FEATURES & SPECIFICATIONS
HeatNet Control REV 1.38-1
Page 7
Specifications
Control
Microprocessor based PID modulating control (
NOT a safety limit
)
Environment
-40 F to 140 F, <90% RH non-condensing
Input Power
24 VAC, 500 ma
Relays
System Pump, Damper, Circulator, Alarm, DHW Pump 8A 250 VAC resistive
K8 on J4.1 &.2 for Base Loading and Dual Fuel 1/4 Amp
AC Interlocks
24 VAC – 120 VAC input
Control Inputs
AA, Heat Demand, 4-20ma Enable, OA override, T1-T2 (dry contact inputs)
4-20mA, 0-10 VDC (20mA source current)
Dimensions
Board: 9” wide: 6” high : 2” deep, Enclosure: 11 ¾” wide: 10” high : 5” deep
Temperature Sensors
NTC thermistor, 10K @ 77 F, ,+/- 1 F; 1k PT RTD
USB
1.0
RS485 MODBUS
Modbus RTU
Boiler-to-Boiler
HeatNet (H-Net)
Network
Optional LonWorks, BACnet available bridge to MODBUS port
