Unitary products group C*ED060A Series User manual

TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CAUTIONS, NOTES AND WARNINGS . . . . . . . . . . 3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
A Complete Table of Contents on Followin
g
Pa
g
e
INSTALLATION
INSTRUCTION
SAVE THIS MANUAL
SINGLE PACKAGE
WATER COOLED
AIR CONDITIONERS
EMBASSSY SERIES
MODELS C*ED060A, 090A, 120A, & 180A
035-16734-000 REV A (799) Form 560.20-N1Y

560.20-N1Y 035-16734-000
2Unitar
y
Products Group
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CAUTIONS, NOTES AND WARNINGS . . . . . . . . . . 3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
FOUNDATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CLEARANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
UNCRATNG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
SHIPPING BOLTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
BLOWER ARRANGEMENTS . . . . . . . . . . . . . . . . . . . . .15
SUPPLY AIR BLOWER ADJUSTMENT . . . . . . . . . . . . .15
DUCT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .18
SUPPLY AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . .19
RETURN AIR DUCT FLANGE . . . . . . . . . . . . . . . . . . . .19
INSULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
CONDENSER WATER PIPING . . . . . . . . . . . . . . . . . . .19
PRECAUTIONS AGAINST FREEZING . . . . . . . . . . . . . . . . . .19
DRAIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . .20
WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
POWER WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
LOW VOLTAGE WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
ACCESSORY WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
WATER REGULATING VALVES . . . . . . . . . . . . . . . . . .21
COOLING TOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ADJUSTING WATER REGULATING VALVE . . . . . . . . .24
LIST OF FIGURES
1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . 3
2 UNIT DIMENSIONS - CED060 . . . . . . . . . . . . . 11
3 UNIT DIMENSIONS - CED090 & 120 . . . . . . . . 12
4 UNIT DIMENSIONS - CED180 . . . . . . . . . . . . . 13
5 BLOWER ARRANGE CED060, 090 & 120 . . . . 15
6 BLOWER ARRANGE CED180 #1 . . . . . . . . . . . 15
7 BLOWER ARRANGE CED180 #2, #3, & #4 . . . 15
8 TYPICAL MOTOR MOUNTING ASSEMBLY . . 16
9 PROBE LOCATIONS . . . . . . . . . . . . . . . . . . . . 17
10 CFM CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11 SUPPLY AIR DUCT CONNECTION . . . . . . . . . 18
12 COILS AND WATER CONNECTIONS . . . . . . . 19
13 RECOMMENDED DRAIN PIPING . . . . . . . . . . . 20
14 ELECTRICAL CONTROL BOX . . . . . . . . . . . . . 21
15 PS FIELD WIRING DIAGRAM . . . . . . . . . . . . . . 22
16 CTRL (LOW VOLT) FIELD WIRING DIA. . . . . . 22
17 COOLING TOWER WATER PIPING . . . . . . . . . 24
18 UNIT CONTROL ON WATER FLOW . . . . . . . . 24
19 ALT UNIT CONTROL ON WATER FLOW . . . . 24
LIST OF TABLES
1 APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . 4
2 OPERATING AND SHIPPING WEIGHT . . . . . . . 5
3 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . 6
4 COOLING CAPACITY 80°F TO 90°F . . . . . . . . . 7
5 COOLING CAPACITY 100°F TO 110°F . . . . . . . 8
6 CORRECTION FACTORS ALL MODELS . . . . . 9
7 CONDENSER WATER PRESSURE DROP . . . . 9
8 SUPPLY AIR BLOWER PERFORMANCE . . . . 10
9 MINIMUM CLEARANCES CED060 . . . . . . . . . . 14
10 MINIMUM CLEARANCES CED090 & 120 . . . . 14
11 MINIMUM CLEARANCES CED180 . . . . . . . . . . 14
12 SPLY AIR BLWR MOTOR PULLEY ADJ . . . . . 16
13 TUBE HOLE LOCATIONS . . . . . . . . . . . . . . . . 17
14 CFM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . 17
15 BLOWER MOTOR DRIVE DATA . . . . . . . . . . . 18
16 WATER CONNECTION SIZING . . . . . . . . . . . . 19
17 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . 23

035-16734-000 560.20-N1Y
Unitar
y
Products Group 3
GENERAL
These C2ED Embass
y
units are water-cooled, sin
g
le pack-
a
g
e air conditioners desi
g
ned for vertical application and
indoor installation onl
y
. The unit ma
y
be installed within the
conditioned space or in a utilit
y
room.
Models ED060, ED090 and 120 are desi
g
ned for vertical air-
flow onl
y
and can not be field converted to horizontal airflow.
The ED180 is factor
y
assembled for vertical airflow, but the
blower section ma
y
be field converted for horizontal airflow.
Units ma
y
be installed either with ductwork on suppl
y
and
return, with suppl
y
air plenum and return air
g
rille accessor
y
or a combination of these items.
Units are completel
y
factor
y
assembled, refri
g
erant char
g
ed,
wired, tested and read
y
for installation. Motor and drive are
mounted in the blower section. Units less motor and drive or
with alternate motors and drives are not available.
The units require electrical power, duct connections or ple-
num, condenser water pipin
g
, condensate drain and substan-
tial support at the point of installation.
Water pipin
g
connections and power wirin
g
entrance can be
made from either side of unit. Low volta
g
e entrance on ri
g
ht
side onl
y
.
Drain connections are made on the ri
g
ht side onl
y
for all units
except the ED180, which can be made form either side.
CAUTIONS, NOTES AND WARNINGS
Installer should pa
y
particular attention to the words: NOTE,
CAUTION and WARNING. Notes are intended to clarif
y
or
make the installation easier. Cautions are
g
iven to prevent
equipment dama
g
e. Warnings are
g
iven to alert the installer
that personal injur
y
and/or equipment dama
g
e ma
y
result if
the installation procedure is not handled properl
y
.
INSPECTION
Immediatel
y
upon receivin
g
the unit, it should be inspected
for possible dama
g
e durin
g
transit. If dama
g
e is evident, it
should be noted on the carrier’s frei
g
ht bill. A separate
request for inspection b
y
the carrier’s a
g
ent should be made
in writin
g
.
LIMITATIONS
1. Units are not suitable for brackish or salt water.
2. Refer to Table 1 for recommended condenser water flow
rate and water temperature rise for coolin
g
tower appli-
cation.
3. Excessivel
y
hi
g
h GPM and low water temperature ma
y
result in coil freeze up.
4. A water-re
g
ulatin
g
valve is recommended for cit
y
water
applications; it should be adjusted to maintain a head
pressure of 220 psi
g
and a water temperature rise of
approximatel
y
20°F.
5. Excessivel
y
low GPM and hi
g
h water temperature ma
y
result in H.P. Cutout trip, 325 PSI.
6. Units are not intended for outdoor installation.
FIGURE 1 : PRODUCT NOMENCLATURE
C2DE 09 0 A 2 5
PRODUCT CATEGORY
C = S ingle P ackage Air
C o n d ito n in g U n it
( a te r C o o le d )
NOMINAL COOLING CAPACITY
060 = 5 Tons
090 = 7-1/2 Tons
120 = 10 Tons
180 = 15 Tons
PRODUCT GENERATION
2 = 2nd G eneration
PRODUCT IDENTIFIER
E D = E m bassy F actory
A s s e m b le d U n it w ith
B lo w e r M o to r and D rive
FACTO RY
INSTALLED HEAT
A = N o t A p p lic a b le
VOLTAGE CO DE
06-208/230-1-60
25-208/230-3-60
46-460-3-60

560.20-N1Y 035-16734-000
4Unitar
y
Products Group
7. These units should be installed in accordance with:
a. Re
g
ulations of National Board of Fire Underwriters,
local utilit
y
or other authorities havin
g
jurisdiction.
b. Standards for air conditionin
g
s
y
stems, National Fire
Association Pamphlet # 90.
c. National Warm Air Heatin
g
and Air Conditionin
g
Association Manuals, which ever is applicable.
d. Wirin
g
must conform to provisions of National Elec-
trical Code (NFPE Pamphlet # 70) and local ordi-
nances.
INSTALLATION ACCESSORIES
Refer to the followin
g
instructions for installation of accesso-
ries:
• Form 550.13-N10.1U Electric Heat
• Form 550.13-N10.2U Suppl
y
Air Plenum
• Form 550.13-N10.3U Return Air Grille
• Form 550.12-N10.7U Hot Water Coil and Non-Freeze
Steam Coil
• Form 560.20-N1.5 Water Re
g
ulatin
g
Valve
TABLE 1: APPLICATION DATA
LIMITATION MINIMUM1MAXIMUM1
POWER SUPPLY, VOLTS
208/230-1-60 187 252
208/230-3-60 187 252
460-3-60 432 504
SUPPLY AIR, CFM
C2ED060 1600 2400
C2ED090 2400 3600
C2ED120 3200 4800
C2ED180 4800 7200
AIR TEMPERATURE ENTERING
COOLING COIL °F
Wet Bulb 57 72
Dry Bulb 65 95
CONDENSER WATER, GPM
C2ED060 4 20
C2ED090 6 30
C2ED120 8 40
C2ED180 12 60
CONDENSER WATER-SIDE WORKING PRESSURE, PSIG 2021503
LEAVING CONDENSER WATER TEMPERATURE4, °F 60 115
1. Utilization Range “A” in accordance with ARI Standard 110.
2. The water pressure must be great enough to overcome the pressure drop of the condenser and the condenser water piping.
3. Although the water side is only leak tested for 150psig, the maximum water-side working pressure of the condenser is 450 psig.
Class 150 fittings in the unit’s condenser water piping are good for 300 psig. For 300 psig applications, a sealing material (Lock-
tite or equivalent) must be applied to all threaded connections to assure a leak-tight installation. The water regulating valve acces-
sories are limited to a maximum 150 psig.
4. The limitation for entering condenser water temperature will vary with condenser water GPM.
THIS PRODUCT MUST BE INSTALLED IN
STRICT COMPLIANCE WITH THE ENCLOSED
INSTALLATION INSTRUCTIONS AND ANY
APPLICABLE LOCAL, STATE, AND NATIONAL
CODES INCLUDING BUT NOT LIMITED TO,
BUILDING, ELECTRICAL AND MECHANICAL
CODES.

035-16734-000 560.20-N1Y
Unitar
y
Products Group 5
LOCATION
1. Units ma
y
be located in the conditioned space or in an
adjacent room. Units ma
y
not be located outdoors, and
must be protected from freezin
g
.
2. Units should be installed in an area offerin
g
proper
power and control wirin
g
, condenser water pipin
g
, con-
densate trap and pipin
g
, overflow if required, heatin
g
pip-
in
g
if required, outdoor air duct if required, and suppl
y
and return air.
3. Suppl
y
air ma
y
be ducted or distributed with a plenum.
Return air ma
y
be ducted, unducted or returned throu
g
h
an inlet
g
rille. If the unit is to have an outdoor air intake,
it should be located near and outside wall.
Units should be located for ease of service, with adequate
clearance for compressor access, front and ri
g
ht side, fan
drive access, chan
g
in
g
filters, and heatin
g
coil service if
required. Refer to respective unit dimension detail (Fi
g
ure 2,
3, and 4) for required clearances.
FOUNDATION
1. Units ma
y
be placed on the floor or be elevated on a suit-
able platform.
2. No special foundation or isolation is required for most
applications.
a. Unit incorporates adequate isolation to eliminate
fan, compressor, and condensin
g
section vibration.
Flexible duct is also recommended.
b. It is not necessar
y
to bolt unit to the floor or support-
in
g
structure.
c. Floor or platform must be capable of supportin
g
the
operatin
g
wei
g
ht of the unit. See Table 2 for unit
wei
g
hts.
3. For installations requirin
g
extreme quiet operation, the
followin
g
precautions should be considered:
a. Locate unit outside the conditioned space.
b. Suppl
y
and return air ducts should be used, con-
nected to the unit with asbestos cloth collars, and
lined with sound absorbin
g
material.
c. Support the unit on a separate floor structure form
that of the conditioned space.
d. Place a non-deterioratin
g
sound isolation pad under
the entire unit base.
CLEARANCE
Clearance must be provided for:
1. Air intake and dischar
g
e – with or without ductwork.
2. Condenser water pipin
g
and connections.
3. Electrical power connections.
4. Heatin
g
coil pipin
g
and connections, if required.
5. Trapped condensate drain connection.
6. Maintenance and service access. Recommended mini-
mum clearances for units are shown on the unit dimen-
sion drawin
g
’s Fi
g
ures 2, 3, and 4. These clearances
are based on standard arran
g
ements of units. For non-
standard arran
g
ements, allow clearances that are in line
with the recommended minimum values shown.
RIGGING
1. Lift with slin
g
s under the unit.
2. Use spreader bars across the top of the unit to prevent
crushin
g
the unit frame and panels.
3. Avoid possible surface dama
g
e b
y
NOT removin
g
the
carton or the skids until the unit is at or near its final loca-
tion and soon to be installed.
UNCRATNG
Keep the units in their carton until moved close to point of
installation. Units are mounted on skids and should be
“trucked” to location in a vertical position. Under no circum-
stances should the
y
be “walked” on the corners of the crate.
1. Remove the shippin
g
carton.
2. Remove skid from under the unit.
3. Remove front access panel from condenser section.
This is necessar
y
for access to the electrical box, con-
denser water pipin
g
and the removal of compressor ship-
pin
g
blocks.
FOR WINTER SHUTDOWN, RESIDUAL WATER
MUST BE BLOWN FROM THE CONDENSER IF
THE UNIT IS LOCATED IN AN AREA WHERE
THE AMBIENT TEMPERATURE MAY DROP
BELOW 32°F OR IF THE UNIT HAS AN OUT-
DOOR AIR INTAKE.
TABLE 2: OPERATING AND SHIPPING WEIGHT
(LBS.)
MODEL C2ED 060 090 120 180
SHIPPING WEIGHT 452 755 809 1115
OPERATING WEIGHT 402 690 744 1040

560.20-N1Y 035-16734-000
6Unitar
y
Products Group
TABLE 3: PHYSICAL DATA
DESCRIPTION UNIT MODEL
CED060 CED090 CED120 CED180
COMPRESSOR
(FULLY HERMETIC
Quantity Per Unit
3-3/4 ton - 2 - -
5-Ton 1 - 2 1
10-Ton - - - 11
EVAPORATOR COIL
Rows Deep x Rows Wide 3 x 24 3 x 24 3 x 32 4 x 26
Finned Length - inches 30 46 46 54.5
Face Area - square feet 5.0 7.7 10.2 12.4
Tube (Copper) OD - inches 3/8 3/8 3/8 1/2
Fins (Aluminum) per inch 13 13 13 12
CENTRIFUGAL BLOWER
(FORWARD CURVE)Diameter x Width - inches 10 x 10 15 x 15 15 x 15 18 x 18
MOTORS2Nominal HP Rating 3/4
(1@460-3-60) 1-1/2 2 3
FILTERS
(THROWAWAY)
Quantity per Unit 16” x 25” x 1” 2 4 4 -
20” x 20” x 1” - - - 6
Face Area - square feet 5.6 11.1 11.1 16.7
CONDENSER
(WATER COOLED)
Quantity Per Unit
3-3/4 Ton - 2 - -
5 Ton 1 - 2 3
OPERATING CHARGE
Refrigerant-22, lbs. - oz.
System - 1 5-1 4-9 5-14 12-02
System - 2 - 4-9 5-14 5-4
1. The 10-Ton system is wired for first stage operation.
2. The refer to Table 15 for additional blower motor and drive data.

035-16734-000 560.20-N1Y
Unitar
y
Products Group 7
TABLE 4: COOLING CAPACITY 80°F TO 90°F1
MODEL
CED
AIR ENTERING
COOLING COIL TOTAL
COND.
WATER
GPM
CONDENSER WATER TEMPERATURE, °F
80 90
CFM TEMP. °F TOT.
MBH SENS. MBH Kw2WATER
RANGE
°F
TOT.
MBH SENS. MBH Kw2WATER
RANGE
°FDB WB
060
(1 Phase) 2000
86 72
15
69 45 4.4 11.2 65 44 4.7 10.8
80 67 63 43 4.3 10.4 59 42 4.6 10.0
56 41 57 41 4.2 9.6 54 40 4.5 9.3
68 57 52 40 4.1 8.8 49 39 4.4 8.6
060
(3 Phase) 2000
86 72
15
69 45 4.2 11.1 65 44 4.5 10.7
80 67 63 43 4.1 10.3 59 42 4.4 9.9
74 62 57 41 4.0 9.5 54 40 4.3 9.2
68 57 52 40 3.9 8.7 49 39 4.2 8.5
090 3000
86 72
22.5
102 68 6.2 11.0 97 66 6.6 10.6
80 67 94 65 6.0 10.2 89 63 6.4 9.9
74 62 86 62 5.8 9.4 81 61 6.2 9.1
68 57 77 60 5.7 8.6 73 59 6.1 8.4
120 3000
86 72
30
139 93 8.4 11.2 132 90 9.0 10.8
80 67 128 90 8.2 10.5 121 87 8.8 10.1
74 62 118 87 8.0 9.7 110 84 8.6 9.4
68 57 107 84 7.8 8.9 100 81 8.4 8.6
180 6000
86 72
45
211 146 13.4 11.4 203 140 14.0 11.2
80 67 195 139 13.1 10.6 187 135 13.7 10.4
74 62 175 133 12.8 8.7 168 130 13.5 9.5
68 57 154 127 12.6 8.8 149 125 13.3 8.6
1. These capacities are gross ratings. For net capacities, determine the Kw requirements of the supply air blower motor per Table 8.
Convert kW to MBH per the following equation and deduct this equivalent heat from the gross cooling ratings.
BLOWER MOTOR kW x (3.415 MBH / kW) = Blower Motor Heat (MBH)
2. Compressor kW only. For total unit kW, add the kW requirement of the supply air blower per Table 8.
Nominal Ratin
g

560.20-N1Y 035-16734-000
8Unitar
y
Products Group
TABLE 5: COOLING CAPACITY 100°F TO 110°F1
MODEL
CED
AIR ENTERING
COOLING COIL TOTAL
COND.
WATER
GPM
CONDENSER WATER TEMPERATURE, °F
100 110
CFM TEMP. °F TOT.
MBH SENS. MBH Kw2WATER
RANGE
°F
TOT.
MBH SENS. MBH Kw2WATER
RANGE
°FDB WB
060
(1 Phase) 2000
86 72
15
62 43 5.0 10.5 58 42 5.3 10.1
80 67 56 41 4.9 9.7 53 40 5.2 9.4
56 41 51 39 4.8 9.0 48 38 5.1 8.7
68 57 46 38 4.7 8.3 43 37 5.0 8.0
060
(3 Phase) 2000
86 72
15
62 43 4.8 10.4 58 42 5.1 10.0
80 67 56 41 4.7 9.6 53 40 5.0 9.3
74 62 51 39 4.6 8.9 48 38 4.9 8.6
68 57 46 38 4.5 8.2 43 37 4.8 7.9
090 3000
86 72
22.5
91 63 7.0 10.2 85 60 7.5 9.8
80 67 84 61 6.8 9.5 78 58 7.3 9.1
74 62 76 59 6.6 8.8 71 56 7.1 8.4
68 57 68 57 6.5 8.1 64 55 7.0 7.8
120 3000
86 72
30
124 87 9.6 10.4 116 85 10.3 10.0
80 67 114 84 9.4 9.7 106 81 10.0 9.3
74 62 103 81 9.2 9.0 96 78 9.8 8.6
68 57 93 78 9.0 8.3 86 75 9.6 7.9
180 6000
86 72
45
188 134 14.7 10.6 170 128 15.4 9.9
80 67 175 130 14.4 9.9 158 125 15.1 9.3
74 62 158 126 14.2 9.1 145 122 14.8 8.7
68 57 141 122 14.0 8.4 132 119 14.6 8.1
1. These capacities are gross ratings. For net capacities, determine the Kw requirements of the supply air blower motor per Table 8.
Convert kW to MBH per the following equation and deduct this equivalent heat from the gross cooling ratings.
BLOWER MOTOR kW x (3.415 MBH / kW) = Blower Motor Heat (MBH)
2. Compressor kW only. For total unit kW, add the kW requirement of the supply air blower per Table 8.
Nominal Ratin
g

035-16734-000 560.20-N1Y
Unitar
y
Products Group 9
TABLE 6: CORRECTION FACTORS - ALL MODELS
RATING % CFM % GPM
80 90 100 110 120 50 75 100 125 150
Total Capacity 0.95 0.98 1.00 1.01 1.02 0.90 0.96 1.00 1.03 1.05
Sensible Capacity 0.85 0.94 1.00 1.04 1.07 0.95 0.98 1.00 1.01 1.02
Compressor kW 0.97 0.99 1.00 1.01 1.02 1.10 1.04 1.00 0.97 0.95
TABLE 7: CONDENSER WATER PRESSURE DROP
MODEL CONDENSER
WATER GPM PRESSURE DROP PSI MODEL CONDENSER WATER GPM PRESSURE DROP PSI
CED060 10
15
20
2.0
4.4
8.0 CED120 20
30
40
2.0
4.4
8.0
CED090 15
22.5
30
2.4
3.0
4.2 CED180 30
45
60
2.0
4.4
8.0

560.20-N1Y 035-16734-000
10 Unitar
y
Products Group
TABLE 8: SUPPLY AIR BLOWER PERFORMANCE1
RPM CFM
SP2BHP3kW SP2BHP3kW SP2BHP3kW SP2BHP3kW SP2BHP3kW
CED0604
1600 1800 2000 2200 2400
810 0.45 0.39 0.35 0.32 0.46 0.42 0.18 0.53 0.49 0.02 0.61 0.56 - - -
900 0.64 0.48 0.43 0.53 0.56 0.51 0.40 0.64 0.59 0.25 0.73 0.68 0.10 0.82 0.77
1000 0.87 0.58 0.53 0.77 0.67 0.62 0.65 0.76 0.71 0.51 0.86 0.81 0.37 0.91 0.90
1100 1.12 0.69 0.64 1.03 0.78 0.73 0.92 0.89 0.83 0.79 1.00 0.94 0.66 1.13 1.04
1110 1.15 0.70 0.65 1.06 0.79 0.74 0.95 0.90 0.84 0.82 1.02 0.95 - - -
CED090
2400 2700 3000 3300 3600
655 0.49 0.70 0.66 0.41 0.78 0.72 0.30 0.87 0.82 0.07 0.96 0.90 - - -
700 0.60 0.77 0.73 0.53 0.85 0.80 0.43 0.95 0.89 0.29 1.06 0.99 0.12 1.17 1.09
800 0.92 0.97 0.90 0.85 1.06 0.99 0.77 1.18 1.10 0.65 1.30 1.21 0.49 1.42 1.32
880 1.18 1.11 1.04 1.11 1.24 1.16 1.03 1.37 1.28 0.91 1.50 1.38 0.77 1.64 1.53
900 1.24 1.15 1.07 1.18 1.28 1.19 1.10 1.42 1.32 0.98 1.55 1.43 0.84 1.70 1.57
CED120
3200 3600 4000 4400 4800
700 0.49 1.01 0.94 0.34 1.17 1.09 0.14 1.33 1.24 - - - - - -
800 0.84 1.25 1.16 0.71 1.42 1.32 0.53 1.60 1.48 0.30 1.80 1.64 - - -
900 1.18 1.48 1.38 1.06 1.70 1.57 0.91 1.92 1.75 0.70 2.18 1.99 0.43 2.45 2.24
950 1.37 1.61 1.50 1.26 1.86 1.71 1.11 2.12 1.95 0.91 2.39 2.18 0.65 2.67 2.44
CED180
4800 5400 6000 6600 7200
625 0.55 1.54 1.43 0.40 1.79 1.64 0.22 2.08 1.90 0.01 2.41 2.20 - - -
700 0.84 1.83 1.68 0.70 2.12 1.94 0.54 2.43 2.22 0.36 2.77 2.54 0.12 3.12 2.82
800 1.26 2.38 2.17 1.15 2.70 2.47 1.00 3.03 2.74 0.83 3.37 3.05 0.62 3.75 -
810 1.31 2.44 2.22 1.20 2.74 2.52 1.05 3.09 2.80 0.88 3.44 - - - -
1. Unit resistance is based on a wet evaporator coil and clean filters
2. Available static pressure in IWG to overcome the resistance of the duct system. Refer to Table 15 for additional motor and drive data.
3. Motors can be selected to operate into the service factor because they are located in the moving air stream. If maximum air on temper-
ature is exceeded, a service factor of 1.0 must be used.
4. The CED060A46 has a 1 HP blower motor that can operate 1.15 BHP providing the unit is not equipped with a hot water or steam coil.
RPM ran
g
e for the standard, fac-
tor
y
-mounted drive components Exceeds the BHP limitation of the standard, factor
y
mounted blower motor.

035-16734-000 560.20-N1Y
Unitar
y
Products Group 11
FIGURE 2 : UNIT DIMENSIONS - CED0601
1. See Table 9 for Minimum Clearances on page 14.
SUPPLY
AIR
(O U T )
RETURN
AIR
(IN )
36-1/8
8-1/2 13-1/4
1-23/32 KN O C KO U T
(R em ove only w hen
E le c tric H e a t A c c e s s o ry
is used)
1
3/4
11-1/2
22-3/4
BLO ER M O TOR
AND DRIVE
ACCESS PANEL
(This side only)
FILTER ACCESS PANEL
(This side only)
1-3/8
43-1/8
64-1/2
1-3/16
7/8 O.D. DRAIN CONN.
(M ust be trapped)
1-1/8
7/8 H O LE ITH B U S H IN G
*
CONTROL IRING
(B oth Sides of U nit)
CONDENSER
SECTIO N
2-5/8
2-3/4
3-3/4
9/16
1-7/16
3-1/2
1-1/2
*
Includes flexible sheathing
to route control w iring to
low voltage term inal block
22
2
32
2
1-3/8
ACCESS PANEL TO
COM PRESSOR AND
ELECTRICAL BOX
21-3/8
1
20
DUCT
FLAN G E
2-1/4
11-5/8
1-3/32 KN O C K O U T
PO ER IRING
(B oth Sides of U nit)
1" NPTI ATER O UTLET
1" NPTI ATER INLET
(2" KNO CKO UTS)
(B oth Sides of U nit)
HOT ATER AND STEAM COIL
ACCESSO RIES CAN BE INSTALLED
IN A V E R T IC A L P O S IT IO N B E T E E N
THE UNIT RETURN AIR OPENING
AND THE DUCT FLANGE
3/4
2-5/16
1-3/8
7/8 OD AUXILIARY DRAIN CONN.
(M ust be trapped)
ACC ESSO RIES
ELECTRIC HEATER
Add 13" to U nit H eight hen U sed.
SUPPLY AIR PLENUM
Add 24-3/8" To U nit H eight hen U sed
All dim ensions are in inches. They are
subject to change w ithout notice. C ertified
d im e n s io n s w ill b e p r o v id e d u p o n re q u e s t.

560.20-N1Y 035-16734-000
12 Unitar
y
Products Group
FIGURE 3 : UNIT DIMENSIONS - CED090 & 1201
1. See Table 10 for Minimum Clearances on page 14.
SUPPLY
AIR
(O U T )
RETURN
AIR
(IN )
15-3/8 18-7/8
52-1/4
15
2-1/4
1
5/8
16-1/8 25-7/8
BLO ER M O TOR
AND DRIVE
ACCESS PANEL
(This side only)
51-1/8
72-1/2
7 /8 O D A U X IL IA R Y
DRAIN CONN.
(M ust be trapped)
1-23/32 KN O C K O U T
(R em ove only w hen
Electrical H eat Accessory
is used)
1-1/8 7/8 O.D. DRAIN CONN.
(m ust be trapped)
1-3/16
FILTER ACCESS PANEL
(T his side only)
1-3/8
7 /8 " H O L E IT H B U S H IN G *
CONTROL IRING
(B oth Sides of U nit)
CONDENSER SECTION
1-3/8
2-5/16
1-3/8
ACCESS PANEL TO
COM PRESSORS AND
ELECTRICAL BOX
1-3/32' K N O C KO U T
PO ER SUPPLY
(B oth Sides of U nit)
1-1/4" N P TI A TE R O U TLET
1 -1 /4 " N P T I A T E R IN L E T
(2" KNO CKO UTS)
(B oth Sides of U nit)
1-1/2
2
2-5/16
3-3/16
3-15/16
25-1/8
9/16
1-1/8
3
2-1/16
*Includes flexible sheathing
to route control w iring to
low voltage term inal block.
48
2
21-3/8
1
DUCT
FLAN G E
23
1-5/8
HOT ATER AND STEAM COIL
ACCESSO RIES CAN BE INSTALLED
IN A V E R T IC A L P O S IT IO N B E T E E N
THE UNIT RETURN AIR OPENING
AND THE DUCT FLANGE
All dim ensions are in inches. They are
subject to change w ithout notice. C ertified
d im e n s io n s w ill b e p r o v ided upon request.
ACC ESSO RIES
ELECTRIC HEATER
Add 14-1/4" to U nit H eight hen U sed.
SUPPLY AIR PLENUM
Add 27-1/2" To U nit H eight hen U sed

035-16734-000 560.20-N1Y
Unitar
y
Products Group 13
FIGURE 4 : UNIT DIMENSIONS - CED1801
1. See Table 11 for Minimum Clearances on page 14.
SUPPLY
AIR
(O U T )
RETURN
AIR
(IN )
19-3/8 21-7/8
60-3/4
1-23/32 K N O C KO U T
(R em ove only w hen E lectric
H eat A ccessory is used)
7-1/4
16-1/2
7/8
2-1/8
18-7/8
32-3/8
BLO ER M OTOR
AND DRIVE
ACCESS PANEL
(O n opposite side of
unit O N LY w hen the
blow er section has
been rotated 180
from position show n)
FILTER ACCESS PANEL
Filters can be rem oved
through either side of
the unit. 62-5/8
3-1/8
1-1/4" KN O C K O U T
FOR 7/8 OD DRAIN CON.
(M ust be trapped)
CONDENSER SECTION
2-1/2
2-3/8
27-5/8
21-1/2
7/8" H O LE ITH BU S H IN G *
CONTROL IRING
3-1/8
3/4
9/16
16-1/2
2-3/16
3-7/8
2-3/8 31-5/8
1-5/16
6-1/2
2-3/4
1
4
1-3/32" KN O C K O U T
PO ER IRING
1 -1 /2 " N P T I A T E R IN L E T
(2 -5 /8 " K N O C K O U T S )
(B oth S ides of U nit)
1-1/2" N P TI A TER O U TLE T
ACCESS PANEL TO
COMPRESSORS AND
ELECTRICAL BOX
1-1/2
2-3/16
56-3/8
*Includes flexible sheathing
to ro u te c o n tro l w irin g to
low voltage term inal block.
7/8 OD AUXILIARY DRAIN CONN.
(M ust be trapped)
84-1/8
HOT ATER AND STEAM CO IL
ACCESSO RIES CAN BE INSTALLED
BET EEN THE EVAPO RATOR
SECTION AND THE BLO ER
SECTIO N
All dim ensions are in inches. They are
subject to change w ithout notice. C ertified
d im e n s io n s w ill b e p r o v ided upon request.
ACC ESSO RIES
ELECTRIC HEATER
Add 14-1/4" to U nit H eight hen U sing
10, 16, 26, or 36k H eater. A dd 21-3/4"
To U nit H eight hen U sing 72k H eater.
SUPPLY AIR PLENUM
Add 27" To U nit H eight hen U sed

560.20-N1Y 035-16734-000
14 Unitar
y
Products Group
TABLE 9: MINIMUM CLEARANCES - CED060
LOCATION CLEARANCE LOCATION CLEARANCE
Side w/ RTN Air Opening 24” Side Opposite Piping Conn. 12”
Side w/ SPLY Air Opening 24”1Side w/ Access for PWR & CTRL Wiring -2
Side w/ Piping Conn. 36”3Bottom -4
1. Overall dimension of the unit will vary if an electric heater or a supply air plenum is used
2. Although no clearance is required for service and operation some clearance may be required for routing the power and control wir-
ing.
3. This dimension is required for removal of the coil. Only 26” is required for normal servicing.
4. Allow enough clearance to trap the auxiliary drain line.
TABLE 10: MINIMUM CLEARANCES - CED090 & 120
LOCATION CLEARANCE LOCATION CLEARANCE
Side w/ RTN Air Opening 24” Side Opposite Piping Conn. 12”
Side w/ SPLY Air Opening 24”1Side w/ Access for PWR & CTRL Wiring -2
Side w/ Piping Conn. 52”3Bottom -4
1. Overall dimension of the unit will vary if an electric heater or a supply air plenum is used
2. Although no clearance is required for service and operation some clearance may be required for routing the power and control
wiring.
3. This dimension is required for removal of the coil. Only 26” is required for normal servicing.
4. Allow enough clearance to trap the auxiliary drain line.
TABLE 11: MINIMUM CLEARANCES - CED180
LOCATION CLEARANCE LOCATION CLEARANCE
Side w/ RTN Air Opening 24” Side Opposite Piping Conn. 261”
Side w/ SPLY Air Opening 24”2Bottom -3
Side w/ Piping Conn. 61”4
1. If the coil has to be removed, this dimension is required to loosen screws that secure the coil to the unit frame. This dimension will
also be required for blower motor access if the piping connections are made on the opposite side of the unit.
2. Overall dimension of the unit will vary if an electric heater or a supply air plenum is used
3. Allow enough clearance to trap the auxiliary drain line
4. This dimension is required for removal of the coil. Only 26” is required for normal servicing.

035-16734-000 560.20-N1Y
Unitar
y
Products Group 15
SHIPPING BOLTS
Loosen the compressor shippin
g
bolts and ferrules. Remove
shippin
g
blocks under the compressor(s). Reti
g
hten nuts to
10-15 ft.-lbs.
BLOWER ARRANGEMENTS
Models ED060, 090 and 120 are shipped assembled for verti-
cal suppl
y
air operation onl
y
(See Fi
g
ure 5).
Model ED180 is shipped assembled for vertical suppl
y
air
(see Fi
g
ure 6) operation and can also be field converted to
one of three-(3) alternate air dischar
g
e patterns (See Fi
g
ure
7).Convertin
g
Model ED180 to an alternate air dischar
g
e pat-
tern is accomplished per the followin
g
procedures:
1. Remove the panels from the blower section.
2. Remove Phillips machine screws located inside casin
g
corner an
g
les which hold coil and blower section
to
g
ether.
3. Rotate blower section for the air dischar
g
e pattern
desired.
4. Refasten coil section to blower section with machine
screws removed in Step 2.
5. Before replacin
g
panels, see para
g
raphs on Duct Con-
nection and Drain connections.
6. Replace panels.
SUPPLY AIR BLOWER ADJUSTMENT
The RPM of the suppl
y
air blower will depend on the required
CFM, the unit accessories and the static resistances of both
the suppl
y
and the return air duct s
y
stems. With this informa-
tion, the RPM for suppl
y
air blower can be determined from
the blower performance, Table 8.
Knowin
g
the required blower RPM and the blower motor HP,
the settin
g
(turns open) for the suppl
y
air motor pulle
y
can be
determined form Table 12.
Each motor pulle
y
has:
1. A threaded barrel with two flats (or notched recesses
180 de
g
rees apart.
FIGURE 5 : BLOWER ARRANGEMENT - CED060,
090 & 120
A IR IN
RETURN
A
IR G R ILLE
(NO FILTERS)
NO N-FREEZE STEAM
OR HOT ATER
HEATING COIL
PLAIN PANEL
CO M PRESSO R
SECTIO N
COIL
BLO ER
PLENUM
PLAIN PANEL
PLAIN PANEL
FIGURE 6 : BLOWER ARRANGEMENT - CED180
ARRANGEMENT #1
FIGURE 7 : BLOWER ARRANGEMENTS - CED180
ARRANGEMENTS #2, #3, & #4
A IR IN
PLAIN PANEL
SHO RT PANEL
PLAIN PANEL BLO ER
SECTIO N
NO N-FREEZE STEAM
OR HOT ATER
HEATING COIL
COIL
SECTIO N
CO M PRESSO R
SECTIO N
PLAIN PANEL
RETURN
AIR G R ILLE
(NO FILTERS)
AIR
AIR
ARRANG EM ENT
N O . 4
AIR
)14
ARRANG EM ENT
N O . 3
AIR
AIR
ARRANG EM ENT
N O . 2

560.20-N1Y 035-16734-000
16 Unitar
y
Products Group
2. A movable flan
g
e with one set screw
After the movable flan
g
e has been rotated to the proper num-
ber of “turns open”; the setscrew should be ti
g
htened a
g
ainst
the flat on the barrel to lock the movable flan
g
e in place. If
the pulle
y
includes a lockin
g
collar, the lockin
g
collar must be
loosened to adjust the settin
g
of the movable flan
g
e.
Note the followin
g
:
1. The suppl
y
air CFM must be within the limitations shown
in Table 1.
2. All pulle
y
s can be adjusted in half turn increments.
3. The tension of the belt should be adjusted for a deflec-
tion of 3/16 of an inch per foot of belt span with and
applied force of 2 to 3 pounds. Movin
g
the blower motor
mountin
g
plate makes this adjustment. Refer to Fi
g
ure
8 turnin
g
the adjustment bolt (B) moves the motor
mountin
g
plate up or down.
Two hex nuts (A) have to be loosened to move the
mountin
g
plate and reti
g
hten after the mountin
g
plate
has been moved to the proper position.
4. All pulle
y
s are factor
y
ali
g
ned.
5. All suppl
y
air motor pulle
y
s are factor
y
set at 2 “turns
open”.
After the suppl
y
air blower motor is operatin
g
, adjust the
resistances in both the suppl
y
and the return duct s
y
stems to
balance the suppl
y
and the return duct s
y
stem to balance the
air distribution throu
g
hout the conditioned space. The job
specifications ma
y
required that this balancin
g
be done b
y
someone other than the equipment installer.
To check the suppl
y
air CFM after the initial balancin
g
has
been completed:
1. Drill two 5/16-inch holes in the side panel as shown in
Fi
g
ure 9.
2. Insert at least 8”of 1/4 inch tubin
g
into each of these
holes for sufficient penetration into the airflow on both
sides of the evaporator coil.
NOTE:The tubes must be inserted and held in a position per-
pendicular to the air flow so velocit
y
pressure will not affect
the static pressure readin
g
s. Filters must be removed on the
CED060 to
g
et accurate readin
g
s.
3. Usin
g
an inclined manometer, determine the pressure
drop across a dr
y
evaporator coil. Since the moisture on
an evaporator coil ma
y
var
y
g
reatl
y
, measurin
g
the pres-
sure drop across a wet coil under field conditions would
be inaccurate. To assure a dr
y
coil, The refri
g
eration
s
y
stem should be de-activated while the test is bein
g
run.
4. Knowin
g
the pressure drop across a dr
y
coil, the actual
CFM throu
g
h the unit can be determined from the curve
in Fi
g
ure 10.
If the CFM is above or below the specified value, the suppl
y
air motor pulle
y
ma
y
have to be re-adjusted. After on hour of
TABLE 12: SUPPLY AIR BLOWER MOTOR PULLEY
ADJUSTMENT
TURNS
OPEN1
1. Pulleys can be adjusted in half-turn increments.
BLOWER RPM
DRIVE RPM RANGE AND UNIT SIZE
CED060
810-110
RPM
CED190
655-880
RPM
CED120
700-950
RPM
CED180
625-810
RPM
01110 880 950 810
11050 835 900 773
2990 790 850 736
3930 745 800 699
4870 700 750 662
5810 655 700 625
NEVER LOOSEN THE TWO NUTS (C OF FIG-
URE 8) THIS COULD CAUSE THE MOTOR
MOUNT TO LOOSEN AND BREAK THE BELT.
FIGURE 8 : TYPICAL MOTOR MOUNTING
ASSEMBLY
A
MOTO
R
MOUNT
B
C (DO NOT LOOSEN)
MOTOR

035-16734-000 560.20-N1Y
Unitar
y
Products Group 17
operation, check the belt and pulle
y
s for ti
g
htness and ali
g
n-
ment.
After readin
g
s have been obtained, remove the tubes and
seal up the drilled holes in the side panel. 5/16”dot plu
g
s (P/
N029-12880) are available throu
g
h normal SOURCE ONE
parts orderin
g
procedures.
NOTE:Shut down the refri
g
erant s
y
stem before takin
g
an
y
test measurements to assure a dr
y
evaporator coil.
FAILURE TO PROPERLY ADJUST THE TOTAL
SYSTEM AIR QUANTITY CAN RESULT IN
EXTENSIVE BLOWER DAMAGE.
FIGURE 9 : PROBE LOCATIONS
TABLE 13: TUBE HOLE LOCATIONS
MODEL DIMENSION
ABCD
CED060 9-1/2 2-1/4 19 10-1/4
CED090 3 3 14 12
CED120 3 3 14 12
CED180 7 1-3/4 18 13-3/4
5/16"
HOLE
A
B
C
D
5/16"
HOLE
COIL
SECTIO N
FILTERS
EVAPORATOR
COIL
AIR
IN
FIGURE 10 : CFM CURVE
TABLE 14: CFM RATINGS
MODEL
% OF NOMINAL CFM
80 90 100 110 120
CFM
CED06011600 1800 2000 2200 2400
CED090 2400 2700 3000 3300 3600
CED120 3200 3600 4000 4400 4800
CED180 4800 5400 6000 6600 7200
1. Filter must be removed on CED060 unit only before read-
ings are taken.
0.5
0.4
0.3
0.2
0.1
0.0
0 80 90 100 110 120 130
C U R V E N O . 1 - C E D 1 8 0 U N IT
C U R V E N O . 2 - C E D 0 9 0 & 1 2 0 U N IT
C U R V E N O . 3 - C E D 0 6 0 U N IT
PRESSURE DROP
(IW G )
P E R C E N T N O M IN A L C F M

560.20-N1Y 035-16734-000
18 Unitar
y
Products Group
DUCT CONNECTIONS
All ducts should be made in accordance with all local and/or
National Codes and in line with
g
ood duct installation prac-
tices.
Ductwork should be suspended with flexible han
g
ers. Do not
fasten directl
y
to buildin
g
or structure.
Allow clearance around duct for safet
y
in handlin
g
heater air,
if an
y
.
TABLE 15: BLOWER MOTOR DRIVE DATA
UNIT
MODEL
MOTOR1
BLOWER
RPM
AJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY BELT
HP POWER
SUPPLY
PITCH
DIA.
(In.)
BORE
(In.)
PITCH
DIA.
(In.)
BORE
(In.) DESIG. PITCH
LENGHT
(In.)
CED060
06
25 3/4 208/230-1-60 810-110 2.8-3.8 5/8 6.0 3/4 A32 33.3
46 1 460-3-60 7/8
CED090 25
46 1-1/2 208/230-3-60 460-3-60 655-880 2.8-3.8 7/8 7.5 1 A36 37.3
CED120 25
46 2208/230-3-60
460-3-60 700-950 2.8-3.8 7/8 7.0 1 A36 37.3
CED180 25
46 3 208/230-3-60 625-810 3.4-4.4 7/8 9.5 1 A57 58.3
1. All of these motors are 1750 RPM and have a 56 frame inherent protection and permanently lubricated ball bearings. The 3/4 Hp
motor is split phase and has a resilient base and a 1.25 service factor. All of the 3 phase motors have a solid base and a 1.15 ser-
vice factor.
DO NOT OPERATE A MOTOR ABOVE ITS NOM-
INAL HP RATING WHEN A UNIT IS EQUIPPED
WITH EITHER A HOT WATER OR A STEAM
COIL ACCESSORY.
FIGURE 11 : SUPPLY AIR DUCT CONNECTION
AIR
OUT
NO N-FLAM M ABLE
C O LLA R
FLANGED DUCT
CONNECTION
(F IE L D
FABRICATED)
DUCT
SUPPLY AIR
DUCT FLANGE
BLO W ER G ASKET
(BY INSTALLER)

035-16734-000 560.20-N1Y
Unitar
y
Products Group 19
SUPPLY AIR DUCTS
See Fi
g
ure 11 for su
gg
ested method of connectin
g
suppl
y
air
ductwork.
Duct should be sized no smaller than the duct flan
g
es on the
blower section.
Use flexible fiber
g
lass or plastic cloth collars or other non-
flammable materials at the duct connections to minimize the
transmission of noise and vibration.
RETURN AIR DUCT FLANGE
The inlet duct frame connection is shipped on the front of the
unit. When the return air
g
rille is used, the duct connection
frame is not used. Refer to Fi
g
ure 2, 3 and 4.
NOTE:If return air duct is not used, applicable installation
codes ma
y
limit the unit to installation onl
y
in a sin
g
le stor
y
area.
INSULATION
Insulation should be applied to ductwork where it passes
throu
g
h and unconditioned area durin
g
the coolin
g
season, or
thou
g
h unheated space durin
g
heatin
g
season.
Insulation should include vapor barrier to prevent absorption
of moisture b
y
insulation.
CONDENSER WATER PIPING
1. All internal condenser water pipin
g
in these units are
completel
y
factor
y
assembled.
2. Units are arran
g
ed for pipin
g
connections on the ri
g
ht.
(Same side as electrical.) However, knockouts are also
provided in left end panel for pipin
g
connections if
desired. Suppl
y
and return elbow connections ma
y
be
rotated to provide for left-hand connections. Inlet water
must alwa
y
s enter at the lower connection of the con-
denser (See Fi
g
ure 12).
3. When local water conditions require it, install strainer in
the suppl
y
line to the condenser.
4. It is recommended that a flexible connection be provided
between condenser and suppl
y
and return mains if noise
and vibration transmission could be a problem.
5. Water pipin
g
should include stop valves so that an
y
unit
can be serviced without shuttin
g
down and drainin
g
the
entire s
y
stem. Since the units will be piped in parallel
(not in series), the stop valves ma
y
be used to equalized
the pressure drop throu
g
h ever
y
parallel circuit for even
condenser water distribution.
PRECAUTIONS AGAINST FREEZING
1. When units are in locations subject to freezin
g
tempera-
tures, condenser must be drained durin
g
shut down.
FIGURE 12 : COILS AND WATER CONNECTIONS
(CED090 SHOWN)
TABLE 16: WATER CONNECTION SIZING
INLET & OUTLET WATER CONN.’S
(NPT, FEEM
CED060 1”
CED090 1-1/4”
CED120 1-1/4”
CED180 1-1/2”
WATER MUST BE BLOWN FROM CONDENSER,
AS IT WILL NOT DRAIN COMPLETELY BY
GRAVITY BECAUSE OF THE SPIRAL DESIGN.
A WATER FLOW SWITCH IS RECOMMENDED
ON THE WATER OUTLET CONNECTION
(EXTERNAL TO THE UNIT) TO PREVENT THE
COLLASPE OF THE TUBES INSIDE THE
REFRIGERANT TO WATER HEAT EXCHANGER
DUE TO LACK OF WATER FLOW.
WATER OUTLET
CONDENSERS
WATER INLET

560.20-N1Y 035-16734-000
20 Unitar
y
Products Group
2. Add
g
l
y
col to the condenser water for
y
ear-round opera-
tion.
NOTE:Addin
g
40% b
y
wei
g
ht eth
y
lene
g
l
y
col to the con-
denser water will:
a. Decrease the unit capacit
y
b
y
5%
b. Increase the unit power requirement b
y
8%.
c. Increase the condenser water pressure drop b
y
12%.
DRAIN CONNECTIONS
All drain lines must be trapped and located so the
y
will not be
exposed to freezin
g
temperatures (See Fi
g
ure 13).
Models ED060, 090 and 120 have a 7/8”OD drain line out
the ri
g
ht side of the cabinet. Model ED180 has a 7/8”OD
steel condensate stub at each end of the drain pan. Seal the
cap at the unused end with a suitable mastic. A plastic ell is
provided with clamp for evaporator drain pan connection.
An emer
g
enc
y
drain connection is located in the bottom pan.
Both drain connections must be piped to the draina
g
e s
y
stem
in accordance with local codes. The drain connection from
the upper pan must be trapped and not connected directl
y
into the lower drain unless it is done at a level below the unit.
This is to prevent water from backin
g
up into the lower pan.
If unit drains are connected to a common buildin
g
drain line, it
is recommended that a flexible connection be provided to
prevent possible transmission of vibration to buildin
g
.
REFRIGERATION SYSTEM
1. Completel
y
assembled, evacuated, char
g
ed and leak
tested.
2. Unit is shipped with a full char
g
e of Refri
g
erant-22.
Refer to Ph
y
sical Data (Table 3) for the respective unit
refri
g
erant char
g
es.
3. Refri
g
erant flow controlled b
y
thermo expansion valves.
4. Hi
g
h Pressure Control –Automatic reset t
y
pe.
5. Compressors are hermetic t
y
pe with internal line break
protection, have sprin
g
t
y
pe isolators for mountin
g
and
are equipped with crankcase heaters.
6. Schrader t
y
pe access valves are provided in the suction
and dischar
g
e lines for field use.
7. The inlet joints or the liquid line strainer dr
y
ers are sol-
dered with 95-5 and serve as pressure relief devices.
8. Condensers (tube in tube) are manifold for sin
g
le water
inlet and water outlet connections.
WIRING
Install electrical wirin
g
in accordance with the latest National
Electrical Code (NFPA Standard # 70 and/or local re
g
ula-
tions). The unit must be
g
rounded in accordance with these
codes.
Knockouts are provided in both the left and ri
g
ht side panels
in the condenser section for electrical entr
y
of the power wir-
in
g
. A knockout is provided in the ri
g
ht side panel onl
y
for
low volta
g
e wirin
g
entr
y
. Refer to Fi
g
. 2, 3 or 4 for the desired
entr
y
locations.
POWER WIRING
Three knockouts are provided in electrical control box to
g
ain
access to the power terminal block (See Fi
g
ure 14).
NOTE:It is recommended to use the knockout on the same
side of the control box as power wirin
g
entr
y
into the unit.
However, on the Model CED060, sin
g
le phase onl
y
, the bot-
tom or ri
g
ht side knockout onl
y
is available for access.
Route the power wires into the unit throu
g
h the 1-3/32”
knockout provided and into the control box.
Connect power wires to terminal block 1TB in the control box
located near front ri
g
ht end of unit.
LOW VOLTAGE WIRING
Route the control wires into the unit throu
g
h the 7/8”knockout
provided in the unit ri
g
ht side panel. Run the wires throu
g
h
sheathin
g
material provided alon
g
the back of the control box
for isolation from power wirin
g
existin
g
rear of control box.
Connect wires to terminal block 4TB located on left side of
control box (See Fi
g
ure 14).
NOTE:Refer to wirin
g
dia
g
ram inside control box cover for
proper connections.
FIGURE 13 : RECOMMENDED DRAIN PIPING
EM ERG ENCY
DRAIN
TRAP
2 " M IN .
(TYP.)
CONDENSATE
DRAIN