Honeywell DHC 23 Operating Instructions Manual page 30

TECHNICAL DATA
Battery type
Inputs
Outputs
Sensor cables
Accessories
28
CR 2032, 3 V, 170 mAh
Manufacturer: e.g. Varta, Panasonic
Maximum 6 temperature sensor inputs
Honeywell NTC 20 kΩ series
Remote setpoint unit TF 26
Floating outputs depending on DHC 23 type:
One floating output for primary District Heating valve actuator (relay 230 Vac; 0.6 A)
Second floating output for valve actuator (relay 230 Vac; 3 (1) A)
DHC 23-3 only:
The second valve actuator output can either be floating (relay) or modulating (2–10 V),
adjustable by software during start-up.
Binary outputs depending on DHC 23 type:
Maximum 4 relay outputs for pump control; 230 Vac; 3 (1) A.
Maximum current over all relays: 8 A.
Temperature diagnostic output
TTL level; transfer over RS 232 with separate adapter.
For troublefree operation we recommend using shielded sensor cables. The cable
cross-section should be at least 0.75 mm
Wall socket DHC 23-WS
2
, for 230 V AC at least 1.5 mm
DHC 23
2
.