135
PB
INSTALLATION
Leak Check, Evacuation, and Charging (Triple Evacuation)
Friedrich requires all installations are Leak Checked and Evacuated in accordance to the “triple evacuation” process. This process
promotes a dry tight refrigeration system before opening the service valves. It recommended that a single port refrigeration
manifold and hoses rated over 31.5psi be used. Refrigeration hose valves, along with a vacuum pump and micron gauge, must be
used to ensure the system can be vacuumed and held under 500 microns. Check all equipment and hoses for proper usage and
leaks before beginning.
1. 1st Nitrogen Pressure Test:
Ensure all refrigeration connections are properly flared, secured, and torqued to their respective settings. Pressurize
the system with nitrogen to 550psi. Soap all connections with an approved refrigerant leak detection solution. The
pressure in the system must hold for one hour respective to the environmental conditions and should not vary less
than 540psi. If pressure can not be adequate held, check integrity of flares and torque specifications. Once pressure
is held adequately, purge the nitrogen charge to system pressure of 5‑10psi. DO NOT RETURN TO ATMOSPHERIC
PRESSURE.
2. 1st Vacuum Micron Test:
Connect hoses and vacuum pump to the outdoor unit as shown in Fig.28. Start the vacuum pump and vacuum to 1000
microns. Close the valve to the vacuum pump and check for micron rise for 15 minutes. If microns rise to near atmo
spheric pressure, there is a potential leak; follow Section 8.7.A. If microns rise over 5000, the system is very wet and
will require further nitrogen purges.
3. 2nd Nitrogen Break:
Once the system holds below 5000 microns, reconnect the nitrogen tank break the system vacuum with 30‑50psi of
nitrogen. Wait 5 minutes, then purge to 5‑10psi. DO NOT RETURN TO ATMOSPHERIC PRESSURE.
4. 2nd Vacuum Micron Test:
Reconnect vacuum pump and gauge and begin evacuation. Vacuum system to 500 microns. Close vacuum valve and check
for micron rise. Vacuum should hold under 1000 microns. Repeat 8.7.C and 8.7.D until achieved.
5. 3rd Nitrogen Break:
Once the system holds below 1000 microns, reconnect the nitrogen tank break the system vacuum with 30‑50psi of
nitrogen. Wait 5 minutes, then purge to 5‑10psi. DO NOT RETURN TO ATMOSPHERIC PRESSURE.
6. 3rd Final Vacuum Micron Test:
Reconnect vacuum pump and gauge and begin evacuation. Vacuum system to 300 microns. Close vacuum valve and check
for micron rise. Vacuum should hold under 500 microns. Repeat 8.7.C and 8.7.D until achieved. Once held under 500
microns, the system is considered dry and tight.
7. Charging the system:
Unscrew Service Valve Caps to expose the inner hexagon head. Use an allen‑head spanner or service wrench with
appropriate adapter to release the refrigerant into the system. If the calculated line set length is over 24.9ft, weight
in the additional charge with an approved refrigerant scale as needed (Fig.28B).
Содержание FPCG0912
Страница 9: ...9 INTRODUCTION Product Appearance Cassette type Model Btu h Indoor Unit Out door Unit 24K 36K...
Страница 119: ...119 OPERATION Figure 301 Remote Control Operation and Function...
Страница 132: ...132 INSTALLATION Outdoor Units Fig 432 Fig 433...
Страница 140: ...140 MAINTENANCE...
Страница 163: ...163 COMPONENTS TESTING Fan Motor Fig 605...
Страница 200: ...200 WIRINGDIAGRAMS 7k Wall Units...
Страница 203: ...203 WIRING DIAGRAMS 24k Outdoor Units Electric wiring diagram 1993419 E...
Страница 204: ...204 WIRING DIAGRAMS 36k Outdoor Units...
Страница 205: ...205 PARTSCATALOG 18K Outdoor Condensor...
Страница 206: ...206 PARTSCATALOG 18K Outdoor Condensor...
Страница 207: ...207 PARTSCATALOG 18K Outdoor Condensor...
Страница 210: ...210 PARTSCATALOG 24K Outdoor Condensor Figure 901A 4 C 4x12...
Страница 211: ...211 PARTS CATALOG 24K Outdoor Condensor Figure 901B 1 1 1 I I i I I _ ____ I L i...
Страница 212: ...212 PARTS CATALOG 24K Outdoor Condensor Figure 901C II c tx12 II...
Страница 215: ...215 PARTS CATALOG 36K Outdoor Condensor Figure 902A 11 I i i r I h 1 1 I I _ I 11 12 11 I I I Ii I 1 I Ii L l_ ii I _...
Страница 216: ...216 PARTS CATALOG 36K Outdoor Condensor Figure 902B i...
Страница 217: ...217 PARTS CATALOG 36K Outdoor Condensor Figure 902C u...
Страница 222: ...222 PARTS CATALOG 9K 12K Indoor Cassette Figure 904 B M4x08...
Страница 226: ...226 PARTS CATALOG 24K INDOOR CASSETTE FIgure 906 0 1 A 4X8 13 19 NOTE I I r 1 I I iA 4X12 t I 9 5X53 11 4 _ _ A 4X10...
Страница 228: ...228 PARTS CATALOG 9K 12K DUCTED INDOOR Figure 907a...
Страница 229: ...229 Figure 907b PARTS CATALOG 9K 12K DUCTED INDOOR...
Страница 230: ...230 Figure 907c PARTS CATALOG 9K 12K DUCTED INDOOR...
Страница 232: ...232 PARTS CATALOG 18K Ducted Indoor Figure 908a...
Страница 233: ...233 PARTS CATALOG 18K Ducted Indoor Figure 908b...
Страница 234: ...234 PARTS CATALOG 18K Ducted Indoor Figure 908c...
Страница 236: ...236 PARTS CATALOG 24k Ducted Indoor Figure 909a _ _ _ 1...
Страница 237: ...237 PARTS CATALOG 24k Ducted Indoor Figure 909b _ _ __lllfllllllllllalll l rla _ fllll _ 2...
Страница 238: ...238 PARTS CATALOG 24k Ducted Indoor Figure 909c A __ _ _ C llillllp_ ___ 111 11111111111A11 _ lffllllllal 3...