8
Fan Output Power From VFD(s):
Field wire output power to proper fan from the correct VFD(s) terminals U, V,
and W.
Notice: Regardless of input power VFD(s) will only output 3 PH power.
Check rotation of fan(s).
Note:
Exhaust fan(s) will move some air in reverse (See rotation arrow on fan). Changing rotation may be
accomplished in two different ways; (1) Change any 2 leads connected to the VFD output U, V, and W or (2)
Change rotation in parameter 400.13 in the VFD (See Setting VFD Parameter Instructions Pg. 12).
Tempered MUA Connections:
When wiring a Tempered MUA unit the tempering lock-out connection must be made from the Control Box to the
Tempered MUA unit. If this connection is not made the unit may not operate properly. Tempered MUA units may
not operate properly below a 50% volume. This connection allows the Control Box to lock out the heat/cool
function of the unit when the turn-down is below 50%. When a Larkin Industries Tempered MUA unit is provided,
use low voltage wiring from terminal R and W1 in the Control Box to terminals R and W1 in the Tempered MUA
control panel. Other manufacturers Tempered MUA units have connections for this purpose that may have
different markings. See MUA wiring diagram or IOM for proper connection points.
DO NOT
run low voltage
wiring in same conduit as input power circuits (high voltage).
NOTICE: Remove jumper from terminals R and W1 in the Tempered MUA unit when making this
connection.
Содержание AFC-DCV
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