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Number One |
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AirConditbning |
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’.', wv V.*.'. .'.W f ^ <‘‘^ |
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M^er |
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■rt'.'rt'.v»v.'iV.'rt'.'.virtS'i'.'wC\"<ViVi'>»»%’iVi'i'»'*>..L»^r.:.riro:i'.^: |
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^^2 Division of |
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Carrier Corporation |
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Carrier Parkway • Syracus N Y 13221 |
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Single-Package Cooling Units |
SAFETY CONSIDERATIONS
The 50BJ,BK Single-Package Cooling Units are designed to provide safe and reliable service when operated within design specifications. However, due to system pressures, electrical
components |
and equipment |
location, some |
aspects of |
installation, start-up |
and servicing |
of this equipment can be hazardous. |
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Only trained, qualified installers and service mechanics should install, start up and service this equipment.
When working |
on this |
equipment, |
observe |
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all precautions on |
tags or |
labels attached |
to |
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the unit, safety notes in the |
literature |
and |
any |
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other safety precautions that apply. |
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•Follow all safety codes.
•Wear safety glasses and work gloves.
•Use care in handling, rigging and placing bulky equipment.
A DANGER
NEVER reach into unit while fan is running. LOCK OPEN AND TAG fan motor power
disconnect |
before |
working |
on |
a |
fan. Remove |
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the |
fuses |
and take them with |
you |
after |
noting |
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this on tag. |
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A WARNING |
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CHECK |
assembly and component weights to |
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be |
sure |
rigging |
equipment |
can |
handle |
them |
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safely. |
Note |
also |
any |
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specific |
rigging |
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instructions. |
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WHEN STEAM CLEANING COILS, be sure area is clear of personnel.
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CONTENTS |
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Page |
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SAFETY CONSIDERATIONS ....................................... |
1 |
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# |
INSTALLATION ............................................................. |
1-13 |
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General .............................................................................. |
1 |
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Step 1 |
— Receive and Inspect Unit ........................... |
2 |
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Step 2 |
— Protect Unit From Damage ... |
2 |
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Step 3 — Provide Unit Support .................................. |
2 |
Step 4 — Rig and Place Unit with |
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Accessories ........................................................... |
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2 |
Step 5 — Position Fan Section As |
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Desired .................................................................. |
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2 |
Step 6 — Install Fan Motor ...................................... |
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5 |
Step 7 — Route Fan Motor Wire ............................. |
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6 |
Step 8 — Align Fan Shaft and |
Wheel______ 6 |
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Step 9 — Install Field-Fabricated |
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Ductwork ............................................................... |
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8 |
Step 10 — Check Return Air Filters ....................... |
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9 |
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Step 11 — Check Compressor Spring |
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Mounts ................................................................... |
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9 |
Step 12 — Make Condenser |
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Connections.......................................................... |
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9 |
Step 13 — Install Unit Drain Line .......................... |
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11 |
Step 14 — Make Electrical |
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Connections....................................................... |
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12 |
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START-UP ............................................................ |
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14,15 |
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General ..................................................................... |
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14 |
Prior to Unit Start .................................................... |
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14 |
Control Sequence Checkout .................................. |
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14 |
SERVICE ............................................................... |
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15-17 |
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Fan Rotation ............................................................ |
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15 |
Indoor-Air Fan Adjustment................................... |
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15 |
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Lubrication .............................................................. |
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16 |
Return-Air Filters .................................................... |
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16 |
Condensate Drains ................................................. |
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16 |
Evaporator Coil...................................................... |
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17 |
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Water-Cooled Condenser(s) .................................. |
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17 |
Air-Cooled Condensers .......................................... |
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Sight Glasses .......................................................... |
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17 |
Charging the System .............................................. |
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17 |
Indoor-Air Fan Motor Removal .............................. |
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17 |
Pressure Relief Devices ......................................... |
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17 |
Crankcase Heaters................................................. |
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17 |
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High and Low Pressure Switches........................ |
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17 |
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Time Guard® Control Circuit |
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17 |
CONTROL SEQUENCE ........................................... |
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18 |
INSTALLATION |
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General — The 50BJ water-cooled condenser type |
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units and the 50BK condenserless units are single |
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package, vertical air conditioning units designed |
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specifically for application with 35B |
Modubox |
and |
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37A Moduline® variable volume |
air |
terminals. |
For |
air terminal installation and service refer to the |
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separate 35B and 37A installation booklets. |
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© Carrier Corporation 1983 |
Form 50BJ,BK-4SI |
Sizes |
50BJ,BK016 |
and unite are |
shipped |
with all |
components |
assembled, piped and |
wired. |
Sizes 50BJ,BK028 and 034 are shipped as follows: |
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1.Base unit — containing evaporator coil unit, compressors and condensers (50BJ unit only).
2.Fan section.
3.Fan motor and drive.
Sizes 50BJ,BK044,054 and 064 are shipped with all components assembled, piped and wired.
Check unit against shipping order. Inspect care fully for concealed shipping damage. If shipment is damaged or incomplete, file claim with transporta tion company and advise Carrier Corporation immediately.
To maintain warranty, protect unit against ad verse weather, theft or vandalism on jobsite.
Refer to Fig. 1 — Unit Dimensions, and Table 1 — Unit Physical Data for unit size and weight. Floor unit loading should be adequate to support unit.
Collect all unit parts together and move them to actual installation site. Provide space around unit for service, filter access and overhead clearance as indicated in Fig. 1.
Move and store unit in upright position. Do not
remove |
shipping package or skids until unit is at |
final |
position. Follow rigging label instructions |
to prevent cabinet damage during unit positioning. |
DO NOT USE CHAINS. Raise base skid on blocks
and |
remove bolts. Unbolt fan section |
from |
skid |
(028 and 034 units only). |
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If |
any 39E accessories (eg. filters) are |
to be |
used |
on 50BJ,BK044-064 units, refer to latest 39E
Installation |
Instructions. |
The |
50BJ,BK044-064 |
units do not |
contain installed |
filters |
or racks. Bolts |
to secure filter rack are shipped secured to base unit compressor basepan.
Units as shipped are adequately dampened against vibration. If additional dampening is de sired, place sponge rubber, rubber mat or fiberglass roof insulation between floor and base of unit or install vibration isolators.
UNIT SIZES 50BJ,BK0I6 and 024 are shipped for vertical discharge. To set up these units for topmounted horizontal discharge, accessory filler panels must be field installed (see Fig. 1).
To set up unit sizes 50BJ,BK016 and 024 for back-mounted horizontal discharge (Fig. 1), pro ceed as follows:
1.Remove:
a.rear fan-section panel.
b.upper rear coil-section panel.
c.flexible conduit and wires from motor.
d.corner bolts holding fan section to coil section.
2.Remove fan section and rotate it 180° lengthwise so that motor is on left side of unit.
3.Place fan section on rear of coil section and refasten.
4.Replace motor wire and conduit.
5.Adjust the following items per Installation Step 8:
a.Shaft alignment.
b.Fan wheel position.
c.Pulleys.
d.Fan belt.
6.Replace panels as follows:
a.Upper rear coil-section panel on top of coil section and fasten.
b.Rear fan-section panel on top of fan section and fasten.
UNIT SIZES 50BJ,BK028 AND 034 are shipped in sections as noted previously. They can be field assembled for either vertical or horizontal discharge.
NOTE: Fan section panels may be removed for easier lifting and to facilitate motor installation.
To set up sizes 50BJ,BK028 and 034 units for horizontal discharge (Fig. 2), proceed as follows:
1.Remove:
a.Upper rear and end panels of coil section.
b.End panels on fan section.
c.Fasteners holding lower rear edge of fan panel.
2.Eift and position fan section on rear of coil section (Fig. 2). Secure with fasteners provided.
3.Install the following per Installation Step 6:
a.Motor mounting frame angles.
b.Motor on plate assembly.
e. Motor-plate assembly on frame angles.
d.Balance of drive package components.
4.Adjust the following per Installation Step 8:
a.Shaft alignment.
b.Fan wheel position.
c.Pulleys.
d.Fan belts.
5.Replace panels as follows:
a.Rear coil section panel on top of coil section. Rear holes will overlap fan section top panel.
Fasten using hole vacated in step Ic (see Fig. 2).
b. All end panels.
-> Table 1 — Unit P
MODEL50 |
BJ |
BK |
BJ |
BK |
BJ |
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016 |
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024 |
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028 |
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OPERATING WEIGHT (lbs) (Note 1) |
1420 |
1225 |
1900 |
1470 |
2500 |
23 |
OPERATING CHARGE (lbs) |
24 |
15 |
17 |
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System 1 |
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24 |
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System 2 |
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17 |
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17 |
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COMPRESSOR — TYPE 06 |
DC337 1 DC537 |
DC724 1 DC824 |
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System 1 |
DC337 j DC |
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System 2 |
4 |
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DA724 1 DA824 |
DA724 j DA |
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No. of Unloading Cylinders |
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4 |
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4 |
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No. of Capacity Steps |
3 |
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6 |
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6 |
HPS Setting (psig) |
280 j376 |
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280 1 376 |
280 1 3 |
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LPS Setting (psig) |
27 |
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27 |
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27 |
CONDENSER (BJ Only) |
1 SC |
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2 SC |
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No. ...Type |
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2 SC |
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Max. Working Pressure (psig) |
550 |
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150 (Note 2) |
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550 |
Connection Size - (in.) |
(1)2 FPT |
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(1)2 5 FPT |
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Water Inlet |
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15 + 2 FPT |
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Water Outlet |
(1)2 FPT |
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(1)2 5 FPT |
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15 + 2 FPT |
CONDENSER (BKOnly) |
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Connection Size - (in.) |
% ODM |
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(2)5/8 ODM |
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Liquid |
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(2)% ODM |
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Discharge |
1У8 ODM |
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(2)У8 ODM |
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1У8 ODM |
CONDENSATE CONNECTION |
1 FPT |
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1 FPT |
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Condensate Drain |
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1У4 MPT |
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INDOOR FAN (Note 3) |
2 |
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2 |
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A |
Number |
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2 |
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Size (in.) |
15x11 |
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15x11 |
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18x18 |
Nominal Cfm |
6,000 |
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8,000 |
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10,000 |
Maximum Allowable Rpm |
1200 |
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1200 |
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1100 |
No of Belts...Fan Pulley PD (in.) (Note 4) |
1 90 |
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2 90 |
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2 124 |
Fan Shaft Diameter - (in.) |
1^^ |
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Р/б |
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V ' A e |
Horsepower |
3 182T |
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Standard...Frame Size |
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5 .184T |
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7 5 213T |
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Motor Pulley A Diameter |
4 5-5 5 |
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4 6-5 6 |
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5 6 |
Motor Pulley B Diameter |
— |
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6 5 |
Motor Efficiency (%) |
79 |
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84 |
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84 |
Motor Shaft Diameter (in.) |
1У8 |
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1У8 |
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1% |
Center To Center (standard and horizontal) |
8 8-11 1 |
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8 8-11 1 |
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29 8-33 3 |
Center To Center (alternate top discharge) |
— |
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— |
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Fan Speed Range (Rpm) |
875-1069 |
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Pulley A |
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894-1089 |
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925 |
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Pulley B |
5 184T |
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— |
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1073 |
Alternate...Frame Size |
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7 5.213T |
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10 215T |
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Motor Pulley A Diameter |
— |
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— |
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Motor Pulley B Diameter |
— |
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— |
Fan Speed Range (Rpm) |
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Pulley A |
___ |
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Pulley B |
— |
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— |
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INDOOR COIL |
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No of Rows... Fins/in. |
3 110 |
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4 110 |
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4 90 |
Total Face Area (sq ft) |
16 3 |
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17 4 |
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21 9 |
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RETURN AIR FILTERS |
3 16x25x2 |
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3. 16x25x2 |
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6. 25x20x2 |
No. . .Size (in.) |
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3 20x25x2 |
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3 20x25x2 |
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2 16x20x2 |
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Cfm — Cubic Feet Per Minute ODM — |
Outside Diameter Male |
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Rpm — Revolutions Per Minute NO |
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FPT — Female Pipe Thread ODS — |
Outside Diameter Solder |
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SC — Shell and Coil |
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1 1 |
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Hp — Horsepower PD — |
Pitch Diameter |
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TT — Tube-in-Tube |
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MPT — Male Pipe Thread PDR — |
Pitch Diameter Range |
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1 |
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2. |
t
- Unit Physical Data
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BK |
BJ |
BK |
BJ |
BK |
BJ |
BK |
^ BJ_______ |
BK |
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028 |
034 |
044 |
054 |
064 |
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2335 |
2610 |
2440 |
3660 |
3155 |
2888 |
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3298 |
4030 |
3305 |
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Refrigerant 22 |
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15 |
24 1 15 |
30 |
18 |
45 |
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18 |
40 |
18 |
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12 |
24 |
15 |
30 |
18 |
35 |
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18 |
40 |
18 |
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c |
lerviceable Hermetic, 1750 Rpn |
1 |
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DC537 |
DC337 1 DC537 |
E2150 |
Е2250 |
E7265 |
Е7265 |
E7175 |
Е7275 |
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DA824 |
DA337 |
DA537 |
EA150 |
ЕА250 |
EA150 |
ЕА250 |
EF175 |
EF275 |
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4 |
4 |
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2 |
1\ |
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4 |
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e |
4 |
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e |
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376 |
280 |
376 |
395 |
395 |
395 |
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27 |
27 |
27 |
27 |
27 |
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2 |
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SC |
2 |
SC |
2 |
TT |
2 |
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TT |
2 |
TT |
550 |
550 |
400 |
400 |
400 |
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5 + 2 FPT |
(2)2 |
FPT |
(2) 2Ув |
ODS |
(2) 2Ув |
ODS |
(2) 2Ув |
ODS |
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5 + 2 FPT |
(2)2 |
FPT |
(1)ЗУв |
ODS |
(1)ЗУв |
ODS |
(1)ЗУв |
ODS |
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Size (in ) Type |
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)Ув |
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ODM |
(2) Ув ODM |
(2) Ув |
ODS |
(2) Ув |
ODS |
(2) Ув |
ODS |
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Ув |
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ODM |
(2) 1 Ув |
ODM |
(2) 1 Ув |
ODS |
(2)1з/в |
ODS |
(2) 1Ув |
ODS |
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Size (in ) Type |
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P/4 |
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MPT |
1У4 |
MPT |
1У2 |
FPT |
1У2 |
FPT |
1У2 |
FPT |
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Adjustable, Belt-Driven Centrifugal; 1750 Rpm Motor |
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2 |
2 |
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2 |
2 |
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1 8 x 1 8 |
1 8 x 1 8 |
20 X10 |
20 X 18 |
20 X18 |
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10,000 |
12,000 |
16,000 |
20,000 |
24,000 |
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1100 |
1100 |
1200 |
1200 |
1200 |
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2 12 4 |
2 11 0 |
2 187 |
2 18 7 |
2 18 7 |
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I'Me |
VVu |
1'Me |
^"Ae |
1"4б |
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' 5 213T |
7 5 213T |
15 |
254T |
20 264T |
25 284T |
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5 6 |
5 6 |
9 0 |
9 8 |
9 8 |
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6 5 |
6 5 |
10 3 |
10 9 |
10 9 |
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84 |
84 |
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85 |
87 |
89 |
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1 % |
1 % |
1% |
1% |
1% |
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>9 8-33 3 |
29 8-33 3 |
17 9-21 1 |
17 9-21 1 |
17 0-20 4 |
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18 4-22 0 |
18.4-22.0 |
17 6-21 5 |
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925 |
925 |
840 |
915 |
922 |
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1073 |
1073 |
961 |
1023 |
1032 |
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10 215T |
10 215T |
20 264T |
25 284T |
30 286T |
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10 9 |
10 9 |
10 9 |
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11 8 |
11 8 |
11 8 |
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1023 |
1032 |
1029 |
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1107 |
1117 |
1114 |
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Copper Tubes, Aluminum Plate Fins |
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4 90 |
4 90 |
3 15 |
4 15 |
4 15 |
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21 9 |
26 2 |
37 5 |
37 5 |
37 5 |
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Factory Supplied — Throwaway |
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25x20x2 |
6 25x20x2 |
None |
None |
None |
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16x20x2 |
2 16x20x2 |
(See Note 5) |
(See Note 5) |
(See Note 5) |
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NOTES
1 Operating charge for 50BK units does not include charge for matching air-cooled condenser or refrigerant connecting piping All 50BK units are shipped with a holding charge Operating charge values are approximate
2 Condenser working pressure is 550 psig if factory installed, dresser adapters are removed and field-fabricated manifold is installed
Motors and drives |
other than those furnished with units |
016-034 must be |
purchased locally Installation may require |
field modification |
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Fan motor pulleys on 50BJ,BK028,034,044,054,064 are fixed pitch type The smaller of the 2 pulleys is factory installed Refer to 39E Series literature (size 39E32) for accessory information
OPTIONAL TOP HORIZONTAL DISCHARGE
NOTES:
1Certified dimension drawings available on request
2Water and refrigerant connections located on right side of unit.
UNITS 50BJ,BK028 AND 034
*For optional top-mounted horizontal discharge, use accessory filler panel package as shown
DIMENSIONS (ft-in.)
UNIT |
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016 |
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024 |
028 j034 |
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50BJ.BK |
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A |
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6 |
-8 |
7- 9V4 |
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B |
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2-4 |
2-11V4 |
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C |
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6-10'/2 |
8- OVe |
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D |
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2-0 |
2-0 |
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E |
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3-0 |
3-0 |
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F |
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1- |
3% |
1- 8VB |
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G |
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1- |
2% |
1- 8% |
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H |
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1- |
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4V4 |
1- 7Vs |
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UNIT 1 |
016 1 024 |
028 1 034 |
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50BJ.BK 1 |
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J |
0-1% |
0-2% |
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K |
2-0 |
1-4 |
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L |
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— |
3-2V4 |
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M 1 |
1-8 |
2-1 Vs |
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IM j |
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— |
7-41/4 |
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p |
4- 4% |
5-41/8 |
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Q |
4-11'/2 |
5-71/4 |
ACCESS AREA
AIRFLOW
0
NOTES:
1Certified dimension drawings available on request
2Water and refrigerant connections for unit sizes 50BJ,BK044 thru 064 are located on right side of unit See Fig 12 for connection details
3Filters are not supplied with base unit. All models are directly compatible with 39E (size 32) air
handling unit components Refer to 39E literature for physical data for accessories
UNITS 50BJ,BK004, 054, AND 064
Fig. 1 — Unit Dimensions
ve
2.
3.
4.
5.
6.
4
To set up sizes 50BJ,BK028 and 034 units for vertical discharge (Fig. 2):
1.Remove:
a.Front, rear and end panels of fan section.
b.Upper-rear and end panels of coil section.
c.Filters from coil section.
d.Fasteners holding filter frame top. Push out frame away from coil section frame.
2. |
Lift up and position fan |
section |
on coil section |
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(Fig. 2). |
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3. |
Fasten fan-section frame |
to coil-section frame |
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|
with fasteners provided; |
then |
reposition and |
refasten the filter frame moved in step Id.
4.Install the following per Installation Step 6:
a.Motor mounting frame angles.
b.Motor on motor-plate assembly.
c.Motor-plate assembly on frame angles.
d.Balance of drive package components.
5.Adjust the following per Installation Step 8:
a.Fan wheel alignment.
b.Shaft alignment.
c.Pulleys.
d.Fan belts.
6.Replace panels as follows:
a.Rear coil-section panels, front and rear fansection panels.
b.All end panels.
Unit sizes 50BJ,BK044,054 and 064 are shipped with vertical discharge as standard. Other fan posi tions are available as a factory-installed option.
Step 6 — Install Fan Motor. Unit 50BJ,BK028 and 034 only. (All other units have factory-installed motors.) Install items after fan section frame has been placed in position on coil section.
NOTE: Place plywood over evaporator coil to prevent damage while installing motor and mounts.
To install motor:
1.Fasten motor mounting angle bracket to fan
section. |
Use |
Fig. |
2 or 3 |
for position |
reference |
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and Fig. 4 for assembly |
guidance. |
Be |
sure that |
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lips of angle brackets are around |
fan |
section |
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frame |
and |
that |
slots for |
motor mounting |
plate |
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face each other. |
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2. Position motor |
on motor plate (Fig. 5) and |
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fasten with fasteners provided. |
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3. Lift motor-plate assembly and slide into motor |
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mounting angles as shown in Fig. 4. Plate fits in |
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angle |
slots. |
On |
vertical |
mounts, |
the |
motor |
mounting assembly can be lowered to bottom of |
t |
|
motor support channels. |
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|
4. Assemble and install motor adjusting screws as shown in Fig. 6. Drive roll pins into screws to prevent the screws from backing out during motor position adjustment.