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507746-01

Issue 1821

Page 8 of 39

Use  the  following  procedures  to  configure  the  unit  for 

horizontal left-hand discharge operations:

1.  Pull the coil assembly from unit. Pull off the horizontal 

drain pan.

2.  Remove the drain plugs from back drain holes on 

horizontal drain pan and reinstall them on front holes.

After removal of drain pan plug(s), check drain hole(s) 

to verify that drain opening is fully open and free of any 

debris. Also check to make sure that no debris has 

fallen into the drain pan during installation that may plug 

up the drain opening. 

 IMPORTANT

3.  Rotate drain pan 180º front-to-back and install it on the 

opposite side of the coil.

4.  Remove screws from top cap. Remove horizontal drip 

shield screw located in the center of the back coil end 

seal as illustrated in Detail A in Figure 4.

5.  Rotate horizontal drip shield 180º front-to-back.
6.  Remove plastic plug from left hole on coil front end seal 

and reinstall plug in back hole. Reinstall horizontal drip 

shield screw in front coil end seal. Drip shield should 

drain downward into horizontal drain pan inside coil.

NOTE: 

Be  very  careful  when  reinstalling  the  screws 

into  the  coil  end  plate  engaging  holes.  Misaligned 

screws may damage the coil.

7. 

From  the  upflow  position,  flip  cabinet  90º  to  the  left 

and set into place. Replace blower assembly. Secure 

coil in place by bending down the tab on the cabinet 

support rail as illustrated in Figure 4 and Figure 5.

HORIZONTAL DRIP SHIELD (BCE7S60 MODEL)

DOWN-FLOW RAIL

FRONT EDGE OF HORIZONTAL 

DRAIN PAN

Figure 5. Left-Hand Discharge Configuration 

8.  Install the horizontal shield (BCE7S60 model) on the 

front edge of the horizontal drain pan as illustrated in 

Figure 5.

NOTE: 

For  horizontal  applications  in  high  humidity 

areas,  remove  the  downflow  rail  closest  to  the  drain 

pan. To remove rail, remove screw from rail at back 

of unit and at cabinet support rail. Remove downflow 

rail then replace screws. Also, seal around the exiting 

drain pipe, liquid and suction lines to prevent infiltration 

of humid air.

9.  Knock out drain seal plate from access door. Secure 

plate to cabinet front flange with screw provided.

10.  Flip access door and replace it on the unit.
11. 

Set unit so that it is sloped 1/4ʺ toward the drain pan 

end of the unit. Connect return and supply air plenums 

as required using sheet metal screws.

12.  If suspending the unit, it must be supported along the 

entire length of the cabinet. If using chain or strap, 

use a piece of angle iron or sheet metal attached to 

the unit (either above or below) so that the full length 

of the cabinet is supported. Use securing screws no 

longer than 1/2ʺ to avoid damage to coil or filter, as 

illustrated in Figure 3. Connect return and supply air 

plenums as required using sheet metal screws.

Downflow Application

Use  the  following  procedures  to  configure  the  unit  for 

downflow operations: 

If electric heat sections with circuit breakers is applied 

to  downflow  BCE7S  unit,  the  circuit  breakers  must 

be rotated 180° to the UP position. See electric heat 

installation instructions for more details.

 IMPORTANT

Table 3 outlines the sizes of the various drip shields.

NOTE: 

(

BCE7S60

  Model  Only)  Remove  access  panels 

and  horizontal  drip  shield  from  the  corrugated  padding 

between the blower and coil assembly.

1.  Remove the coil assembly from the unit.

2. 

For best efficiency and air flow, remove the horizontal 

drain  pan  from  the  units  in  downflow  positions  as 

illustrated in Figure 6.

3.  Rotate cabinet 180º from the upright position. See 

Figure  6.  You  may  need  to  first  remove  the  blower 

assembly to lighten the cabinet for lifting.

4.  Foam tape that is provided creates a seal between the 

drip shield and the coil so that water does not leak into 

the air stream. The foam tape pieces are precut. Apply 

the tape to the drip shields as illustrated in Figure 7 

and specified as follows:

•  Apply two pieces of foam tape provided down both 

ends of each shield. The tape should measure 

4-3/4ʺ X 2ʺ (120 X 25 mm). Ensure that the tape 

covers both sides of the shield equally.

•  Apply the longer piece of 1 inch wide foam tape 

between the end pieces of tape.

5. 

From  the  underside  of  the  coil,  install  the  downflow 

drip shield firmly in place as illustrated in Figure 8.

Содержание BCE7S Series

Страница 1: ...LINKS GUIDE ON PAGE 19 Save these instructions for future reference INSTALLATION INSTRUCTIONS BCE7S Series Air Handler P 507746 01 P507746 01 Manufactured By Allied Air Enterprises LLC A Lennox Intern...

Страница 2: ...AIR TOP VIEW FRONT VIEW SIDE VIEW BLOWER A B C 11 1 16 281 F D E COIL 5 8 16 5 8 16 5 8 16 5 8 16 5 8 16 LOW VOLTAGE RIGHT SIDE LINE VOLTAGE LEFT SIDE DOWN FLOW POSITION 1 25 UP FLOW POSITION CONDENS...

Страница 3: ...ly Air Opening FILTER LOW VOLTAGE INLETS TOP AND LEFT SIDE END VIEW BLOWER B C D Coil 3 4 19 3 4 19 3 4 19 Return Air Opening F E 5 8 16 5 8 16 5 8 16 END VIEW Air Flow OPTIONAL ELECTRIC HEAT FIELD IN...

Страница 4: ...while handling this equipment and wear gloves and protective clothing CAUTION A thermostat is not included and must be ordered separately A Comfort Sync thermostat must be used in communicating appli...

Страница 5: ...han 24 inches 610 mm allow a minimum of the cabinet depth plus 2 inches 51 mm Table 1 Installation Clearances This unit must be matched with an indoor coil as specified in the AHRI Database Coils prev...

Страница 6: ...urn air plenum on a stand that is at least 14 from the floor to allow for proper air return An optional upflow unit stand as listed in Table 2 is available Model Kit Number All unit sizes 45K32 Table...

Страница 7: ...NT VIEW END VIEW ANGLE IRON OR SHEET METAL ELECTRICAL INLET CLEARANCE 4 102 mm 1 2 SCREWS MAXIMUM Figure 3 Suspending Horizontal Unit Horizontal Left Hand Discharge Application NOTE For horizontal app...

Страница 8: ...ration of humid air 9 Knock out drain seal plate from access door Secure plate to cabinet front flange with screw provided 10 Flip access door and replace it on the unit 11 Set unit so that it is slop...

Страница 9: ...PROPERLY SIZED FLOOR OPENING AIR HANDER UNIT Figure 9 Downflow Combustible Flooring Base 8 For downflow installation on combustible flooring an additive base must be used as illustrated in Figure 9 D...

Страница 10: ...to protect against burns Wash hands with soap and water after handling brazing alloys and flux CAUTION To prevent the build up of high levels of nitrogen when purging it must be done in a well ventila...

Страница 11: ...E REQUIREMENTS NOTE REFRIGERANT LINE SETS SHOULD BE ROUTED TO ALLOW FILTER ACCESSIBILITY NOTE BCE7S SERIES UNITS USE NITROGEN OR DRY AIR AS A HOLDING CHARGE IF THERE IS NO PRESSURE WHEN THE RUBBER PLU...

Страница 12: ...SECONDARY DRAIN PAN OR CONNECTED TO THE OVERFLOW DRAIN OUTLET OF THE AIR HANDLER DRAIN PAN TRAPS MUST BE DEEP ENOUGH TO OFFSET MAXIMUM STATIC DIFFERENCES GENERALLY TWO INCHES 51MM DRAIN LINE SHOULD S...

Страница 13: ...ure which results in water blow off problems This is especially important when the unit is installed in an unconditioned area Make sure the liquid line and suction line entry points are sealed with ei...

Страница 14: ...507746 01 Issue 1821 Page 14 of 39 Figure 14 BCE7S Air Handler Unit Typical Wiring Diagram...

Страница 15: ...R W3 H W2 W2 W1 W1 W1 O O O L L Y1 Y1 Y1 Y2 Y2 G G C C C T T D B Y2 DS O D SENSOR X2658 Y2 OUT BL 1 1 CUT ON BOARD LINK R O CUT ON BOARD LINK R DS WHEN DEHUMIDIFICATION TERMINAL IS USED CUT ON BOARD L...

Страница 16: ...OL SEE FIGURE 19 BCE7S JUMPER AND LINK GUIDE FOR FURTHER DETAILS Figure 17 Control Field Wiring Cooling Application Humidification Control and Second Stage Outdoor Fan Relay Wiring Non Communicating F...

Страница 17: ...n communicating and non communicating control connections and wire run lengths Label Label Function Thermostat R 24VAC i RSbus data high connection i RSbus data low connection C 24VAC command ground O...

Страница 18: ...RV or ERV to ensure indoor blower demand C The C terminal shall interconnect the signal ground of the room thermostat with secondary transformer ground TR and chassis ground GND R The R terminal shall...

Страница 19: ...UT ON H FOR HUMIDIFIER OR ACCESSORY INTERLOCK SMART AUTO SMART AUTO COOLING MODE BLOWER SPEED HIGH SPEED MEDIUM LOW SPEED LOW SPEED 1 2 3 4 MEDIUM HIGH SPEED 1 2 3 4 1 2 3 4 1 2 3 4 COOLING HP MODE HE...

Страница 20: ...al on the thermostat block Configurations are as follows If jumper is installed in SMART Humidification position Default H terminal is active if heat demand is present and indoor blower is running If...

Страница 21: ...and motor runs at 100 until demand is satisfied D Once demand is met motor runs at 50 for 30 seconds E Motor ramps down to stop Display An on board single character LED display see Figure 19 for LED d...

Страница 22: ...andler model size and capacity Blinking P 1 When the correct Unit Sized Code is displayed RELEASE push button Selected code will ash for 10 second period 2 During ten second period HOLD push button un...

Страница 23: ...sensors the alarm will be sent if valid temperature reading is lost Compare outdoor sensor resistance to temperature resistance charts in unit installation instructions Replace sensor pack if necessa...

Страница 24: ...heat Either the pilot relay contacts did not close or the relay coil in the electric heat section did not energize Heat section stage 1 failed Pilot relay contacts did not close or the relay coil in...

Страница 25: ...880 1100 1320 NORM 600 800 1000 1200 600 800 1000 1200 540 720 900 1080 540 720 900 1080 NOTES The effect of static pressure filter and electric heater resistance is included in the air volumes liste...

Страница 26: ...2055 2145 NORM 1425 1625 1805 2005 1425 1625 1805 2005 1205 1375 1555 1725 1205 1375 1555 1725 NOTES The effect of static pressure filter and electric heater resistance is included in the air volumes...

Страница 27: ...and indoor air handler follow thermostat demand BASIC MODE only active on a Y1 thermostat demand Normal Operation 1 On On On Acceptable 24 VAC High 100 Thermostat energizes Y1 and de energizes D on a...

Страница 28: ...when humidity is greater than setpoint Dehumidification demand 2 On On On On Demand 0 VAC High 70 Dehumidification demand ONLY 1 On On On On Demand 0 VAC High 70 Thermostat will keep outdoor unit ene...

Страница 29: ...handler control will automatically de energize higher heat sections Indoor blower will immediately deliver CFM as set by heating mode jumper on air handler control with activation of first electric h...

Страница 30: ...r control to display unit size code letter or number for each air handler model for three seconds Yes No IMPORTANT Field replacement controls may need to be manually configured to validate air handler...

Страница 31: ...t electric heat 22 volt DC relay coils are energizing A If relay coil current is detected within ten seconds air handler control will show a 1 on the single character LED display indicating that the f...

Страница 32: ...indoor blower CFM settings are identical for cooling and heat pump 2 Set Blower Adjust Selection jumper pin 3 Set Cooling Mode Blower Ramping jumper pin Cooling calls All ramping profiles are active H...

Страница 33: ...ir handler control De energize indoor blower per ramping profile No Yes Air handler control on board link must be cut between Y1 and Y2 to allow two stage cooling operation Air Handler Control AHC Ind...

Страница 34: ...s appear then release button To clear error codes stored in memory continue to hold push button while the solid three horizontal bars are displayed Release button when solid is displayed Solid c start...

Страница 35: ...he indoor blower relay energizes The normally open contacts close causing the indoor blower motor to operate The circuit between R and Y is completed closing the circuit to the contactor in the outdoo...

Страница 36: ...rrounding ambient air will affect the inside surface temperature of the cabinet The temperature humidity difference between the inside and outside of the cabinet can cause condensation on the inside o...

Страница 37: ...y pan been provided under the unit with separate drain for units installed above a finished ceiling or in any installation where condensate overflow could cause damage Have ALL unused drain pan ports...

Страница 38: ...ng Mode Return Duct Temperature ___________ THERMOSTAT Adjusted and Programmed Return External Static ______ ______ Total External Static ______ ______ 6 Supply Duct Temperature ___________ Temperatur...

Страница 39: ..._____ Total External Static ______ ______ 6 6 Supply Duct Temperature ___________ Temperature Drop ___________ TEMPERATURE RISE Heating Mode Return Duct Temperature __________ Supply Duct Temperature...

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