10 | Heat Recovery Package TW Series Water to Water
TW Series Water to Water6720220047 (2016/02) Subject to change without prior notice
By monitoring and analyzing data from the compressor
and the thermostat demand, the module can accurately
detect the cause of electrical and system related failures
without any sensors. A flashing LED indicator
communicates the ALERT code and guides the service
technician more quickly and accurately to the root cause
of a problem.
When an abnormal system condition occurs, the
Comfort Alert module displays the appropriate ALERT
and/or TRIP LED.
The yellow ALERT LED will flash a number of times
consecutively, pause and then repeat the process.
To identify a Flash Code number, count the number of
consecutive flashes.
Every time the module powers up, the last ALERT Flash
Code that occurred prior to shut down is displayed for
one minute.Heat Recovery Package
HEAT RECOVERY PACKAGE
Water Tank Preparation
1. Turn off electrical or fuel supply to the water heater.
2. Attach garden hose to water tank drain connection
and run other end of hose out doors or to an open
drain.
3. Close cold water inlet valve to water heater tank.
4. Drain tank by opening drain valve on the bottom of
the tank, then open pressure relief valve or hot
water faucet.
5. Once drained the tank should be flushed with cold
water until the water leaving the drain hose is clear
and free of sediment.
6. Close all valves and remove the drain hose.
7. Install HR water piping.
HR Water Piping
All hot water piping MUST be a minimum of 3/8t O.D.
copper tube to a maximum distance of fifteen (15) feet.
For distances beyond fifteen feet but not exceeding sixty
(60) feet use 1/2” copper tube. Separately insulate all
exposed surface of both connecting water lines with 3/
8” wall closed cell insulation. Install isolation valves on
supply and return to the heat recovery. (Figure # 7)
Water Tank Refill
1. Open the cold water supply to the tank.
2. Open a hot water faucet to vent air from the system
until water flows from the faucet, then close.
3. Depress the hot water tank pressure relief valve
handle to ensure there is no air remaining in the
tank.
4. Carefully inspect all plumbing for water leaks.
Correct as required.
5. Purge all air from HR by depressing the schrader
valve on the HR Unit. Allow all air to bleed out until
water appears at the valve.
6. Before restoring the power or fuel supply to the
water heater, adjust the temperature setting on the
tank thermostat(s) to ensure maximum utilization of
the heat available from the refrigeration system and
conserve the most energy. On tanks with both upper
and lower elements and thermostats, the lower
element should be turned down to 100° F, while the
upper element should be adjusted to 120° F.
Depending upon the specific needs of the customer,
you may need to adjust the upper element
differently. On tanks with a single thermostat lower
the thermostat setting to 120° F or the “LOW”
position. After thermostat adjustments are
completed, replace access cover and restore
electrical or fuel supply to water heater.
Initial Start-Up
1. Turn on the heat pump. The HR pump should not run
if the compressor is not running
2. Turn HR switch to the “ON” position. The pump will
operate if entering water temperature to HR is
below 120° F.
3. The temperature difference between the water
entering and leaving the heat recovery should be 5°
to 15° F.
4. Allow the unit to operate for 20 to 30 minutes to
ensure it is functioning properly. The pump should
shut off when the water temperature entering the
heat recovery reaches 120°F.
This module does not provide safety protection! The
Comfort Alert module is a monitoring device and
cannot shut down the compressor directly.
Concentric water fitting (p/n 8733907119) is
recommended.
(See Figure # 7)
NOTICE: All piping from HRP to domestic
water tank must be copper or any metal of
stronger alloy.
NOTICE: Make sure all valves in heat
recovery water piping system are open.
NEVER OPERATE HR PUMP DRY.
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