DUNHAM-BUSH. Request for start-up and commissioning of Dunham-Bush chillers (Water Cooled or Air Cooled) and Condensing Units.

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1 DUNHAM-BUSH Request for start-up and commissioning of Dunham-Bush chillers (Water Cooled or Air Cooled) and Condensing Units. Job Name Unit Model Address & Location Unit Serial Number of Units Kindly complete, chop and sign this form and return to DBSS should you require Dunham-Bush to dispatch technicians or supervision to jobsite. Failure to complete and check all the below items may result in additional charges to your company. Additional charges will result if the start-up and commissioning exercise is delayed, or additional days are required due to site delays/problems, or if there is in-complete preparations on your scope of work. A. Dunham-Bush Unit 1. Erected on foundation.. 2. Spring isolators or ISO pads installed and adjusted to level unit. 3. Cooler/ Chiller vessel insulated.. 4. Chiller leveled within 1/16 per foot.. 5. Visually check for leaks ( oil dripping etc.).. 6. Standing Pressure of each refrigerant circuit refrigerant pressure chart attached ) 7. Inspect chillers or condensing units for damage.. 8. Check for enough clearance for proper airflow and servicing of unit. B. Air Handling Unit/ Fan Coil / Process System 1. All units tested, commissioned and operating without problem

2 2. All process system ready and completed for Operation C. Piping 1. Cleaned, flushed and pressure tested for leaks 2. Properly supported vibration eliminators installed.. 3. Air vents, thermometers and pressure gauges installed. 4. All water balancing and isolating valves installed and tested 5. All chilled and condenser water flow switches installed, tested and calibrated 6. All modulating valves and flow controls checked and calibrated 7. All modulating valves and flows set at design flow requirement 8. Water piping system properly purged of air and no air lock in system.. D. Units with Cooling Tower 1. Cleaned, tested and operational. 2. Tower fan tested and balanced.. 3. Tower water flow balanced 4. Water treatment services performed, auto chemical Feed has flow interlock

3 E. Water Pump 1. All condenser and chill water pump tested operational and balanced. 2. All pumps properly primed and no air lock in pumping system 3. Adequate and constant water supply available. 4. Required flow ratio must be maintained prior to start-up the chillers ( follow water flow curve on I.O.M.) F. Electrical Wiring 1. Adequate and constant power supply available.. 2. All power wiring and control completed to all of the system component and checked for terminal security tightness All circuit breakers and overload relays properly sized and installed 5. All wiring and grounding conforms to National Electrical Codes. 6. All automatic control devices checked, tested And operational 7. All field supplied main electrical boards, switch boards, starter boards and controls checked, tested and operational.. 8. Customer interlocks only as indicated on wiring diagram ( shielded cable as required ).. 9. Energize crank case heater for 24 hours prior to start-up of the compressors.. G. Units With Remote Refrigerant Condenser Piping 1. Required amount of refrigerant for system

4 Charging at job site 2. Entire system properly dehydrated must hold vacuum at 800-1,000 microns for a minimum of eight (8) hours with vacuum pump secured. 3. All fan cycling, damper control systems checked and operational.. 4. All control wiring installed.. H. Remote Evaporator Systems 1. Liquid line solenoid interlocked with Dunham-Bush Unit control panel.. 2. Entire system properly dehydrated must hold vacuum at 800-1,000 microns for a minimum of eight (8) hours with vacuum pump secured. 3. All thermal expansion valves properly sized and Properly installed. 4. All refrigerant piping installed in accordance With standard good practice and design criteria.. 5. All terminal equipment properly sized and properly installed.. 6. All automatic control devices checked and operational.. I. Conditions 1. Essential electrical power is available.. 2. Essential water supply for city usage and conditions is available.. 3. Full load available for proper test and balance of Dunham-Bush equipment

5 Services To Be Rendered Dunham-Bush engineers, supervisors, technicians and service representative will check, test, start-up and commission the chiller and condensing units in accordance to standard Dunham-Bush procedures and re-commendation and standard commercial good practices. Dunham-Bush Rendered Services Above Do Not Include Any Responsibility For The Following:- 1. Installation and operating of the temperature control system external to the chillers or condensing units Other wise agreed upon by both parties prior to performance of works. a. Balancing of the air distributor side of this system. b. Balancing of the water side of the system other than the chillers or condensing units. c. Balancing of refrigerant systems. 2. Electrical wiring performed by others. We (the dealer/contractor) request The present of Dunham-Bush personnel at the job site on or about (date) to check, test start-up and commission the equipment/system as required. On receipt of this form, Dunham-Bush will schedule their service personnel to this job within seven to fourteen days (7-14 days) of the requested date. It is understood that Dunham-Bush personnel will be at site to perform startup and commissioning exercise for a period not exceeding normal working days. We the undersigned agree that we will pay a free for such time that is spent on this over the specific normal working days agreed upon, due to delays and in-complete preparations on our part and scope of works/responsibilities. To cover this contingency, our contingency Purchase Order No. be issued with the assurance that if no addition time is required, this purchase order will be cancelled.

6 An overtime charge will be rendered for work executed on Saturday, Sunday and Public Holidays. Dealer / Contractor Address Signed by Company Stamp Full Name Position in Company