1721/18UE
8-3
Electronics
Item Part Number Description
1 826-2256
Interface Board- (All Except Electronic Thermostat
Controller)
2 826-2031
Thermatron Board- (Electronic Thermostat Controllers
Only)
3 807-0855 Transformer, 120V, 50/60 Hz –12V 20VA (480V Units)
* 807-0979 Transformer, 208-240V, 50/60Hz –12V 20VA
4 807-0800 Transformer, 120V 50/60 Hz –24V 50VA (480V Units)
* 807-0680 Transformer, 208-240V, 50/60Hz –24V 20VA
5 807-3611 Relay, 24VAC
6 807-1071 Contactor, Mercury- 240VAC 30-Amp (17 kW Units)
* 807-0884 Contactor, Mercury- 240VAC 50-Amp (21 kW Units)
7 810-1202 Contactor, Latching- 40-Amp, 3-Pole
* 807-2278 Fuse, 20-Amp
8 806-3660 Sound Device- All Except KFC18E
9 806-5974SP Speaker, Sound- KFC18E Only
* 807-3577 Breaker, Circuit 7 amp (120V Filter Circuit)
* 807-2104 Microswitch
* 807-3932 Relay, 12VDC
* Not illustrated.