Friedrich OHS Series Installation & Operation Manual
Oes/ ohs series wall-mount outdoorwall-mounted air conditioners / heat pumps
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- Specification (2 pages) ,
- Installation & operation manual (24 pages)
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Summary of Contents for Friedrich OHS Series
- Page 1 Wall-Mount Outdoor Wall-mounted Air Conditioners / Heat Pumps OES/ OHSSeries Installation & Operation Manual 920-138-02 (3-04)
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Page 2: Table Of Contents
920-138-02 (3-04) TABLE OF CONTENTS I. General Specifications Model Number Identification Guide ............. Unit Dimensions ................II. Installation Introduction ................Safety Considerations ................ Indoor Air Requirements ..............Filters ..................Outdoor Air System ................Condensate Drainage ................ Mounting Preparations ............... Mounting the Unit ................. Rain Flashing Installation .............. -
Page 3: Model Number Identification Guide
920-138-02 (3-04) I. GENERAL SPECIFICATIONS Figure 1 BASIC MODEL CONFIGURATION OPTIONS Family Engineering Revision Digit O = Friedrich Wall-Mount Future Revision Digit System Type E = Cooling with or without electric heat Ventilation Options H = Heat Pump X = Manual... -
Page 4: Ii. Installation
920-138-02 (3-04) (1) disconnect switch. Turn off auxiliary heater power if applicable. Electrical shock can cause personal injury or death. _1, DANGER: Before installing or servicing system, always turn off main power to system. There may be more than one II. -
Page 5: Indoor Air Requirements
920-138-02 (3-04) Installer Qualifications Service Clearance Unit Location A minimum of 30 in. service clearance must be allowed in front This equipment is intended to be installed by a qualified HVAC of the unit, and a minimum of 20 in. on either side. Additional specialist who is experienced and thoroughly knowledgable in air conditioning unit installation and operation, high voltage clearance may be necessary. -
Page 6: Filters
500 FPM for return air grilles, and 400 FPM for filter to ensure that the intake and discharge air do not recirculate grilles. It is recommended that the proper Friedrich return air (also called short-circuit). grille kit be installed in applications where no return duct is used. -
Page 7: Mounting Preparations
920-138-02 (3-04) MOUNTING PREPARATIONS Figure 4 Forming the Duct Flanges Duct Flanges as Shipped To minimize the possibility of shipping damage, all units are shipped with field formed duct flanges. These flanges must all be formed into place prior to mounting the unit. The perforated bend lines of the duct flanges provide... -
Page 8: Mounting The Unit
(See Figures 6 and 7). mounted in two ways to ensure the bracket holes are in line Friedrich recommends a 1 inch clearance to combustible with the studs. (See Figure 6) material for the first 3 feet of duct attached to the outlet air frame. - Page 9 920-138-02 (3-04) Figure 7 Wall Mounting Instructions Factory supplied rain IIII flashing. Mount on unit before Wall Structure installing =:=====_ SUPPLY AIR OPENING _ Supply Air Duct RETURN AIR Return Air OPENING Opening • o • • • • Bottom mounting Concrete Block Wall Wood Frame Wall bracket.
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Page 10: Rain Flashing Installation
920-138-02 (3-04) Rain Flashing Installation Figure 9 Seal both sides of the rain flashing with a bead of silicone caulking along its entire length. Mounting Screws Rain Flashing (Supplied) Front of unit Mounting Face Duct Opening in Wall ,,---- Wall Structure Foam air seal SUPPLY AIR Duct Flange... -
Page 11: Thermostat Wiring
920-138-02 (3-04) THERMOSTAT WIRING Attach thermostat wires to low-voltage terminal block on left side of control box in locations indicated in Figure 3. Figure 10 - Thermostat Wiring E c I Unit Terminal Compressor J Auxiliary J Heat I Common Valve Heat Reversing I... -
Page 12: Electrical Data Tables
920-138-02 (3-04) Table 3 - Electrical Data Air Conditioners MultipleCircuits Single Circuit HACR Wire Groung HACR/ Max WireSize GroungWire / Max Size Wire Factory Voltage/ Hz Voltage Circuit BreakerSize (field) Size (field) Breaker (field) Size / Ph Range Breakers Size (field) Ckt 1 Ckt 2... - Page 13 920-138-02 (3-04) Table 4 - Electrical Data Heat Pumps MultipleCircuits SingleCircuit HACR Wire Groung HACR/ Max Wire Size GroungWire / Max Size Wire Factory Voltage/Hz Voltage Circuit BreakerSize (field) Size (field) Breaker (field) Size Range Breakers Size (field) Cktl Ckt2 Ckt 1 Ckt2 Ckt 1...
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Page 14: Standard Ventilation Package
920-138-02 (3-04) STANDARD VENTILATION PACKAGE Manual Fresh Damper (XX) General Description Figure 11 During blower operation, the damper allows up to 15% outside air of the total airflow rating. The damper is field adjustable and provides no pressure relief. Operation The damper has three fixed positions. -
Page 15: Optional Ventilation Packages
920-138-02 (3-04) OPTIONAL VENTILATION PACKAGES The following ventilation packages are optional equipment installed at the factory. Consult your dealer or distributor for chassis option details. Commercial Room Ventilator General Description CRV Position adjustment (1 ½ - 5 Ton Chassis) The CRV has a built in exhaust system, which provides pressure 1) Remove upper left side panel of unit.* relief. - Page 16 920-138-02 (3-04) Economizer (XE) Figure 14 General Descrption The economizer provides free cooling when outside conditions Factory Installed Economizer Components are cool and dry enough to satisfy cooling requirements and it is not necessary for the compressor to run. Between 0% s-Sensor and 100% outside air can be introduced.
- Page 17 920-138-02 (3-04) Table 7 - Enthaply Set Points Outdoor Temperature (°F) >90% >90% >90% <10% >90% >90% Enthalpy Setting <10% >90% >90% <10% <10% >90% * The economizer control makes the decision to economize at outdoor temperatures and enthalpy settings shown above. At %RH above the setting, the econo- mizer will not open.
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Page 18: Start Up
920-138-02 (3-04) III. START (OHS only) mode as follows: Set fan control to ON. If fan runs, return SEQUENCE OF OPERATION control to AUTO setting. This verifies fan is COOLING - Any call for cooling from the thermostat completes working properly. the R-Y circuit which activates the compressor contactor, Set system control from OFF to COOL. -
Page 19: Model Information Form
920-138-02 (3-04) FOR THE RECORD Record the model and serial number of your Wall-Mount and complete the information in the spaces provided below. This information will be necessary should the equipment ever require service or repair. SERVICE INFORMATION WALL-MOUNT MODEL #: WALL-MOUNT SERIAL #: IF WALL-MOUNT WAS PURCHASED INSTALLED IN A MANUFACTURED... -
Page 20: Warranty Information
3. TO OBTAIN SERVICE and/or warranty parts replacement, please contact the dealer or contractor who installed or has been servicing the equipment within the applicable warranty period. If your dealer or contractor needs assistance, the authorized FRIEDRICH distributor is available for consultation, and FRIEDRICH supports the efforts of the distributor. - Page 21 (I) year from the date of original installation, FRIEDRICH will repair or replace, at its option, any defective part without charge for the part.
- Page 22 920-138-02 (3-04)
- Page 23 920-138-02 (3-04)
- Page 24 FRiEDR[CH AIR CONDiTIONiNG CO. Post Office Box 1540 • San Antonio, Texas78295-1540 4200 N. Pan Am Expressway • San Antonio, Texas 78218-5212 (210) 357-4400 • FAX (210) 357-4480 www.friedrich.com Printed in the U.S.A. 92o-!38-o2(3-04)
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