Logical Flow Diagrams; High Voltage Logical Flow; Control Logical Flow - Trane Arctic Thermafit AXM Installation, Operation And Maintenance Manual

Logical Flow Diagrams

The following section presents the simplified logical flow
block diagrams for the principal systems in the AXM air-to-
water modular heat pump.

High Voltage Logical Flow

AXM heat pump models are available in a range of voltage/
amperage/phase configurations to meet the demands of a
Figure 24. High voltage logical flow of single module
460 VAC, 60 HZ, 3 PHASE
MOP 124A, MCA 90A
SELECT CONDUCTOR SIZE RATED @ 75°C
PDB1
40A CB1 40A CB2
MS1 MS2
M1A M2A
OL1 OL2
M1 M2
REFRIGERATION REFRIGERATION
COMPRESSOR COMPRESSOR
15T/15HP 15T/15HP
460V, 3PH, 60 Hz 460V, 3PH, 60 Hz
38.6 RLA (1.4) 38.6 RLA (1.4)
34.6 RLA (1.56) 34.6 RLA (1.56)
174 LRA 174 LRA

Control Logical Flow

The heat pump uses low voltage for controller and sensor
circuits. See following figure.
62
2A FU1 2A FU2 2A FU3
MS1 MS1 MS2
HTR1A HTR2A HTR3A
HTR1 HTR2 HTR3
REFRIG COMP M1 REFRIG COMP M1 REFRIG COMP M2
CRANKCASE HEATER ACCUMULATOR HEATER CRANKCASE HEATER ACCUMULATOR HEATER
460V 460V 460V
93VA 93VA 93VA
HEAT TAPE POWER SUPPLY
FROM DISTRIBUTION PANEL
120 VAC, 60 HZ, 1 PHAS
PDB2
worldwide market. The high voltage configuration for a heat
pump module is listed on each module's name plate. The
heat pump is designed to operate with high voltage power
supplied to the unit at all times. See
2A FU4 3A FU5 3A FU6
MS2
HTR4A
INPUT: 200-500VAC
1.9A
HTR4
250 VA 24V DC
XF1
PWS1
480/24 VAC POWER SUPPLY
OUTPUT: 24VDC
10A
REFRIG COMP M2
460V
TO 24V AC TO 24V DC
93VA
DEVICES DEVICES
HTC
X WATTS
HEAT
TAPE
Figure 24, p. 62
10A FU7 10A FU8
M3A M4A
M3 M4
VM1
3-PH
FB1 FB1
PHASE
FAN #1 FAN #2
MONITOR
EC AXIAL FAN EC AXIAL FAN
400 - 480 VAC
*PRIMARY
460V, 3PH, 60 Hz 460V, 3PH, 60 Hz
MODULE
5.0 FLA 5.0 FLA
ONLY*
1195 RPM 1195 RPM
ARTC-SVX006A-EN