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SETPOINT PARAMETERS (continued)
Variable Name
Return High Static
Pressure Limit
Return Low Static
Pressure Limit
Return Fan Vane
Motor Speed
Return Fan
Control Band
Mixed Air Preheat
Setpoint
Preheat Control
Mixed Air High
Temperature Limit
Mixed Air Low
Temperature Limit
OA Temperature
Preheat Lockout
IAQ Economizer
Minimum Position
Return Fan
PI Gains
Preheat
PI Gains
Variable Label
Functional Description/Program Options
RET_STATIC_
Return Air Flow High Static Limit, in inches water
HI_LIM
column (in. wc). Will shut down fan upon sensing
excessively high pressure. Available range is 0.0
to 10.0 in. wc. Applicable to PM7600B,
Version 2.0 or later.
RET_STATIC_
Return Air Flow Low Static Limit, in inches water
LO_LIM
column (in. wc). Will shut down fan on sensing
excessively low pressure. Available range is -5.0 to
5.0 in. wc. Applicable to PM7600B,
Version 2.0 or later.
RET_FAN_
Return Fan Vane Motor Speed. Available range is
MOTOR_SPD
0 to 255 seconds. Applicable to PM7600B,
Version 2.0 or later.
RET_FAN_CB
Return Fan Control Band Available range is 0 to
100% of Supply Fan Air Flow.
Applicable to PM7600B, Version 2.0 or later.
MA_PRE_HT_SP
Mixed Air Preheat Set Point, used to control the
Preheat Coil. Available range is 33 to 90°F.
Applicable to PM7600B, Version 2.0 or later.
PRE_HT_CB
Preheat Control Band. Available range is 0 to 20°F.
Applicable to PM7600B, Version 2.0 or later.
MA_HI_TMP_LIM
Mixed Air High Temperature Limit, for Alarm only,
no shutdown. Applicable to PM7600B,
Version 2.0 or later.
MA_LO_TMP_LIM
Mixed Air Low Temperature Limit, for Alarm and
fan shutdown. Available range is 33° to 90°F.
Applicable to PM7600B, Version 2.0 or later.
OA_PRE_HT_
Outside Air Temperature above which Preheat is
LOCKOUT
locked out. Available range is 0 to 90°F.
Applicable to PM7600B, Version 2.0 or later.
IAQ_ECON_
Economizer Minimum Position on receipt of IAQ
MIN_POS
Digital Input in % Open. Available range is 0 to
100%. Applicable to PM7600B, Version 2.0 or later.
RET_KP
Return Fan Proportional Gain.
Range 0 to 10.
RET_KI
Return Fan Integral Gain.
Range 0 to 10.
Applicable to PM7600B, Version 2.0 or later.
PRE_KP
Preheat Proportional Gain.
Range 0 to 10.
PRE_KI
Preheat Integral Gain.
Range 0 to 10.
Applicable to PM7600B, Version 2.0 or later.
PM7600B INPUT AND OUTPUT OPTIONS
17
PM7600B
Rec-
ommended
Value
2.0
-2.0
5%
55°F
6.0
100
40
45
30
1
1
1
1
63-4309—2
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