Wiring Design; General; Outdoor Unit Power Supply - Toshiba MMU-AP0072H2UL Engineering Data Book

4

Wiring Design

4 Wiring Design

4-1. General

• The equipment shall be installed in compliance with NEC and local codes.
• Do not connect high voltage power wires to the control terminal blocks (U1, U2, U3, U4, U5, U6).
• All field wiring insulation rating must comply with NEC and local codes.
• All wiring must be strained relieved as specified by NEC and local codes.
• Do not energize the indoor units until leak check and vacuuming are completed.
• Use copper supply wire.
• Use UL wires rated 600 V for the system interconnection wires.
• Use UL wires rated 300 V for remote control wires.

4-2. Outdoor unit power supply

Main power circuit Disconnect per NEC
breaker and local codes.
4-2-1. Heat recovery
Outdoor unit data
208/230 V model
Unit Capacity Model name
type type MMY-
MAP0724FT9U 3 ~ 60 Hz 208/230 V
72
MAP0964FT9U 3 ~ 60 Hz 208/230 V
96
MAP1204FT9U 3 ~ 60 Hz 208/230 V
120
144 AP1444FT9UL 3 ~ 60 Hz 208/230 V
168 AP1684FT9UL 3 ~ 60 Hz 208/230 V
192 AP1924FT9UL 3 ~ 60 Hz 208/230 V
216 AP2164FT9UL 3 ~ 60 Hz 208/230 V
240 AP2404FT9UL 3 ~ 60 Hz 208/230 V
288 AP2884FT9UL 3 ~ 60 Hz 208/230 V
312 AP3124FT9UL 3 ~ 60 Hz 208/230 V
336 AP3364FT9UL 3 ~ 60 Hz 208/230 V
L L L L L L
1 2 3 1 2 3
Power supply Voltage Range
Min.
Phase and Rated
frequency voltage
(V)
187
187
187
187
187
187
187
187
187
187
187
Every outdoor unit must have a dedicated power supply.
Power supply for
outdoor units
Compressor
Max. Unit No.1 Unit No.2 Unit No.3
(V) (kW) (kW)
253 2.3 2 –
×
253 2.1 3 –
×
253 2.7 3 –
×
253 2.3 2 2.3 2
× ×
253 2.1 3 2.3 2
× ×
253 2.1 3 2.1 3
× ×
253 2.7 3 2.1 3
× ×
253 2.7 3 2.7 3
× ×
253 2.1 3 2.1 3 2.1
× ×
235 2.7 3 2.1 3 2.1
× ×
235 2.7 3 2.7 3 2.1
× ×
29
Incorrect
Fan Motor MCA
(kW) (kW) (A)
– 1.0 34
– 1.0 50
– 1.0 52
– 1.0 2 34 + 34
×
– 1.0 2 50 + 34
×
– 1.0 2 50 + 50
×
– 1.0 2 52 + 50
×
– 1.0 2 52 + 52
×
3 1.0 3 50 + 50 + 50 60 + 60 + 60
× ×
3 1.0 3 52 + 50 + 50 60 + 60 + 60
× ×
3 1.0 3 52 + 52 + 50 60 + 60 + 60
× ×
MOCP
(A)
40
60
60
40 + 40
60 + 40
60 + 60
60 + 60
60 + 60