Steffes HPB22 Owners Manual User Manual
Page 8
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D. HPB AIR DELIVERY CONTROL STRATEGY
(TABLE 3)
STAGE 2 HEAT CALL
MODE
STAGE 1 HEAT CALL
(EMERGENCY HEAT)
AIR CONDITIONING CALL
On-peak without
• HPB core blower energized.
• HPB core blower energized.
• HPB core blower
compressor control
• Supply air temperature
• HPB air discharge
de-energized.
maintained at pre-set
temperature maintained
• Heat pump air handler
comfort level.
at 160
o
F.
blower energized.
• If core temperature is below
• 130
o
low core temperature
• Heat pump compressor
the preset minimum temper-
switch bypassed.
energized.
ature, HPB will not respond.
Off-peak without
• HPB core blower energized.
• HPB core blower energized.
• HPB core blower
compressor control
• Supply air temperature
• HPB air discharge
de-energized.
maintained at pre-set
temperature maintained
• Heat pump air handler
comfort level.
at 160
o
F.
blower energized.
• If core temperature is below
• 130
o
low core temperature
• Heat pump compressor
the preset minimum temper-
switch bypassed.
energized.
ature, HPB will not respond.
On-peak with
• HPB core blower energized.
• HPB core blower energized.
• HPB core blower
compressor control
• Supply air temperature
• HPB air discharge
de-energized.
maintained at pre-set
temperature maintained
• Heat pump air handler
comfort level.
at 160
o
F.
blower energized.
• 130
o
low core temperature
• 130
o
low core temperature
• Heat pump compressor
switch bypassed.
switch bypassed.
de-energized.
Off-peak with
• HPB core blower energized.
• HPB core blower energized.
• HPB core blower
compressor control
• Supply air temperature
• HPB air discharge
de-energized.
maintained at pre-set
temperature maintained
• Heat pump air handler
comfort level.
at 160
o
F.
blower energized.
• If core temperature is below
• 130
o
low core temperature
• Heat pump compressor
the preset minimum temper-
switch bypassed.
energized.
ature, HPB will not respond.