ClimateMaster Tranquility TSV 009 - Flushing;Purging Units with Climadry

climatemaster.com
51
Tranquility
®
20 (TE) Series
Rev.: June 5, 2020
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Flushing/Purging Units with ClimaDry
®
White Thermistor Wire
White Thermistor Wire Red Three-Way Valve Wire
When ushing/purging units equipped with ClimaDry
®
the unit should be fully ushed/purged before attempting
to ush/purge the ClimaDry coil. Once the unit is ushed,
energize the modulating three-way dehumidication valve
to allow ow through the ClimaDry hydronic circuit.
The unit must be powered (but not operating) during
ushing/purging. Unit power is required to operate the
three-way modulating valve during ushing.
Disable the ClimaDry sensor located in the supply air
stream by removing the white wire from the low voltage
terminal block (LVTB) as shown in the gure that follows.
Energize the modulating three-way dehumidication
valve by removing the red wire from the ACC1 ‘N.O.’ ter-
minal on the DXM2 board. Connect this wire to the ACC1
‘NC’ terminal of the DXM2 controller, as shown in gure
1, to energize the modulating three-way dehumidication
valve. Once energized, the valve will take 45 – 75 seconds
to fully shift. Continue ushing during this time. After the
valve has completed its shift, use the air bleed from the
top of the reheat coil to purge air from the coil.
De-energize the valve by removing the red wire from the
ACC1 ‘NC’ terminal on the DXM2 board. The valve will
spring return to its normal position in just a few seconds.
After the valve has fully returned, repeat the process of
running the valve through its cycle and purging air from
the reheat coil.
Under extreme circumstances this procedure may be
required multiple times to purge all air from the circuit.
After completing the ushing/purging procedure, recon-
nect the red wire to the ACC1 ‘N.O.’ terminal on the DXM2
for normal operation. Reconnect the white sensor wire to
the LVTB, as shown below. If air is allowed to collect in
the ClimaDry piping, nuisance trips may occur. Additional
ush/purge cycles may be used when required.
Flushing/Purging Wiring
Normal Unit Wiring
Red Three-Way Valve Wire