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Carrier 50HT-A07, Installation Instructions Manual

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Carrier 50HT-A07 Installation Instructions Manual Download Page 11

11

Sensor Wiring

CO2 Sensor

C08632

Fig. 11 -- CO

2

Sensor Location

FILTER ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COIL ACCESS PANEL

COMPRESSOR

ACCESS PANEL

C06023

Fig. 12 -- Typical Access Panel Locations

SEAL STRIP 

HOOD TOP 

SEAL STRIP 

HOOD  
SIDE 

SCREEN 
RETAINER 

HOOD SIDE 

SCREEN 
TRACKS 

OUTDOOR AIR INLET SCREEN

SEAL STRIP 

OUTDOOR-AIR HOOD – UNASSEMBLED

HOOD SIDES AND TOP ASSEMBLED 

TRACKS FOR AIR 
INLET SCREEN 

HOOD  
SIDE 

HOOD TOP 

C07504

Fig. 13 -- Outdoor--Air Hood Details

50H

T

Summary of Contents for 50HT-A07

Page 1: ...gency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses and work gloves Use quenching cloths for brazing operations and have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to t...

Page 2: ...erate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Ware safety glasses and gloves when handling refrigerants Keep...

Page 3: ...3 C10314 Fig 1 Dimensional Drawing 50HT ...

Page 4: ...4 C10315 Fig 1 Unit Dimensional Drawing cont 50HT ...

Page 5: ... of Unit Installation The support method used for this unit will dictate different sequences for the steps of unit installation For example on curb mounted units some accessories must be installed on the unit before the unit is placed on the curb Review the following for recommended sequences for installation steps Curb mounted installation Install curb Install field fabricated ductwork inside cur...

Page 6: ...Ductwork must be attached to curb and not to the unit The accessory thru the base power and gas connection package must be installed before the unit is set on the roof curb If electric and control wiring is to be routed through the basepan attach the accessory thru the base service connections to the basepan in accordance with the accessory installation instructions NOTE The gasketing of the unit ...

Page 7: ...7 C10316 Fig 3 Roof Curb Details 50HT ...

Page 8: ...d ductwork Step 6 Rig and Place Unit Keep unit upright and do not drop Spreader bars must be used when lifting the unit even when the top crate remains in place Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 1 and Fig 5 for additional information Lifting holes are provided in base rails as shown in Fig5 Refer to rigging instructions on unit Before...

Page 9: ...penings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork Step 8 Install Outside Air Hood Economizer Hood Removal and Setup Factory Option 1 The hood is shipped in knock down form and located in the return air compartment It is attached to the economizer using two plastic ...

Page 10: ... Metal Tray Qty 2 C08639 Fig 10 Damper Assembly CO2 Sensor Factory Option 1 CO2 sensor is now a factory option and must be used with an economizer 2 The CO2 sensor is located on the lower side of the economizer See Fig 11 3 If additional installation and operating instructions are required for the CO2 sensor please reference in stallation instruction 48 50H P 20SI 50HT ...

Page 11: ...OMPRESSOR ACCESS PANEL C06023 Fig 12 Typical Access Panel Locations SEAL STRIP HOOD TOP SEAL STRIP HOOD SIDE SCREEN RETAINER HOOD SIDE SCREEN TRACKS OUTDOOR AIR INLET SCREEN SEAL STRIP OUTDOOR AIR HOOD UNASSEMBLED HOOD SIDES AND TOP ASSEMBLED TRACKS FOR AIR INLET SCREEN HOOD SIDE HOOD TOP C07504 Fig 13 Outdoor Air Hood Details 50HT ...

Page 12: ...ood sides to the hood top Use screws provided to attach the hood sides to the unit See Fig 15 3 Remove the shipping tape holding the economizer ba rometric relief damper in place 4 Insert the hood divider between the hood sides See Fig 15 and 16 Secure hood divider with 2 screws on each hood side The hood divider is also used as the bottom filter rack for the aluminum filter 5 Open the filter clip...

Page 13: ... electrical fault should occur This ground may consist of electrical wire connected to unit ground lug in control compartment or conduit approved for electrical ground when installed in accordance with NEC ANSI NFPA 70 latest edition in Canada Canadian Electrical Code CSA Canadian Standards Association C22 1 and local electrical codes WARNING NOTE Check all factory and field electrical connections...

Page 14: ...o the unit power terminal blocks and equipment ground Maximum wire size is 2 ga AWG per pole Provide a ground fault and short circuit over current protection device fuse or breaker per NEC Article 440 or local codes Refer to unit informative data plate for MOCP Maximum Over current Protection device size All field wiring must comply with the NEC and local requirements All units except 208 230 v un...

Page 15: ...o exit the cover Check for full closing and latching RECEPTACLE NOT INCLUDED COVER WHILE IN USE WEATHERPROOF BASE PLATE FOR GFCI RECEPTACLE C09022 Fig 22 Weatherproof Cover Installation Non powered type This type requires the field installation of a general purpose 125 volt 15 A circuit powered from a source elsewhere in the building Observe national and local codes when selecting wire size fuse o...

Page 16: ...ontrol wires to pass through the basepan The 1 2 in electrical bulkhead connector allows the high voltage power wires to pass through the basepan See Fig 25 LOW VOLTAGE CONDUIT CONNECTOR HIGH VOLTAGE CONDUIT CONNECTOR C08637 Fig 25 Thru Base Connection Fittings Check tightness of connector lock nuts before connecting electrical conduits Field supplied and field installed liquid tight conduit conne...

Page 17: ...he thermostat and will require a junction box and splice at the thermostat Unit without thru base connection kit Pass the thermostat control wires through the hole provided in the corner post then feed the wires through the conduit built into the raceway of the corner post to the control box Pull the wires over to the terminal strip on the upper left corner of the Controls Connection Board See Fig...

Page 18: ...kage part number value is 1 and a bare heater model number value is 0 DISCONNECT MOUNTING LOCATION UNIT BLOCK OFF PANEL OUTDOOR ACCESS PANEL INDOOR ACCESS PANEL C08133 Fig 28 Typical Access Panel Location 3 6 Ton DISCONNECT MOUNTING LOCATION EMT OR RIGID CONDUIT FIELD SUPPLIED SINGLE POINT BOX CENTER POST HEATER COVERS HEATER MOUNTING BRACKET HEATER MODULE LOCATION 2 HEATER MODULE LOCATION 1 SINGL...

Page 19: ...on the heater bulkhead to the left of Heater 1 Connect the VIO lead from Heater 1 to terminal TB4 1 For 2 stage heating connect the VIO lead from Heater 2 to terminal TB4 2 For 1 stage heating with 2 heater modules connect the VIO lead from both Heater 1 and 2 to terminal TB4 1 Connect both BRN leads to terminal TB4 3 See Fig 32 ORN BRN Field Connections HR1 On Heater 1 in Position 1 HR2 On Heater...

Page 20: ...nel etc Duct smoke sensor controller Fastener 2X Controller cover Conduit nuts supplied by installer Conduit support plate Cover gasket ordering option Conduit couplings supplied by installer Terminal block cover Controller housing and electronics Alarm Power Test reset switch Trouble C08208 Fig 33 Controller Assembly Duct smoke sensor See Detail A Exhaust tube Plug Sampling tube ordered separatel...

Page 21: ... through the side plates of the economizer housing placing it across the return air opening on the unit basepan See Fig 37 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting...

Page 22: ...basepan Flexible Exhaust Tubes Screws Sample Tube C08126 Fig 39 Return Air Detector Shipping Position C08127 Fig 40 Return Air Sensor Operating Position Additional Application Data Refer to Catalog No HKRNKA 1XA for discussions on additional control features of these smoke detectors including multiple unit coordination 50HT ...

Page 23: ... 0 21 1 108A00 109A00 25 5 23 4 LEGEND CO Convenient outlet DISC Disconnect FLA Full load amps IFM Indoor fan motor LRA Locked rotor amps MCA Minimum circuit amps MOCP Maximum over current protection PE Power exhaust UNPWRD CO Unpowered convenient outlet NOTES 1 In compliance with NEC requirements for multimotor and combina tion load equipment refer to NEC Articles 430 and 440 the overcurrent prot...

Page 24: ...7310 W Morris St S Indianapolis IN 46231 Printed in U S A Edition Date 03 10 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50HT 01SI Replaces NEW 50HT ...

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