Reference - Toshiba MMU-AP0072H2UL Engineering Data Book

6
Indoor unit

11. Reference

11-1 Fresh Air Intake
MMD-AP0074SPH2UL, AP0094SPH2UL, AP0124SPH2UL
Caution
The fresh air shall be conditioned by heat reclaim ventilator or similar.
Ensure the fresh air flow rate is determined so that mixed suction air and fresh air maintain the
operating temperature .
*1 Recommended conditioned air temperature is 53.6 °F to 86 °F.
However, make a fresh air flow rate within 20 % of standard.
Model name
MMD-AP0074SPH2UL
MMD-AP0094SPH2UL
MMD-AP0124SPH2UL
Install a air filter within the fresh air duct. (Fresh air does not pass through the filter of Indoor unit.)
Insulate the fresh air duct.
Electrically connect the fan of the Heat exchanger unit and the Indoor unit to a single isolator.
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
0
Indoor unit
Inter - lock circuit
Connect the driving relay of the duct fan (DC 12V) between 1 and 6 on the indoor P.C. board.
(Rated current of the relay for duct fan should be up to 75 mA.)
After installation, carry out a test run to check that the duct fan of the indoor unit start/stop
simultaneously.
(Carry out the test run following the installation manual of the indoor unit.)
Standard air flow (cfm)
318
318
353
10 20 30
Fresh air flow (cfm)
Flange option: TCB-F101URLU
40 50 60
Duct fan
motor
209
70 80 90
Fresh air