| Step |
Description |
Expected Duration |
| 3 |
Check the installation situation |
15.0 minute |
| 4 |
a. Accessibility to the VAV terminal unit and the control component sufficient? |
15.0 minute |
| 5 |
b. Specified direction of air flow has been maintained? 4.4 ‘Direction of airflow’ on page 15 |
15.0 minute |
| 6 |
c. Required upstream section maintained? Chapter 4.5 ‘Upstream conditions’ on page 16 |
15.0 minute |
| 7 |
d. Installation orientation of control component main-tained, depending on transmitter type of control component (observe installation orientation sticker. on page 15 |
15.0 minute |
| 8 |
e. Differential pressure measuring hoses undamaged and kink-free? |
15.0 minute |
| 9 |
Only for VAV terminal units for pressure control |
15.0 minute |
| 10 |
a. Selection of a suitable pressure measuring point |
15.0 minute |
| 11 |
b. Selection of a suitable pressure reference as comparison value (reference room with stable pressure conditions, with a constant atmospheric pressure) |
15.0 minute |
| 12 |
c. Select the measuring range of the pressure transducer with sufficient reserve. The measuring range must allow the detection of the nominal pressure range plus an appropriate tolerance. |
15.0 minute |
| 13 |
d. The following applies in particular to room pressure control systems |
15.0 minute |
| 14 |
(1) Sufficient cross section of the pressure meas-uring tubing, in particular when using ring ducts for the reference pressure (2) The pressure-controlled rooms must be suffi-ciently tight to be able to build up the desired room pressure.(3) The pressure-controlled rooms must allow an air transfer flow so that the room pressure can be regulated. (At least 10% of the total extract air of the room to air transfer flow.) (4) All doors and seals must be installed and holes must be closed in the walls in order to commission the rooms that are to be controlled. |
15.0 minute |
| 15 |
Check system readiness |
15.0 minute |
| 16 |
a. Fan switched on? |
15.0 minute |
| 17 |
b. Sufficient pre charge pressure available at the VAV terminal unit, i.e. minimum differential pressure according to data sheet complied with? |
15.0 minute |
| 18 |
c. Fire dampers/shut-off devices opened in the duct section? |
15.0 minute |
| 19 |
Check control component (for additional details see commissioning instructions for control component) |
15.0 minute |
| 20 |
a. Wiring error-free and supply voltage within tolerance zone? |
15.0 minute |
| 21 |
b. Characteristic curve of the setpoint value control suitable for the control component or its parameteri-zation? |
15.0 minute |
| 22 |
c. Zero point correction performed on control compo-nents with static transducer? |
15.0 minute |
| 23 |
d. If necessary, adapt the actuators again (only required for certain control components) |
15.0 minute |
| 24 |
Check control operation |
15.0 minute |
| 25 |
a. Setpoint control within the control range of the VAV terminal unit and its control component |
15.0 minute |
| 26 |
b. Check operating point at Vmin; if necessary, tempo-rarily disconnect external setpoint setting to prevent influence of external control and only check the con-troller itself at operating point Vmin. |
15.0 minute |
| 27 |
c. Check the operating point at Vmax; check the direc-tion of rotation of the damper blade in each case. |
15.0 minute |
| 28 |
d. Check damper blade position relative to the setpoint value; if the damper blade is fully open, the setpoint value is not reached. This is an indicator for an inad-equate differential pressure. Damper blade position detection,see 3.3 ‘Position of the damper blade’ on page 14 |
15.0 minute |
| 29 |
Room situation (pressure conditions and air transfer behaviour). The overall situation in the room depends on many factors, in particular: |
15.0 minute |
| 30 |
a. Supply air volume flows and their tolerance zone |
15.0 minute |
| 31 |
b. Extract air volume flows and their tolerance zone |
15.0 minute |
| 32 |
c. Tightness of the room and size of air transfer open-ings - Type of control components used (control speed) and their activation |
15.0 minute |
| 33 |
d. Type of the selected leading control concept, control based on volume flow or pressure |
15.0 minute |
| 34 |
Note: The planning concept and not the individual VAV terminal unit is decisive for achieving compliance with the desired room situation. Even if the technical data of the installed air terminal units are complied with, the desired room situation can only be achieved if the nec-essary components have been selected during the plan-ning phase, taking into account the requirements. |
15.0 minute |