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9 rs-485 comm (+, gnd, & -), 10 rs-232 comm (txd & rxd), 11 vfd/blower (0-10 & agnd) – AERCO BMK 1500-2000 User Manual

Page 29: 12 interlocks, 1 remote interlock in (out & in), 2 delayed interlock in (out & in)

9 rs-485 comm (+, gnd, & -), 10 rs-232 comm (txd & rxd), 11 vfd/blower (0-10 & agnd) | 12 interlocks, 1 remote interlock in (out & in), 2 delayed interlock in (out & in) | AERCO BMK 1500-2000 User Manual | Page 29 / 188 9 rs-485 comm (+, gnd, & -), 10 rs-232 comm (txd & rxd), 11 vfd/blower (0-10 & agnd) | 12 interlocks, 1 remote interlock in (out & in), 2 delayed interlock in (out & in) | AERCO BMK 1500-2000 User Manual | Page 29 / 188