9 Easy Steps to Start-up Your New G&D Chiller
Please view install videos online at
www.gdchillers.com/installation-videos
Vertical Air Chillers
1. Chiller positioning:
Clearance on all 4 sides of the chiller needs to be equal to one full width of the condenser
.
Electrical code may dictate greater clearance. There should be
no obstructions above the chiller
. Anchoring
required. Refer to the figure CHILLER CLEARANCE REQUIREMENTS for more details.
2. Install Wye-strainer (required) one size larger than mainline and purge valve on return line at chiller.
3. With the door switches in the OFF position, ensure all breakers are in the ON position.
The chiller must then be
supplied with power for at least 4 hours. Verify there is a visible oil level in compressor sight glasses before
proceeding.
4. Flush all piping lines:
a. Ensure chiller start/stop door switch remains in the OFF position.
b. Open supply valve, close return and open purge valve. Turn control power door switch ON, then process
pump door switch ON and
verify correct pump rotation
. Proceed with flushing the system. Once all
debris has been flushed from the system, remove as much water from system as possible.
5. Fill reservoir/ loop with 35% propylene glycol. Temporarily close the supply valve.
Confirm glycol pressure shows
20 PSI
using both the Carel controller and the manual pressure gauge located on the process pump discharge line
(refer to #9 if a lower pump pressure is required).
6. Open the supply valve, and circulate glycol through the entire loop for at least 30 minutes. Re-verify glycol mixture
using a refractometer. The glycol mixture MUST be 35 to 40 %. Correct as needed before proceeding.
Re-verify
oil level in compressor sight glasses before proceeding. Do not proceed unless there is a visible oil level in the
compressor sight glass.
7.
Open all service valves/refrigerant ball valves in chiller marked with tags
: Suction/discharge of each compressor,
and refrigerant ball valves at receiver. Models with remote condensers will have additional valves. Contact us for
more details as needed: 800-555-0973.
8. Turn chiller start/stop door switch the RUN position. Compressors should start to run. Fans to follow shortly.
9. Adjusting set points on Carel controller: Press the up/down arrows until SET displays in bottom right corner. Press
enter and change the temperature to desired set point. Pump pressure adjustment is also located here for the
VFD. If decreasing the pressure is required for tank jacket rating, do so using the Carel controller at this time.
PLEASE VISIT GDCHILLERS.COM TO VIEW OUR INSTALLATION VIDEOS & FAQS
*G&D Chillers welcomes any and all questions or concerns. We can be reached at
800-555-0973
or
541-345-3903
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