Bard Q-TEC QH Series, Руководство по установке

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Manual 2100-742B
Page 56 of 57
Energize on
Unit Terminal
Strip
Mode
Occupied/
Unoccupied
Inputs to the Board Outputs from the Board
RAT Y B W2 A1 D G G1 BK RV TWV W YO A2
Y1, G 1st Cooling Unoccupied X X X X X
Y1, G, A 1st Cooling Occupied X X X X X X X
Y1, G, A, D
1st Cooling
w/Dehum

Occupied X X X X X X X X
Y1, G, D
1st Cooling
w/Dehum

Unoccupied X X X X X X
Y1, G, B/W1 1st Heat Pump Unoccupied X X X X X X X
Y1, G, B/W1, A 1st Heat Pump Occupied X X X X X X X X X
Y1, G, B/W1,
A, D
1st Heat Pump
w/Dehum

Occupied X X X X X X X X X X X
Y1, G, B/W1, D
1st Heat Pump
w/Dehum

Unoccupied X X X X X X X X
Y1, G, B/W1,
W2
2nd Heat
Pump w/Strips
Unoccupied X X X X X X X X X
Y1, G, B/W1,
W2, A
2nd Heat
Pump w/Strips
Occupied X X X X X X X X X X X
Y1, G, B/W1,
W2, A, D
2nd Heat
Pump w/Strips
and Dehum

Occupied X X X X X X X X X X X X
Y1, G, B/W1,
W2, D
2nd Heat
Pump w/Strips
and Dehum

Unoccupied X X X X X X X X X X
D Dehum Unoccupied X X

X

X

D, A Dehum Occupied X X X X X X
TABLE 18
Dehumidification Relay Logic Board

Cooling takes precedence over dehumidification. A cooling call cancels dehumidification.

The relay logic board has a jumper (J1) on it to choose between “any-time dehumidification” and “occupied dehumidification”. The
factory default is P1-P2. With the jumper in the P1-P2 position, dehumidification is available any time there is a “D” input to the
relay logic board. With the jumper in the P2-P3 position, dehumidification is available when there is an occupancy signal to the “A1”
terminal, “D” would also need to be energized to dehumidify.
Refer to sequence of operation. In most cases cooling and heating modes take priority over dehumidification.