Mammoth V-Cube Slim E-Series (Standard Versions) - Manual (Page 9)

9
MAMM-VCS-IOM-1EB (October 2011)
1. Prior to first operation of the V-Cube Slim™, the
water circulation system must be cleaned and
flushed of all construction dirt and debris.
2. If the unit is equipped with water shutoff valves,
either electric or pressure operated, the supply and
return run-outs must be connected at each unit lo-
cation. This will prevent the introduction of dirt into
the unit.
3. Fill the system with water with all air vents open.
When the unit is filled with water, close all air vents
to remove all air..
4. Start the main circulator with the pressure reducing
valve open. Check vents in sequence to bleed off
any trapped air to provide circulation through all
components of the system.
5. While circulating water, check for and repair any
leaks in the piping. Drains at the lowest point(s) in
the system should be opened for the initial flush
and blow down, making sure city water fill valves
are set to make up water at the same rate. Check
the pressure gauge at the pump suction and manu-
ally adjust the makeup to hold the same positive
steady pressure both before and after opening the
drain valves. Flush should continue for approxi-
mately two hours, or until the drain water is clear
and clean.
6. Shut off supplemental heater (if applicable) and
circulator pump and open all drains and vents to
completely drain down the system. Short circuited
supply and return run-outs should now be con-
nected to the unit supply and return connections.
Cleaning and Flushing
7. Refill the system with clean water. Test the water
using litmus paper for acidity, and treat as required
to leave the water slightly alkaline (pH 7.5 to 8.5).
The specified percentage of antifreeze may also be
added at this time. Use commercial grade anti-
freeze designed for HVAC systems only. Do not
use automotive grade antifreeze.
8. Once the system has been filled with clean water
and antifreeze (if used), precaution should be taken
to protect the system from dirty water conditions.
Dirty water will result in system wide degradation of
performance and solids may clog valves, strainers,
flow regulators, etc. Additionally, the heat exchang-
ers may become clogged which reduces compres-
sor service life or causes premature failure.
9. Set the loop water controller heat add setpoint to
70°F and the heat rejection setpoint to 85°F. Sup-
ply power to all motors and start the circulation
pumps. After full flow has been established through
all components including the heat rejecter
(regardless of season) and air vented and loop
temperatures stabilized, each of the units will be
ready for check, test and start-up, and water bal-
ancing.