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
48
Unit Start Up Procedures
⚠
WARNING!
⚠
WARNING!
This unit contains HFC-(R410A), an
azeotropic mixture of R-32 (Difluoromethane) and R-125
(Pentafluoroethane). DO NOT VENT HFC-(R410A) to the
atmosphere. The U.S. Clean Air Act requires the recovery of
any residual refrigerant. Do not use R-22 service equipment
or components on R410A systems.
⚠
CAUTION!
⚠
CAUTION!
Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
⚠
WARNING!
⚠
WARNING!
To avoid possible injury or death due to electric
shock, open the power supply disconnect switch and secure
it in an open position during installation.
Phase Check Procedure
1. Turn compressor selector switches inside the TMW
control panel (low voltage side) to the off position.
2. Ensure the correct fuses are installed in the control
transformer fuse blocks. Turn on the power. The
“Power” light should be on.
3.
Connect BACView6 to I/O flex board at J6 (see wire
diagram E-4).
4. Override the Controller’s DDC outputs to the
compressors. Within the “Service Menu” of the
BACView6 index to the “Diagnostics Manual Mode”
section to engage the compressors individually for
startup purposes. Index to the “M1 Manual Mode”
prompt so the cursor is at the “Off” prompt to the
right. Press “Enter”. Use the increment key so the
“Off” prompt changes to “On” and then press “Enter”,
or press the “OK” key. Index down to the “MC1
Manual Mode On” prompt so the cursor is at the “Off”
prompt to the right. Press “Enter”. Use the increment
key so the “Off” prompt changes to “On” and then
press “Enter”, or press the “OK” key. Inside the low
voltage control section (left-most control door),turn
the Compressor 1 switch ON to bump compressor 1
and check for proper rotation using pressure gauges.
Once this is complete and correct rotation is verified,
turn the compressor 1 switch off and reverse the
manual mode for M1C1 compressor so it is “Off” by
similar prompts as outlined above. Use this same
technique to manually override the M1C2 compressor
to the “On” state. Turn on the switch marked
“Compressor 2” to bump the compressor and verify
that circuit 2 compressor has correct rotation.
Always
use proper electrical safety precautions.
5. Slowly close the Load water inlet isolating valve and
note that the pressure differential flow sensor stops the
machine. Note the flow rate at which this occurs. If too
much flow is lost before unit is stopped, reset switch
setting. The pressure differential flow sensor should
be set so the unit shuts down when the flow rate to
each water circuit drops below 60% of rated AHRI full
load conditions (indicating a 10°F temperature change
through the Load heat exchanger).
6. Slowly close the source water inlet isolating valve and
note that the pressure differential flow sensor stops
the unit. Note the flow rate at which this occurs. If too
much flow is lost before unit is stopped, reset switch
setting. The pressure differential flow sensor should be
set so the unit shuts down when the flow rate to each
Source water circuit drops below 25% of rated AHRI
full load conditions (indicating a 10°F temperature
change through the Source heat exchanger).
7. Repeat the tests of all other safety interlocks which
may be connected.
8. The antifreeze temperature sensor at the Load outlet
should be set to stop the compressors from operating
when the leaving chilled water temperature drops
below 36°F.
