Trane CNT-SVX07C-EN, Zone Controller, N512 manual Agency listing/compliance, Additional components

Chapter 1 Overview and specifications

Agency listing/compliance

CE—Immunity: EN 50082-1:1997; EN 50082-2:1995

CE—Emissions: EN 50081-1:1992 (CISPR 22) Class B

UL and C-UL 916 listed: Energy management system

UL 94-5V (UL flammability rating for plenum use)

FCC Part 15, Class A

ASHRAE Cycle 1 & Cycle 2 control sequences

Additional components

The Tracer ZN521 zone controller requires the use of additional compo- nents for monitoring and proper control of the associated equipment. The use of specific components depends on the application. These components are not included with the Tracer ZN521 zone controller.

Power transformer

Use a UL-listed Class 2 power transformer supplying a nominal 24 Vac (19–30 Vac) to power both the Tracer ZN521 zone controller (14 VA) and its associated output devices, including relays and actuators, to a maxi- mum of 12 VA per output utilized.

Water, duct, and outdoor-air temperature sensors

Temperature sensors must be Trane 10 kΩ (at 25°C) thermistors. Enter- ing water and discharge air inputs may use a sealed temperature sensor (part number 4190 1100).

Binary input switching devices

Occupancy, condensate overflow, low-coil-temperature, and fan status inputs accept switching devices that may have normally open or normally closed dry contacts.

Output devices

Output devices connected to the Tracer ZN521 binary outputs cannot exceed 12 VA (0.5 A) current draw at 24 Vac.

Zone temperature sensors

Table 1 shows the Trane zone temperature sensors that are supported by the Tracer ZN521 zone controller.

Valve actuators

Valve actuators cannot exceed 12 VA draw at 24 Vac. For two-position valves, use actuators with on/off action, and with a spring action that

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