ECR International Argo AZ Series Instruction manual

INSTALLATION, OPER ATION &
MAINTENANCE MANUAL
ARGO AZ SERIES
CONTROLS
AZ-5
AZ-3
MODELS
AZ-3
AZ-5
Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 325 5479
www.ecrinternational.com
PN 240005130 REV. D [11/15/2021]

Safety Symbols and Warnings �������������������������������������������������������������������������������������������������������������3
Introduction��������������������������������������������������������������������������������������������������������������������������������������3
Mounting Instructions ������������������������������������������������������������������������������������������������������������������������3
AZ Circuit Board �������������������������������������������������������������������������������������������������������������������������������� 4
Electrical Specications & wiring ���������������������������������������������������������������������������������������������������������� 5
Sequence of Operation ����������������������������������������������������������������������������������������������������������������������� 5
AZ-5 Wiring Schematics ���������������������������������������������������������������������������������������������������������������������5
AZ Control w/DPM-2 Outdoor Reset Control ������������������������������������������������������������������������������������������6
AZ Control w/Power Robbing Thermostat ����������������������������������������������������������������������������������������������7
Replacement Parts ����������������������������������������������������������������������������������������������������������������������������� 8
Technical Support ������������������������������������������������������������������������������������������������������������������������������ 8
DANIMPORTANT: Read and understand the following instructions COMPLETELY before installing!!
TABLE OF CONTENTS
Keep this manual near boiler
Retain for future reference
2
PN 240005130 Rev. D [11/15/2021]
Information and specications outlined in this manual in eect at the
time of printing of this manual. ECR International, Inc. reserves the
right to discontinue, change specications or system design at any
time without notice and without incurring any obligation, whatsoever.

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
NOTICE
Used to address practices not related to personal
injury�
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury�
!!
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury�
!
DANGER
Indicates a hazardous situation which, if not avoided,
WILL result in death or serious injury
!
This is the safety alert symbol. Symbol alerts you to
potential personal injury hazards� Obey all safety messages
following this symbol to avoid possible injury or death.
Become familiar with symbols identifying potential
hazards�
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard� Improper installation could result in death
or serious injury. Read this manual and understand
all requirements before beginning installation�
!
Introduction
This manual is intended to familiarize the installer and
user of the Argo AZ Series Zone Valve Controls with their
installation and operation to assure normal trouble-free
operation�
Argo Controls are designed and manufactured with quality
components for maximum life and durability and require
minimal service. To insure a satisfactory installation, it is
imperative that the instructions be followed carefully before
operating the relays� Failure to do so may result in breach
of warranty.
Mounting Instructions
Mount the Argo AZ Series 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 control 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 amplied 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.
WARNING
Fire, Explosion, Asphyxiation, Electrical shock
hazard! Flooding will result in damages such as
electrical problems, corrosion, inoperative parts,
mold and other unforeseen issues which can
occur over time. Any equipment determined by
a professional as damaged by a ood, dened as
excess of water or other liquid, shall be replaced.
Failure to follow these directions will result in a
Hazardous Situation�
!
3
PN 240005130 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ CIRCUIT BOARD
The diagram below represents Argo AZ-5 Zone Valve Control. 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)
4
PN 240005130 Rev. D [11/15/2021]

AZ 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�
General Wiring Notice
All primary wiring must be 14 AWG minimum. Torque
terminal screws 6 to 7 inch pounds.
U.S.A. - National Electric 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.
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Electrical Specications & Wiring
WARNING
Electrical shock hazard. Disconnect power before
installing or servicing. Failure to follow these
instructions could result in death or serious injury�
!
ELECTRICAL SPECIFICATIONS
Model Number Zones Transformer Voltage
AZ-3 3 120V, 60 HZ, 40VA
AZ-5 5 120V, 60 HZ, 75VA
AZ-5 WIRING SCHEMATIC
5
PN 240005130 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
TYPICAL WIRING APPLICATION USING DPM-2
OUTDOOR RESET WITH ARGO AZ-3
ZONE VALVE CONTROL
AZ Control w/DPM-2 Outdoor Reset Control
DPM-2 Outdoor Reset Control is designed to raise or lower
the temperature of the boiler supply water based on 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
6
PN 240005130 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
TYPICAL APPLICATION USING (2) IR882 RELAYS TO
ISOLATE POWER STEALING THERMOSTATS FROM AN
ARGO AZ-5 ZONE CONTROL PANEL
AZ Control W/Power Robbing Thermostat
Argo AZ control should work well with all standard and
most programmable setback thermostats. In the event the
programmable thermostat you are using causes the control
board relays to chatter, you will require an external 24V
power supply (transformer) and an Argo IR882 Isolation
Relay. Please refer to the literature with the IR882 for
proper wiring and transformer sizing.
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
X
2
X
2
100
ZONE 2
1.2 K
W
T
R
T
X
3
X
3
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
X
2
X
2
100
ZONE 2
1.2 K
W
T
R
T
X
3
X
3
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
NOTE: 6VA per thermostat should be
acceptable for most applications� Consult
your thermostat manufacturer’s literature for
their actual VA requirements�
7
PN 240005130 Rev. D [11/15/2021]

For technical support on this and all Argo products,
please contact ECR International Technical Service at
1-800-325-5479. Please have your model number
available when calling.
Information Needed When Calling
Model Number
Installation Date
Installer
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Technical Support
Replacement Part
Part Description Part
Number
Circulator plug-in relay (24 VAC coil) R35C
Transformer 40 VA (AZ-3) T40
Transformer 75 VA (AZ-5) T25
All specications subject to change without notice.
©2021 ECR International, Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 325 5479
www.ecrinternational.com
This manual suits for next models
2
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