Friedrich H)A09K25 - Manuals

5 VE A/VHA9K-24K VEA09K VEA12K VEA18K VEA24K VHA09K VHA12K VHA18K VHA24K C O O L I N G D A T A Cooling Btu/h 9500/9300 11800/11500 18000/17800 24000 9500/9300 11800/11500 18000/17800 23500 Cooling Power (W) 880 1093 2070 2526 905 1124 2070 2474 EER 10.8 10.8 8.7 9.5 10.5 10.5 8.7 9.5 Sensible Heat R...

6 Model V(E,H)A09 V(E,H)A12 V(E,H)A18 V(E,H)A24 Voltage (V) 230 / 208 230 / 208 230 / 208 230 / 208 Refrigerant R-22 R-22 R-22 R-22 Chassis Width 23.125" 23.125" 23.125" 23.125" Chassis Depth 23.125" 23.125" 23.125" 23.125" Chassis Height ** 32.25" 32.25" 32.2...

7 * Height includes 2" high duct collar and 5/8" isolators under unit. **Normal Value Dry Coil on High Speed @ .3" ESP. MODELS V(E,H)A09 K25 V(E,H)A09 K34 V(E,H)A09 K50 V(E,H)A12 K25 V(E,H)A12 K34 V(E,H)A12 K50 V(E,H)A18 K25 V(E,H)A18 K34 V(E,H)A18 K50 Cooling Cap. (Btu/h) 9500/9300 9500...

8 A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more diffi cult and time consuming, if not (in some cases) entirely impossible. The refriger...

9 Electrical Rating Tables NOTE: Use copper conductors ONLY Wire sizes are per NEC . Check local codes for overseas applications Recommended branch circuit wire sizes* Nameplate maximum circuit breaker size AWG Wire size** 15A 14 20A 12 30A 10 AWG — American Wire Gauge * Single circuit from main box...

10 Heat Anticipators Heat anticipators are small resistance heaters (wired i n s e r i e s w i t h t h e " W " c i r c u i t ) a n d b u i l t i n t o m o s t electromechanical thermostats. Their purpose is to prevent wide swings in room temperature during system operation in the HEATING mod...

11 Typical Electrical & Thermostat Wiring Diagrams VEA/VHA 24K L1 L2 QUICK DISCONNECT HERM BLUE YELLOW GREEN WHITE RED CAPACITOR BROWN GREEN BROWN COMP WIRE HARNESS COMPRESSOR RED BLUE BLACK RED FAN c BLACK BLUE WHITE TRANSFORMER WHITE BLACK BLACK COIL, SOLENOID WIRE NUT (RED) SEE NOTE #4 CAPACI...

16 Ductwork Preparation Pull the fl ex duct tight. Extra fl ex duct slack can greatly increase static pressure Explanation of charts Chart A is the nominal dry coil VERT-I-PAK CFMs. Chart B is the correction factors beyond nominal conditions. Refrigerant Charging Note: Because the earlier model Vert-I...

19 All units are equipped with capillary tube metering devices. Checking for restricted capillary tubes. 1. Connect pressure gauges to unit. 2. Start the unit in the cooling mode. If after a few minutes of operation the pressures are normal, the check valve and the cooling capillary are not restrict...

20 Touch Test in Heating/Cooling Cycle The only defi nite indications that the slide is in the mid-po-sition is if all three tubes on the suction side of the valve are hot after a few minutes of running time. NOTE: A condition other than those illustrated above, and on page 19, indicate that the reve...

21 WARNING DANGER OF BODILY INJURY OR DEATH FROM ELECTRICAL SHOCK When working on high voltage equipment - turn the electrical power off before attaching test leads. Use test leads with alligator type clips - clip to terminals, turn power on, take reading - turn power off before removing leads. Comp...

22 Single Phase Resistance Test Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). Touch the leads of the ohmmeter from terminals common to start ("C" to "S"). Next, touch the leads of the ohmmeter from terminals common to run ("C"...

23 From the supply line on a typical 230 volt circuit, a 115 volt potential exists from the "R" terminal to ground through a possible short in the capacitor. However, from the "S" or start terminal, a much higher potential, possibly as high as 400 volts, exists because of the counter...

24 Emergency Heat Switch (Defrost Thermostat) Continuity Check Electric Heat Switch Operation (Heat Pumps Only) The electric heat switch is a dual function control and is shown on the wiring diagram as a defrost thermostat. It may be adjusted using a screwdriver. As the control s h a f t i s r o t a...

25 VEA09K00 RTA ................... 80004910 ................... 28 VEA09K00RTB ................. 80004910 ................... 28 VEA09K00RTE ................. 80004910 ................... 28 VEA09K00RTG ................. 80004922 ...................34 VEA09K00RTH ................. 80004922 ...........

39 9-18 ELECTRICAL TROUBLESHOOTING CHART — COOLING Line Voltage available at fan speed switch (on models so equipped) NO COOLING Insure that Fuses are good and/or that Circuit Breakers are On Compressor and Fan Motor should now operate See Refrigerant Circuit diagnosis if unit still is not cooling p...

40 2-TON ELECTRICAL TROUBLESHOOTING CHART — Cooling Line Voltage available at fan speed switch (on models so equipped) NO COOLING Insure that Fuses are good and/or that Circuit Breakers are On Compressor outdoor fan motor and indoor blower should now operate See Refrigerant Circuit diagnosis if unit...

41 REFRIGERANT SYSTEM DIAGNOSIS COOLING TROUBLESHOOTING CHART — COOLING TROUBLESHOOTING CHART — HEATING REFRIGERANT SYSTEM DIAGNOSIS HEATING Low Suction Pressure High Suction Pressure Low Head Pressure High Head Pressure Low Load Conditions High Load Conditions Low Load Conditions High Load Conditio...

42 Replace Reversing Valve NO NO YES YES ELECTRICAL TROUBLESHOOTING CHART HEAT PUMP Reversing Valve Stuck YES Replace Solenoid Coil Is the Solenoid Coil Good? Is Line Voltage Present at Solenoid Valve? Is Selector Switch set for Heat? SYSTEM COOLS WHEN HEATING IS DESIRED. HEAT PUMP

VPSERVMN (4-05) Use Factory Certifi ed Parts. FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-15404200 N. Pan Am Expressway · San Antonio, Texas 78218-5212(210) 357-4400 · FAX (210) 357-4480www.friedrich.com Printed in the U.S.A.