Heat Controller Water Source Heat Pump 2.2Becoming Familiar with the WHP Controller, 2.2.1, 4VAC

WattMaster WHP Section 4

2.2Becoming Familiar with the WHP Controller

							RAM SIZE
COMMUNICATIONS					RAM		SELECT JUMPER
			PIN 1				EPROM
	DRIVER CHIP
			INDICATION				PAL
RS-485									24 VAC Common for Inputs 1 - 3
COMMUNICATIONS									Fan-On/Off
LOOP
									Rev. Valve-On/Off (Heat 1)
COMMUNICATIONS									Compressor-On/Off (Heat 2)
LED
ADDRESS SWITCH									Heat Pump Reset (Cool 1)
( ADDRESS 18 SHOWN )					CPU				Aux. Heating or Cooling (Cool 2)
ANALOG INPUTS
Space Sensor									24 VAC Common for Inputs 1 - 3
Slide Adjust									DIAGNOSTIC BLINK
Supply Air Temp					OG				CODE LED
Leaving Water		COMMRECLD4RSHLDT.1V21			COMM485ADDRESW RAMSADDEPROM		COMMTEST32K8	4COM1COUT--RELAY5342153MUTPUT
		3							REAL TIME
Temp or
Dirty Filter									CLOCK CHIP
Lockout
					0-5	VDC			POWER LED
					0-1	VDC			24VAC
									POWER
STATIC PRESSURE									INPUT
SENSOR INPUT								Mounting Backplate
		4
		AIN5		Component Layout
	WHP ControllerGD							PWR
2.2.1	24 VACOUTPower Connector
		PRESURE						GND
		SENSOR						4VAC
This connector provides powerYS101564to the WHP Controller.
24VAC - The “hot” side of the control transformer.
GND -		The grounded side of the control transformer. If the secondary of the con-

Figuretrol4-3:transformer is not grounded, you must still observe polarity if the trans-

former powers any other device!

Warning: Connect only the GND terminal to the grounded side of a transformer

-Failure to properly observe polarity will result in damage to the system. Observe polarity at all points in the

system.

Start-Up and Troubleshooting 4-5