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INSTALLATION MANUAL
MODULAR
NON-VARIABLE SPEED AIR HANDLERS
ISO 9001
Certified Quality
MODELS: MA
Management System
LIST OF SECTIONS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 REQUIRED CONTROL SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 LINE POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .
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262675-UIM-A-0806 INSPECTION As soon as a unit is received, it should be inspected for possible dam- age during transit. If damage is evident, the extent of the damage FIRE OR ELECTRICAL HAZARD should be noted on the carrier’s freight bill. A separate request for Failure to follow the safety warnings exactly could result in serious inspection by the carrier’s agent should be made in writing. Also, before injury, death or property damage. installation the unit should be checked for screws or bolt
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262675-UIM-A-0806 Horizontal Right Horizontal Left Up Flow Down Flow FIGURE 1: Typical Installation with MC or FC Evaporator Coil DOWNFLOW AND HORIZONTAL CONVERSION AIR HANDLER AND COIL DOWNFLOW INSTRUCTIONS These air handler units are supplied ready to be installed in a upflow, downflow and left or right hand horizontal position. 1. Position blower casing over duct connection and secure such that the supply air end of the blower is down. If the unit is to be installed with an evaporator coil
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262675-UIM-A-0806 J E 10-3/8” K A TOP OUTLET DIMENSIONS CIRCUIT BREAKER PANEL 22” B D 20-1/2” BOTTOM INLET DIMENSIONS FIGURE 3: Dimensions & Duct Connection Dimensions TABLE 1: Dimensions 1 Dimensions Wiring Knockouts MA ABD E J K MODELS Height Width Power Control 08B 17-1/2 16-1/2 14-19/32 12B 17-1/2 16-1/2 14-19/32 7/8” (1/2”) 14D 25 24-1/2 23-1/2 21-19/32 1 3/8” (1”) 7/8” (1/2”) 1 23/32” (1 1/4”) 16C 21 20 18-3/32 20D 24-1/2 23-1/2 21-19/32 1. Actual size (Conduit size). The supply air duc
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262675-UIM-A-0806 HORIZONTAL SUSPENSION SECTION IV: ELECTRIC HEATER INSTALLATION For suspension of these units in horizontal applications, it is recom- mended to use angle steel support brackets with threaded rods, sup- If the air handler requires electric heat, install the electric heat kit porting the units from the bottom, at the locations shown in Figure 4. according to the installation instructions included with the kit. After installing the kit, mark the air handler nameplate to designate
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262675-UIM-A-0806 NOTE: All wiring must comply with local and national electrical code FUNCTIONALITY AND OPERATION requirements. Read and heed all unit caution labels. Jumper Positions NOTE: It is possible to vary the amount of electric heat turned on during Heat Enable Jumper the defrost cycle of a heat pump. Standard wiring will only bring on the first stage of electric heat during defrost. See Heat Output and Limit The HEAT ENABLE jumper configures the control for heat kit operation. Connecti
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262675-UIM-A-0806 External Relay Outputs Depending on the heat kit installed in the air handler, the control pro- vides the flexibility to configure the amount of heat delivered with the The control includes three outputs to drive external relays having 24 first stage heating call. As an example, when the control’s W1 input is VAC coils. The outputs have a maximum rating of 1.0 Amp pilot duty at connected to the room thermostat’s first stage heat signal, a call for first 24 VAC. stage heat will
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262675-UIM-A-0806 ELECTRIC HEAT 1 PHASE ELECTRIC HEAT TYPICAL WIRING WITHOUT ELECTRIC HEAT GND. WITHOUT CIRCUIT BREAKER WITH CIRCUIT BREAKER GND. LUG LUG 3 PHASE (10 - 15 KW) AS SHIPPED FROM FACTORY SINGLE SOURCE GND. GND. LUG (2.5 - 25 KW) - 25 KW SHOWN LUG POWER SUPPLY GND. LUG GND. LUG POWER SUPPLY 1 PHASE ELECTRIC HEAT TERMINAL BLOCK WITH CIRCUIT BREAKER & BREAKER BAR REMOVED ELECTRIC HEAT MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN WITHOUT CIRCUIT BREAKER POWER GND. LUG GND. SINGLE SOURCE (2.5
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262675-UIM-A-0806 SECTION IX: UNIT DATA TABLE 7: Physical and Electrical Data Models: MA 08B21 12B21 12B41 14D21 Blower - Diameter x Width 10 x 9 10 x 9 10 x 9 10 x 10 HP 1/4 HP 3/4 HP 3/4 HP 1/2 HP Motor Nominal RPM 1075 1075 1075 1075 Voltage 208 / 230 208 / 230 460 208 / 230 Amps Full Load 1.5 3.5 2.3 2.4 Type DISPOSABLE OR PERMANENT 1 Size 16 x 20 x 1 16 x 20 x 1 16 x 20 x 1 22 x 20 x 1 Filter Permanent Type Kit 1PF0601BK 1PF0601BK 1PF0601BK 1PF0603BK Filter Rack 1FR0617 1FR0617 1FR0617 1FR0
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262675-UIM-A-0806 TABLE 11: Electrical Data - 1 Ø - 208/230-1-60 1 KW Staging Total Heat Min. Models Heat Kit - Single Max. Speed KW MBH W1 Only W2 Only W1 + W2 MA Phase Static Tap 208V 240V 208V 240V 208V 240V 208V 240V 208V 240V 4HK*6500206 0.5 Lo 1.9 2.5 6.4 8.5 1.9 2.5 1.9 2.5 1.9 2.5 4HK*6500506 0.5 Lo 3.6 4.8 12.3 16.4 3.6 4.8 3.6 4.8 3.6 4.8 08BN21 4HK*6500806 0.5 Med 5.6 7.5 19.2 25.6 2.8 3.75 5.6 7.5 5.6 7.5 4HK*6501006 0.5 Hi 7.2 9.6 24.6 32.8 3.6 4.8 7.2 9.6 7.2 9.6 4HK*6500506 0.5
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262675-UIM-A-0806 TABLE 13: Electrical Data - (For Single Source Power Supply) - Copper Wire 1 Ø - 208/230-1-60 Field Wiring Heater Models Heat Kit - Single 1 Amps Min. Circuit Ampacity 75°C Wire Size - AWG Max. O.C.P. Amps/Type MA Phase* 240V 208V 240V 208V 240V 208V 240V 4HK*6500206 10.4 13.03 14.88 15 15 14 14 4HK*6500506 20.0 23.42 26.88 30 30 10 10 08BN21 4HK*6500806 31.3 35.60 41.00 40 45 8 8 4HK*6501006 40.0 45.08 51.88 50 60 8 6 4HK*6500506 20.0 25.79 29.38 30 30 10 10 4HK*6500806 31.3
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262675-UIM-A-0806 TABLE 15: Electrical Data - (For Multi-Source Power Supply) - Copper Wire 3 Ø - 208/230-3-60 1 Min. Circuit Ampacity 75°C Wire Size - AWG Max. O.C.P. Amps/Type Circuit Circuit Circuit Models Heater MA Model 1st 2nd 3rd 1st 2nd 3rd 1st 2nd 3rd 208/240 208/240 208/240 208/240 208/240 208/240 208/240 208/240 208/240 20D 4HK16502525 40.0 / 45.4 31.3 / 36.1 - / - 40 / 50 35 / 40 - / - 8 / 8 8 / 8 - / - 1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or
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262675-UIM-A-0806 TABLE 19: Air Flow Data - 60 Hz Models (230 & 460 Volt) 230 / 460 Volt - 60 Hz Models Models Blower Motor 1 CFM @ External Static Pressure - IWC MA MC Speed 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 High 1102 986 870 754 638 521 405 289 173 57 MC18B**H Med. 831 737 644 551 457 364 271 178 84 N/A Low 615 537 458 379 300 221 142 63 N/A N/A 08B High 1112 1001 890 780 669 558 447 336 225 114 MC24B**H Med. 851 759 667 576 484 392 300 208 116 25 Low 643 562 480 399 317 236 154 73
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262675-UIM-A-0806 TABLE 20: Air Flow Data - 60 Hz Models (208 Volt) 208 Volt - 60 Hz Models Models Blower Motor 1 CFM @ External Static Pressure - IWC MA MC Speed 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 High 1080 964 848 732 615 499 383 267 150 34 MC18B**H Med. 712 628 544 461 377 293 210 126 42 N/A Low 529 452 376 299 223 146 70 N/A N/A N/A 08B High 1039 932 825 717 610 502 395 288 180 73 MC24B**H Med. 743 659 575 491 407 323 239 156 72 N/A Low 532 460 387 315 242 169 97 24 N/A N/A High 1
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262675-UIM-A-0806 MA SERIES - Air Handler Control Wiring MA SERIES - Air Handler Control Wiring Typical A/C - Cooling only Applications Typical A/C with Electric Heat Applications AIR HANDLER AIR HANDLER THERMOSTAT 1-STAGE THERMOSTAT 1-STAGE BOARD BOARD AIR CONDITIONING AIR CONDITIONING RR RR G G G G Y Y/Y2 Y Y Y/Y2 Y W1 Y1 Y1 W2 W2 W2 W2 * * W1 W1 C HUMIDISTAT W1 HUMIDISTAT C O O HUM HUM X/L X/L COM C COM C FIGURE 10: Cooling Models with Electric Heat Wiring 1. “Y” Terminal on Air Handler Con
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NOTES Subject to change without notice. Printed in U.S.A. 262675-UIM-A-0806 Copyright © by York International Corp. 2006. All rights reserved. Supersedes: 170341-UIM-C-0806 Unitary 5005 Norman Product York OK Group Drive 73069
