MORTEXPRODUCTSINC.501TERMINALRDFORTWORTH,TEXAS76106 Page1
INSTALLATION MANUAL
Horizontal Air Handler Models:
SEHX - DX Cooling w/ Electric Heat, Uncased SDXW - DX Cooling w/ Hot Water Heat, Uncased
CEHX – DX Cooling w/ Electric Heat, Cased CDXW – DX Cooling w/ Hot Water Heat, Cased
SCWE – Chilled Water Cooling w/Electric Heat, Uncased-2P SCWW – Chilled Water Cooling w/Hot Water Heat, Uncased-4P
CCWE – Chilled Water Cooling w/Electric Heat, Cased-2P CCWW – Chilled Water Cooling w/Hot Water Heat, Cased-4P
LIST OF SECTIONS
1 – General 1 7 – Hot Water and Chilled Water Tables 15
2 – Safety, Mounting, General, Dimensional & Nomenclature Info 2 8 – Line Voltage Wiring 24
3 – Clearance and Return Air Requirements 7 9 – Thermostat Wiring and Connections 27
4 – Air Handler and Supply Air Duct Installation 9 10 – Motor, Blower and Furnace Startup 32
5 – Air Handler Installation 10 11 – Final System Checkout 34
6 – Refrigerant Piping, TXV, Flowrator & Condensate Drain Info 10 12 – Wiring Diagrams 35
LIST OF FIGURES
1 – Cased Enclosure Mounting 3 21 – Separate TStat, Separate Air Handler and Cooling Units 28
2 – CEHX/CCWE Dimension Data DX Cool w/ or w/o Elect Heat 5 22 – Separate TStat & Trans.; Separate Air Handler and Cooling 28
3 – SEHX/SCWE Dimension Data Chill Water w/ or w/o Elect Heat 6 23 – Same TStat, Separate Trans, Separate Air Handler & Cool Units 28
4 – Clearance – Access for Service 8 24 – Same TStat, Same Trans, Separate Air Handler & Cooling Units 29
5 – Ceiling Access Panel 9 25 – Honeywell T9611Heat Pump Thermostat Connections 29
6 – Evaporator Below Condenser Piping 10 26 – White Rodgers Multistage Heat / Cool T’stat Connections 30
7 – The TXV Bulb Best Placement 11 27 – White Rodgers Multistage Heat / Cool / HP T’stat Connections 30
8 – TXV Sensing Bulb Location 12 28 – White Rodgers Heat / Cool Two Trans T’stat Connections 30
9 – Typical TXV Connections 13 29 – Blower Assembly 32
10 – Flowrator Distributor Assembly 13 30 – Blower Motor Retainer Clips 32
11 – Proper Mounting of the SHL Temperature Switch 14 31 – PSC Blower Assembly 32
12 – Proper Wiring of the SHL Temperature Switch 14 32 – Constant Torque Blower Assembly 33
13 – Diagram of the Heating Cycle of a Heat Pump SHL Switch Loc 14 33 – Constant Torque Motor Terminals 34
14 – Diagram of the Cooling Cycle of a Heat Pump SHL Switch Loc 14 34 – Wire Diagram 3kW-10kW Electric HT- PSC Motor 35
15 – Condensate Drain Pan 15 35 – Wire Diagram 3kW-10kW Electric HT- PSC Motor w/ Lockout 35
16 – Typical Condensate Trap 15 36 – Wire Diagram Hydronic Heat – PSC Motor – w/FS - No Pump 36
17 – Components and Water Connections 16 37 – Wire Diagram Hydronic Heat – PSC Motor – w/FS and Pump 36
18 – Component Locations – Electric Heat Control Box 26 38 – Wire Diagram 3kW-10kW Electric HT- C.T. Motor w/ Lockout 37
19 – Component Locations – No Heat Control Box 27 39 – Wire Diagram Electric Heat – C.T. Motor w/ FS – No Pump 37
20 – Component Locations – Hydronic Heat Control Box 27 40 – Wire Diagram Electric Heat – C.T. Motor w/ FS and Pump 38
LIST OF TABLES
1 – SEHX General Specifications 4 19 – SCWW/CCWW Chilled Water Capacity 4&5 Row Coil – C.T. 21
2 – CEHX General Specifications 4 20– SCWW/CCWW Hot Water Capacity 4&5 Row Coil PSC 22
3 – SCWE General Specifications 4 21 – SCWW/CCWW Hot Water Capacity 4&5 Row Coil – C.T. 23
4 – CCWE General Specifications 4 22 – SCWW/CCWW Hot Water Capacity 2 Row HW Coil - PSC 23
5 – SDXW General Specifications 4 23 – SCWW/CCWW Hot Water Capacity 2 Row HW Coil – C.T. 23
6 – CDXW General Specifications 4 22 – SDXW/CDXW Hot Water Capacity 2 Row HW Coil - PSC 24
7 – SCWW General Specifications 5 23 – SDXW/CDXW Hot Water Capacity 2 Row HW Coil – C.T. 24
8 – CCWW General Specifications 5 24 – Wiring Requirements 208/240 VAC Electric Heat 18-37 Models 25
9 – CEHX/CCWE/CDXW/CCWW Dimensional Data 5 25 – Wiring Requirements 120 VAC Hydronic Heat 18-37 Models 25
10 – SEHX/SCWE/SDXW/SCWW Dimensional Data 6 26 – Electric Heater Electrical Data 25
11 – SEHX/CEHX/SCWE/CCWE Model Nomenclature 7 27 – Electrical Data 26
12 – Clearance to Combustibles 8 28 – Low Voltage Wire Gauge and Maximum Lengths 27
13 – Optional Ceiling Access Panels 9 29 – White Rodgers Thermostat Terminal Designations 29
14 – SCWE/CCWE/ Chilled Water Capacity 4&5 Row Coil – PSC 16 30 – Typical Air Handler Unit TStat Pigtail Wire Colors & Connect 31
15 – SCWW/CCWW Chilled Water Capacity 4&5 Row Coil – C.T. 17 31 – Typical Cooling Unit Thermostat Wire Colors & Connections 31
16 – SCWE/CCWE Hot Water Capacity 4&5 Row Coil – PSC 18 32 – Typical Heat Pump Thermostat Wire Colors & Connections 31
17 – SCWE/CCWE Hot Water Capacity 4&5 Row Coil – C.T. 19 33 – Constant Torque Motor Terminals 33
18 – SCWW/CCWW Chilled Water Capacity 4&5 Row Coil - PSC 20
SECTION I: GENERAL
The following list includes important facts and information
regarding the electric furnace and its inclusions.
1. Horizontal Air Handler Unit is rated at either 120 volts AC
or 240 volts AC at 60 Hertz - 1 Phase
2. Horizontal Air Handler Unit is not designed
to operate
with a 50 HZ voltage supply.
3. Horizontal Air Handler Unit size varies by model
4. Four-wire thermostat operation for heating and cooling
5. Seven wire thermostat for heat pump operation.
6. Horizontal Air Handler Unit is equipped with blower for
A/C or Heat Pump operation for horizontal applications
only.
7. This air handler must not be operated without the door
installed
NOTE: This Horizontal Air Handler Unit and its components listed on
the A/C and Heat Pump equipment sticker were listed in combination
as a system by ETL for the United States and Canada.
SAVE THIS MANUAL FOR FUTURE REFERENCE
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