W2W Series Heat Pump
Ecologix Heating Technologies Inc
Page
15
www.ecologix.ca
221 Holiday Inn Drive Cambridge ON
ph: 519-658-4330
7.5-8.5). Add chemicals, as appropriate, to
maintain acidity levels.
8. 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.
UNIT START-UP PROCEDURE
1. Adjust all valves to their full open position.
Turn on the line power to all heat pump units.
2. Operate each unit in the cooling cycle. Loop
water temperature entering the heat pumps
should be between 70° F and 110° F
3. Operate each heat pump in the heating cycle
immediately after checking cooling cycle
operation. A time delay will prevent the
compressor from re-starting for approximately
five (5) minutes.
4. Establish a permanent operating record by
logging the unit operating conditions at initial
start-up for each unit.
If a unit fails to operate, conduct the following
checks:
A. Check the voltage and current. They should
comply with the electrical specifications
described on the unit nameplate.
B. Look for wiring errors. Check for loose
terminal screws where wire connections have
been made on both the line and low-voltage
terminal boards.
C. Check the supply and return piping. They
must be properly connected to the inlet and
outlet connections on the unit.
D. If the checks described above fail to reveal
the problem and the unit still will not operate,
contact a trained service technician to ensure
proper diagnosis and repair of the equipment
WARNING
Ensure all water valves and controls are set
correctly to allow water to flow through the
load and source side of the unit prior to
engaging the compressor. Failure to do so
can lead to freezing of the heat exchangers
or water lines, which can permanently
damage the heat pump.
WARNING
Do not leave system filled in a building
without heat during the winter unless
antifreeze is used. Heat exchanger coils
never fully drain by themselves and will
freeze unless properly winterized.
Note: Units have a five-minute time delay in
the control circuit that can be eliminated on
the ICM PCB. See wiring diagram on unit for
wiring details. Jumper is marked “test”
Table 7: Water Temperature Change Through heat Exchanger
Water Flow, gpm
Rise, Cooling ºF
Drop, Heating ºF
For Closed Loop: Ground source or Closed Loop
Systems at 3gpm per ton
9 – 12
4 – 8
For Open Loop: Ground Water Systems at 1.5gpm
per ton
20 – 25
10 – 17