Argo AZ-4CP Instruction manual

INSTALLATION, OPER ATION
& MAINTENANCE MANUAL
Information and specications outlined in this manual in eect at the
time of printing of this manual. ECR International, Inc. reserves the
right to discontinue, change specications or system design at any
time without notice and without incurring any obligation, whatsoever.
ARGO
ZONE VALVE CONTROLS
AZ-4CP / AZ-6CP
Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. [phone]
www.ecrinternational.com
PN 24005386 REV. D [11/15/2021]

TABLE OF CONTENTS
Safety Symbols .............................................................................................................3
Introduction .................................................................................................................3
Product Description ......................................................................................................3
AZ-4CP Control Board ...................................................................................................4
AZ-6CP Control Board ...................................................................................................6
Mounting Instructions ..................................................................................................7
Electrical Specications and Wiring ..............................................................................8
AZ-CP Wiring Schematics ...........................................................................................10
ZR-ZC Wiring ..............................................................................................................11
Indirect Water Tank Wiring ........................................................................................13
Field Selectable Option Switches ................................................................................14
Sequence Of Operation ...............................................................................................16
Zone Staging ..............................................................................................................17
AZ-CP Control Expansion ............................................................................................18
Replacement Parts .....................................................................................................20
Technical Support .......................................................................................................20
DANIMPORTANT: Read and understand the following instructions COMPLETELY before installing!!
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PN 240005386 Rev. D [11/15/2021]

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-CP Zone Valve Controls with their
installation and operation so as to assure normal trouble-
free operation.
Argo controls are designed and manufactured with quality
components for maximum life and durability and require
minimum service. To insure a satisfactory installation, it is
imperative that the instructions be followed carefully before
operating the control. Failure to do so may result in breach
of warranty.
Product Description
The Argo AZ-4CP and AZ-6CP Zone Valve Controls are
multi-zone (4 and 6 zone) controls for operating both
low voltage (24Vac) zone valves for hydronic heating.
The heating zones will be controlled by thermostats (low
voltage, digital, or power-robbing) or any other type of low
voltage control with SPST switching action. Priority for an
indirect red domestic hot water tank is provided by a eld
selectable switch on Zone 1. An option for a circulator on
Zone 1 (by eld selectable switch) is also provided. The
following capacities can be achieved:
• AZ-4CP: 4 zone valves with a primary circulator or 3
zone valves with priority (indirect hot water) circulator
and primary circulator.
• AZ-6CP: 6 zone valves with a primary circulator or 5
zone valves with priority (indirect hot water) circulator
and primary circulator.
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, dened
as excess of water or other liquid, shall be
replaced. Failure to follow these directions will
result in a Hazardous Situation.
!
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PN 240005386 Rev. D [11/15/2021]

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INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-4CP CONTROL BOARD
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PN 240005386 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-4CP Control Board
1. Transformer Spade Terminals (120 Vac) (Primary)
2. Transformer Spade Terminals (24 Vac) (Class 2)
3. Isolated End Switch X-X
4. Data Port Terminal - used for communication with the
Argo DPM-2 Outdoor Temperature Setback Control
5. LED Array:
• Status LED - ashes during normal operation
• Priority On - indicates priority mode is selected
• Primary Pump - indicates primary pump is energized
• Priority Pump - indicates the priority zone pump is
energized
• X-X Contact - indicates X-X contact is closed and
calling for heat from the boiler
• ZR On - indicates ZR-ZC dip switch is in the ON
position, priority zone is calling, and ZR-ZC terminals
are energized.
6. Thermostat Terminals (Class 2)
7. Green Indicator LED - indicates zone is calling for heat
8. Field Selectable Option Dip Switches (see “Field Selectable
Option Switches” in this manual for explanation)
9. Red Indicator LED - indicates zone valve is fully open
10. Zone Valve Terminals (Class 2)
11. ZC on Green Indicator LED
12. ZR-ZC Terminals (used for tankless coil applications)
(Primary)
13. Priority Pump Terminals (Primary)
14. Primary Pump Terminals (Primary)
15. Source Power Terminals (Primary)
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NOTE: The transformer found in the AZ-6CP control
contains a manual reset circuit breaker. Should the
control not power up, check to see if the circuit
breaker has tripped (a white indicator will be visible
on the side of the breaker). The circuit breaker can
be reset by pressing the black button found on top
of the transformer.
1
2
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-6CP CONTROL BOARD
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PN 240005386 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-6CP Control Board
1. Transformer - 75VA, 120V/24V 50 HZ
2. Circuit Breaker Reset Switch
3. Transformer Spade Terminals (120 Vac) (Primary)
4. Transformer Spade Terminals (24 Vac) (Class 2)
5. Isolated End Switch X-X
6. Data Port Terminal - used for communication with the
Argo DPM-2 Outdoor Temperature Setback Control
7. LED Array (see “AZ-4CP Control Board” in this manual
for specications)
8. Thermostat Terminals (Class 2)
9. Green Indicator LED - indicates zone is calling for heat
10. Field Selectable Option Dip Switches (see “Field
Selectable Option Switches” in this manual for
explanation)
11. Red Indicator LED - indicates zone valve is fully open
12. Zone Valve Terminals (Class 2)
13. ZC on Green Indicator LED
14. Priority Pump Terminals (Primary)
15. ZR-ZC Terminals (used for tankless coil applications)
(Primary)
16. Source Power Terminals (Primary)
17. Primary Pump Terminals (Primary)
Mounting Instructions
Mount the Argo AZ-CP Zone Valve 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 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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PN 240005386 Rev. D [11/15/2021]

Electrical Specications
Model
Number Zones Transformer Voltage
Relay
Switching
Action
Total Amp
Draw
(120VAC)
AZ-4CP 4 120V/60Hz/40Va SPST 7.2A
AZ-6CP 6 120V/60Hz/75Va SPST 7.2A
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.
WARNING
Electrical shock hazard. Disconnect power before
installing or servicing. Failure to follow these
instructions could result in death or serious
injury.
!
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Electrical Specications & Wiring
AZ-4CP WIRING SCHEMATIC
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PN 240005386 Rev. D [11/15/2021]

INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-6CP WIRING SCHEMATIC
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PN 240005386 Rev. D [11/15/2021]

The diagrams in this manual represent the Argo AZ-4CP Zone Valve
Control. The AZ-6CP has similar electrical connections. Dierences in
operating features are noted in this manual.
N
L
120V Line Voltage
To Primary
Circulator
To Priority Zone
Circulator
To ZR-ZC Terminals
On Boiler Control
PRIORITY
If priority switch is in ON
position, Zones 2, 3, &
4 will not operate when
priority zone is actuated.
(See Note# 2)
1 •
2 •
3 •
Do Not Use
Black
Black
Red
Red
•
•
Motor
End Switch
3 Wire
Zone
Valve
4 Wire Zone Valve
T-stat
TT
To Boiler
NL
Line To
Transformer
Tank
Control
• •
Indirect Water Heater
Aquastat or Thermostat
24V From
Transformer
T-stat T-stat
NOTES:
1. The switching relay terminals are approved for use with copper wires only.
Torque terminal block screws 6 to 7 inch pounds.
2. When using a priority zone circulator, a jumper is required between terminals 3
and 4 of Priority Zone 1. This jumper is not required when using a zone valve.
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AZ-CP WIRING SCHEMATIC
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PN 240005386 Rev. D [11/15/2021]