Mammoth 5 to 40 Tons: Water-to-Water (K-Vintage) - Manual (Page 8)

8
MAMM-WSHP-IOM-1KA (September 2011)
Before powering up any K-Vintage unit, check the
following:
1. The high voltage supply matches the nameplate.
2. Field wire size, breakers and fuses are the correct
size.
3. Water piping is complete and correct.
4. The closed loop system is flushed and purged.
5. Loop pumps are correctly wired.
6. Access panels on the unit are in place and
secured.
7. Temperature controller is in the “Off” position.
Once the above items have been verified, you are now
ready to begin start-up.
1. Set temperature controller to highest position.
2. Set temperature controller to “cool”. Compressor
should not operate. The source water pump should
energize.
3. Slowly lower the temperature controller setting until
the compressor is energized. Measure the water
flow using pressure and temperature (P/T) ports
until the temperature difference is 7 to 10°F
between the entering and leaving water
temperature.
Start-up
4. Check the cooling high and low refrigerant
pressures.
5. Turn temperature controller to the “off” position.
The unit will stop running and the reversing valve
should de-energize.
6. Leave unit “off” for approximately five minutes to
allow pressure to equalize.
7. Adjust temperature controller to lowest setting.
8. Set temperature controller to “heat”.
9. Slowly adjust temperature controller to higher
temperature until the compressor energizes.
10. Check the heating high and low refrigerant
pressures.
11. Check for vibrations, noise, water leaks, etc.
12. Adjust temperature controller to correct mode and
set to maintain desired temperature.
13. If the unit does not operate, check the following
points:
a) Is supply voltage to the unit compatible?
b) If the unit operates but stops after a brief period:
i) Is there proper water flow rate within
temperature limits? Check water balancing;
backflush unit if dirt clogged.
ii) See troubleshooting guide on page 15 for
more tips.
Once the unit is up and running, instruct the equipment
owner/operator of correct temperature controller and
system operation.
IMPORTANT NOTE:
Avoid starting any electrical equipment for the first time
alone. Always have another person located away from
the unit that can turn off main power immediately.