Thermodynamic Heat Recovery - Service Manual - Lennox BAC 030 SNM 3M Installation, Operating And Maintenance Manual

THERMODYNAMIC HEAT RECOVERY - SERVICE MANUAL

1. REFRIGERATION CIRCUIT
Frigorifi c components access:
Compressor is located in the fi x condenser part. Its access for electrical checking and
pressure taps (HP and LP) is made through the screwed access door behind the hinged
coil.
4-way valve, thermostatic expansion valve, dryer, and sensors are located on the
e-Drive™ supply compartment.
Electrical components:
• For D and E-box, specifi c TRMO components are located in the electrical box.
• For C-box, specifi c TRMO components are located on the back of the electrical box, and can be accessible from the supply e-Drive™
compartment.
Circuit specifi cations:
TRMO
Compressors
Thermostatic expansion valves
Refrigerant load
2. COMMISSIONING
Electrical connections:
• All wire connections are factory made.
Starting up:
• CLIMATIC™ confi guration:
- Power the unit
- Check the confi guration of the CLIMATIC™ 60 with the DS60 in expert mode. See § Control Manual / Confi guration
• Flow rate settings:
Make sure that both supply and exhaust air fl ow are balanced. See section EBHO or ERVF. Balancing is correctly set if:
- with Test = 'B.Nom 100%': at 100% fresh air, set the exhaust Flow 3864 = supply fl ow 3333;
- then switch Test = 'B.Nom 0%':
1. reduce coeffi cient 3866 until the louvers are closed;
2. then if the fl ow (supply and exhaust) is far from the previous fl ow settings, set coeffi cient 3335;
3. fi nally, repeat step 1 and 2 to obtain a constant fl ow whatever the fresh air mode.
- same settings have to be realized for reduced fl ow - 3334 and 3865.
WARNING! During the settings, wait until the economizer is fully closed or opened, since it takes 1-2 minutes
to switch.
• Start the TRMO circuit (circuit 3): switch Test='C3--Cool'
- check the sense of rotation of the circuit 3 compressor;
- check frigorifi c values (HP, LP, overheating and subcooling).
• Repeat the last operations with Test='C3--Heat'
• 24 •
C-box D-box
ABA054 ARA073
TGEL10-6.5 TGEL10-9
2.5 kg 3.5 kg
BALTIC-IOM-0412-E / Installation manual
E-box
ARA081
TGEL10-9
4.5 kg