Heat Controller Water Source Heat Pump manual CommLink II Interface, WattMaster WHP, Section, 2-13

WattMaster WHP Section 2

CommLink II Interface

The CommLink II Interface provides for communications between the MiniLink communication interfaces installed on the system. The CommLink II is required for proper communications, even if a PC is not used. Locate the CommLink II near the computer or modem if they are installed on the system. The cable connections between the CommLink II and the computer or modem should be kept to less than twenty-five feet. The CommLink II comes complete with computer and modem cables, and a plug-in power supply.

COMPUTER (OPTIONAL)

POWER

24VAC

GND

COMMUNICATIONS

T

SHLD

R

RS-485SYSTEM MANAGER POWER SUPPLY

YS101716 REV. 1

SYSTEM MANAGER

COMM LINK II

INTERFACE

(MULTIPLE LOOP)

UNIT COMES WITH

STANDARD WALL MOUNT

120/24 VAC POWER SUPPLY

( MAY ALSO BE POWERED FROM 24VAC )

Remote Link (OPTIONAL)

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)

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

CPU

CPU

TO OTHER WHP CONTROLLERS

CommLink Interface Wiring

2	2-13
Installation and Wiring