Wireless base unit

Single-zone pump relays control the operation of a single circulator or pump from a 24-volt signal. Relay includes secondary low-voltage terminals for boiler operation.Three-zone multi-pump relays control the operation of up to three pumps or circulators from dedicated 24-volt signals. Relay includes secondary low-voltage terminals for boiler operation and DHW priority options.

For use with Uponor radiant heating system thermostats, including the Climate Control Zoning System II Wireless Digital Thermostat (T-167) (part number A3800167) and the Uponor Heat-only Thermostat with Touchscreen (part number A3100101), the Uponor Slab Sensor, 10k (part number A9010599) senses the slab or floor temperature in radiant floor heating systems and provides temperature limit protection.

Two-wire, slow-opening thermal actuators mount directly onto stainless-steel heating manifolds to provide individual-loop flow control on a multi-zoned manifold (a manifold serving more than one zone). Note: See actuator-to-manifold compatibility table on page 96.

Heat-only thermostats with touchscreen are designed specifically for radiant floor heating. They use fully automatic differential and pulse width modulation (PWM) to ensure each zone or area is comfortable and energy efficient. The touchscreen provides a simple, intuitive display with large, easy-to-read numbers. The thermostat can control room temperature through operative temperature sensing, an optional floor sensor or a combination of both. The floor sensor can be used to maintain warm floors throughout the heating season as well as provide temperature limit protection. The thermostat is designed to operate using two wires, making it simple to install and service.