Argo AZ Series Technical Document

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARGO AZ SERIES ZONE vALvE CONTROLS
Az-3, Az-5
P/N 240005130, Rev. A [6/08]
An ISO 9001-2000 Certied Company
AZ-3
AZ-5
ARGO (Technical Support)
2201 Dwyer Avenue
Utica, NY 13501
(Corporate Sales)
85 Middle Road
Dunkirk, NY 14048
www.argocontrols.com

2
INSTALLATION MANUAL
AND OPERATING INSTRUCTIONS
TABLE OF CONTENTS
Safety Symbols and Warnings .......................................................3
Introduction.....................................................................................4
AZ Circuit Board.............................................................................4
Mounting Instructions .....................................................................5
Electrical Specications & Wiring...................................................6
Sequence of Operation...................................................................7
AZ-5 Wiring Schematics.................................................................8
AZ Control w/DPM-2 Outdoor Reset Control..................................9
AZ Control w/Power Robbing Thermostat....................................10
Replacement Parts.......................................................................11
Technical Support.........................................................................11
RETAIN THIS MANUAL FOR FUTURE REFERENCE

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!!
!!
!!
!!
SAFETY SYMBOLS AND WARNINGS
The following dened symbols are used throughout this manual to
notify the reader of potential hazards of varying risk levels.
DANGER
Indicates an imminently hazardous situation which, if not
avoided, WILL result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, COULD result in death or serious injury.
CAUTION
Indicates a potential hazardous situation which, if not avoid-
ed, MAY result in minor or moderate injury. It may also be
used to alert against unsafe practices.
IMPORTANT: Read the following instructions COMPLETELY
before installing!!
WARNING
All installations should be done only by a qualied expert
and in accordance with the appropriate Argo manual. In-
stalling an electric appliance with improper methods or
materials may result in serious injury or death due to re.

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INTRODUCTION
This manual is intended to familiarize the installer and user of the
Argo AZ Series Zone Valve Controls with their installation and op-
eration to assure normal trouble-free operation.
Argo Controls are designed and manufactured with quality compo-
nents for maximum life and durability and require minimal service.
To insure a satisfactory installation, it is imperative that the instruc-
tions be followed carefully before operating the relays. Failure to do
so may result in breach of warranty.
AZ CIRCUIT BOARD
The diagram below represents an Argo AZ-5 Zone Valve Control.
The AZ-3 has similar connections.
ZONE 2
24 VAC
X2
END SW 2END SW 1
X1 X1 X2
COM
ZONE 1
1 2 3 4 1 2
T
ON
X-X
T T
Zone Valve Controller
AZ-3
ZONE 3
43 1 2 43
T T T
AZ-5
ZONE 4
1 2 3 4
ZONE 5
31 2 4
T T T T
Red Indicator LED
(indicates zone valve
is fully open)
Class 2
Zone Valve
Terminals
Isolated End Switches
X-X
Class 2
Thermostat
Terminals
Green Indicator LED
(indicates zone is
calling for heat)
Class 2
Transformer
Terminals (24 Vac)
X-X Indicator LED
(indicates both
X-X end switches
are closed)

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MOUNTING INSTRUCTIONS
Mount the Argo AZ control vertically on a solid wall or partition. For
your convenience it is recommended that the control be mounted as
close as possible to the device to be controlled. The switching relay
should never be mounted more than 75 feet away. Select a location
that is easily accessible for installation and service.
NOTE: To reduce the possible transformer hum and relay noise
that is sometimes amplied by mounting surfaces such as
sheet metal, plasterboard, and similar materials, place rubber
or felt washers between the case and the mounting surface.
1. Position the control and mark the mounting holes.
2. Start screws (not provided) for the keyhole type mounting
holes in the upper corner(s). Tighten the screws down to
about ⅛” (3mm) from the surface.
3. Hang the control on the screw(s), position the case, and
start the bottom screws.
4. Tighten all screws.

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ELECTRICAL SPECIFICATIONS & WIRING
ELECTRICAL SPECIFICATIONS
A R G O M o d e l N u m b e r Zones Transformer Voltage
AZ-3 3 120V, 60 HZ, 40VA
AZ-5 5 120V, 60 HZ, 75VA
!!
WARNING
ELECTRICAL SHOCK HAZARD! Disconnect power be-
fore installing or servicing. Can cause severe personal
injury, death, or substantial property damage if ignored.
GENERAL WIRING NOTICE
All primary wiring must be 14 AWG minimum. Torque terminal
screws 6 to 7 inch pounds.
All wiring must be installed in accordance with:
U.S.A. – National Electrical Code and any other national, state or
local code requirements. Wiring must be N.E.C. Class 1.
Canada – C.S.A. C22.1 Canadian Electrical Code Part 1 and any
other national, provincial or local code requirements. Wiring must
be C.S.A. C22.1 C.E.C, Part 1.

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SEQUENCE OF OPERATION
• The control will scan all TT terminals looking for a call for
heat from any thermostat.
• When a call for heat is detected the green TT LED for that
zone will illuminate.
• The corresponding zone terminals 1 & 2 will be energized
with 24 volts.
• The control will then wait for the zone valve end switch to
close, a red LED will illuminate, indicating zone valve is fully
open.
• Once the zone valve opens the X-X contact will close.

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AZ-5 WIRING SCHEMATIC

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AZ CONTROL W/DPM-2 OUTDOOR RESET CONTROL
The DPM-2 Outdoor Reset Control is designed to raise or lower the
temperature of the boiler supply water based upon a proportionate
drop or rise in temperature at the outside sensor. This control plugs
into Argo control equipment with a data port or as a stand alone
device that can be easily wired into almost any system. See the
separate DPM-2 Installation Manual for more information.
DPM-2
SENSOR
OUTDOOR
SENSOR
WATER
TYPICAL WIRING APPLICATION USING DPM-2
OUTDOOR RESET WITH ARGO AZ-3 ZONE VALVE CONTROL
{
To T-T on
Boiler Aquastat
24V
120VAC VA
40
FACTORY CALIBRATION
TRIMPOTS FOR
DO NOT USE
210
MAX TEMP
OR X-X
FROM
T STAT
POWER ON
O
DATA PORT
FROM ARM
1.5
RESET RATIO
W
C
1
0.5 150
0.7
0.6
0.8
1.0
180
24VAC
COMMON TO T-T
BOILER
DIFF
5
REG 2
REG 1
15
10
ON
PRIORITY
OUTDOOR RESET CONTROL
DPM-2
OUTDOOR
SENSOR
WATER
SENSOR
PRIORITY
INPUT
CIRC
L1 (HOT)
N
ZONE 2
24 VAC
X2
END SW 2END SW 1
X1 X1 X2
COM
ZONE 1
1 2 3 4 1 2
T
ON
X-X T T
Zone Valve Controller
AZ-3
ZONE 3
43 1 2 43
T T T
RESET ON
TYPICAL WIRING APPLICATION USING DPM-2
OUTDOOR RESET WITH ARGO AZ-3
ZONE VALVE CONTROL

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AZ CONTROL W/POWER ROBBING THERMOSTAT
Your new Argo AZ control should work well with all standard and
most programmable setback thermostats. In the event the program-
mable thermostat you are using causes the control board relays to
chatter, you will require an external 24V power supply (transformer)
and anArgo IR882 Isolation Relay. Please refer to the literature with
the IR882 for proper wiring and transformer sizing.
NOTE: 6VA per thermostat
should be acceptable for most
applications. Consult your ther-
mostat manufacturer’s literature
for their actual VA requirements.
115/24 VAC
THERMOSTAT
TRANSFORMER
WIRE
THERMOSTAT
THERMOSTAT
TWOTWO
WIRE
THERMOSTAT
TWO
WIRE
THREE
WIRE
THERMOSTAT
THREE
WIRE
THERMOSTAT
6VA PER
IR882 IR882
+
+
ISOLATION RELAY
MODEL IR882
X X
1 1
C
T T
W R
1.2 K
100
Z0NE 1
X2X2
100
ZONE 2
1.2 K
W
T
R
T
X3X3
100
ZONE 3
W
1.2 K
T
R
T
OUTPUT
24VAC24VAC
INPUT
24
C
24 24
C
+
+
+
+
+
+
ISOLATION RELAY
MODEL IR882
X X
1 1
C
T T
W R
1.2 K
100
Z0NE 1
X2X2
100
ZONE 2
1.2 K
W
T
R
T
X3X3
100
ZONE 3
W
1.2 K
T
R
T
OUTPUT
24VAC24VAC
INPUT
24
C
24 24
C
+
+
+
+
ZONE 2
24 VAC
X2
END SW 2END SW 1
X1 X1 X2
COM
ZONE 1
1 2 3 4 1 2
T
ON
X-X T T
Zone Valve Controller
ZONE 3
43 1 2 43
T T T
AZ-5
ZONE 4
1 2 3 4
ZONE 5
31 2 4
T T T T
TWO WIRE STAT OPTION THREE WIRE STAT OPTION
AZ-5
RELAY
RELAY RELAY RELAY RELAY RELAY RELAY
Typical Application Using (2) IR882 Relays To Isolate Power
Stealing Thermostats From An Argo AZ-5 Zone Control Panel
Field
Supplied

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Part Description Part
Number
Circulator plug-in relay (24 VAC coil) R35C
Transformer 40 VA (AZ-3) T40
Transformer 75 VA (AZ-5) T25
TECHNICAL SUPPORT
For technical support on this and all Argo products, please contact
ECRInternationalTechnicalService at 1-800-325-5479. Please have
your model number available when calling.
Information Needed When Calling
Model Number
Installation Date
Installer
REPLACEMENT PARTS

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