Carrier AIRSTREAM 42BHC User Manual

© Carrier Corporation 2014 Form 42WKN-5PDHydronic ceiling cassette units offer:• 6 chilled water cooling models to properly match job• Optional electr

10CHILLED WATER UNIT COOLING CAPACITIESLEGEND NOTES:1. All duties based on high fan speed except where stated otherwise.2. Cooling capacities are gros

11CHILLED WATER UNIT — TWO-PIPE CHANGEOVER HEATING CAPACITIESLEGENDNOTES:1. All duties based on high fan speed except where stated otherwise.2. Pressu

12LEGEND*Standard unit fitted with optional electric heating elements. Availablewith 208/220/230-v model units only.Typical wiring schematicNOTE: Refe

13Sequence of operationElectro-mechanical controls — A 24-v signal from thethermostat to terminal G supplies power to the blowermotor(s), condensate p

14Commercial Hydronic Cassette Fan CoilHVAC Guide SpecificationsSize Range: ¾ to 3 Tons7,000 to 36,000 Btuh,Nominal Cooling15,000 to 66,000 Btuh,Nomin

153. Thermostat:The thermostat shall be commercial grade tocontrol unit operation and shall provide singlespeed fan capability. Automatic changeoverfr

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Pg 1

2FanThe backward-curved, centrifugal fans are statically and dynamically balanced for quiet operation. Fan impellers are made from either aluminu

3LEGEND NOTES:1. Cooling capacity based on 80 F dry bulb/67 F wet bulb indoor anda 45 F entering/55 F leaving chilled water temperature.2. Heating cap

4Factory-installed optionsElectro-mechanical controls include an electro-mechanical controller with a 24-v transformer. The con-troller requires a 24-

5a total of four knockouts are available and are arranged inpairs along two of the unit sides (two per side).NOTE: On the 08,12 size units, it is reco

6Dimensions 25 3/1625 3/161 11/1622 1/211 1/42 3/410 11/1619 9/1619 1/2 12 9/161 7/1622 15/167/822 1/2 8 13/1611 5/164 11/163 11/162 5/8O5 3/166 1/25

7 373711/1632 3/82 3/49 1/22 5/828 11/1631 3/828 9/16 12 9/161 13/164 5/868 5/81 5/85 5/167 3/42 3/42 3/44 7/84 15/1632 5/165 3/83 3/161 5/163 8 13/1

8Dimensions (cont)AAVIEW A-A49 3/1637 2 1/432 3/84 3/411 1/22 5/828 11/16 12 9/1628 9/16 1 7/843 1/27/8 8 13/1619 5/812 7/166 3/83 5/83 3/8364 5/87

9I Determine job requirements.Given:Room Sensible Cooling Load . . . . . . . .8,200 BtuhRoom Total Cooling Load . . . . . . . . .11,000 BtuhEntering-A