Page 2 - INTRODUCTION; diagnose and repair any malfunctions of this product.; IMPORTANT; FRIEDRICH AIR CONDITIONING CO.
TECHNICAL SUPPORT CONTACT INFORMATION INTRODUCTION This service manual is designed to be used in conjunction with the installation manuals provided with each unit. This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any mal...
Page 3 - Table of Contents
1 Table of Contents 2-4 4 5 5 678 9-10 11 12 12-13 14 15 16 16 17-18 19 20 2121 22 22-23 2323 Important Safety Information ...........................................Introduction ......................................................................... Vert-I-Pak Model Number Identification Guide .....
Page 4 - IMPORTANT SAFETY INFORMATION; PERSONAL INJURY OR DEATH HAZARDS; Always work in the company of a qualified assistant if possible.; Your safety and the safety of others are very important.; word “NOTICE”. Potential property damage can occur if instructions; WARNING; NOTICE
IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product...
Page 5 - Never operate the A/C unit with wet hands.; REFRIGERATION SYSTEM HAZARDS:; Have a fire extinguisher at hand while using a torch.
Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, • and sleeve on the room side of the air conditioning unit while cleaning. Electrical component malfunction caused by water could result in electric shock or other electrically • unsafe conditi...
Page 6 - PROPERTY DAMAGE HAZARDS; Connect to a properly grounded outlet only.; WATER DAMAGE HAZARDS:; Safety Warnings
4 PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS: Read the Installation/Operation Manual for this air conditioning unit prior to operating. • Use air conditioner on a single dedicated circuit within the specified amperage rating. • Connect to a properly grounded outlet only. • Do not remove ground pron...
Page 7 - Model Identi; PRODUCT LINE; VPAK Serial Number Identification Guide; SERIAL NUMBER
ELECTRIC HEATER SIZE A-Series 00 = No electric heat 25 = 2.5 KW 34 = 3.4 KW 50 = 5.0 KW 75 = 7.5 KW 10 = 10 KW NOMINAL CAPACITY A-Series (Btu/h) 09 = 9,000 12 = 12,000 18 = 18,000 24 = 24,000 EN GI NEER ING CODE OPTIONS RT = Stan dard Re mote Op er a tion SP = Sea coast Pro tect ed VOLTAGE K = 208/2...
Page 8 - Chassis Specifications
6 Chassis Specifications Model 2010 VEA09K VEA12K VEA18K VEA24K VHA09K VHA12K VHA18K VHA24K COOLING DATA COOLING BTUh 9400/9000 11500/11200 17000/16500 23000/22700 9200/9000 11500/11200 17000/16800 23000/22800 POWER (W) 959 1173 1888 2421 939 1186 1868 2527 1 . 9 / 1 . 9 1 . 9 / 1 . 9 7 . 9 / 7 . 9 ...
Page 9 - Extended Cooling Performance
7 Extended Cooling Performance V EA - EXTENDED COOLING PERFORMANC E 72 67 62 72 67 62 72 67 62 72 67 62 72 67 62 BTUh 11054 10631 9842 10528 9926 9156 10114 9400 8319 9475 8413 7417 8954 7835 6914 WATTS 783 795 804 853 861 872 959 959 959 1037 1036 1039 1084 1083 1087 AMPS 3.5 3.5 3.5 3.7 3.8 3.8 4....
Page 10 - ELECTRICAL REQUIREMENTS; Sample Nameplate; SAMP; Electrical Rating Tables; Supply voltage; ELECTRIC SHOCK HAZARD
8 ELECTRICAL REQUIREMENTS Wire Size Unit MUST Sample Nameplate 120524 COOLING EQUIPMENT FOLLOWING ITEMS OUTDOOR GRILLE INDOOR GRILLE SAMP LE Electrical Rating Tables 4 1 A 5 1 2 1 A 0 2 0 1 A 0 3 All units must be hard wired with properly sized breaker. See nameplate for specific chassis electrical ...
Page 11 - Remote Thermostat; Manual Changeover Thermostat; Thermostat Location
9 ReMOTe TheRMOsTAT AND LOw VOLTAge CONTROL CONNeCTIONs Remote Thermostat To control the unit with a wall-mounted thermostat: 1) Pull the disconnect switch. 2) Unscrew and remove the control box panel. 3) After selecting which side you want to run your thermostat wire through, run the wires through ...
Page 12 - ReMOTe TheRMOsTAT AND LOw VOLTAge CONTROL; Desk Control Terminals; Maximum Wire Length for Desk Control Switch; control system and; Thermostat Connections
10 ReMOTe TheRMOsTAT AND LOw VOLTAge CONTROL CONNeCTIONs (Continued) Desk Control Terminals The Friedrich VERT-I-PAK has built-in provisions for connection to an external switch to control power to the unit. The switch can be a central desk control system or even a normally open door switch. For des...
Page 13 - eLeCTRONIC CONTROL BOARD FeATURes; Program; Thermostat; System
11 eLeCTRONIC CONTROL BOARD FeATURes The new Friedrich Vert-I-Pak has state of the art features to improve guest comfort and conserve energy. Through the use of specifically designed control software, Friedrich has accomplished what other Manufacturer’s have only attempted – a quiet, dependable, aff...
Page 14 - Electronic Control Con; ▲ and
12 Low fan High fan Fan only Power Temp Temp Cool Heat 1 2 3 4 5 6 7 8 O N Electronic Control Con fi guration The adjustable control dip switches are located at the lower left hand portion of the digital Smart Center. The inputs are only visible and accessible with the front cover removed from the Un...
Page 15 - electronic Control error Code Diagnostics; Diagnostics; To access the error code menu press the; ‘Heat’; and; ‘High Fan’; buttons simultaneously for three seconds. If; ‘Low Fan’; Test Mode; ‘Cool’
13 electronic Control error Code Diagnostics Error Code e s u a C e l b i s s o P ti n U y B n e k a T n o it c A n o it a l s n a r T e d o C y ll a m r o N g n it a r e p O t i n U e n o N e e r F r o rr E F E 02 Extreme low voltage condition exists (<198V for 230V units and <239V for 265V u...
Page 16 - VPAk eLeCTRONIC CONTROL FeATURes; Thermostat Compatibility:
14 VPAk eLeCTRONIC CONTROL FeATURes Thermostat Compatibility: The VPAK Electronic Control is compatible with Friedrich RT4 and RT5 Thermostats. The VPAK Electronic control is also compatible with most standard Single Stage Heat/Cool Thermostats. NOTE: Field supplied Thermostats MUST energize the fan...
Page 17 - Determining the Indoor CFM: Chart A – CFM
EXAMPLE: Air fl ow requirements are calculated as follows: (Having a wet coil creates additional resistance to air fl ow. This addit ional resistance must be taken into consideration to obtain accurate air fl ow information. External Static Pressure External Static Pressure can best be de fi ned as the ...
Page 18 - Chart B – Correction Multipli; ers
The Vert-I-Pak A series units must be installed with a free return air configuration. The table below lists the indoor airflow at corresponding static pressures. All units are rarted at low speed.The Vert-I-Pak units are designed for either single speed or two fan speed operation. For single speed o...
Page 19 - BLOWER / FAN MOTOR TEST; CAPACITORs; Capacitor Check with Capacitor Analyzer; COMPONeNTs TesTINg
BLOWER / FAN MOTOR TEST BLOWER / FAN MOTOR A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A self-resetting overload is located inside the motor to protect against high temperature and high amperage conditions. ELECTRIC SHOCK HAZARD WARNING Di...
Page 21 - ReFRIgeRATION seQUeNCe OF OPeRATION; Evaporator Coil Assembly; Refrigeration Assembly
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 difficult and time consuming, if not (in some cases) entirely impossible. The refrigerat...
Page 22 - seRVICe; CAUTION; Servicing / Chassis Quick Changeouts; To Remove the Chassis from the Closet:; C. Pull the Power Disconnect located in the front of the chassis.
seRVICe CUT/SEVER HAZARD CAUTION Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to do so could result in minor to moderate injury. ELECTRIC SHOCK HAZARD WARNING Turn off electric power before service or installation. Extreme care must be used, if it be...
Page 23 - Refrigerant Charging; RISK OF ELECTRIC SHOCK; seALeD ReFRIgeRATION sYsTeM RePAIRs; Accurate refrigerant charge measuring device such; EQUIPMENT MUST BE CAPABLE OF; system simultaneously.
Refrigerant Charging Proper refrigerant charge is essential to proper unit opera - tion. Operating a unit with an improper refrigerant charge will result in reduced performance (capacity) and/or efficiency. Accordingly, the use of proper charging methods during ser - vicing will insure that the unit...
Page 24 - BURN HAZARD; Method Of Charging / Repairs; HIGH PRESSURE HAZARD; Undercharged Refrigerant systems; Whenever you service a unit with an undercharge of
3. Install a process tube to sealed system. 4. Make necessary repairs to system. 5. Evacuate system to 200 microns or less. 6. Weigh in refrigerant with the property quantity of R-410A refrigerant. 7. Start unit, and verify performance. 8. Crimp the process tube and solder the end shut. Proper safet...
Page 26 - MeTeRINg DeVICe; Capillary Tube systems; heRMeTIC COMPONeNTs CheCk; CheCk VALVe; CHECK VALVE OPERATION
MeTeRINg DeVICe Capillary Tube systems 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 th...
Page 27 - ReVeRsINg VALVe DesCRIPTION/OPeRATION; TesTINg The COIL; CheCkINg The ReVeRsINg VALVe
25 NOTE: System operating pressures must be near normal before valve can shift . ReVeRsINg VALVe DesCRIPTION/OPeRATION The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils. It consists of a pressure- operated, main valve and a pilot valve actuated by a solen...
Page 28 - Procedure For Changing Reversing Valve; FIRE HAZARD; Touch Test in heating/Cooling Cycle
26 Reversing Valve in Heating Mode When sluggish or stuck in the mid-position, part of the discharge gas from the compressor is directed back to the suction side, resulting in excessively high suction pressure. Should the valve fail to shift from coooling to heating, block the air flow through the o...
Page 29 - EXPLOSION HAZARD; single Phase Connections; COMPRessOR CheCks; Checking the Overload
27 8. Pressurize sealed system with a combination of R-22 and nitrogen and check for leaks, using a suitable leak detector. Recover refrigerant per EPA guidelines. 9. Once the sealed system is leak free, install solenoid coil on new valve and charge the sealed system by weighing in the proper amount...
Page 30 - single Phase Resistance Test; GROUND TEST; Failure to follow this warning could result; Internal Overload VPAk 24 k Btus
28 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” to “R”). single Phase Resistance Test Add values “C...
Page 31 - PROPER HANDLING OF; COMPRessOR RePLACeMeNT; HIGH TEMPERATURES; FREEZE HAZARD; NEVER
29 Recommended procedure for compressor replacement 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. 2. Recover all refrigerant from the system though the process tubes. PROPER HANDLING OF RECOVERED REFRIGERAN...
Page 32 - SPECIAL PROCEDURE IN THE CASE OF MOTOR; ROUTINe MAINTeNANCe; ELECTRICAL SHOCK HAZARD!
30 1. 2. 3. 4. 5. ELECTRIC SHOCK HAZARD WARNING Turn off electric power before service or installation. Failure to do so may result in personal injury, or death. Sealed Refrigeration System contains refrigerant and oil under high pressure. Proper safety procedures must be followed, and proper protec...
Page 33 - eLeCTRICAL TROUBLeshOOTINg ChART - COOLINg; NO COOLING OPERATION
eLeCTRICAL TROUBLeshOOTINg ChART - COOLINg 9k BTU, 12k BTU, & 18k BTU NO COOLING OPERATION Insure that Fuses are good and/or that Circuit Breakers are on and voltage is 208/230 Compressor and Fan Motor should now operate See Refrigerant Circuit diagnosis if unit still is not cooling properly Fan...
Page 35 - YES; HEAT PUMP MODE
eLeCTRICAL TROUBLeshOOTINg ChART heAT PUMP Replace Reversing Valve NO NO YES YES 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 MODE 33
Page 36 - TROUBLeshOOTINg ChART - COOLINg
REFRIGERANT SYSTEM DIAGNOSIS COOLING REFRIGERANT SYSTEM DIAGNOSIS HEATING Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across Indoor Coil Indoor Coil Restriction Outdoor Coil Refrigerant Sys...
Page 43 - TECHNICAL SERVICE DATA; TeChNICAL seRVICe DATA
TECHNICAL SERVICE DATA VEA09K**RTL 230/208 4.2 58 22 118 156 66 9 24 151 389 33.5 VEA12K**RTL 230/208 5.2 57 23 116 158 59 12 17 141 396 32.0 VEA18K**RTL 230/208 8.1 55 25 127 180 60 12 28 135 455 48.0 VEA24K**RTL 230/208 10.0 55 25 125 170 61 10 34 135 440 65.0 VHA09K**RTL 230/208 4.1 57 23 117 155...
