Low Temperature Cutout Selection - ClimateMaster Tranquility 30 Digital TE Series Installation, Operation & Maintenance Instructions Manual

about 10 gallons [37.9 liters] total. If more than one tankful
is required, the tank should be drained immediately
by opening the waste valve of the flush cart noting the
color of the discharge fluid. Adding food coloring to the
antifreeze can help indicate where the antifreeze is in the
circuit and prevents the dumping of antifreeze out the
waste port. Repeat if necessary.
5) Be careful when handling methanol (or any alcohol).
Always wear eye protection and rubber gloves. The
fumes are flammable, and care should be taken
with all flammable liquids. Open flush valves to flush
through both the unit and the loop and flush until fluid is
homogenous and mixed. It is recommended to run the
unit in the heating and cooling mode for 15-20 minutes
each to 'temper' the fluid temperature and prepare it for
pressurization. Devoting this time to clean up can be
useful. This procedure helps prevent the periodic "flat"
loop condition.
6) Close the flush cart return valve; and immediately
thereafter, close the flush cart supply valve, leaving a
positive pressure in the loop of approximately 50 psi [345
kPa]. This is a good time to pressure check the system
as well. Check the freeze protection of the fluid with the
proper hydrometer to ensure that the correct amount of
antifreeze has been added to the system. The hydrometer
can be dropped into the flush reservoir and the reading
compared to Chart 1a for Methanol, 1b for Propylene
Glycol, and 1c for Ethanol to indicate the level of freeze
protection. Do not antifreeze more than a +10°F [-12.2°C]
freeze point. Specific gravity hydrometers are available
in the residential price list. Repeat after reopening and
flushing for a minute to ensure good second sample
of fluid. Inadequate antifreeze protection can cause
nuisance low temperature lockouts during cold weather.
⚠
WARNING!
WARNING! Always dilute alcohols with water (at least 50%
solution) before using. Alcohol fumes are flammable and
can cause serious injury or death if not handled properly.
When handling methanol (or any alcohol), always wear
eye protection and rubber gloves as alcohols are easily
absorbed through the skin.
7) Close the flush cart return valve; immediately thereafter,
close the flush cart supply valve, shut off the flush cart
leaving a positive pressure in the loop of approximately
50-75 psi [345-517 kPa]. Refer to Figure 15d for more
details.
Low Water Temperature Cutout Setting - DXM2 Control
When antifreeze is selected, the LT1 jumper (JW3) should
be clipped to select the low temperature (antifreeze 10°F
[-12.2°C]) set point and avoid nuisance faults (see "Low
Water Temperature Cutout Selection" in this manual).
Tranquility 30 Digital ( TE) Series IOM - 60Hz HFC-410A
®
Ground Loop Heat Pump Applications
Chart 1a: Methanol Specific Gravity
Chart 1b: Propylene Glycol Specific Gravity
C
Chart 1c: Ethanol Specific Gravity
P1
R
Y1
Y2
W
O
G
R
⚠
C
AL1
P2
AL2
R
NSB JW1
Alarm
Relay
C
ESD
7"
Figure 17: Low Temperature Cutout Selection
OVR
H
A
P3
R
NO1
NC1
Acc1
Relay
COM
NO2
NC2
Acc2
COM
Relay
R
AO1 Gnd
JW3-LT1 jumper should be clipped
c l i m a t e m a s t e r . c o m
1.000
0.995
0.990
0.985
0.980
0.975
0.970
0.965
0.960
-50°F -40°F -30°F -20°F -10°F 0°F
-45.6°C -34.4°C -23.3°C
-40°C -28.9°C -17.8°C
Low Temperature Protection
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
-40°F -30°F -20°F -10°F 0°F 10°F
-40°C -34.4°C -28.9°C -23.3°C -17.8°C -12.2°C -6.7°C
5"
Low Temperature Protection
P4
Gnd B- A+ 24V (240Vac)
1.000
N.O.
P5
Com
0.995
Fan Enable
0.990
0.985
Test
0.980
0.975
-5°F 0°F 5°F 10°F 15°F 20°F
Micro
-20.6°C -17.8°C -15.0°C -12.2°C -9.4°C -6.7°C
U1
Low Temperature Protection
Fault Status
Off On
Off On
JW3
S3
Off On
CCH
Relay
S2
A0-1 A0-2
S1
P10
P11
Gnd T1 T2 T2 T3 T3 T4 T4
AO2
5 1/2"
Note: There is only
for low temperature operation
one T1 connection
R e v . : O c t o b e r 5 , 2 0 2 1
10°F 20°F 30°F 40°F 50°F
-12.2°C -1.1°C 10°C
-6.7°C 4.4°C
20°F 30°F 40°F
-1.1°C 4.4°C
(240Vac)
N.C.
N.O.
Fan Speed
P8
12V
P12
IN
1
OUT
Gnd
NC
25°F 30°F 35°F
-3.9°C -1.1°C 1.7°C
1
HP
HP
LP
6 1/2"
LP
LT1
LT1
Factory low
LT2
voltage Molex
LT2
connection for
RV
unit harness
RV
CO
12
CO
P7
RV
Factory low
Relay
voltage Molex
1
24Vdc
connection for
electric heat
harness
EH1
4
EH2
P6
Comp
Relay
CCG
CC
P9
T5 T5 T6 T6
DXM2 PCB
Use 4 mounting screws
#6 sheet metal screw 1" long
1.5
21