C L I M AT E M A S T E R WAT E R - S O U R C E H E AT P U M P S
Tranquility
®
Large Water-to-Water (TMW) Series
R e v. : O c t o b e r 5 , 2 0 2 1
C l i m a t e M a s t e r Wa t e r-S o u rc e H e a t P u m p s
44
Piping System, Cleaning & Flushing
Cleaning by flushing water through the Load and
Source piping system,
bypassing unit
, is the single most
important step to ensure proper start-up and continued
efficient operation of the system. Proper maintenance of
strainers and checking pH are also as important.
Follow the instructions below to properly clean and flush
the system:
1. Verify electrical power to the unit is disconnected.
2. Install the system with the supply hose connected
directly to the return riser valve. Use a single length of
flexible hose.
3. Open all air vents. Fill the system with the water. DO
NOT allow system to overflow. Bleed all air from the
system. Pressurize and check the system for leaks
and repair appropriately.
4. Verify all strainers are in place. Start the pumps, and
systematically check each vent to ensure all air is bled
from the system.
5. Verify make-up water is available. Adjust make-up
water appropriately to replace the air which was bled
from the system. Check and adjust the water/air level
in the expansion tank.
6. If possible, raise the Source loop temperature to
approximately 85ºF (29ºC). Open the a drain at the
lowest point in the system. Adjust the make-up water
replacement rate to equal the rate of bleed.
7.
Refill the system and add phosporic or sulfamic acid
for a 2% solution. If possible, raise the Source loop
temperature to approximately 100°F [38°C]. Circulate
the solution for a minimum of 8 to 24 hours. At the
end of this period, shut off the circulating pump and
drain the solution. Repeat system cleaning if desired.
8. When the cleaning process is complete, remove the
short-circuited hoses. Reconnect the hoses to the
proper supply, and return connections to each of the
units. Refill the system and bleed off all air.
9. Test the system pH with litmus paper. The system
water should be slightly alkaline (pH 7.0-9.0). Add
chemicals, as appropriate, to maintain acidity levels
10. When the system is successfully cleaned, flushed,
refilled and bled, check the main system panels,
safety cutouts and alarms. Set the controls to properly
maintain loop temperatures.
⚠
CAUTION!
⚠
CAUTION!
DO NOT use 'stop leak' or any similar chemical
agent in this system. Addition of these chemicals to the loop
water will foul the system and inhibit unit operation.
WARNING!
Polyolester Oil, commonly known as POE oil, or
Polyvinylether, commonly known as PVE oil, are synthetic
oils used in many refrigeration systems including those with
HFC-410A refrigerant. POE, or PVE oil, if it ever comes in
contact with PVC or CPVS piping, may cause failure of the
PVC/CPVC. PVC/CPVC piping should never be used as
supply or return water piping with water source heat pump
products containing HFC-410A as system failures and
property damage may result.
⚠
WARNING!
⚠
