Table Of Contents - Carrier 42BJ ULTRA Series Installation Manual

Contents
1 - INTRODUCTION .........................................................................................................................................................................4
2 - FEATURES ....................................................................................................................................................................................5
2.1 - Physical and electrical data ..........................................................................................................................................................6
2.2 - Dimensional drawings ..................................................................................................................................................................7
2.3 - ULTRA packaging......................................................................................................................................................................12
2.4 - Receiving a shipment - installation methods .............................................................................................................................12
3 - SAFETY CONSIDERATIONS AND REGULATIONS ..........................................................................................................13
3.1 - General........................................................................................................................................................................................13
3.2 - Precautions against electrocution ...............................................................................................................................................13
3.3 - Installation Recommendations ...................................................................................................................................................13
3.4 - Conformity..................................................................................................................................................................................13
4 - INSTALLING THE 42BJ ULTRA ............................................................................................................................................14
4.1 - Matching the ULTRA to the false ceiling ..................................................................................................................................14
4.2 - Safety precautions ......................................................................................................................................................................14
4.3 - Installation procedure .................................................................................................................................................................14
4.4 - Removing an ULTRA.................................................................................................................................................................15
5 - FRESH AIR..................................................................................................................................................................................16
5.1 - Constant flow fresh air controller ..............................................................................................................................................16
5.2 - Fresh air duct as optional accessory...........................................................................................................................................16
6 - FAN MOTOR...............................................................................................................................................................................17
6.1 - Description..................................................................................................................................................................................17
6.2 - Removing the fan assembly .......................................................................................................................................................17
6.3 - Replacing the capacitor ..............................................................................................................................................................17
7 - WATER COIL..............................................................................................................................................................................18
7.1 - Description..................................................................................................................................................................................18
7.2 - Removing the water coil ............................................................................................................................................................18
7.3 - Coil inlet/outlet positions ...........................................................................................................................................................19
8 - WATER FLOW CONTROL VALVES ......................................................................................................................................21
8.1 - Description..................................................................................................................................................................................21
8.2 - Replacing actuators ....................................................................................................................................................................21
8.3 - Electrical circuit diagrams for actuators ....................................................................................................................................21
8.4 - Replacing a valve body ..............................................................................................................................................................21
9 - FLEXIBLE WATER HOSES .....................................................................................................................................................22
10 - AIR FILTER AND ACCESS ....................................................................................................................................................23
10.1 - Description................................................................................................................................................................................23
10.2 - Replacing the air filter..............................................................................................................................................................23
11 - ELECTRIC HEATER...............................................................................................................................................................24
11.1 - Electric resistance heater - size 1.6 ..........................................................................................................................................24
11.2 - Shielded electric heater with spiral fins - sizes 2.6 and 4.7 .....................................................................................................24
11.3 - Replacing the electric heater ....................................................................................................................................................24
11.4 - Wiring diagram for a single stage of the electric heater ..........................................................................................................25
12 - CARRIER ELECTROMECHANICAL CONTROLLER ....................................................................................................26
12.1 - Description................................................................................................................................................................................26
12.2 - The various ULTRA configurations available..........................................................................................................................26
12.3 - Technical specification for the heating/cooling changeover switch ........................................................................................26
12.4 - Master/slave control .................................................................................................................................................................28
12.5 - Wiring diagrams .......................................................................................................................................................................28
13 - ACCESSORIES .........................................................................................................................................................................31
13.1 - Adjustable feet for installing an ULTRA in a false floor .........................................................................................................31
13.2 - Condensate drain pump ............................................................................................................................................................31