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Bard Q-TEC Q24H2D Series, Installation Instructions Manual

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Bard Q-TEC Q24H2D Series Installation Instructions Manual Download Page 1

Manual 2100-602
Page 

1 of 44

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914 . . . Moving ahead, just as planned.

Manual: 2100-603
Supersedes: 

NEW

File: 

Vol II   Tab 14

Date: 11-05-13

Models:

Q24H2D Q30H2D
Q36H2D Q42H2D
Q48H2D Q60H2D

Q-TEC SERIES  
PACKAGED  
AIR CONDITIONER

INSTALLATION  
INSTRUCTIONS

Summary of Contents for Q-TEC Q24H2D Series

Page 1: ...Company Inc Bryan Ohio 43506 Since 1914 Moving ahead just as planned Manual 2100 603 Supersedes NEW File Vol II Tab 14 Date 11 05 13 Models Q24H2D Q30H2D Q36H2D Q42H2D Q48H2D Q60H2D Q TEC SERIES PACK...

Page 2: ...le 2 Electrical Specifications 5 Table 3 Operating Voltage Range 19 Table 4 Wall Thermostats 21 Table 5 Troubleshooting 38 Table 6 Temp vs Resistance of Temp Sensor 39 Table 7 Fan Blade Dimensions 42...

Page 3: ...mmer Manual N Air Conditioning Low Pressure Low Velocity ACCA Manual D or Duct System Design Manual Q Winter and Summer Air Conditioning FOR MORE INFORMATION CONTACT THESE PUBLISHERS ACCA Air Conditio...

Page 4: ...Ambient Control Outdoor Thermostat FILTER OPTIONS X 1 inch Fiberglass Standard F 2 inch Fiberglass P 2 inch Pleated Q 36 H 2 D A 10 X X X X X X CAPACITY 24 2 Ton 30 2 Ton 36 3 Ton 42 3 Ton 48 4 Ton 60...

Page 5: ...0 30 14 10 10 10 14 10 10 10 Q48H2DA0Z A05 A10 A15 230 208 1 1 1 or 2 1 or 2 1 or 2 38 63 88 88 50 70 90 90 8 6 3 3 10 8 8 8 38 38 38 25 50 50 50 50 50 25 50 50 8 8 8 10 8 8 10 10 10 10 10 10 Q48H2DB0...

Page 6: ...Manual 2100 603 Page 6 of 44 FIGURE 1 UNIT DIMENSIONS Q24H2D Q60H2D Q30H2D Q36H2D Q42H2D Q48H2D...

Page 7: ...moved to provide a place to hold the unit The unit can be slid forward on the skid until the front wheels hang over the edge of the skid See Figure 3 B The unit can be tipped forward and slid down the...

Page 8: ...parate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation Note particularly Start Procedure and any tags and or labels attached...

Page 9: ...Manual 2100 603 Page 9 of 44 FIGURE 6 DUCTED APPLICATION FIGURE 5 INSTALLATION WITH DUCT FREE PLENUM...

Page 10: ...ounts on top of the unit and has both vertically and horizontally adjustable louvers on the front discharge grille For hot water coil option a QPBHWxx F for free blow or QPBHWxx D for ducted airflow i...

Page 11: ...he drain is to be routed through an unconditioned space it must be protected from freezing The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall W...

Page 12: ...RE 11 REAR DRAIN TOP VIEW WALL MAXIMUM 10 FOR REAR DRAIN COUPLINGS NOT SHOWN BUT RECOMMENDED FOR EASE OF REMOVABILITY FOR SERVICE SLEEVE DRAIN LINE WALL BRACKET UNIT FIGURE 10 STANDARD REAR DRAIN FIGU...

Page 13: ...Manual 2100 603 Page 13 of 44 MIS 2469 DRAIN BOX WALL SLEEVE OVERFLOW TUBE CAULK AROUND TUBE FIGURE 12A...

Page 14: ...PLASTIC PIPE NIPPLE HORIZONTAL TO FLOOR TIGHTEN THREADS SO TEE IS THREADS APPLY TEFLON TAPE TO REAR DRAIN CONNECTION IN Q Tec PRODUCT 1 2 SLIP X 1 2 SLIP X 3 4 NPT TEE SUPPLIED WITH DRAIN BOX KIT PLU...

Page 15: ...Manual 2100 603 Page 15 of 44 REMOVE KNOCK OUT FOR INDOOR DRAIN HOSE CONNECTOR MIS 2471 FIGURE 12C If Used...

Page 16: ...RAIN PAN MOVE HOSE FROM ATTACHMENT IN LOWER DRAIN PAN AND SLIDE ONTO DRAIN BOX BARB FITTING SECURING WITH SUPPLIED CLAMP IF OUTDOOR PAN IS BYPASSED WILL REDUCE RISK OF ALGAE GROWTH IN THE OUTDOOR PAN...

Page 17: ...le FIGURE 13A UNIT MOUNTING BOTTOM TRIM PIECE BOTTOM TRIM EXTENSION MOUNTING BRACKET SIDE TRIM 2 PCS SIDE TRIM 2 PCS CABINET SIDE PANEL ENLARGED VIEW OF MOUNTING BRACKET SHOWING SLEEVE TO CABINET ATTA...

Page 18: ...ck both sides of the unit as it is being rolled to keep it centered in the sleeve Also check the alignment to the mounting brackets This unit must be level from side to side If adjustments are necessa...

Page 19: ...the installed KW of electric heat there may be two field power circuits required If this is the case the unit serial plate will so indicate All models are suitable only for connection with copper wire...

Page 20: ...during dehumidification mode the call for cooling takes precedence over the dehumidification and the unit will cool until the thermostat is satisfied Once the call for cooling is satisfied the unit m...

Page 21: ...may result in motor failure FIGURE 16 TABLE 4 WALL THERMOSTATS CONTROLS MIS 1285 Thermostat Predominant Features 8403 067 Carbon Dioxide Sensor with LCD for Sensor Readings 8403 060 1120 445 3 stage C...

Page 22: ...te Black White Black White Black Red Yellow Plug 4 2 3 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 W1 E 4102 063 B 8403 060 SC With X Thermostat Option FACTORY INSTALLED JUMPER 1 Dehumidificati...

Page 23: ...ellow Plug 4 2 3 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 Red White MIS 2690 C 6 5 And Demand Ventilation FACTORY INSTALLED JUMPER 1 With X Thermostat Option Dehumidification Wiring Diagram...

Page 24: ...Diagram Thermostat Plug 2 Pink Red White Brown Blue Yellow Orange Brown White Purple White Black White Brown Blue Yellow Orange Brown White Purple White Red Red White Red White Red White 1 2 3 4 5 Plu...

Page 25: ...og Out CO Controller Bard Part 8403 067 2 2 1 2 3 4 5 6 Red White 1 COM Yellow Orange Thermostat Blue Brown Red White Black White Red White 4102 066 B Plug 4 1 2 3 4 5 6 7 8 9 10 11 12 L C R W2 B W1 E...

Page 26: ...ermostat Plug 2 Pink Red White Brown Blue Yellow Orange Brown White Purple White Black White Brown Blue Yellow Orange Brown White Purple White Red Red White Red White Red White Black White Black White...

Page 27: ...e leaks and recharges R 410A refrigerant is close to being an azeotropic blend it behaves like a pure compound or single component refrigerant The remaining refrigerant charge in the system may be use...

Page 28: ...age due to phase reversal The phase monitor in this unit is equipped with two LEDs If the Y signal is present at the phase monitor and phases are correct the green LED will light and the compressor co...

Page 29: ...cabinet side panel g Remove screws that attach the duct work to the unit flanges This unit is equipped with four rollers mounted to the base For ease of pulling unit out from the wall you may want to...

Page 30: ...gh the opening in the back of the unit The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed Q Tec ENERGY RECOVERY VENTILATOR Option Before starti...

Page 31: ...Manual 2100 603 Page 31 of 44 FIGURE 22 FRESH AIR DAMPER REMOVAL MOUNTING SCREW...

Page 32: ...Manual 2100 603 Page 32 of 44 FIGURE 23 QERV REMOVAL MOUNTING SCREWS FRONT FILL LOWER BLOWER ASSEMBLY POWER CONNECTOR POWER CONNECTORS...

Page 33: ...g to hold the ball on the seat This will make the method of checking the ball freedom with a magnet difficult Refer to Figures 25 and 26 for the location of the check valve and drain back capillary Wh...

Page 34: ...OR REHEAT COIL Figure 25 shows the refrigerant gas flow through the reheat coil during the dehumidification mode When the unit is in standard cooling Figure 26 or heating mode the reheat coil is inact...

Page 35: ...perating pressures can be observed Pressure curves can be found later in the manual covering all models on both cooling and heating cycles It is imperative to match the correct pressure curve to the u...

Page 36: ...erwise the timing will remain accelerated and run through the 1 minute minimum defrost length sequence in a matter of seconds and will automatically terminate the defrost sequence There is an initiate...

Page 37: ...44 120 SW 1 SW 2 TIME SEC OFF OFF ON ON OFF ON OFF ON 30 60 180 LOW PRESSURE BYPASS TIMER SWITCH FACTORY SETTING 120 SECONDS ACCUMULATED RUN TIME SELECTOR FACTORY SETTING 30 MIN MIS 2684 A ON OFF FIGU...

Page 38: ...eck for 24V between RV C and B C 1 Check control circuit wiring 2 Replace heat pump control Reversing valve solenoid coil defective Check for open or shorted coil Replace solenoid coil Unit will not g...

Page 39: ...43554 60 0 15310 98 0 6098 15 0 139576 23 0 42295 61 0 14921 99 0 5961 14 0 134956 24 0 41077 62 0 14544 100 0 5827 13 0 130506 25 0 39898 63 0 14177 101 0 5697 12 0 126219 26 0 38757 64 0 13820 102...

Page 40: ...s air noise cabinet duct or motor noise interview customer if necessary Air noise High static creating high blower speed Is airflow set properly Does removing filter cause blower to slow down Check f...

Page 41: ...ion d Add a drip loop to the cables so that water cannot enter the motor by draining down the cables Refer to Figure 26 The installation is now complete Reapply the AC power to the HVAC equipment and...

Page 42: ...of refrigerant listed on the serial plate AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity Reference Table 8 The following pressure tables show nom...

Page 43: ...w Side High Side 126 382 129 404 132 427 134 451 137 477 139 504 141 533 143 563 145 594 85 DB 72 WB Low Side High Side 130 395 134 418 137 442 139 467 142 494 144 522 146 552 148 583 150 615 Q48H2 75...

Page 44: ...Cooling Mode Unoccupied 1 X X X X X X X Cooling Mode Occupied 1 X X X X X 1st Stage Heating Occupied 2 X X X X X X X X X 1st Stage Heating Unoccupied 2 X X X X X X X 2nd Stage Heating Occupied 3 X X...

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