Heat Controller DXM2 Layout and Connections, DXM2 UNIT CONTROLS, Heat Controller, Inc, sensor

Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual

DXM2 Layout and Connections

Service tool Communicating connection stat connection

Conventional

stat connection

Cabinet

temperature

sensor

(with variable speed pump)

P1
Y1
Y2
W
O
G
R
C
AL1
P2
AL2
R
NSB	Alarm
C	Relay
ESD
OVR
H

C

R

JW1

B- A+ 24V

P5

Fault Status

P4

(240Vac) (240Vac)

	N.O.	N.C.
		N.O.
Com
Fan Enable		Fan Speed

Test P12

Micro	1
U1

	Test Button
	to Speed up
P8	Time Delays
12V
IN	ECM Motor
OUT
	Connection
Gnd
NC	Water Coil
	Low Temp
	Limit Setting.
HP	JWT-LT1 jumper
	should be clipped
HP
	for low temp
LP
	(antifreeze)
LP
	operation
LT1
LT1	Factory low
LT2

Communications

and HWG

Settings

Accessory relays refer to DXM2 AOM for configuration

A
P3
R
NO1
NC1
COM1	F
NO2	act
NC2	ory
COM2	Us
	e
R

Acc1 Relay

Acc2 Relay

Off On

1 2 3 4

S3 Off On

1 2 3 4 5 6 7 8

S1

Off On

1 2 3 4 5 6 7 8

S2

A0-1 A0-2

JW3

	12
	RV
CCH	Relay
	1
Relay

4

Comp

LT2	voltage molex
	connection for
RV
	unit harness
RV
CO
CO
P7
24Vdc	Electric heat
	connection
EH1
EH2
P6
	Configurefigure
	modulating valve
	Modulating Valve
	or variable

COH COM

P11					P10				P9
AO2 Gnd	T1	T2	T2	T3	T3	T4	T4	T5	T5	T6	T6

CC	(Optional)
	speed pump

24V to compressor second-stage solenoid for Y2/full

load capacity

Variable speed pump Entering water temp Leaving water temp Leaving air temp Entering Hot water Temperature Compressor Discharge temperature

Use 4 mounting screws #6 sheet metal screw 1” long

5