| 1 | NSS | PANEL - electro box (see 254H2) | 1 | |
| 2 | NSS | PANEL - contactors (see 254H3) | 1 | |
| 3 | NSS | BLOCK - terminals (see 254H4) | 1 | |
| 4 | 41-7179 | CONTROLLER | 1 | |
| 55-7700 | SCREW - controller | 4 | |
| 55-7369 | LOCKWASHER | 4 | |
| 55-7697 | FLATWASHER | 4 | |
| 55-7866 | NUT - captive | 4 | |
| 5 | 304-2887 | CONNECTOR - assembly (see 254H5) | 1 | |
| 6 | 41-3898 | CONNECTOR - assembly (see 254H5) | 1 | |
| 55-7664 | SCREW - connector | 8 | |
| 55-7369 | LOCKWASHER | 8 | |
| 55-7697 | FLATWASHER | 8 | |
| 55-7866 | NUT - captive | 8 | |
| 7 | 41-3899 | CONNECTOR - assembly (see 254H5) | 1 | |
| 55-7863 | SCREW - connector | 4 | |
| 55-7830 | FLATWASHER | 4 | |
| 55-9057 | LOCKWASHER | 4 | |
| 55-7749 | NUT | 4 | |
| 8 | 41-4686 | HEAD - control | 1 | |
| 9 | 41-4688 | SWITCH - assembly | 1 | |
| 10 | 41-4687 | HEAD - control | 1 | |
| 11 | 41-4689 | SWITCH - assembly | 1 | |
| 12 | 41-4690 | LIGHT - signal | 1 | |
| 13 | 41-4691 | LIGHT - signal | 1 | |
| 14 | 55-9996 | BUSHING - cable | 1 | |
| 51-558 | WASHER - sealing | 1 | |
| 51-101 | LOCKNUT | 1 | |
| 15 | 55-9992 | BUSHING - cable | 1 | |
| 51-355 | WASHER - sealing | 1 | |
| 55-9993 | LOCKNUT | 1 | |
| 16 | 51-848 | BUSHING - cable | 4 | |
| 51-843 | WASHER - sealing | 4 | |
| 51-849 | NUT - plug | 4 | |
| 17 | 51-559 | BUSHING - cable | 3 | |
| 51-558 | WASHER - sealing | 3 | |
| 51-101 | LOCKNUT | 3 | |
| 18 | 304-2593 | TRANSFORMER - current (15 amp) | 2 | |
| 19 | 304-2594 | TRANSFORMER - current (75 amp) | 1 | |
| 20 | 99-3281 | MOUNT - bandwrap | 15 | |
| 51-2030 | RIVET - mount | 15 | |
| 56-2330 | BANDWRAP | 15 | |
| 21 | 55-8137 | SCREW - ground | 1 | |
| 55-7085 | FLATWASHER | 2 | |
| 55-7342 | LOCKWASHER | 1 | |
| 55-7825 | NUT | 1 | |
| 22 | 55-7035 | SCREW - ground | 2 | |
| 55-7075 | FLATWASHER | 4 | |
| 55-7170 | LOCKWASHER | 2 | |
| 55-7354 | NUT | 2 | |
| 23 | 92-783 | LABEL - ground | 1 | |
| 24 | 41-3928 | CONNECTOR | 2 | |
| 25 | 41-3929 | CONNECTOR | 3 | |
| 26 | 41-3930 | CONNECTOR | 4 | |
| 27 | 41-3931 | CONNECTOR | 1 | |
| 28 | 41-3932 | CONNECTOR | 1 | |
| 29 | 41-3933 | CONNECTOR | 1 | |
| 30 | 41-3934 | CONNECTOR | 1 | |
| 31 | 41-3822 | CONNECTOR (10-pin) | 1 | |
| 32 | 41-3935 | CONNECTOR (4-pin) | 1 | |
| 33 | 41-6010 | CABLE - RS232 | 1 | |
| 34 | 41-6013 | CABLE - temperature sensor (return air) | 1 | |
| 35 | 41-6014 | CABLE - temperature sensor (fresh air) | 1 | |
| 36 | 41-6015 | CABLE - temperature sensor (duct air) | 1 | |
| 37 | 41-6016 | WIRE - grounding | 1 | |
| 38 | 41-6983 | WIRES - power | 1 | |
| 39 | 41-7683 | CABLE - CAN bus (X101) | 1 | |
| 40 | 41-7684 | CABLE - CAN bus (X102) | 1 | |