install a
new run capacitor which has
a rating speci¿ed for the unit.
MODEL RATED
VOLTAGE VOLTAGE LIMITS EVAPORATOR AIR TEMP IN °F EVAP AIR OUT °F AIR TEMP CONDENSER IN °F COOLING CURRENT
MIN. MAX. MIN. MAX.
AZ85E09DACW1
208V
187-253
70
80
90
74
83
90
82
89
98
80
95
110
3.5
3.9
3.9
3.9
4.4
4.6
230V
70
80
90
74
83
90
82
89
98
80
95
110
3.2
3.6
3.6
3.6
4.1
4.2
AZ85E09EACW1 265 238-292
70
80
90
74
83
90
82
89
98
80
95
110
2.8
3.1
3.1
3.1
3.5
3.7
AZ85E12DACW1
208V
187-253
70
80
90
74
82
89
82
90
96
80
95
110
4.4
4.8
5.4
5.1
5.7
6.5
230V
70
80
90
74
82
89
82
90
96
80
95
110
4.1
4.4
5.0
4.7
5.3
6.0
AZ85E12EACW1 265 238-292
70
80
90
74
82
89
82
90
96
80
95
110
3.5
3.9
4.3
4.1
4.6
5.2
POWER SUPPLY AND TEMPERATURE CHECK
RUNNING CURRENT
With unit in case, operate for ten minutes on Hi-Cool. See Power Supply
and Temperature Check table for normal limits.
CONDENSER
1. Check for blockage with dirt, or other material.
2. Check for corrosion.
FILTER
Check for cleanliness.
TEMPERATURE DIFFERENTIAL - COOLING
Unit must operate for one hour with thermostat at coldestsetting
prior to measuring air temperatures. See Power Supply and
Temperature Check table for normal limits.
SEALED SYSTEM
MODEL COMPRESSOR REFRIG.
R410A CAPILLARY OD x ID x LENGHT (PC)
AZ85E09D
AZ85E09E Rechi 27.5 oz. .106" x .051" x 23.62" (1)
AZ85E12D
AZ85E12E Rechi 27.5 oz. .106" x .059" x 25.59" (1) .106" x .055" x 15.75" (2)
TL1 (C) (Temp. Limit 1 - Cool)
TL2 (C) (Temp. Limit 2 - Cool)
TL3 (C) (Temp. Limit 3 - Cool)
TL1 (H) (Temp. Limit 1 - Heat)
TL2 (H) (Temp. Limit 2 - Heat)
TL3 (H) (Temp. Limit 3 - Heat)
ALL I'R (All Electric Heat
(Heat-pump models only)
FREEZ S (Freeze Sentinel)
CONST FAN (Constant ON Fan)
OCCUPIED (Occupancy Sensor)
DUCT (Blower Fan)
No Function
(Reserved for future use)
WARNING: Risk of electric shock. Can cause injury
or death: Read all instructions and safety information
before servicing this product.
WIRING - COMPRESSOR DIRECT CHECK
CAUTION: Risk of injury. Keep
head clear of terminal area when
cover is removed.
Check windings ¿rst. If open or
grounded, DO NOT apply power to
compressor terminals.
(Continued next page)

– 10 –
Cooling Model AZ85W12DACW
DISCONNECT POWER BEFORE SERVICING
IMPORTANT - RECONNECT ALL GROUNDING DEVICES
All parts of this appliance capable of conducting electrical current are
grounded. If grounding wires, screws, straps, clips, nuts or washers used to
complete a path to ground are removed for service, they must be returned
to their original position and properly fastened.
WARNING DISCONNECTUNIT FROM ELECTRICAL POWER SUPPLY
BEFORE MAKING ANY ELECTRICAL CHECKS.
MAXIMUM CURRENT LEAKAGE: 0.75 MILLIAMP
MAXIMUM GROUND PATH RESISTANCE: 0.1 OHM
IMPORTANT SAFETY NOTICE
Thisinformationisintendedforusebyindividualspossessingadequatebackgrounds
of electrical, electronic and mechanical experience. Any attempt to repair a major
appliance may result in personal injury and property damage. The manufacturer
or seller cannot be responsible for the interpretation of this information, nor can it
assume any liability in connection with its use.
RUN CAPACITOR CHECK
1.Replaceunitruncapacitorwith
a known good test capacitor
which may be 10 MFD higher
WKDQVSHFL¿HGDQGDWWHPSWWR
start compressor.
2. If compressor starts, install a
new run capacitor which has
DUDWLQJVSHFL¿HGIRUWKHXQLW
MODEL RATED
VOLTAGE VOLTAGE LIMITS EVAPORATOR AIR TEMP IN °F EVAP AIR OUT °F AIR TEMP CONDENSER IN °F COOLING CURRENT
MIN. MAX. MIN. MAX.
AZ85W09DACW1
208V
187-253
70
80
90
74
83
90
82
89
98
80
95
110
3.5
3.9
3.9
3.9
4.4
4.6
230V 70 80
90
74
83
90
82
89
98
80
95
110
3.2
3.6
3.6
3.6
4.1
4.2
AZ85W12DACW1
208V
187-253
70
80
90
74
82
89
82
90
96
80
95
110
4.4
4.8
5.4
5.1
5.7
6.5
230V 70 80
90
74
82
89
82
90
96
80
95
110
4.1
4.4
5.0
4.7
5.3
6.0
POWER SUPPLY AND TEMPERATURE CHECK
RUNNING CURRENT
With unit in case, operate for ten minutes on Hi-Cool. See Power
Supply and Temperature Check table for normal limits.
CONDENSER
1. Check for blockage with dirt, or other material.
2. Check for corrosion.
FILTER
Check for cleanliness.
TEMPERATURE DIFFERENTIAL - COOLING
Unit must operate for one hour with thermostat at coldestsetting
prior to measuring air temperatures. See Power Supply and
Temperature Check table for normal limits.
SEALED SYSTEM
MODEL COMPRESSOR REFRIG.
R410A CAPILLARY OD x ID x LENGHT (PC)
AZ85W09D Rechi 27.5 oz. .106" x .051" x 23.62" (1)
AZ85W12D Rechi 27.5 oz. .106" x .059" x 25.59" (1)
.106" x .055" x 15.75" (2)
Temperature limiting during COOL mode
(all temperatures shown in °F)
UP Down Min. Max.
NONE 1,2,3 60° 85°
1 2,3 64° 85°
1,2 3 66° 85°
2 1,3 68° 85°
2,3 1 70° 85°
1,2,3 NONE 72° 85°
1,3 2 74° 85°
3 1,2 76° 85°
TL1 (C) (Temp. Limit 1 - Cool)
TL2 (C) (Temp. Limit 2 - Cool)
TL3 (C) (Temp. Limit 3 - Cool)
TL1 (H) (Temp. Limit 1 - Heat)
TL2 (H) (Temp. Limit 2 - Heat)
TL3 (H) (Temp. Limit 3 - Heat)
ALL I'R (All Electric Heat
(Heat-pump models only)
FREEZ S (Freeze Sentinel)
CONST FAN (Constant ON Fan)
OCCUPIED (Occupancy Sensor)
DUCT (Blower Fan)
No Function
(Reserved for future use)
WARNING: Risk of electric shock. Can cause injury
or death: Read all instructions and safety information
before servicing this product.
WIRING - COMPRESSOR DIRECT CHECK
CAUTION: Risk of injury. Keep
head clear of terminal area when
cover is removed.
 &KHFNZLQGLQJV¿UVW,IRSHQRU
grounded, DO NOT apply power to
compressor terminals.

– 11 –
Features and Operation
Controls-Dip Switches
Dip Switches
The dip switches are located behind the front case
panel, and are accessible through an opening on the
front of the unit. The left row of dip switches controls
Temperature Limiting. The right row of dip switches
controls the heat pump lockout, Freeze Sentinel,
constant fan, Energy Management System, and indoor
fan speed.
Note:
• The dip switches are set in the down posi-
tion from the factory.
• The owner is responsible for setting the
appropriate dip switches and connecting
terminals.
ALL I2











All I2R (Heat Pump Lockout)
When this switch is up, heat pump operation
is locked out. Only electric resistance heat is
available when switch is up.
Note: Not all models are equipped with heat
pumps. Refer to the Nomenclature chapter to
determine if your model is equipped with a
heat pump.
FREEZ S (Freeze Sentinel)
Refer to the Freeze Sentinel section of
this chapter for more information.
CONST FAN
When this switch is up, the fan runs
continuously at high speed even if unit
is off.
NOT USED
DUCT
This switch, in conjunction with the
thermostat connection, controls indoor
fan speed.
Refer to the Fan Speed section of this
chapter for more information
OCCUPIED
Refer to the Energy Management
System section of this chapter for more
information.


(Continued next page)

– 12 –
ALL I2
All Electric Heat (Heat pump models only)
When this switch is enabled (UP), heat pump
operation is locked out, causing the unit to provide
only electric resistance heat.







Freeze Sentinel (Requires room air sensor kit-
RAVRMS)
When this switch is enabled (UP), it turns OFF the
freeze sentinel protection feature. With the switch
disabled (DOWN), the freeze sentinel is activated,
which automatically provides heat without user
interface. This helps prevent plumbing damage by
turning the heater and fans ON at 41°F and OFF at
46°F.
Constant ON Fan
When this switch is enabled (UP), it allows the fan to
run continuously.
Occupancy Sensor (Field Supplied)
When this switch is enabled (UP), it allows the unit to
utilize an infrared motion sensor and a door switch
for occupancy detection. This feature combined
with field devices automatically cycles the unit
between normal operation and a preset energy
management operation.
Duct
The duct select function allows the indoor fan to
be operated at two variable fan speeds. When this
switch is enabled (UP), the unit automatically selects
high or middle fan speed (for longer ductwork
applications). When set in the disabled (down)
position, the unit is automatically operated in either
the middle or low fan speed (for shorter ductwork
applications).

– 13 –
Main Board Terminal Strip
Caution: Improper wiring may damage the Zoneline
electronics. Damage or erratic operation may result.
No common busing is permitted. A separate wire
pair must be run from each separate controlling
switch to each individual Zoneline.
The terminal connections are located behind the
front case panel.
Insert the building hookup wires into the bottom of
the terminal and tighten screw securely to make the
desired connections.
Route any wires from the terminal connections
through the case loop.











24V
AC
FAN LO
FAN HI
REV VAL
COMP
AUX HEA
T
COMMON
Controls-Terminal Connections
Remote Thermostat Control
The unit is controlled by an externally mounted, remote thermostat.
The Zoneline thermostat connections provide 24 VAC only. If using a digital/electronic wall thermostat, it
must be set to the 24-VAC setting. Refer to the thermostat installation instructions for details.
Note: Some thermostats can be programmed to energize the reversing valve in heating mode or cool mode.
If the thermostat is not programmed correctly, the unit will heat when the thermostat is set to cool and cool
when the thermostat is set to heat. Refer to the instructions provided with the thermostat for thermostat
programming procedures. Also refer to the Reversing Valve section of the Components chapter for more
information.
Hydronic Heating (Requires Hydronic Heating
Kit- RAVHW1, RAVHW2, or RAVHW3)

24VAC
FAN LO
FAN HI
REV
VA L
COMP
AUX HEAT
COMMON
Required connections for hydronic heating kit.
Note: R, W, and C terminal connections will also be
connected to the remote thermostat if applicable.








– 14 –







24VAC
FAN LO
FAN HI
REV VAL
COMP
AUX HEAT
COMMON
MAIN
BOARD
13
14
15
11
10
9
12
24 V
FAN (L)
FAN (H)
COOL
HEAT
COM
CLASS 2 REMOTE THERMOSTAT
REV
GEA01248
When a CDC switch is connected to the main board
terminal strip, the unit can be turned on and off
from a remote location. Up to 2000 feet of wire may
be used to connect a remote CDC switch to the unit.
A separate wire pair must be run from each CDC
switch to each Zoneline. Multiple units cannot be run
from the same CDC switch.
The remote CDC switch will be closed when the unit
is off.
REMOTE CDC SWITCH CLOSED = UNIT OFF
REMOTE CDC SWITCH OPEN = UNIT ON
Note: The Freeze Sentinel is still operational when
the remote CDC switch has turned the unit off. The
room air sensor must be installed and Freeze Senti-
nel dip switch must be in the down position for the
Freeze Sentinel to operate.
MAIN
BOARD
CDC SWITCH 7
8
GEA01218

24VAC
FAN LO
FAN HI
REV VAL
COMP
AUX HEAT
COMMON
Central Desk Control (CDC)
(Continued next page)

– 15 –
Temperature Limiting
Temperature limiting limits the lowest temperature that can be set for cooling and the highest temperature
that can be set for heating. The dip switches are used to control temperature limiting.
Temperature limiting is dependent on the Room Air Sensor (kit). If the Room Air Sensor (kit) is not installed,
temperature limiting will not operate. Temperature limiting is not dependent on the Occupied dip switch, Mo-
tion Sensor (kit), or Door Sensor (kit).











24V
AC
FAN LO
FAN HI
REV VAL
COMP
AUX HEA
T
COMMON
Freeze Sentinel
Temperature Limiting During Cool Mode
UP DOWN Minimum Maximum
NONE 1,2,3 60°F 85°F
1 2,3 64°F 85°F
1,2 3 66°F 85°F
2 1,3 68°F 85°F
2,3 1 70°F 85°F
1,2,3 NONE 72°F 85°F
1,3 2 74°F 85°F
3 1,2 76°F 85°F
Temperature Limiting During HEAT Mode*
UP DOWN Minimum Maximum
NONE 4,5,6 60°F 85°F
4 5,6 60°F 80°F
4,5 6 60°F 78°F
5 4,6 60°F 76°F
5,6 4 60°F 74°F
4,5,6 NONE 60°F 72°F
4,6 5 60°F 70°F
6 4,5 60°F 65°F
* Not applicable to Cool-only models.
(Continued next page)

– 16 –
The Freeze Sentinel is enabled by a dip switch and is
dependant on the Room Air Sensor (kit). If the Room
Air Sensor (kit) is not installed, the Freeze Sentinel
will not operate. The FREEZE S dip switch must be
down for Freeze Sentinel operation.
FREEZE S SWITCH DOWN = ON
FREEZE S SWITCH UP = OFF
The Freeze Sentinel turns on the resistance heater(s)
and indoor fan when the Room Air Sensor (kit) sees
41°F. When the temperature of the room has risen
to 46°F, the unit will turn off.
The Freeze Sentinel will remain enabled when the
unit has been turned off by the remote Central Desk
Control.
Fan Speed (Indoor Fan)
The Indoor fan operates at one speed during unit
operation. The duct dip switch, in conjunction with
the thermostat connection, controls at what speed
the indoor fan operates.
When the green thermostat wire is connected to the
high speed fan (FAN HI) terminal:
DUCT SWITCH UP = HIGH FAN SPEED
DUCT SWITCH DOWN = MEDIUM FAN SPEED
When the green thermostat wire is connected to the
low speed fan (FAN LO) terminal:
DUCT SWITCH UP = MEDIUM FAN SPEED
DUCT SWITCH DOWN = LOW FAN SPEED
All I2R
(Heat Pump Lockout)
FREEZ S
(Freeze Sentinel) CONSTANT FAN
DUCT
OCCUPIED
24VAC
FAN LO
FAN HI
REV VA L
COMP
AUX HEAT
COMMON
(Continued next page)

– 17 –
Energy Management System
The following conditions must exist for the Energy
Management System to operate:
• OCCUPIED dip switch is up.
• Room Air Sensor (kit) is installed.
• Door Sensor (kit) is installed.
• Motion Sensor (kit) is installed.
The Energy Management System uses input from
the Door Sensor (kit) and Motion Sensor (kit) to
establish if the room is occupied or unoccupied.
When the Energy Management System has
established that the room is unoccupied, it
uses input from the Room Air Sensor (kit) and
allows the temperature of the room to lower to
68°F (heat mode) or raise to 78°F (cool mode).
When the room becomes occupied, the Energy
Management System will return to thermostat-
controlled operation and will return the room to the
temperature set on the thermostat.
MAIN
BOARD
2
3
4
1
ROOM AIR SENSOR
MOTION SENSOR
CDC SWITCH
DOOR SWITCH 5
6
7
8
9
GEA01211

24VAC
FAN LO
FAN HI
REV VAL
COMP
AUX HEAT
COMMON
The following conditions must exist
for the energy management system
to operate:
• Occupied dip switch is up.
• Room Air Sensor (kit) installed.
• Door Sensor (kit) installed.
• Motion Sensor (kit) installed.
When the door opens, the
unit will check the motion sensor.
Unit switches to Room Air
Sensor control. Unit will lower
temperature of room to 68 ˚F
(heat mode) or raise the
temperature of room to 78 ˚F
(cool mode).
Unit continues to
be controlled by
thermostat.
No motion
detected by
motion sensor.
Motion detected by
motion sensor.
Schematic shown with unit on, door closed, and
motion sensed.
DOOR OPEN = SENSOR (SWITCH) CLOSED
DOOR CLOSED = SENSOR (SWITCH) OPEN
MAIN BOARD OUTPUT TO DOOR SENSOR = 24 VAC
Door Sensor (kit)
The Door Sensor has a two-wire circuit that is
connected to the main board terminal strip. When
the door opens, the door sensor (switch) closes.
When the Energy Management System sees the
door sensor circuit close (door opened), the Energy
Management System will then check the motion
sensor circuit.
Note: The Energy Management System is
dependent on the Room Air Sensor, Motion Sensor,
and Door Sensor. If the Room Air Sensor, Motion
Sensor, and Door Sensor are not all installed, the
Energy Management System will not operate.
(Continued next page)

– 18 –
Motion Sensor (kit)
The motion sensor has a 2-wire circuit that is
connected to the main board terminal strip. The
motion sensor is an electronic sensor that, when
motion is sensed, closes a switch (internal to the
sensor), completing the motion sensor circuit.
After the Energy Management System has seen
the door sensor circuit closed (door opened), it
will check the motion sensor circuit. If the Energy
Management System sees the motion sensor
circuit closed (no motion detected by the sensor),
it will then check the temperature being reported
by the room air sensor. If the Energy Management
System sees the motion sensor circuit open (motion
detected by sensor), the unit will continue to be
thermostat-controlled.
Note: The Energy Management System is
dependent on the Room Air Sensor, Motion Sensor,
and Door Sensor. If the Room Air Sensor, Motion
Sensor, and Door Sensor are not all installed, the
Energy Management System will not operate.


24VAC
FAN LO
FAN HI
REV VAL
COMP
AUX HEAT
COMMON

24VAC
FAN LO
FAN HI
REV VAL
COMP
AUX HEAT
COMMON
NO MOTION = SENSOR (SWITCH) CLOSED
MOTION = SENSOR (SWITCH) OPEN
MAIN BOARD OUTPUT TO
MOTION SENSOR = 24 VAC
MAIN BOARD OUTPUT TO
ROOM AIR SENSOR = 5 VDC
rosneSriAmooR seulaVecnatsiseR
erutarepmeT ecnatsiseR
F°23k06 Ω
F°86k02 Ω
F°77k01 Ω
F°68k9Ω
F°59k8Ω
Room Air Sensor (kit)
The room air sensor is a thermistor with a negative
coefficient (as temperature rises, resistance goes
down). The sensor has a 2-wire circuit that is
connected to the main board terminal strip.
The room air sensor is used for Temperature
Limiting and for the Energy Management System.
When the Energy Management System sees the
door sensor circuit close and then the motion
sensor circuit close (room unoccupied), the Energy
Management System will ignore the thermostat
and check the temperature reported by the room
air sensor. Based on the input from the room air
sensor, the Energy Management System will allow
the temperature of the room to lower to 68°F (heat
mode) or raise to 78°F (cool mode).
Note: The Energy Management System is
dependent on the Room Air Sensor, Motion Sensor,
and Door Sensor. If the Room Air Sensor, Motion
Sensor, and Door Sensor are not installed, the
Energy Management System will not operate.

– 19 –
Ventilation Control
The ventilation control lever is located on the left
side of the Zoneline unit, behind the front case
panel.
When the lever is in the CLOSE position, only air
inside the room is circulated and filtered.
When the lever is in the OPEN position, some
outdoor air will be drawn into the room. This will
reduce the heating or cooling efficiency.






Operation


ON/OFF Switch
WARNING: ON/OFF switch does not disconnect
power from all circuits.
The ON/OFF switch is located on the electronics
cover behind the front case panel. The ON/OFF
switch disables all relays, but does not disconnect
power from all circuits. No functions are available
when the switch is off.
About Heat Pumps (on some models)
Heat pumps can reduce operating costs by
exchanging heat from the outside air-even when the
outside temperature is below freezing-and releasing
that heat indoors.
To get the best economic benefit from the heat
pump, don’t change the room thermostat setting
very often. Raising the heat setting 2-3 degrees
will cause the Zoneline to use its electric heating
elements in order to reach the new temperature
setting quickly.
There is a 3-minute minimum compressor run time
at any setting to prevent short cycling.
The indoor fan motor starts before the compressor
starts, and stops after the compressor cycles off.
The electric heating elements use much more
electricity than heat pumps and cost more to
operate.
Do Not Operate the Air Conditioner (cool
mode) in Freezing Outdoor Conditions
Air conditioners are not designed for use when
freezing outdoor conditions exist. They must not be
used in freezing outdoor conditions.
(Continued next page)

– 20 –
Cool Mode Operation
Note:
• Minimum compressor/fans off time is 3 minutes +/- 10 seconds.
• Reversing valve is energized at all times in cool mode. Reversing valve is not de-energized when
thermostat is satisfied.
• Indoor and outdoor fans always operate at the same time in cool mode.
Currently Cooling
Indoor fan, outdoor
fan, compressor,
reversing valve
energized.
Thermostat
satisfied.
Indoor fan, outdoor
fan, compressor
off.
Compressor
energized.
Currently Off
Set thermostat to
cool. Adjust
thermostat to setting
below room
temperature.
Indoor fan, outdoor
fan, reversing
valve energized.
Thermostat not
satisfied.
Indoor fan, outdoor
fan energized.
3 SECOND
DELAY
3
SECOND
DELAY
Automatic Defrosting of Indoor and Outdoor Coils
During continued compressor operation, there is potential for ice to form on the indoor coil when in cool
mode and for ice to form on the outdoor coil when in heat mode. The Zoneline is equipped with Automatic
Defrost to eliminate this potential problem.
Indoor coil defrost will occur when the indoor coil thermistor reads a temperature of 34°F or less for a
duration of 5 minutes. The main board will automatically shut the compressor off, allowing the indoor
coil temperature to rise. The fans will continue to operate throughout the defrost cycle for continued air
circulation. When the indoor coil thermistor detects a temperature of 50°F or above, the compressor will
resume normal operation. A 3-minute minimum compressor off time will be in effect.
Outdoor coil defrost will occur for one of the following reasons:
• The outdoor temperature thermistor reads a temperature of 14 °F or less for a duration of 2 hours and 59
minutes.
• The accumulated run time of the compressor is greater that 3 hours with an outdoor temperature of
32°F or less.
The outdoor coil is defrosted by reverse cycle defrosting (reversing the direction of the refrigerant flowing
through the sealed system). This will cause hot refrigerant flowing through the outdoor coil to quickly
and efficiently melt any ice that has formed. Outdoor coil defrosting will terminate when the outdoor coil
thermistor reads a temperature of 68°F, or when a period of 9 minutes has elapsed, whichever comes first.
When outdoor defrosting has been completed, the resistance heater(s) and fans will run for a minimum of 90
seconds or until the room has reached the thermostat set point.
(Continued next page)