YorkメーカーMAの使用説明書/サービス説明書
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262675-UIM-A-0806 MODULAR NON-V ARIABLE SPEED AIR HANDLERS MODELS: MA INSTALLATION MANUAL ISO 9001 Certified Quality Management System SECTION I: GENERAL This modular air handler provides the flexibility for installation in any upflow , downflow , or horizontal application.
262675-UIM-A-0806 2 Unitary Products Group 1. Install this air handler only in a location and position as specified in SECTION III of these instructions. 2. Always install the air handler to operate within the air handler ’s intended maximum outlet air t emperature.
262675-UIM-A-0806 Unitary Products Group 3 DOWNFL OW AND HORIZONT AL CONVERSION These air handler units are supplied r eady to be installed in a upflow , downflow and left or right hand horizontal position. If the unit is to be installed with an evaporator coil, refer to Figure 1 for unit positioning information.
262675-UIM-A-0806 4 Unitary Products Group DUCT CONNECT ORS Air supply and return may be handled in one of several ways best suited to the installation.
262675-UIM-A-0806 Unitary Products Group 5 HORIZONT AL SUSPENSION For suspension of these units in hor izontal applications, it is recom- mended to use angle steel support brackets with threaded rods, sup - porting the units from the bottom, at the locations shown in Figure 4.
262675-UIM-A-0806 6 Unitary Products Group NOTE: All wiring must comply with lo cal and national electrical code requirements. Read and heed all unit caution labels. NOTE: It is possible to vary the amount of electric hea t turned on during the defrost cycle of a heat pump.
262675-UIM-A-0806 Unitary Products Group 7 External Relay Outputs The control includes thre e outputs to drive external relays having 24 V AC coils. The outputs have a maximum rating of 1.0 Amp pilot duty at 24 V AC. HUM OUT The HUM OUT output can be used to drive an external relay or solenoid (24 V AC coil) to control a humidifier .
262675-UIM-A-0806 8 Unitary Products Group SECTION VIII: BLO WER SPEED CONNECTIONS All air handlers contain 3-speed blower motors which are prewired to the control board. Adjust blower motor speed to provide air flow within the minimum and maximum limits approved for evaporator coil, electric heat and outdoor unit.
262675-UIM-A-0806 Unitary Products Group 9 SECTION IX: UNIT DA T A TA B L E 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 Motor HP 1/4 HP 3/4 HP 3/4 HP 1/2 HP Nominal RPM 1075 1075 1075 1075 V oltage 208 / 230 208 / 230 460 208 / 230 Amps Full Load 1.
262675-UIM-A-0806 10 Unitary Products Group * May be 0 (no breaker) or 1 (with breaker). TA B L E 1 1 : Electrical Data - 1 Ø - 208/23 0-1-60 Models MA Heat Kit - Single Phase Max. Stat i c Min. Spe ed Ta p To ta l H e a t 1 KW Staging KW MBH W1 Only W2 Only W1 + W2 208V 240V 208V 240V 208V 240V 208V 240V 208V 240V 08BN21 4HK*6500206 0.
262675-UIM-A-0806 Unitary Products Group 11 * May be 0 (no breaker) or 1 (with breaker). T ABLE 13: Electrical D a t a - (For Single Source Power Supply) - Copper W ire 1 Ø - 208 /230-1-60 Models MA Heat Kit - Single Phase* Heater Amps 240V Field W iring Min.
262675-UIM-A-0806 12 Unitary Products Group 2. Heaters are 3 Phase. T ABLE 15: Elect rica l Data - (For Multi-Source Power Supply) - Copper W ire 3 Ø - 2 08/230-3-60 Models MA Heater Model Min.
262675-UIM-A-0806 Unitary Products Group 13 All MA series air handler unit s are UL Listed up to 0.50" w .c. external static pressure, including air filte r , wet coil, and la rgest KW size heater .
262675-UIM-A-0806 14 Unitary Products Group All MA series air handler unit s are UL Listed up to 0.50" w .c. external static pressure, including air filte r, wet coil, and la rgest KW size heater .
262675-UIM-A-0806 Unitary Products Group 15 1. “Y” T erminal on Air Handler Control Board must be connected for full CFM and applications req uirin g 60 second blower of f del ay for SEER enhancement. 2. Optional humidity switch - contact s open on humidity rise.
Subject to change without notice. Printed in U.S.A. 262675-UIM-A-0806 Copyright © by York International Corp. 2006. Al l rights reserved. Supersedes: 170341-UIM-C-0806 Unitary 5005 Norman Product Y o.
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