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KAH Operation & Maintenance Guide
Page: 14 of 88
SECTION 2 - START-UP & OPERATION (CONTINUED)
Jumper Selections
When selected, the AMS-60 factory provided transducers
technically provides six (6) jumper selections which allow
you to select the appropriate range for your application.
However, only three (3) are applicable to the AMS-60
function. The jumper selections are as follows: 0-1”, 0-.5”,
and 0-.25”. These are field adjustable. To determine the
correct jumper setting for your application, refer to the
equation and examples on this and the next page for the
KAH.
Input Power
A 24VAC power supply can be wired into the supply voltage
terminals on the actuator and transducer.
CFM Input Signal to Damper Actuator
2-10VDC (Belimo)
0-10 VDC (Johnson Controls)
CFM Output Signal from Transducer
0-10VDC
Sequence of Operation
A 0-10 VDC or 2-10VDC control signal is sent to the AMS
60 damper actuator from the Building Automation System
(BAS). The BAS maintains the required CFM by modulating
the actuator on the control damper. The BAS receives a
0-10 VDC signal back from the transducer, confirming the
CFM supplied. Upon loss of power, the AMS-60 actuator
returns to a closed position.
AHU Airflow Station Specifications
Furnish and install, at locations indicated on plans and/or
schedules, an air monitoring station integral with outside
air control damper, stationary airflow sensing device,
and air straightening section. The integral air monitoring
station shall incorporate pressure sensing ports built into
the sensing device and shall control the minimum amount
of outside air as recommended by ASHRAE 62-2001. The
airflow monitoring station must be tested in accordance
with AMCA Standard 611-95 in an AMCA registered
laboratory. The airflow monitoring station must bear the
AMCA Certified Ratings Seal for Airflow Measurement
Performance. If airflow station is internally mounted inside
air handling unit and incorporates a control damper, the
control damper must comply with leakage rates of damper
specification.
If ASHRAE 90.1 is referenced, also include
If airflow station is internally mounted inside air handling
unit and incorporates a control damper, the control damper
must comply with leakage rates per ASHRAE 90.1-1999.
All damper leakage rates must be provided in submittal
data on a CFM/ft
2
at 1” w.g. basis.
AMS-60 (Indoor Solution)
Use the following equation to determine the correct jumper
setting for your application:
CFM=(AREA*Ka)*Pams (1/m),
Where:
Ka = 3213
Pams = Range of transmitter
(l/m) = 0.54.
Locating and Installing Actuators
Standard actuators are direct coupled on the damper
jackshaft. Refer to the instructions in the AHU Installation
Guide to install the actuators.
Damper Blade Orientation
Use the following instructions to orient the damper blades.
Return Air and Mixing Dampers
1. Position the blades so that they will be open after the
actuator is installed, which will be the dampers spring
return position.
2. Note whether the damper shaft is rotated clockwise
or counterclockwise.
