The IQL15+ is a terminal unit controller which can be networked using LonWorks (Lon). It can communicate with other IQLs and LonMark devices via the Lon, and with IQ system networked devices via a LINC unit. It has 3 relay outputs (normally to control fan speed), and 4 triac outputs (normally to control valves or dampers). A fourth relay is used either as an electric heater output (/E version) or as an auxiliary contact output (/AUX version). It has 3 variable resistance inputs of which the first is normally a thermistor temperature sensor. There are also 2 digital inputs for monitoring manual buttons or alarm contacts, one of these (IN4) can be used to connect a Room Display.
Network
LON
AI
3
DI
2
DO
4
Triac
4
Comments
analogue input: thermistor only
Controllers
Application
Strategy
Power
Type
damper
raise/lower
24Vac
IQL15+/AR2/E/24VAC
heat or cool valve
raise/lower
24Vac
IQL15+/WR2/E/24VAC
heat or cool valve
thermic
24Vac
IQL15+/WT2/E/24VAC
heat and cool valve
raise/lower
24Vac
IQL15+/WR4/E/24VAC
heat and cool valve
thermic
24Vac
IQL15+/WT4/E/24VAC
damper
raise/lower
230Vac
IQL15+/AR2/E/230
heat or cool valve
raise/lower
230Vac
IQL15+/WR2/E/230
heat or cool valve
thermic
230Vac
IQL15+/WT2/E/230
heat and cool valve
raise/lower
230Vac
IQL15+/WR4/E/230
heat and cool valve
thermic
230Vac
IQL15+/WT4/E/230
Accessories
Description
Additional Product Type
Room Display with temperature and setpoint display and adjustment
