External Backup Heater Kit ESIE09-08A
268 Appendix
EKBUHAA6W1
Legend
S1L
Q1L
F1T
F1U
E1H + E2H + E3H
Q2L
K1M
K1A
K2M
K5M
F1B
X1M
X2M
K2A
Part number Description
E1H, E2H, E3H Backup heater elements
F1B Fuse backup heater (20A 400V)
F1U Fuse (5A T 250V)
F1T Thermal fuse backup heater
K1A Time relay (on-delay)
K2A Auxilary relay
K1M, K2M Contactor backup heater step
K5M Contactor for backup heater (all pole disconnection)
S1L Flowswitch
Q1L Thermal protector backup heater (manual reset)
Q2L Thermal protector inlet water (automatic reset)
X1M, X2M Terminal strip
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