Easy Radiant Works Middleman EZM-90-40, Manual

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37
AB2017 CONNECTOR GUIDE
LED Code Indicator
3 Pin Molded Connector
for C4
8 Pin Molded Connector
for C1
4 Pin Molded Connector
for C3
4 Pin Molded Connector
for C2
1 2 3 4
5 6 7 8
9
10
11
12
13 14
16 15
17
18
19
C1 PIN 1 Red Loop to Pin 5
PIN 2 Yellow Common on combustion switch
PIN 3 Yellow Common on blocked flue switch
PIN 4 Red 24V Controller return
PIN 5 Red Loop to Pin 1
PIN 6 Green Ground to burner
PIN 7 Red 24 Volt to controller or W1 2-stage controller
PIN 8 Blue W2 return from 2-stage controller ONLY (7”wire)
C2 PIN 9 Black Igniter
PIN 10 Orange Flame sensor
IMPORTANT: 10 and 12 Loop together for units with
single flame sensor. For EZM dual flame sense, 10 and
12 lead to individual flame sensors.
PIN 11 White Igniter neutral
PIN 12 Orange Flame sensor no. 2 (for dual flame sense, Middleman)
IMPORTANT: 10 and 12 Loop together for units with
single flame sensor. For EZM dual flame sense, 10 and
12 lead to individual flame sensors. See Middleman
Series Installation / Operating instructions.
C3 PIN 13 Brown Inducer motor
PIN 14 Black Line 1 120V
PIN 15 White Line 2 neutral
PIN 16 White Inducer motor neutral
C4 PIN 17 Green Valve common
PIN 18 Blue Valve 2-stage ONLY (18” wire)
PIN 19 Red Valve