Bard MC5000 Series, Installation And Operation Instructions With Replacement Parts List

Page: 19 / 55

Manual 2100-746
Page 19 of 55
Basic Controller Input/Output
Specifications
(located on main controller board — units 1-3 and
secondary control board — units 4-6)
Each Unit
R – 24VAC hot
C – 24VAC common
W1 – Heat
W2 – 2nd stage electric heat
EC -
Unused
Y1 – 1st-stage cool
Y2 – 2nd-stage cool
G – Fan
O/B – Heat pump reversing valve
A – Ventilation
D – Dehumidification
H – Output for humidifier relay
General Inputs
Emergency Off: Shipped with jumper installed.
Changing state of input disables all
units.
Local Main sensor
Rem 1 Optional remote indoor temperature
sensor
Rem 2 Optional remote indoor or outdoor
sensor
Gen Generator interface. Contact closure
(continuity) triggers alarm.
Theft Theft (Bard Guard) input. Contact
closure (continuity) triggers alarm.
Vent Ventilation input. Contact closure
(continuity) triggers alarm.
Filter Dirty filter input. Contact closure
(continuity) triggers alarm.
Dust Dust sensor input. Contact closure
(continuity) triggers alarm.
LOR Alarm relay input. Contact closure
(continuity) triggers alarm.
ECON Unused
AUX 1-6 IN Unused
Alarm Board Specifications/Features
MC5000 Alarm Board I/O
NOTE: If this alarm board was not originally factory
installed, it can be field installed at any time.
The Bard part number for the MC5300 alarm
board is 8612-068. The Bard part number for
the MC5600 alarm board is 8612-069.
NOTE: All alarm and output relays are dry contacts
rated 1A @ 24 VAC.
NOTE: All alarm relay outputs have 5-second delay
before issuing to protect against nuisance alarm
signals.
Alarm Board Contacts
Alarm Board 1 Outputs
• UTILITY POWER (Relay Output NO, NC)
• GENERATOR (Relay Output NO, NC)
• 2ND STAGE (Relay Output NO, NC)
• CONTROL FAIL (Relay Output NO, NC)
• LOCK OUT 3 (Relay Output NO, NC)
• LOCK OUT 2 (Relay Output NO, NC)
• LOCK OUT 1 (Relay Output NO, NC)
• EMERG OFF (Relay Output NO, NC)
• HIGH TEMP 1 (Relay Output NO, NC)
• HIGH TEMP 2 (Relay Output NO, NC)
• LOW TEMP (Relay Output NO, NC)
• POWER LOSS 1 (Relay Output NO, NC)
• POWER LOSS 2 (Relay Output NO, NC)
• POWER LOSS 3 (Relay Output NO, NC)
• THEFT (Relay Output NO, NC)
• FILTER (Relay Output NO, NC)
• VENT (Relay Output NO, NC)
Alarm Board 2 Outputs
• POWER LOSS 6 (Relay Output NO, NC)
• POWER LOSS 5 (Relay Output NO, NC)
• POWER LOSS 4 (Relay Output NO, NC)
• LOCK OUT 4 (Relay Output NO, NC)
• LOCK OUT 5 (Relay Output NO, NC)
• LOCK OUT 6 (Relay Output NO, NC)