Johnson Controls T9800 Series, Technical Bulletin, Page: 12 / 12

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
Rev 1.4
12 | P a g e
2-pipe 3-wire valve
FCU RLY-1 RLY-2 RLY-3 RLY-4/5 RLY-4/5
2-pipe FCU with floor
heater RLY-1 RLY-2 RLY-3 RLY-4 RLY-4 RLY-5
2-pipe FCU with
TiO2/ESP
RLY-1 RLY-2 RLY-3 RLY-4 RLY-4 RLY-5
water source heat
pump RLY-1 RLY-2 RLY-3 RLY-4 RLY-5
Boiler RLY-4
3R2A 2-pipe FCU, three
speed fan RLY-1 RLY-2 RLY-3 AO-1 AO-1
4-pipe FCU, three
speed fan RLY-1 RLY-2 RLY-3 AO-1 AO-2
2-pipe FCU, ECM fan AO2 AO2 AO2 RLY-1 RLY-1 RLY-3
4-pipe FCU, ECM fan AO2 AO2 AO2 RLY-1 RLY-2 RLY-3
2-pipe 3 wire (relay),
ECM fan AO2 AO2 AO2 RLY-1/2 RLY-1/2
2-pipe FCU with floor
heater, ECM fan AO2 AO2 AO2 RLY-1 RLY-1 RLY-2 RLY-3
2-pipe FCU with
TiO2/ESP, ECM fan
AO2 AO2 AO2 RLY-1 RLY-1 RLY-2 RLY-3
water source
heat pump, ECM fan
AO2 AO2 AO2 RLY-1 RLY-2
2-pipe FCU (0-
10VDC), ECM fan
AO2 AO2 AO2 AO1 AO1
2-pipe FCU (0-
10VDC) with floor
heater, ECM fan
AO2 AO2 AO2 AO1 AO1 RLY-2 RLY-3
2-pipe FCU (0-
10VDC) with
radiator, ECM fan
AO2 AO2 AO2 AO1 RLY-2 RLY-3
AHU RLY1
(FAN)
RLY2
(DAMPER)
AO2 AO2