Heat Controller Water Source Heat Pump WattMaster WHP, Section, 4-18, Start-Upand Troubleshooting

WattMaster WHP Section 4

COMM LINK II

INTERFACE

(MULTIPLE LOOP)

POWER

24VAC

GND

COMMUNICATIONS

T

SHLD

R

RS-485	SYSTEM MANAGER POWER SUPPLY
	YS101716 REV. 1

SYSTEM MANAGER

T

SHLD

R

COM1-3

R1

R2

R3

R4

R5

COM4-5

+VDC

AIN1

AIN2

AIN3

AIN4

AIN5

GND

GND

AOUT1

AOUT2

AIN7

GND

			GND
		PRESSURE	24VAC
24VAC	GND	SENSOR
		EXPANSION	T'STAT

NETWORK LOOP

T SH R T SH R

TO OTHER MINILINKS

(NETWORK TERMINALS ONLY)

Communications Loop Wiring

4

GND
4RLY IO BD.	YS101790
4RLY IO BD.	YS101790
AIN1
AIN2
AIN3
AIN4
GND
AOUT1
4 ANALOG IN MOD I/O BD.
YS101784

CPU
OG
W
0-5	VDC
0-1 VDC

CPU

EWDOG

0-5 VDC

0-1 VDC

TO OTHER WHP CONTROLLERS

4-18 Start-Up and Troubleshooting