American Standard TRACER CH532 Hardware architecture, use an auxiliary setpoint, CG-SVU01B-E4

Hardware architecture

TRACER CH532 offers customer the possibility to use inputs or outputs in order to:

-use an external water setpoint reset using an analog input (refer to figure 3)

-use an auxiliary setpoint

-connect a remote on/off of the unit or a circuit

-reset faults

-connect a remote Cooling/Heating switch

-return a circuit fault

Note: External water setpoint Based on a external signal input, it will be possible to offset the active setpoint from 0°C to 20°C. This function can be used in conjunction with the automatic setpoint reset function.

Figure 3

setpoint		5	4
	1
Water
	2	Ambient	3
		temperature

1.Leaving water temperature setpoint

2.Minimum value

3.Maximum value

4.Reset = 20°C

5.Active setpoint

Table 3: Customer Inputs and output summary list

		TRACER CH532 Medium	TRACER CH532 Large
		Single circuit units	Dual circuit units
AI	External water setpoint reset (option)	B8: 0..10V-0..20mA
DI	Auxiliary setpoint On/Off	ID8: 24Vac
DI	Circuit 1 On/Off (or Unit On/Off
	for single circuit units)	ID13H: 230Vac
DI	Circuit 2 On/Off	-	ID16H: 230Vac
DI	Faults external reset	ID6: 24Vac
DI	Cooling/Heating mode switch	ID7: 24Vac
DO	Circuit 1 fault	NO9: NO-230Vac
DO	Circuit 2 fault	-	NO11: NO-230Vac
DO	Unit status or additional
	heating demand	NO10: NO-230Vac

Legend:

AI: Analog Input

DI: Digital Input

DO: Digital Output

8 CG-SVU01B-E4