the thermostat at the predetermined setpoint. Restart the HVAC
system by manual reset, and observe that the alarm is
(7) With the HVAC system running, simulate a smoke
detector trip input signal at each detector, and observe and
verify operation as described in the sequence of operation.
Perform simulation without false-alarming any life safety
systems. Observe that the HVAC system shuts down and the alarm
is activated. Reset the detectors. Restart the HVAC system by
manual reset, and observe that the alarm is deactivated.
Procedures for Multizone Control System (Sample)
a) System Inspection. Observe the HVAC system in its
shutdown condition. Check to see that power (and main air) is
(are) available for the HVAC system control devices. Check to
see that the outside air damper, relief air damper, heating coil
valve, and cooling coil valve are closed, and that the return air
damper is open. Check to see that the preheat coil valve is
being controlled by the mixed air low limit controller.
system in the shutdown condition: take readings with a digital
thermometer at each temperature sensing element location; read
each controller display, and log the thermometer and controller
display readings; and check the calibration accuracy of the
sensing element to controller readouts for outside air, return
air, mixed air, cold deck air, and hot deck air temperatures.
c) Actuator Range Adjustments. Apply a signal to each
actuator by placing the controller manual-automatic switch in the
manual position. Verify visually the proper operation of the
actuators for dampers and valves. Vary the signal from 4 ma (or
3 psig) to 20 ma (or 15 psig), and verify that the actuators
travel from zero stroke to full stroke within the signal range.
Observe that sequenced and parallel operated actuators move from
zero stroke to full stroke in the proper direction, and move the
connected device in the proper direction from one extreme
position to the other. Example: Normally closed actuators are
closed at 4 ma (or 3 psig) and are open at 20 ma (or 15 psig).
Log the signal levels that move the controlled device to its
Control System Startup
(1) With the fan ready to start, apply the
optimized start mode command, and observe that the designated
supply fan starts. Observe that outside air and relief air