I. Design Phase

  During the design phase TOTAL ENGINEERING  will provide instrumentation design assistance at no charge. We have found that early involvement with the end user and the mechanical design firm increases the likelihood of a smooth and timely installation and validation effort of the control system. To that end TOTAL ENGINEERING  will provide design support for your consulting engineers free of charge. This will include assistance in instrumentation selection, writing sequences of operation, providing P&ID drawings, system architecture drawings, and equipment specifications. In establishing a partnership between the end user, consulting engineer, and instrumentation contractor early in the design process all three parties can benefit.

   End user benefits include:

• Receives experience and input from the contractor into the design process in addition to that of the consultant.
• Receives a final design that is a joint effort between designer and contractor, preventing differences of opinion (finger pointing) during construction.

   Engineer benefits include:

• Receives intimate local knowledge of existing systems in plant from contractor.
• Receives assistance is design process tasks at no charge.

   Contractor benefits include:

• Able to prevent installation problems by heading them off in the design process.
• Receives a thorough understanding of the project prior to construction eliminating surprises.

We suggest that as the mechanical design progresses we meet regularly with your mechanical engineers to provide input.

II. Construction Phase

With ultimate responsibility for system performance, certain key elements should fall under the instrumentation contractors' scope thus providing the owner with a single source of responsibility. TOTAL ENGINEERING  will normally provide the following for a turn key HVAC controls installation project.

1. Detailed submittal including
   a) Panel production drawings
   b) Point to point wiring details
   c) Loop sheets
2. Control panel fabrication
3. Instrument procurement including:
   a) Transmitters
   b) Control valves
   c) Air flow stations
   d) Air flow/pressure control valves
   e) Control dampers and actuators not integral to AHU
   f) PC MMI hardware and software
4. Project management and coordination with other primary trades including Divisions 15 and 16
5. Electrical installation of control system
6. Pneumatic control tubing as required
7. System programming
8. Control systems start up
9. Assistance to balancing contractor
10. Operator training

III. Validation Phase

During the validation phase TOTAL ENGINEERING  will coordinate with the owner's validation contractor or in house team to execute the installation qualification and operational qualification. Typically TOTAL ENGINEERING will provide:

1. Instrument calibration
2. I/O loop tests
3. Instrument lists
4. Instrument installation verification
5. PLC hardware installation log
6. PLC software installation log
7. Application programming test results
8. Execution of 24 hour stability test with data logging

As built documentation

Conclusion

Ultimately only through teamwork can a control systems installation be truly successful. This involves a partnership between the owner, designer, contractor, and end user that is established early in the design and continues through to occupancy and production. TOTAL ENGINEERING  is pleased to have this opportunity to work with you.