General Information - Wiring - ECR International Utica Boilers MAH-100 Installation, Operation & Maintenance Manual

Electrical Wiring Information:
All field wiring shall conform to the authority having
jurisdiction or, in the absence of such requirements to:
• USA: National Electrical Code, ANSI/NFPA 70,
• Canada: Canadian Electrical Code, Part I, CSA
C22.1: Safety Standard for Electrical Installations.
Wiring diagrams shown in this manual utilize ARGO™
Controls, the optional use of an Indirect Domestic Hot
Water Tank, and optional use of a H2O Buffer Tank.
Reference the zone control manufacturer instruction
manual for control operation and priority setting of DHW
zones.
Open Therm
10k Ω DHW Indirect
Tank Sensor (125
Unit Only)
or
DHW Indirect Tank
Aquastat (Heating
Only Boilers)
* Ground Sensors using terminal 4

GENERAL INFORMATION - WIRING

BOILER CONTROL
G
*
0-10 V Connection
Zone Control
End-Switch
S
1K Ω
Outdoor
Reset
Sensor
DO NOT use 120 V thermostat
Note
terminals (M1- #1 and #2).
Provided Wiring and Piping
Note
illustrations are meant to show
system concepts only. Installer
is responsible for all equipment
required by authority having
jurisdiction.
Do Not
Use
8
SUPPLY Cord
120V/60HZ
PN 240011430 REV. O [07/01/2021]