Argo ARM Series Instruction manual
ARM SERIES
Switching Relays
With Priority
INSTALLATION, OPER ATION &
MAINTENANCE MANUAL
Models
ARM-2P
ARM-3P
ARM-4P
ARM-6P
AD-1
AD-4
AD-1
AD-4
ARM-2P
ARM-3P
ARM-4P
ARM-6P
Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 253 7900
www.ecrinternational.com
PN 240005129 REV. C [03/01/2018]
2PN 240005129 Rev. C [03/01/2018]
Safety Symbols and Warnings ..........................................................................................3
Introduction...................................................................................................................3
Product Features ............................................................................................................4
Mounting Instructions .....................................................................................................5
Electrical Specications & wiring .......................................................................................5
Sequence of Operation ....................................................................................................6
ARM-4P Wiring Schematic................................................................................................7
ARM “Cold Start” Applications ..........................................................................................8
ARM “Tankless Coil” Applications..................................................................................... 11
ARM With AD Expansion Modules .................................................................................... 13
ARM To Field Replacement Transformer............................................................................ 14
ARM With DPM-2 Outdoor Reset Control ......................................................................... 15
ARM With Power Robbing Thermostat .............................................................................. 16
Replacement Parts........................................................................................................ 17
Technical Support ......................................................................................................... 17
IMPORTANT: Read and understand the following instructions COMPLETELY before installing!!
Keep this manual near boiler
Retain for future reference
TABLE OF CONTENTS
Information and specications outlined in this manual in effect at the
time of printing of this manual. ECR International reserves the right to
discontinue, change specications or system design at any time without
notice and without incurring any obligation, whatsoever.
3PN 240005129 Rev. C [03/01/2018]
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 ARM Series Switching Relays 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.
4PN 240005129 Rev. C [03/01/2018]
PRODUCT FEATURES
1.
Powerful 30 VA transformer – will operate up to 15
zones. (ARM-2) uses 20 VA transformer.
2.
Electronic fuse on transformer secondary protects
transformer from excessive loading. Automatically
resets.
3.
Data Port terminal allows for an easy connection of the
DPM-2 outdoor reset control.
4.
Three second time delay for boiler shutoff.
5.
24 VAC transformer terminals – for easy connection
of 3-wire thermostats and eld replacement of
transformer.
6.
Clearly marked terminals with clamping plates and
plenty of room for wiring.
7.
Expansion module plug-in – makes adding zone(s) easy
and economical through the use of the Argo AD-1 &
AD-4 expansion modules.
8.
Priority zone safety timer – Priority feature will turn
off (light off) temporarily if priority zone calls for heat
longer than 30 minutes, allowing all zones to operate
independently of each other. Repeats every 30
minutes.
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
1
2
3456
7
9
810 13
12
11
9.
Separate X-X (isolated switch) and ZC-ZR relays protect
boiler aquastat – can be used with either “cold start” or
“tankless coil” boiler application. ARM-2 controls do not
have ZC-ZR terminals.
NOTE: terminals ZC-ZR are 120VAC Connections.
10.
Plug-in replaceable relays for long life. High relay load
rating – 1/3 HP. U.L./CSA listed.
11.
LED lights turn on when relay contacts are closed.
Makes for easy troubleshooting by indicting relay
operating status.
12.
Switchable priority improves versatility.
13.
Double sided printed circuit board construction 100%
factory tested. Advanced printed circuitry compatible
wi t h m o s t pr o g r a m m a b l e t h e r m o s t a t s .
NOTE: The 4-zone ARM-4P is featured in this manual.
The ARM2-P, ARM-3P, and ARM-6P circulator relays have
identical electrical specications. Differences in operating
features are noted in this manual.
14.
ARM Series Switching Relays have a 5-year warranty,
AD Expansion Modules have 18-month warranty.
5PN 240005129 Rev. C [03/01/2018]
MOUNTING INSTRUCTIONS
Mount Argo ARM Series Switching Relays vertically on a
solid wall or partition.
Manufacturer recommends, for your convenience, 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 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. The
AD-1 requires a screw installed in the lower left hand
corner after the control is hung and leveled.
3.
Hang the control on the screw(s), position the case,
and start the bottom screws.
4.
Tighten all screws.
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
General Wiring Notice
Disconnect before installing or servicing.
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 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.
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 Specications
ARGO
Model
Number
Zones Transformer
Voltage
Relay
Switching
Action
Thermostat
Current
(amps)
Single
Phase
Motor
Rating
(Each
Circuit)
120 VAC
ARM-2P 2 120V, 60 HZ, 20VA SPST 0.085 1/3 HP
ARM-3P 3
120V, 60 HZ, 30 VA SPST 0.085 1/3 HPARM-4P 4
ARM-6P 6
AD-1 124 VAC
Supplied by ARM SPST 0.085 1/3 HP
AD-4 4
6PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Sequence of Operation
When a zone calls for heat (circuit is closed)
1.
Isolated switch coil is energized and the contact closes.
2.
X-X switch is closed. (X1-X1 and X2-X2 switches
closed on ARM-2P) and X-X indicator light turns on.
3.
Controller relay closed and ZC-ZR indicator light turns
on. (ARM-2P does not include ZC-ZR light). A ZC
to ZR connection is required, either factory-installed
jumper or through boiler aquastat. (ARM-2P does not
include ZC-ZR relay or terminals.) Terminals ZC-ZR are
120 VAC connections.
4.
Zone circulator relay closes turning on circulator.
“Circulator On” light turns on.
If the Priority Switch is “ON” Position:
1.
Zone 1 becomes priority zone.
2.
When zone 1 calls for heat, priority zone is activated
and all other zones are deactivated (Circulators for
zones 2 and higher and any zone modules will not
operate). “Priority On” light turns on.
3.
Built-in timer automatically shuts off priority feature
temporarily if priority zone calls for heat longer than 30
minutes allowing all zones to operate.
4.
Repeats every 30 minutes until priority zone is satised.
Prevents house freeze-up in event of indirect water
heater malfunction.
7PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
WIRING SCHEMATICS
8PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM “COLD START” APPLICATION
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
Factory installed jumper between ZC and ZR.
Each zone thermostat will signal the ARM control to operate
its zone circulator and start the boiler through the XX
isolated end switch.
JUMPER
Placed between terminals ZC and ZR. (Jumper is factory-installed in
this position.) Terminals ZC-ZR are 120 VAC connections.
Connect isolated switch terminals X-X to boiler thermostat connection
(see boiler manual).
NOTICE
ARM-2 does not have ZC-ZR Terminals. ARM-2 has 2
isolated switches marked X1X1 and X2X2.
9PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM “COLD START” WIRING
ARM-4P to MH L8148
ARM “COLD START” WIRING
ARM-4P to Millivolt Gas Valve
10 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM “COLD START” WIRING
ARM-4P to 24 Volt Gas Valve
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
11 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM “TANKLESS COIL” APPLICATION
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
REMOVE factory installed jumper
between ZC and ZR.
ARM “TANKLESS COIL” APPLICATION
Tankless coil requires a boiler aquastat. Each zone thermostat
will signal the ARM to start its zone circulator and send a call
for heat to the boiler aquastat. If boiler temperature drops
below the low limit setting, all circulating will cease until
temperature of boiler water is increased.
JUMPER
Remove factory-installed jumper between terminals ZC and
ZR.
Connect terminals ZC and ZR to corresponding ZC and
ZR terminals on boiler aquastat. Circulators for zones
connected to ARM relays will not operate if boiler tankless
coil aquastat low limit is not satised. Terminals ZC-ZR are
120 VAC connections.
PRIORITY
Circulators for additional zones will not operate when zone 1
(priority) circulator is actuated. Priority switch is ON.
When priority switch is not ON, all zones operate
independently of each other.
12 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM “TANKLESS COIL” WIRING
Any control connected to the ARM is isolated and protected
from circulator current with built-in 120 volt control relay.
WARNING
When using ZC-ZR careful attention must be paid to
keeping the polarity of the wiring consistent between
the Argo control and the boiler aquastat. Failure to
do so could result in a secondary source of power
activating the boiler under certain circumstances
which could result in serious injury or death. Always
disconnect power to both the Argo control and the
boiler when installing or servicing this product.
!
NOTE: This does not apply to model ARM-2P.
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
ARM “TANKLESS COIL” WIRING
ARM-4P to MH L8124 A or C
13 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
AD EXPANSION MODULE
AD-1
1.
AD-1 Expansion Module plugs into the ARM-2P, ARM-
3P, ARM-4P, and ARM-6P to provide one additional
heating zone.
2.
Multiples of AD-1 (single zone) Expansion Modules can
be used to provide up to 15 zones maximum. The 18”
connecting cable, which plugs into the ARM Circulator
Zone Relay, is supplied with the unit. Separate line
voltage is required.
AD-4
1.
AD-4 Expansion Module plugs into the ARM-2P, ARM-
3P, ARM-4P, ARM-6P, or AD-1 to provide four additional
heating zones.
2.
Combinations of AD-1 (single zone) with an AD-4 (4-
zone) Expansion Module can be used to provide up to 15
zones maximum. The 18” connecting cable, which plugs
into the ARM Circulator Zone Relay, is supplied with the
unit. Separate line voltage is required.
NOTICE
AD-4 expansion module does not have an out
to zone module terminal. If additional zones are
required a telephone jack tee adapter (Argo Item
#J8) can be plugged into the “in” from master
terminal. The incoming phone cord from the master
control and output phone cord to additional AD
modules can both be plugged into the telephone jack
tee.
SPECIFICATIONS
ARGO
Model
Number
Zones
Transformer
voltage
(24 VAC)
Thermostat
current
(amps)
Relay contact rating
(10 amps @ 120)
AD-1 1 Supplied by
master ARM 0.085 1/3 HP @ 120 VAC
AD-4 4
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
ARM TO AD EXPANSION MODULE WIRING
14 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM TO FIELD REPLACEMENT
TRANSFORMER WIRING
RELAY
RELAY
RELAY
RELAY
RELAY
RELAY
15 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM WITH DPM-2 OUTDOOR RESET
CONTROL
DPM-2 Outdoor Reset Control is designed to raise or
lower the temperature of boiler supply water based upon
proportionate drop or rise in temperature at the outside
sensor.
Control plugs into Argo control equipment with a data port
or as a stand alone device easily wired into almost any
system.
See the separate DPM-2 Installation Manual for more
information.
ARM WITH DPM-2 OUTDOOR RESET CONTROL
16 PN 240005129 Rev. C [03/01/2018]
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
ARM WITH /POWER ROBBING
THERMOSTAT
Argo ARM control works well with all standard and most
programmable setback thermostats.
If the programmable thermostat you are using causes the
control board relays to chatter, you will need an external
24V power supply (transformer) and Argo IR882 Isolation
Relay. Refer to the IR882 literature for proper wiring and
transformer sizing.
ARM WITH /POWER ROBBING THERMOSTAT
Two Wire Thermostat Option Three Wire Thermostat Option
17 PN 240005129 Rev. C [03/01/2018]
REPLACEMENT PARTS
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Part Description Part
Number
Circulator plug-in relay (24 VAC coil) R35
Control plug-in relay (120 VAC coil) (ARM-3, 4, and 6 only) R49
18” Telephone cable connector (connects to AD-1, AD-4) C1
Field-mounted 40 VA transformer (not used on AD-1, or AD-4) T40
Telephone Jack Tee Adapter J8
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
TECHNICAL SUPPORT
18 PN 240005129 Rev. C [03/01/2018]
NOTES
19 PN 240005129 Rev. C [03/01/2018]
NOTES
All specifications subject to change without notice.
©2018 ECR International, Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 253 7900
www.ecrinternational.com
BDR THERMEA GROUP
This manual suits for next models
6
Table of contents
