CARRIER Package Units(both Units Combined) Manual L0606347
User Manual: CARRIER CARRIER Package Units(both units combined) Manual CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides
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50TM016-028
Single-Package Rooftop Units
Electric Cooling with Electric Heat Option
Installation, Start-Up and
Service Instructions
CONTENTS
SAFETY
CONSIDERATIONS
.........................
INSTALLATION
..................................
Step 1 -- Provide Unit Support ......................
• ROOF CURB
• ALTERNATE UNIT SUPPORT
Step 2 -- Rig and Place Unit .........................
• POSITIONING
• ROOF MOUNT
Step 3 -- Field Fabricate Ductwork ..................
Step 4 -- Make Unit Duct Connections
..............
Step 5 -- Trap Condensate
Drain ....................
Step 6 -- Make Electrical Connections
.............
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
• OPTIONALNON-FUSED
DISCONNECT
• OPTIONAL CONVENIENCE
OUTLET
Step 7 -- Make Outdoor-Air Inlet
Adjustments ........................................
• MANUAL OUTDOOR-AIR
DAMPER
Step 8 -- Install Outdoor-Air Hood ..................
Step 9 -- Install All Accessories
....................
• MOTORMASTER®
I CONTROL INSTALLATION
• MOTORMASTER
V CONTROL INSTALLATION
Step 10 -- Adjust Factory-Installed
Options ........
• PREMIERLINK IMCONTROL
• ENTHALPY SWITCH/RECEIVER
• OUTDOOR ENTHALPY CONTROL
• DIFFERENTIAL
ENTHALPY CONTROL
• ENTHALPY SENSORS AND CONTROL
• OPTIONAL ECONOMI$ERIV
AND ECONOMI$ER2
• ECONOMI$ERIV
STANDARD SENSORS
• ECONOMI$ERIV
CONTROL MODES
Step 11 --Install
Humidistat for
Optional MoistureMi$er TM Package ..............
START-UP .......................................
SERVICE ........................................
TROUBLESHOOTING
............................
INDEX ..............................................
START-UP CHECKLIST
..........................
SAFETY
Page
1
1-29
1
4
9
9
9
10
13
13
14
Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filtel.s. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for ;dl brazing operations.
Before performing service or maintenance
operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
limits are exceeded, the unit will automatically
lock the
compressor out of operation. Manual reset will be required
I IMPORTANT:
Units
have
high
ambient
operating
limits. If
to restart the compressor:
INSTALLATION
16
28
30-36
37-42
43-45
46
CL-I
Step 1 -- Provide
Unit Support
ROOF CURB -- Asselnble and install accessory roof curb or
horizontal a&tpter roof curb in accordance with instructions
shipped with the curb or horizontal adapter Accessory roof
curb and horizontal adapter roof curb and information required
to field fabricate a roof curb or horizontal adapter roof curb are
shown in Fig. IA-2. Install insulation, cant strips, roofing, and
counter flashing as shown. Ductwork can be secured to roof
curb before unit is set in place.
IMPORTANT: The gasketing of the unit to the roof curb or
adapter roof curb is critical for a leak-proof seal. Install
gasket supplied with the roof curb or adapter roof curb as
shown in Fig. IA and lB. hnpropefly applied gasket can
result in air leaks and poor unit performance.
CONSIDERATIONS
Installation and servicing air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install,
repair, or service air-conditioning equipment.
Manufacturer
reserves the right to discontinue, or change at any time, specifications
Catalog No. 04-53500009-01
Printed in U.S.A,
or designs without notice and without incurring obligations.
Form 5OTM-4SI
Pg 1
4-06
Replaces:
50TM-3SI
I
I
_K
o
_EF
sc_
_I
5
ON
CR7
CU/BO!OAO0
/.i/2""
Z7!7
_1 !kbi
2-
PLA\
_
V[EW
01:
ROOf:
CURB
....
T *,, o cN
STANDARD14.
HIGHCURB
{305}
c,_rr
,so AO
2 o uNf
o0,
C
bgB('zO_
2
".
'_ECX'/N
I'G
{"
",/
[s o,
J
INBTDL L DTION
_r
_.....
lIE IU _N vkl/b
J
C
INS
All
(0'
:_
v
RE
i
'
BULB
i
*JE
(REF
RN
=
ROOF CUR[
ACC[ _,SOR'
]5 71[>P[D
D[S_
[f_{_LED.
INSULATED
PDNELS_
I _ THICK
NEOPRENE
COATED
i¸¸I/2
LB DENSITY
I}IMFNS[ONS
IN
( } ARE /N _1ill ]HETERS.
c::_
{}IRE(}I
{Of,, OF AiR
iLOt_
ROOFCURB_
/6 GA.
(VA03
$6)
91L.
A 90
DEGREE
ELBOW MUST BE INSTALLED
ON THE SUPPLY
DUCT
WORK
BELOW
THE UNIT
OIBCHARBE
FOR UNITB
EQUIPPED
WITH
,
ELECTRIC
HEATERS.
\OE:
T)
PR:V{
ATIOq
S i>P
....
NOTE
i.
P.
3.
4
5.
B.
\T
UP
;C
ON,
CURB
,
I{
IN
I#ZAR}
E
"c_
DR/,IN
,,q
T CAI
.....................
0/v
"N
O
B[
i
E" 2 3/ 6"
(i885)
i
SUPPLY
OPEhiNG)
_
:r
PAN
N
i/*r......
IE
*
NDOOR
1TCqE{)
{
#5
WtOWii.
ONOTN{ ER J
ANO
i
COM RFS{ (}R i
75)
i
i
].......
A
A
'
.................
]
I
................
7
/
i
G'
I/ 4_ _
_
i
3 I'IENI]ONS
(310)
Ub, l
3/4"
/
,
NSULA[{
PAN[L
:OR
UPPIY
AND RETLRN
(CRRFCUR_O12AO0
/
rchet}
-o,i
l {7\E{
odg
iNG
of
mnf
0
L o
_AI °'c
*_),-
o,'toL,
!I[}E
ONLY)
I/4 ° I
(SUPPL
($I}
TABI
O"
or/d
(_78)
•
NOH.
/4<"
X 4_ \
(32)
X (102)
IYP<
/- P_C9
(degree
{£O
GASKET
]Tk
CURB)
E
\_
FIELO
i
(44)
OUOT
SUI>I>I /E}
......
/ (IANJ
!(F
! E_9
....O" 3"
(76)
R]GD
(FEID
Fig. 1A
i
Roof Curb Details
i
50TM016-025
NSUL AT[ON
SLRPL
B)
$i_1
)
SUPPL ] ED)
:'
ROOFCURB
ACCESSORY
I CURB I
IHEIGHT]
DESCRIPTION
i
..........F'--I
d
CR,,CUROO1,"
ROD,
H
AO0
co,o
IOH]
__._
,,
m
a_i,
I
DIMENSIONS
2 1/41_
(886}
!IN
RF
SUPPLY
OR NIRB
_
1
ii
ii
13/ _,,i
INSULA-
_<3;D:
5 1/16
(226_)
O"
I
ED _ANE
/
f
i
I
i
B
DEC. IN.
.28
.43
TOLERANCES:
TO HORIZONTAL
•
i
i
{DEGREES AND INCHES1
A
UNIT DEC. IN.
ALL
.28
.45
MAX CURB LEVELING
FROM EDGE OF UNIT
I
i
_Ui_pLV
L3/161
OP
N_'[x,G
INSULATED
i (31o):
C
Ui_B
ii
l
1
7 i3/6"
(504)
I
PANEL
CON_ RSATE DRAN
I
I
I
t RE IURN
i
i CURB
OPENI
G
8J
I
(GAS KEP
NTRY ]
S AREA
CLEAR
FOR
GAS IRFD
I))R
F
:
I
ii_D79}
PLAN VIEW OF
ROOR CUR8
NOTES:
,..,J
1,
RGOFCURB
2.
SIWENSIONS
3.
[_DIRECTION
4,
ROOF
5.
TO PREVENT
6.
OF THE INOOOR
SECTION.
UNIT CAN ONLY
BE PITCHES
AS SHOWN,
INSULATED
PANELS:
T" THICN
NEOPRENE
COATED
I-T/2 LB DENSITY.
7,
ACCESSORY
IN
(I
IS
SA,
IS
ARE
OF
CURS:
OISASSEMBLED.
SHIPPES
IN
:
(132/
_--OUTLiN[
OF
UNIT
NILLIWETENS.
AIRFLOW,
(VAO3-5S}
THE HAZARD
OF
STEEL.
STAGNANT
A 9_
ELBOW
MUST BE INSTALLED
THE UNIT
DISCHARGE
FOR UNITS
WATER
ON THE
[OUIPPES
BUILD-UP
SUPPLY
WITH
IN
THE
DRAIN
PAN
ATTACH
DUCT WORK
T i
(SUPPLIED
JRTTS
WITH
COUNTER
(FIELD
DUCT WORE
BELOW
ELECTRIC
HEATERS,
FLASH( NS
SUPPLIEOI
NOOF I NG
FIELD
----_\
"
SUPP Dt]C_T-LIEU
_
IELD
TOP ONLY
_
D
12
F_'"T'S'u"
150'1)
F
RETURN
SUPPLY
_EIBHI
i
i
7
5 1/!0"
FROM TABLE
j
£a_
S/4':
X 4:
_
(4419/18'
_'
_OPT
]ONAL
RETURN
,,,:
su,;
SECTION
L
LNOM
(';I'IS 5/18'
TYP 4 PLACES
Fig. 1B -- Roof Curb Details -- 50TM028
A'A
FELT
(FIELD
SUPPLIED)
CANT STRIP
(PIELO
SUPPLIED}
_!/J
_
........
L
RIGID
(FIELD
INSULATION
SUPPLIES)
SUPPLIESI
25% VENT AIR/ /
ECONOMIZER
--_/
HOOD
_._
BLOCK-OFFAl__
PAN
l
I
i
HORIZONTAL SUPPI Y"
CURB (CRRFCURB013A00)
TRANSITION
FULLY INSULATED
SUPPLY PLENUM
14-3/4"
31_
_
I
143/4"1
]
_
/
2"uXI'_R T TYP.
/_
I"ll/NSUDLEATIsITNy,
STITCH WELDED/STICK
PINNED & GLUED
i
23
NOTE: CRRFCURB013A00
is a fully factory preassembled
horizontal adapter and includes an insulated transition duct,
The pressure drop through the adapter curb is negligible,
12" WIDE STANDING
SEAM PANELS
For Horizontal return applications: The power exhaust and
barometric relief dampers must be installed in the return air
duct,
ACCESSORY
PACKAGE NO.
CRRFCURB013A00
Fig. 2 -- Horizontal Supply/Return
Curb or adapter roof curb should be level. This is necessary
to permit unit &'ain to function properly. Unit leveling tolerance is + 1/16 in. per linear ft in any direction. Refer to Accessory Roof Curb or Horizont_d Adapter Roof Curb Installation
Instructions for additional information as required.
ALTERNATE UNIT SUPPORT -- When the curb or adapter
cannot be used, support unit with sleepers using unit curb or
adapter support area. If sleepers cannot be used, support long
sides of unit with a minimum of 3 equally spaced 4-in. x 4-in.
pads on each side.
Rig and Place Unit--Inspect
unit
for
transportation
&mmge. File any chfim with transpom_tion
agency. Keep unit upright, and do not drop. Use spleader bm_
over unit to prevent sling or cable damage. Rollers may be used
to move unit across a roof. Level by using unit frmne as a reference; leveling tolerance is + I/v, in. per line;u ft in any direction. See Fig. 3 for additional information.
Unit weight is
shown in Table 1.
CURB
HEIGHT
1'-11"
(584)
DESCRIPTION
Pre-Assembled Horizontal
Adapter Roof Curb
Adapter Installation (016-025 Only)
10'-0"
(3048)
,SPREADER
BARS
/
.__
Four lifting holes am provided in ends of unit base rails as
shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING
-- Provide clearance around and above unit
for airflow, safety, and service access (Fig. 4-6).
Do not insUdl unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated _fil:
guard against
water
from
ROOF MOUNT -- Check building codes for weight distribution requirements.
"DETAIL
A"
RIGGING HOOK
3'-7 1/2"
(t to51
Step 2 --
Although unit is weatherproof,
higher level runoff and overhangs.
DUCT
UNIT BASE RAIL
SEE
DETAILA"
UNIT
50TM
DIMENSIONS
MAXIMUM
SHIPPING WEIGHT
A
B
Ft-in.
mm
R-in.
mm
810
6-111_
6-111_
2121
2121
4- 0
3-10
1219
1168
864
6-111_
2121
3- 7
1092
1023
6-111_
2121
3- 5
1041
016
Lb
1725
Kg
782
020
1785
025
1905
028
2255
NOTES:
1. Dimensions in ( ) are in millimeters,
2. Refer to Fig. 4-6 for unit operating weights.
3. Remove boards at ends of unit and runners prior to rigging.
4. Rig by inserting hooks into unit base rails as shown. Use corner
post from packaging to protect coil from damage. Use bumper
boards for spreader bars.
5. Weights do not include optional economizer. Add 90 Ib (41 kg) for
economizer weight. See Table 1 for MoistureMi$er TM dehumidification package weight.
6. Weights given are for aluminum evaporator and condenser coil
plate fins.
All panels must be in place when rigging.
Fig. 3 -- Rigging
Details
9.
{274}
J
/
G'
/
/
_
SUPPLY
DUCTWORK BELOW
ELECTRIC
HEATERS
3 _ _ 7/8
©]_\
D©NCENTR}C
_.O.
I} D K.0.
/
s1_
/
('......
NI:R
MUST BE INSTALLED
ON THE
FOR UNITS
EOUIPPEO
WITH
4_
/
0UTDGOR
COIL
A 90 DEGREE
ELBOW
THE UNIT
DISCHARGE
C /
-"
((}
g
3/8"
{
A COND
J
NTR
C K 0
/
(3!
::ss _f
{5/)
'_3/4
_ £PT DRA]N
{27)
FAR SiDE
CONNECTION
@4i Y
(3_0}
Fig. 4 -- Base Unit Dimensions
(1676)
i
50TM016,020
S CT] ON A
a
_B
Fig. 5
J
Base Unit Dimensions
J
50TM025
i/{
l!/[): QLJIPP[I)
['E(
OR
0 ,, CO_ER
(iE{)>OWE_)
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i
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,
HEN
N }AN
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bO_AI
T
/
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v
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....
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(99)
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/
sl
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.:.7
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IO
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m
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(2182)
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io ASS /E >RO>R
CON) NSER FAh, O>ERAI
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LOCAl
CO{)S
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ARANC
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AS $ AIEi)
IN NOI
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REIO/ABLE
FENCE OR BARR CDDE RE©
AEE NO CLEARANCE
76
.
\_
,
3,1o
Y_
0"7
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_
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59"
.....,/<3
_
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.
I
._
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e
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1
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1
D C _ORK ]0 8E / rTt_C ED ]0 DCCE5807_
_OOf
bllN
MUhl C ESbtNOE
REAR
70"
(21 ]4)
FOR C)i
R MO'_A
F
RIDUCi
) 0 4"0"
(129)
COND J ONE Pqb
_
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5-
LV
5
6
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i
i
Table1 -UNIT 50TM
NOMINAL CAPACITY (tone)
OPERATING WEIGHT (Ib)
Economizer
MoistureMi$er TM Dehumidification
Package
Physical Data
016
020
025
028
15
1650
90
40
16
1710
90
40
20
1770
90
40
25
2120
90
40
11..,ZR72KC
_.ZR94KC,
11,_ZR94KC
...ZRIOSKC,
I
11._ZR108KC
._ZR125KC,
2
60, 60
40
85,
2
55, 45
106,
81
I
2
55, 45
106,106
COMPRESSOR/MANUFACTURER
Quantity..,Model
Scroll, Copeland
(Ckt 1, Ckt 2)
Number of Refrigerant
Circuits
Capacity
Stages
Oil
(oz) (Ckt
1, Ckt(%)
2)
REFRIGERANT TYPE
Expansion Device
Operating Charge (Ib-oz)
19-6 I
2
Rows,..Fins/in,
Total Face Area (sq ft)
4...15
21,7
(in.)
I
10,500
10,500
V2...1050
3,..22
1100
Cross-Hatched
17.5
4...15
6.13
184T
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Min/Max (in.)
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter
Belt, Quantity..,Type...Length
(in.)
(in,)
Pulley Center Line Distance (in,)
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Speed
Factory Speed Setting (rpm)
LOW-PRESSURE
Cutout
Reset (Auto)
Low-Medium
High Static
Static
Low-Medium
High Static
Static
Low-Medium
High Static
Static
Low-Medium
High Static
Static
Low-Medium
High Static
Static
Low-Medium
High Static
Static
at Pulley (in.)
SWITCH
I
2,,,12 x 12
Belt
6000
5
1745
Maximum Continuous
Bhp
Motor Frame Size
Nominal Rpm High/Low
Fan Rpm Range
Fan Shaft Diameter
4_.15
21,7
V2_.1050
3,.,22
1100
COIL
Rows,..Finslin,
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size
(in,)
Type Drive
Nominal Cfm
Motor Hp
Motor Nominal Rpm
HIGH-PRESSURE
Cutout
Reset (Auto)
18-11I
19-2
873-1021
1025-1200
Ball
1550
4.9/5,9
4.9/5,9
1 _&
9,4
8,0
17/16
1,,,BX...50
1,,,BX...48
13.3-14.8
37
44
6**
3,5
965
1134
17/16
I
4_.15
21.7
I
3_,1543.4
(2 coils)
Propeller Type
I
14,200
21,000
1 ,,,1075
2.,.30
3400
I
V2...1050
6.,,22
2200
3/8-in. Copper Tubes, Aluminum
Copper Plate Fins, Face Split
17,5
4...15
Lanced or
17.5
4_.15
I
910-1095
1069-1287
Ball
1550
4,9/5.9
4,9/5.9
11/8
9.4
8.0
17/16
1..,BX,..50
1._BX,.,48
13.3-14.8
37
34
17,5
4._15
I
Centrifugal Type
2.,,12 x 12
2,.,12 x 12
Belt
Belt
7200
8000
5
7.5
1745
1745
8.7 [208/230, 575 v]
5.90
9,5 [460 v]
184T
213T
2,.,12 x 12
Belt
10,000
10
1740
10.2 [208/230, 575 v]
11,8 [460 v]
215T
1002-1151
1066-1283
1332-1550
Ball
1550
4.9/5,9
4.9/5,9
13/8
8,0
6.4
1193-1369
Ball
1550
5.4/6.6
5.4/6.6
13/8
9.4
7.9
17/16
1._BX_.53
1_.BX._50
14.6-15.4
37
44
6tt
3.5
1002
1178
17/16
17/16
2,..BX-,50
2,.,BX-,47
14.6-15,4
36
45
6tt
3.5
1182
1470
6**
3.5
1095
1303
17/16
17/16
(psig)
SWITCH
(psig)
27
44
THERMOSTAT
(F)
30 _+5
45 _+5
OUTDOOR-AIR
INLET SCREENS
Quantity,.,Size
(in,)
Cleanable
2...20 x 25 x 1
1,,.20 x 20 x 1
RETURN-AIR FILTERS
Quantity,..Size
(in.)
Throwaway***
4.,.20 x 20 x 2
4._16 x20 x2
POWER EXHAUST
V2 Hp, 208/230-460
LEGEND
---
25-10
426
320
FREEZE PROTECTION
Opens
Closes
Bhp
TXV
26-13
13-14
Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
CONDENSER FAN
Nominal Cfm
EVAPORATOR
19-6 I
13-8
COIL
Motor Hp,.,Rpm
Quantity..,Diameter
Watts Input (Total)
2
50, 106
50
136,
R-22
TXV
c,rcuittt
Circuit
CONDENSER
1 _.ZRU140KC,*
1 _.ZR144KC
Brake Horsepower
Thermostatic Expansion Valve
*The ZRU140KC
compressor
is a tandem compressor, consisting
of a
ZR72KC (25% total capacity) and a ZR68KC (24% total capacity),
tCircuit 1 uses the lower portion of the condenser coil and lower portion of
the evaporator coils; and Circuit 2 uses the upper portion of both coils,
**Pulley has 6 turns. Due to belt and pulley size, movable pulley cannot be set
to 0 to 11/2turns open,
v Motor Direct Drive, Propeller-Fan
(Factory-Wired
for 460 v)
tl-Pulley has 6 turns. Due to belt and pulley size, movable pulley cannot be
set to 0 to V2 turns open,
***The 50TM028 unit requires 2-in, industrial-grade filters capable of handling
face velocities up to 625 ft/min (such as American Air Filter no. 5700 or
equivalent).
NOTE: The 50TM016-028
on the suction side.
units have a low-pressure
switch (standard) located
Step 3 --
Field Fabricate Ductwork -- Secure all
ducts to building structure. Use flexible duct connectors between unit and ducts as required. Insulate and weatherproof all
external ductwork, joints, and roof openings with counter
flashing and mastic in accordance with applicable codes.
Ducts passing through an unconditioned
insulated and covered with a vapor barriel:
space
must
be
The 50TM units with electric heat require a l-in. clearance
for the first 24 in. of ductwork.
Outlet grilles must not lie directly below unit disch_u'ge.
NOTE: A 90-degree elbow must be provided in the ductwork
to comply with UL (Underwriters Laboratories) codes for use
with electric heat.
Step 4 -- Make
Unit Duct Connections
-- Unit
is shipped for through-the-bottom
duct connections. Ductwork
openings tue shown in Fig. 7. Field-fabricated concentric ductwork may be connected as shown in Fig. 8 and 9. Attach all
ductwork to roof curb and roof curb basepans. Refer to installation instructions shipped with accessory roof curb for mole
information.
Step 5 -- Trap Condensate
Drain -- See Fig. 4-6
trod 10 for di'ain location. Plug is provided in drain hole and
must be removed when unit is operating. One :V4-in. halfcoupling is provided inside unit evaporator section for condensate drain connection. An 81/2 in. x :V4-in. diameter nipple and a
2-in. x :V4-in. diameter pipe nipple are coupled to standard
3/4-in. diameter elbows to provide a straight path down through
holes in unit base rails (see Fig. 11 ). A trap at least 4-in. deep
must be used.
For vertical supply and leturn units, tools or pmls could
diop into ductwork and cause an injury. Inst_dl a 90-degree
turn in the return ductwork between the unit and the conditioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be installed
to prevent objects from falling into the conditioned space.
Due to electric heatel: supply duct will require 90-degree
elbow.
EVAPORATORFAN MOTOR
!
BAFFLE
Shaded area indicates block-off panels.
NOTE
NOTE: Dimensions A, A', and B, B' are obtained from field-supplied
ceiling diffuser.
Fig. 9 --
L
V!
Concentric
Duct Details
OUT
NOTE: Do notdrill
inthisarea;damage tobasepanmay result
in
water leak.
Fig. 7 --
Air Distribution
-- Thru-the-Bottom
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
\
NOTE
3/4" FPT DRAIN
CONNECTION
1-3/8"
DRAIN HOLES
Fig. 10Condensate Drain Details
(50TM016,020 Shown)
AIR OUT
AIR IN
AIR OUT
NOTE: Do not drill in this area; damage to basepan may result in
water leak.
Fig. 8 -- Concentric
Duct Air Distribution
3/4"
PPT
DRAIN
/
2-IN, (FIELD-SUPPLIED)
NIPPLE
/
CONNECTION
/HALF
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
]_
,e
3"
BASE
RAIL
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
damage to electrical components.
_-__._
FIELD CONTROL
WIRING -- Install a Carrier-approved
accessory thermostat assembly according to the installation instructions included with the accessory. Locate thermostat
assembly on a solid wall in the conditioned space to sense average temperature.
81/2-1N.
(FIELD_---'=
SUPPLIED)
NIPPLE
Fig. 11 -- Condensate
Step 6 --
Drain Piping Details
Make Electrical
FIELD POWER SUPPLY
age shown on nameplate.
When installing
(National Electrical
(Table 2).
All field
requirements.
wMng
Route thermostat cable or equiwdent single leads of no. 18
AWG (American Wire Gage) colored wire from subbase temrinals through conduit in unit to low-voltage connections
as
shown on unit label wiring diagram and in Fig. 13.
Connections
-- Unit is factory wired for volt-
NOTE: For wire runs up to 50 It, use no. 18 AWG insulated
wire (35 C minimum). For 50 to 75 fi, use no. 16 AWG insulated wire (35 C minimum). For over 75 It, use no. 14 AWG
insulated wire (35 C minimum). All wire lmger than no. 18
AWG cannot be directly connected to the thermostat and will
require a junction box and splice at the thermostat.
units, provide a disconnect,
per NEC
Code) requirements,
of adequate size
must
comply
with
NEC
and
loc:d
Set heat anticipator settings as indicated in Table 3. Settings
may be changed slightly to provide a greater degree of comfort
for a particular inst_dlation.
Route power lines through control box access panel or unit
basepan (Fig. 4-6) to connections as shown on unit wiring diagram and Fig. 12.
Operating voltage to compressor
must be within voltage
range indicated on unit nmneplate. On 3-phase units, voltages
between phases must be balanced within 2% and the current
must be b_danced within 10%.
----]
TBt
I
b
w_
z W
z z
o_
ow
o3o.
The correct power phasing is critical in the operation of the
scroll compressors. An incorrect phasing will cause the
compressor to rotate in the wrong direction. This may lead
to plemature complessor failure.
Use the following formula to determine the percentage of
voltage imbalance.
Percentage of Voltage Imbalance
EQUIP
TB1 MAXIMUM WIRE SIZE
= 100 x max voltage deviation fiom average voltage
average voltage
EXAMPLE:
A
B
C
GND
UNIT
50TM
All
Supply voltage is 460-3-60.
AB = 452 v
350
208/230
kcmil
I
VOLTAGE
460
2/0
575
2/0
LEGEND
EQUIP
GND
kcmil
NEC
TB
AC = 455 v
BC
= 464 Voltage
v
Average
=
455 + 464 + 455
3
------
Equipment
Ground
Thousand Circular Mils
National Electrical Code
Terminal Block
Fig. 12-
1371
3
Field Power Wiring Connections
= 457
Determine
(AB) 457
(BC) 464
(AC) 457
Maximum
maximum deviation
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
deviation is 7 v.
from average
Determine
percent voltage imbalance:
voltage:
THERMOSTAT ASSEMBLY
JUMPER
I
7
Percentage of Voltage [mbalance = 100 x- 457
Cl
cc
= 1.53%
m
_
Z
a_
O
Z
_
m
m
UNIT LOW-VOLTAGE CONNECTIONS
Fig. 13 -- Field Control Thermostat Wiring
This amount of phase imbalance is satisfacto U as it is
below the maximum allowable 2%.
10
7-
Table 2 -- Electrical Data
UNIT
50TM
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
208/230
VOLTAGE
RANGE
Min
187
Max
253
COMPRESSOR
No. 1A
No, 1
RLA
32.1
LRA
195
RLA
LRA
OFM
No. 2
RLA
20.7
LRA
156
Qty
3
Hp
0.5
POWER
EXHAUST
IFM
FLA
(ea)
1.7
Hp
5.0
FLA
15.8/15.8
FLA
LRA
ELECTRIC
HEAT*
kW
FLA
---
575
208/230
414
518
187
508
633
253
16.4
12
30.1
95
80
225
10
8.2
28.8
70
54
195
3
3
3
0.5
0.5
0.5
0.8
0.75
1.7
5.0
5.0
5.0
7.9
020
460
575
208/230
414
518
187
508
632.5
253
15.5
12.1
42
114
80
239
14.7
10.8
33.6
95
80
225
3
3
0.8
0.5
2
1
0.8
0.8
6.6
5.0
5.0
7.5
7.9
6.0
25.0/25.0
575
414
518
508
632.5
19.2
13.8
125
80
17.3
13.5
114
80
2
2
1
1.0
3.3
3.4
7.5
7.5
13.0
4.6
18.8
26/34
26/34
4.6
18.8
42/56
42/56
4.6
18.8
56/75"*
56/75"*
--
41
50
2.3
6.0
--
--
43
50
2.3
6.0
32
32
39
39
59
62
60
70
2.3
6.0
55
55
66
66
76
79
90
90
2.3
6.0
80**
80**
96
96
106
109
125
125
2.1
4.8
--
---
31
34
40
40
4.6
18.8
--
---
4.6
18.8
26/34
26/34
4.6
18.8
42/56
42/56
4.6
18.8
2.3
71/ 82
71/ 82
109/122
114/128
110/128
125/180
117/135
117/135
166/155
172/161
175/175
178/175
156/180
156/180
176/200
182/206
200/225
200/225
82
82
87
92
110/110
110/110
109/122
114/128
110/125
125/150
117/135
117/135
166/155
172/161
175/175
175/175
56/75
56/75
156/180
156/180
176/200
182/206
200/225
200/225
6.0
--
---
44
47
50
60
2.3
6.0
32
32
39
39
59
61
60
70
2.3
6.0
55
55
66
66
76
79
90
90
2.3
6.0
80
80
96
96
106
109
125
125
2.1
4.8
--
---
34
36
40
40
4.6
18.8
--
---
4.6
18.8
26/34
26/34
4.6
18.8
42/56
42/56
4.6
18.8
56/75
56/75
--
61
80
2.3
6
--
--
63
80
2.3
6
32
32
39
39
65
68
80
80
2.3
6
55
55
66
66
82
85
90
90
2.3
6
80
80
96
96
112
115
125
125
2.1
4.8
--
---
48
50
60
60
10.0
71/
71/
87/
92/
124/124
129/129
150/150
150/150
124/134
129/140
150/150
180/150
117/135
117/135
178/166
183/172
200/175
200/175
156/180
156/180
187/211
193/217
200/228
200/225
71/ 82
71/ 82
Tab_confinued
1!
110/110
110/110
--
025
460
MOCPt
18.8
6.0
15.8/15.8
MCA
82/ 82
86/ 86
4.6
016
460
POWER SUPPLY
on next page.
Table 2 -- Electrical Data (cont)
UNIT
50TM
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
208/230
VOLTAGE
RANGE
Min
187
Max
253
COMPRESSOR
No, 1A
No. I
RLA
20.7
LRA
156
RLA
20.7
LRA
156
OFM
No, 2
RLA
47.1
LRA
245
Qty
6
Hp
0.5
POWER
EXHAUST
IFM
FLA
(ea)
1.7
Hp
FLA
FLA
10.0
28.0/28.0
028
46O
578
414
518
508
622.5
10.0
16.4
75
108
10.0
8.2
75
54
19.6
15.8
125
100
6
6
0.5
0.5
10.0
0.8
0.8
10,0
LEGEND
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
OFM
RLA
----------
IMPORTANT:
178/178
175/178
138/188
143/143
178/178
178/178
4.6
18.8
26/34
26/34
4.6
18.8
42/56
42/56
117/135
117/135
181/170
187/176
200/175
200/200
4.6
18.8
56/75
56/75
156/180
186/180
191/215
197/221
200/225
200/225
2.3
6
--
--
64
66
8O
80
2.3
6
32
32
39
39
67
70
80
80
2.3
6
55
55
66
66
84
87
90
100
2.3
6
80
80
96
96
114
117
125
125
2.1
4.8
--
--
54
56
60
70
71/ 82
71/ 82
is satisfactory
ty company
as it is below the maxi-
is more than 2%, con-]
tamed ate y.
J
MCA calculation for 50TM016-028 units with electric heaters over 50 kW
= (1.28 x IFM amps) + (1.00 x heater FLA).
4. Use the following table to determine heater capacity at actual voltage.
HEATER
RATING
VOLTAGE
200
208
ACTUAL HEATER VOLTAGE
230
240
240
0.694
0.781
0.918
1.000
480
EXAMPLE:
LIST_O
452 + 464 + 455
3
1371
3
= 487
12
380
440
460
480
0.626
0.840
0.918
1.000
34 kW (at 230 v) heater on 208 v
= 34.0 (.751 mult factor)
= 25.8 kW capacity at 208 v.
AB = 452 v
Average Voltage =
BC = 464 v
--
--
AC = 455 v
(_
MOCPt
3.
max voltage deviation from average voltage
average voltage
C
MCA
138/138
143/143
18.8
Supply voltage is 480-3-60.
B
FLA
If the supply voltage phase imbalance
tact your oca e ectr cut
NOTES:
1. In compliance with NEC requirements for multimotor and combination
load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The Canadian
units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent of
voltage imbalance,
% Voltage Imbalance
A
kW
4.6
= 1.53%
This amount of phase imbalance
mum allowable 2%.
*Heater capacity (kW) is based on heater voltage of 208 v, 240 v and 480 v.
Heaters are rated at 240 v and 480 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly. To determine
heater capacity at actual unit voltage, multiply 240 v or 480 v capacity by
multipliers found in table in Note 4.
tFuse or HACR circuit breaker.
**Electric heaters are field installed.
EXAMPLE:
13,0
LRA
POWER SUPPLY
Determine maximum deviation from average voltage.
(AB) 487 - 482 = 8 v
(BC) 464 - 487 = 7 v
(AC) 487 - 488 = 2 v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
7
% Voltage Imbalance = 100 x 45_
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
MinimumCircuitAmps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
= 100 x
14.6
ELECTRIC
HEAT*
Table 3 -- Heat Anticipator Settings
UNIT
50TM
UNIT
VOLTAGES
kW*
26/34
42/56
56/75
208/230-3-60
016-028
32
55
80
460-3-60
Step 7 -- Make Outdoor-Air
STAGE 1
STAGE 2
.40
.66
.66
.66
.40
.66
.40
.40
.66
.40
.66
.66
Inlet Adjustments
MANUAL OUTDOOR-AIR
DAMPER -- All units (except
fllose equipped with a factory-inst_dled
economizer)
have a
manual outdoor-air &lmper to provide ventilation tdl: Dmnper
can be preset to admit up to 25% outdoor air into return-air
compartment.
To adjust, loosen securing screws and move
&tmper to desired setting. Then retighten screws to secure
&tmper (Fig. 15).
25% ADJUSTABLE
AIR DAMPER
*Heater kW is based on heater voltage of 208 v, 240 v or 480 v.
OPTIONAL NON-FUSED
DISCONNECT
-- On units with
the optional non-fused disconnect, incoming power will be
wired into the disconnect switch. Refer to Fig. 14 for wiling
for 100 and 200 amp disconnect
switches. Units with an
MOCP under 100 will use file 100 amp disconnect switch.
Units with an MOCP over 100 will use the 200 amp disconnect switch. Refer to the applicable disconnect wiring diagrmn.
BASE
UNIT
To prevent breakage during shipping, file disconnect handle
and shaft are shipped and packaged inside the unit control box.
Install file disconnect handle before unit operation. To install
the handle and shaft, perform the following procedure:
J
SECURING
1. Open the control box door and remove the handle and
shaft fi'om shipping location.
2. Loosen the Allen bolt located on the disconnect switch.
The bolt is located on the square hole and is used to hold
the shaft in place. The shaft cannot be inserted until the
Allen bolt is moved.
3.
Fig. 15 -- 25% Outdoor-Air
Tighten the Allen bolt to lock the shaft into position.
Close the control box dool:
6.
Attach the handle to the external access door with file two
screws provided. When the handle is in the ON position,
the handle will be vertical. When the handle is in the OFF
position, the handle will be horizontal.
7.
Turn the handle to the OFF position and close the door.
The handle should fit over the end of the shaft when the
door is closed.
8.
Install Outdoor-Air
Hood -- The same
type of factory-installed
hood is used on units with 25% air
ventilation and units with an economizel:
IMPORTANT:
If the unit is equipped
with the
optional
EconoMiSerlV
component,
move
the
outdoor-air
temperature
sensor prior to installing the
outdoor-air hood. See the Optional EconoMiSerIV
and
EconoMiSer2
section for more information.
Personal Injury Hazard. Avoid possible injmN by keeping fingers away [roln dmnper blades.
NOTE: The hood top panel, upper trod lower filter retainers,
hood diain pan, baffle (028), and tilter support bracket are
secured to the unit and shipping skid at the opposite end of the
unit in front of the condenser coil. The screens, hood side panels, remaining section of filter support bracket, seal strip, and
_dl other hardwme are in a package located inside file return-air
tilter access panel (Fig. 16).
1. Attach seal strip to upper filter retainel: See Fig. 17.
The handle must be in the OFF position to open the control box dool:
OPTIONAL
CONVENIENCE
OUTLET-On units with
optional convenience
outlet, a l15-v GFI (ground fault interrupt) convenience outlet receptacle is provided for field wiring.
Field wiring should be run through the 7/8-in. knockout provided in the basepan near the return air opening.
2.
UNIT
I00
AMP
BLK.
WIRING
YEL.
6T3
4T2
2T1 LOAD
3.
BLU.
POWER SUPPLY
UNIT
200
AMP
BLK.
5L3 3L2
1L1 LINE
Slide baffle (size 028 unit) behind lower filter retainer and
tighten screws.
5.
Ix_osen sheet metal screws for base unit top panel located
above outdoor-air inlet opening, and remove screws for
hood side panels located on the sides of the outdoor-air
inlet opening.
6.
Match notches in hood top panel to unit top panel screws.
Insert hood thmge between unit top panel flange and unit.
Tighten screws.
7.
Hold hood side panel flanges flat against unit, and install
screws removed in Step 5.
8.
Insert outdoor-air inlet screens and spacer in channel created by lower filter retainer and filter support bracket.
9.
Attach remaining
WIRING
YEL,
BLU.
[ ONITPDWER
,
I NON
FUSED
DISCONNECT
F]ELD
POWER SUPPLY
NOTE: The disconnect takes the place of TB-1 as shown on the unit
wiring diagram label and the component arrangement label.
Fig. 14 -- Optional
Non-Fused
Disconnect
Wiring
13
Assemble hood top panel and side panels, upper filter
retainer, and hood drain pan (Fig. 18).
Secure lower tilter retainer and long section of filter support bracket to unit. See Fig. 18. Leave screws loose on
028 units.
4.
100_
AMP
FIELD
Section Details
Step 8 --
|nsert the disconnect shaft into the square hole on the disconnect switch. The end of the shaft is specially cut and
the shaft can only be inserted in the correct orientation.
4.
5.
SCREWS
short section of filter support bracket.
Step 9 --
OUTDOOR-AIR
HOOD AND
MOUNTING BRACKETS
FILTER
PACKAGEANE
HOOD
COMPONENTS
ACCESS
Fig. 16-
PANEL
Outdoor-Air
Hood
Component
-- After ;dl the
To avoid dmnage to the refiigelant coils and electric_d components, use recommended
screw sizes only. Use care
when drilling holes.
Location
PANEL
UPPER
Install All Accessories
factory-installed
options have been adjusted, install all fieldinst_dled accessories. Refer to the accessory inst_dlation instructions included with each accessory.
MOTORMASTER®
I
CONTROL
INSTALLATION
(50TM016, 020, and 028 Only)
Install Field-Fabricated
Wind Baffles -- Wind baffles must
be field-fabricated
for all units to ensure proper cooling cycle
operation at low ambient temperatures. See Fig. 19 for baffle
details. Use 20-gage,
galvanized
sheet metal, or similar
conosion-resistant
metal for baffles. Use field-supplied screws
to attach baffles to unit. Screws should be 1/4-in. diameter and
5/8-in. long. Drill required screw holes for mounting baffles.
Install Motormaster®
I Controls -- Only one Motormaster I
control is required for size 016 and 020 units. Two Motormaster I controls tue required for size 028 units -- one for circuit 1
and one for circuit 2. The Motommster [ control must be used
in conjunction with the Accessory 0 ° F Ix_w Ambient Kit (purchased separately). The Motormaster I device controls outdoor
fan no. 1 (and 4 on size 028 units) while outdoor fans no. 2 and
3 (and 5 and 6 on size 028 units) are sequenced off by the
Accessory 0 ° F Low Ambient Kit.
HOOD DRAIN
FILTER.
RETAINER
Accessom" 0 ° F I_m' Ambient Kit -- Install the Accessory
Low AmiNent Kit per instruction supplied with accesso%
Sensor Assemb@ -- Install the sensor assembly
shown in Fig. 20.
Fig. 17 -- Seal Strip Location
(Air Hood Cross-Sectional
View)
BAFFLE
0° F
in the location
(028 ONLY)
WIND
j/t
\
/
/_4
BAFFLE __
RETAINER
_
I
LOWER
FILTER
FILTER
SUPPORT
i
BRACKET
\
/
___CROSS
BREAK
A
\
\
HOOD SIDE
PANELS (2)
\
HOOD
BAFFLETOP VIEW 1"(25)MIN---jl
TOP
_
PANEL
80"+2"
_^ +50)
-0" ,_z_z-0
BAFFLE
I
--
10" (254)
40"
(1016)
• LOWER
FILTER
RETAINER
•_10"
-
FILTER SUPPORT
BRACKET
"-'----_1
÷
HOOD
UPPER
FILTER
DRAIN
PAN
3/4" (19)(TYP)--,,-t
BAFFLE FRONTVIEW
RETAINER
NOTE: The outdoor-air hood comes with a baffle which is used on
028 units only; discard baffle for 016-025 units.
Fig. 18 --
Outdoor-Air
Hood
*+-I--
-
_,-
NOTE: Dimensions in ( ) are in mm.
Fig. 19 --
Details
14
Wind
Baffle
Details
(254)
(]yp)
1
15" (381)
(rYp)
1" (25) MIN
Motor Mount- To ensure proper fan height, replace the existing motor mount with the new motor mount provided with
accessory.
Trarl._fbrmer (460 and 575-v Ulli_ Only) -- On 460 and
575-volt units a transfonner is required. The transformer is
provided with the accessot T and must be field-installed.
Motormaster I Control -- Recommended mounting location is
on the inside of the panel to the left of the control box. The
control should be mounted on the inside of the panel, vertically, with leads protruding from bottom of extrusion.
MOTORMASTER®
V CONTROL
INSTALLATION
(50TM025 only)
Install Field-Fabricated Wind Baffles -- Wind baffles must
be field-fabricated for all units to ensure proper cooling cycle
operation at low ambient temperatures. See Fig. 19 for baffle
details. Use 20-gage, galwmized sheet metal, or similar corrosion-resistant met:d for baffles. Use field-supplied screws to attach baffles to unit. Screws should be I/4-in. diameter and
5&-in.long. Drill required sctew holes for mounting baffles.
m
SENSOR
LOCATION
To avoid dmnage to the refliget_tnt coils and electric_d components, use recommended
screw sizes only. Use care
when drilling holes.
Install Motormaster
V Controls -- The Motortnaster V control is a motor speed control device which adjusts condenser
fan motor speed in response to declining liquid refrigetant
pressure. A properly applied Motormaster V control extends
the operating range of air-conditioning systems and permits operation at lower outdoor ambient temperatures.
The minimum ambient temperatures at which the unit will
operate are:
TEMPERATURE
Standard Unit
]
40 (4)
[
OPERATING
Unit with Low Ambient
LIMITS -Kit
HAIRPIN
END
HAIRPIN
50TM016
NOTE: All sensors
bottom.
END
-20
ITEM DESCRIPTION
CRLOWAMB015A00
480
CRLOWAMB016A00
575
CRLOWAMB017A00
FROMFUSEBLOCK
m
o
TO PRESSURE
TRANSDUCER
TO MOTOR(S)
Table 5 -- Applicable Voltages and Motors
Fig. 21 -- Motormaster_)
I
COMPATIBLE
END
50TM028
(CIRCUITS
1 AND 2)
are located on the eighth hairpin up from the
(-29)
208/230
460-3-60
208/230-3-60
575-3-60
HAIRPIN
F° (C °)
VOLTAGE
]
_0
Fig. 20 -- Motormaster(_) I Sensor Locations
Table 4 -- Motormaster V Control Package Usage
VOLTAGE
LOCATION
Unit with MMV Control
25 (-4)
50TM025
SENSOR_ O
50TM020
To operate down to the ambient temperatures listed,
Motormaster
V controls (Fig. 21) must be added. Fieldfabricated and inst:dled wind baftles are also required for all
units (see Fig. 19). The Motormaster V control permits operation of the unit to an ambient temperature of-20 F (-29 C). The
control regulates the speed of 3-phase fan motot:s that me compatible with file control. These motors are factory installed.
See Table 4 for the Motormaster V control accessory package usage. Table 5 shows applicable
voltages and motors.
Replacement
of fan motor IS NOT REQUIRED
ON
CURRENT
PRODUCTION
UNITS since the control is
compatible with the factory-installed
fan motors. Only field
wiring control is requited.
Install the Motormaster V control per instructions supplied
with accessory.
UNIT
m
_o°O
_o °
_oo°o
_o °
_oo°o
_o °
_oo°o
_o °
_oo°o
_o °
_oo°o
_o °
€_o
°° SENSOR-_o o LOCAT,ON
_
o
_oo°o
_° °
_oo°o
_° °
_oo°o
_°o°
MOTOR*
HD52AK684
H
D52AK654
HD52GE576
*Motormaster V compatible motors, P/N HD52AK654 for 208/230,
460 v and
P/N HD52GE876 for 878 v, are installed in units with serial numbers 2801F
and later. For units with serial numbers before 2801F, motor changeout is
required prior to installing the Motorrnaster V control package.
15
V Control
Step 10-
Adjust
PREMIERLINK
Factory-Installed
CONTROL
TM
--
Options
Tile PmmierLink
Install
control-
ler is available
as a special
order from the factory
and is
compatible
with
the Carrier
Comfort
Network®
(CCN)
system. This control is designed
to allow users the access and
ability to change
factory-defined
settings,
thus expanding
the
function
of the standard unit control board. Cmrier's
diagnostic
standard
tier display
tools
such
as Navigator
TM
device
or Scrolling
controllen
Marquee
can
be
used
with
the
controller
thermostat
(see Fig. 22) requires
or a CCN connection
bl_)adcast
its interred
timeclock.
to initiate
This
The
the use of
for time
is necessm-y
for
bl_)adcast of time of day functions
(occupied/unoccupied).
No
sensoLs
me supplied
with
the field-mounted
PmmierLink
control
The factory-installed
PremierLink
control
includes
only the supply-air
temperature
(SAT) sensor and the outdoor
air temperature
(OAT) sensor as stan&trd+ An indoor air quality
(CO2) sensor can be added as an accessory.
Refer to Table 6 for
sensor
usage.
Refer to Fig. 23 for PmmierLink
controller
wiring+
The PremierLink
control
may
be mounted
in the
control
panel
or an mea
below
the control
INPUTS
panel.
OUTDOOR AIR QUALITY
DUAL MODE SENSOR (STAT)
is wire-tied
inside
the unit control
I
.......
R_
--
the Indoor
Air Quality
(CO22 Sensor
Instructions
for
O
I
I
I
.....m<2+++__
Mount
Pm_NlI,+bm: ItIC_P¢_
_,,=+,,+
----"
u==+,+
....
J
]
¢m_
i +s_
=
I_
]
+ i
r4
i
+IIO_IEN[III
1
./
,]
-"++-+++
l
1111
_++_m
mm_
COMP SAFETY (Y1)
FIRE SHUTDOWN (Y2)
SUPPLY FAN STATUS(W1)
.Iio +Iqq'l'l+'l'I
m_ .........
omm_
NOT USED (W2)
.....................
.+J
ENTHALPY STATUS(ENTH) /
/
CCN/LEN
PORT
the
and IAQI termimds
of J5
to the PremierLink
Instal-
Start-up,
and Configuration
and configuration
information.
+++_I_+i
PremzerL_nk
i m_"
_l
, w+_
=, q _7
III
for
Install
O
_
%%:_II
box
The outdoor-air
and wired. No
O
i
Sensor
Outdoor
Air Temperature
(OAT) Sensor
-temperature
sensor ((-)AT) is factory-supplied
adjustment
is necessary.
lation,
wiring
SET POINT
INDOOR AIR QUALITY
SAT sensor
Wire the CO2 sensor to the COM
on the PremierLink
controller
Refer
SPACETEMP
SUPPLY AIR TEMP
OUTDOOR TEMP
(SAT)
accessory
indoor air quality
(COs) sensor according
to manufacturer
specifications.
A sepm'ate
field-supplied
transformer
must be used to power the CO2 sensol:
NOTE: PmmierLink
controller
version 1.3 and later is shipped
in Sensor
mode (for use with space of mtum sensor).
If used
with a thermostat,
the PremierLink
controller
must be configured to Thermostat
mode.
HVAC SENSOR
Air Temperature
shipping.
Remove
the sensor for installation.
Locate a suitable
location on the supply duct beneath
the curb for SAT installation. Drill or punch a I/2-in. hole in the duct. Use two fieldsupplied,
self-drilling
screws to secure the sensor probe in a
horizontal
orientation.
Route wiring
from the sensor through
the unit's control voltage hole in the unit base pan. Connect
the
sensor wires to J6 connector's
Pin 5 (BRN lead) and Pin 6
(ORN lead) as indicated
in Fig. 23.
PremierLink
The PremierLink
a Canier
electronic
the Supply
NOTE: The sensor must be mounted
in the discharge
tfirstmam
downstream
of the cooling
coil and any heating devices.
Be
sure the probe tip does not come in contact
with any unit or
heat surfaces.
t
NAVIGATOR
PORT
/
4+20MA
ECONOMIZER
f "4
"-4
"-.,
COMPR
HEAT
EXHAUST
INDOOR
PANMOTOR
1 &2
OUTPUTS
Fig. 22 -- PremierLink Controller
16
LOW/HIGH RVS VALVE
detailed
Table 6 -- PremierLink
APPLICATION
Differential
OUTDOOR AIR
TEMPERATURE SENSOR
TM
Sensor Usage
RETURN AIR
TEMPERATURE SENSOR
OUTDOOR AIR
ENTHALPY SENSOR
RETURN AIR
ENTHALPY SENSOR
Required -33ZCT55S PT
--
--
--
Required -33CSENTHSW
or
HH57AC077
--
--
Required -33CSENTHSW
(HH57ZC003)
or
HH57AC077
Required33CSENTSEN
or
HH57AC078
Dry Bulb
Temperature with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Single Enthalpy with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Differential
Enthalpy
with PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Included -HH79NZ039
or Equivalent
Included -Not Used
Included -Not Used
*PremierLink control requires supply air temperature sensor 33ZCSENSAT and
outdoor air temperature sensor HH79NZ039 -- Included with factory-installed PremierLink control;
field-supplied and field-installed with field-installed PremierLink control.
NOTES:
1. CO2 Sensors (Optional):
33ZCSENCO2 -- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.
33ZCASPCO2 -- Aspirator box used for duct-mounted CO2 room sensor.
33ZCT55CO2 -- Space temperature and CO2 room sensor with override.
33ZCT56CO2 -- Space temperature and CO2 room sensor with override and setpoint.
2. All units include the following Standard Sensors:
Outdoor-air sensor -- 50HJ540569 -- Opens at 67 F, closes at 52 F, not adjustable.
Mixed-air sensor -- HH97AZ001 -- (PremierLink control requires supply air temperature sensor 33ZCSENSAT
and outdoor air temperature sensor HH79NZ039)
Compressor lockout sensor -- 50HJ540570 -- Opens at 35 F, closes at 50 E
]7
®
DDCCONTnOL
CMPSAFE
Y1
_TH
FSD
Y2
SFS
Wl
NOTUSEn
W2
®
®
nMTOCC
C
X
EFIMELDTAT
_c G
(D
©
Q
G
TSTATCONTnOL
C
X
Fig. 23 -- Typical PremierLink
TM
BOTJ401148
ECONOMIZE_
(CnECOMZn010B00)
OAT
PL
PWR
SAT
TB
TRAN
Controls
ENTHALPY SWITCH/RECEIVER
-- The accessoly
enthalpy switch/receiver
(33CSENTHSW)
senses temperature
and humidity of the air sulTounding the device and c_dculates
the enthalpy when used without an enthalpy sensoc The relay is
energized when enthalpy is high and deenergized when enthalpy is low (based on ASHRAE [American Society of Heating, Refrigeration and Air Conditioning Engineers] 90.1 criteria). [f an accessol y enthalpy sensor (33CSENTSEN)
is attached to the return air sensor input, then differential enthalpy is
c_dculated. The relay is energized when the enlhalpy detected by
the return air enthalpy sensor is less than the enth_dpy at the enthalpy switch/receivec
The relay is deenergized when the enthalpy detected by the return air enth_dpy sensor is gleater than
the enlh_dpy at the enthalpy switch/receiver
(differential enthalpy control). See Fig. 24 and 25.
is done using an average
LEGEND
Outdoor Air Temperature Sensor
Plug
Power
Supply Air Temperature Sensor
Terminal Block
Transformer
Control Mode)
(National Electrical Manufacturers
Association) enclosure and
should be mounted in a location that is not exposed to outdoor
elements such as rain or snow. Use two field-supplied no. 8 x
3/4-in. TEK sclews. Insert the screws through the holes in the
sides of the enthalpy switch/receivec
Wiring -- Carrier recommends
the use of 18 to 22 AWG
(American Wire Gage) twisted pair or shielded cable for all
wiring. All connections must be made with l/4-in, female spade
connectors.
A 24-vac transformer is required to power the enthalpy
switch/receiver;
as shown in Fig. 26, lhe PlemierLink
botud
provides 24 vac. Connect the GND and 24 VAC terminals on
the enlhalpy switchheceiver
to lhe terminals on lhe tmnsformec On some applications, the power from the economizer harness can be used to power the enth'.Apy switch/receivec
To
power the enthalpy switch/receiver
from the economizer harness, connect power of the enthalpy switchheceiver
to the led
and brown wires (1 and 4) on the economizer harness.
OUTDOOR
ENTHALPY
CONTROL
(Fig. 26) -- Outdoor
enthalpy control lequires only an enth_dpy switch/receiver
(33CSENTHSW).
The enthalpy switch/receiver
is mounted in
the outdoor air inlet and calculates outdoor air enthalpy. The
enthalpy switch/receiver
enelgizes the relay output when the
outdoor enthalpy is above 28 BTU/Ib OR dry bulb temperature is above 75 F and is deenergized
when the outdoor
enthalpy is below 27 BTU/Ib AND diy bulb temperature is
below 74.5 E The relay output is wired to the unit economizer
which will open or close depending on the output of the
switch.
NOTE: The enlhalpy calculation
tude of 1000 ft above sea level.
Wiring (Thermostat
-------
For connection to rooftop units with PremierLink control,
connect the LOW Enthalpy termimfl on lhe enthalpy switch/receiver to J4 -- pin 2 of the PlemierLink control on the HVAC
unit. The switch can be powered through the PremierLink control board if desired. Wire the 24 VAC terminal on lhe enthalpy
switchheceiver
to J4 -- pin 1 on the PremierLink control. Wire
the GND termin:d on the enthalpy switch/receiver
to Jl -pin 2 on the PremierLink control The HI Enthalpy terminal is
not used. See Fig. 26.
_dti-
Mounting -- Mount lhe enthalpy switch/receiver
in a location
where the outdoor air can be smnpled (such as the outdoor air
intake). The enthalpy switch/receiver
is not a NEMA 4
18
1.
@
Thermistor
F
Fig. 24 -- Enthalpy Switch/Receiver
(33CSENTHSW)
Humidity
Sensor
Thermistor
Dimensions
S
Humidity
Fig. 25 -- Enthalpy Sensor Dimensions
(33CSENTSEN)
0
0
T_T_T_
_U
SPT
I_K _r_
......
Sensor
_O_
1
¢
I
{
I
Part Nurn_m 33CSPREMLK
_
c_ei
maP_
_i
_2
_v
pw
.gB_....9.ON... ......
- - - -G_Y--'- _E_ .......
I
I
/
I
I
I
I
I
I
I
I
__
(OR
UNIT
GROUND)
\
*Used with Differential
Fig. 26 -- Typical Wiring Schematic
-- Carrier Rooftop
19
Unit with PremierLink
TM
Enthalpy Control only.
Controls
DIFFERENTIAL
ENTHALPY
CONTROL
(Fig. 27) -Differential enthalpy control requires both an enthalpy switch/
receiver
(33CSENTHSW)
and
an
enthalpy
sensor
(33CSENTSEN).
The enthalpy switch/receiver
is mounted in
the outdoor air inlet and calculates outdoor air enthalpy. The
enthalpy sensor is mounted in the return airstream and calculates the enthalpy of the indoor ail:
4 screws holding the cover on the enthalpy sensor and then mmove the covet The factory settings for the jumpel,s am M3
and OFF.
The mode jumper should be set to M3 for 4 to 20 mA
output. The factory test jumper should remain on OFF or the
enthalpy sensor will not calculate enflialpy.
ENTHALPY SENSORS AND CONTROL
-- The enthalpy
control (HH57AC077)
is supplied as a field-installed accessory
to be used with the EconoMi$er2
damper control option. The
outdoor air enth_dpy sensor is part of the enthalpy control. The
separate field-installed
accessory return air enflialpy sensor
(HH57AC078)
is required for differential enthalpy control.
The enthalpy switch/receiver
energizes the HI Enthalpy relay output when the outdoor enthalpy is greater than the indoor
enthalpy. The LOW Enthalpy terminal is energized when the
outdoor enthalpy is lower than the indoor enthalpy. The relay
output is wired to the unit economizer which will open or close
depending on the output of the switch.
NOTE: The enthalpy calculation
tude of 1000 ft above sea level.
is done using an average
NOTE: The enthalpy control must be set to the "D" setting for
differential enthalpy control to work properly.
The enthalpy
control receives
the indoor and return
enthalpy from the outdoor and return air enthalpy sensors and
provides a dry contact switch input to the PremierLink
controllel: Ix)cate the controller in place of gin existing economizer controller or near the actuatol: The mounting plate may
not be needed if existing bracket is used.
alti-
Mounting -- Mount the enthalpy switch/receiver
in a location
where the outdoor air can be smnpled (such as the outdoor air
intake). The enthalpy switch/receiver
is not a NEMA 4 enclosure and should be mounted in a location that is not exposed to
outdoor elements such as rain, snow, or direct sunlight. Use
two field-supplied no. 8 x 3/4-in. TEK screws. Insert the screws
through the holes in file sides of the enthtflpy switch/receivel:
A closed contact indicates that outside air is preferred to the
mtum ail: An open contact indicates that the economizer
should remain tit minimum position.
Mount the enthalpy sensor in a location where the indoor air
can be sampled (such as the return air duct). The enflialpy
sensor is not a NEMA 4 enclosure trod should be mounted in a
location flint is not exposed to outdoor elements such as rain or
snow. Use two field-supplied no. 8 x 3/4-in. TEK screws. Insert
the screws through the holes in the sides of the enthalpy sensol:
Outdoor
Air
Enthalpy
Sensor/Enthalpy
Controller
(HH57AC077)
-- To wire the outdoor air enthtflpy sensor,
perform file following (see Fig. 28 and 29):
NOTE: The outdoor air sensor can be removed from file back
of the enthalpy controller and mounted remotely.
1. Use a 4-conductor, 18 or 20 AWG cable to connect the
enthalpy control to the PremierLink controller and power
transformeg
Wiring -- Carrier recommends
the use of 18 to 22 AWG
twisted pair or shielded cable for all wiring. All connections
must be made with l/4-in, female spade connectol.s.
The PremierLink TM board provides 24 vac to power the
enthalpy switch/receivel: Connect the GND and 24 VAC terminals on the enthalpy switch/receiver
to the termimfls on the
transformer On some applications, the power from the economizer harness can be used to power the enthalpy switch/
receivel: To power the enthalpy switch/receiver
from the economizer harness, connect power of the enthalpy switch/receiver
to the red and brown wires (1 and 4) on the economizer
hmness.
2.
Connect the LOW Enthalpy
terminal on the enthalpy
switch/receiver to J4 -- pin 2 of the PremierLink control on the
HVAC unit. The switch can be powered through the PremierLink control bo_ud if desired. Wire the 24 VAC terminal on the
enthalpy switch/receiver
to J4 -- pin 1 on the PremierLink
control. Wire file GND terminal on the enthalpy switch/
receiver to Jl -- pin 2 on the PremierLink
control. The HI
Enthalpy terminal is not used. See Fig. 27.
Connect the following 4 wires from the wire harness
located in rooftop unit to the enthtdpy controller:
a. Connect the BRN wire to the 24 vac terminal (TRI)
on enthalpy control and to pin 1 on 12-pin harness.
b. Connect the RED wire to the 24 vac GND terminal
(TR) on enthalpy sensor and to pin 4 on 12-pin
harness.
c. Connect the GRAY/ORN
wire to J4-2 on PremierLink controller and to terminal (3) on enthalpy
sensoE
d. Connect the GRAY/RED wire to J4-1 on PremierLink controller and to terminal (2) on enthtdpy sensol:
NOTE: Use the two gray wires provided from the control
section to the economizer to connect PmmierLink controller to
terminals 2 and 3 on enthalpy sensol:
Return Air Enthalpy Sensor -- Mount the return-air enthalpy
sensor (HH57AC078)
in file return-air duct. The return air
sensor is wired to the enflialpy controller (HH57AC077).
The
outdoor enthalpy changeover set point is set at the controllel:
Connect the 4-20 mA IN terminal on the enthalpy switch/
receiver to the 4-20 mA OUT terminal on the return air enthalpy sensol: Connect the 24-36 VDC OUT terminal on the
enthalpy switch/receiver
to the 24-36 VDC IN terminal on the
return air enthalpy sensor See Fig. 27.
To wire the return air enthalpy
ing (see Fig. 28):
Enthalpy Switch/Receiver
Jumper Settings -- There me two
jumpers. One jumper determines the mode of the enthalpy
switch/receivel:
The other jumper is not used. To access the
jumpers,
remove the 4 screws holding the cover on the
enthalpy switch/receiver
and then lemove the covel: The factory settings for the jumpers are M 1 and OFF.
The mode jumper should be set to M2 for differentkfl enthalpy control. The factory test jumper should remain on OFF
or the enthtflpy switch/receiver
will not calculate enthalpy.
sensor, perform the follow-
1. Use a 2-conductor,
18 or 20 AWG, twisted pair cable to
connect the return air enthalpy sensor to the enthalpy
controllel:
Enthalpy Sensor Jumper Settings -- There me two jumpers.
One jumper determines the mode of the enthalpy sensor. The
other jumper is not used. To access the jumpers, remove the
2O
2.
At the enthalpy control remove the
resistor fi_m the (SR) and (+) terminals.
factory-installed
3.
Connect the field-supplied
RED wire to (+) spade
connector on the return air enthalpy sensor and the (SR+)
terminal on the enthalpy controllel: Connect the BLK
wire to (S) spade connector on the mtum air enthalpy
sensor and the (SR) terminal on the enthalpy controller.
120 VAC
LINE VOLTAGE
k._,.J_Aj--
24 VAC OUTPUT FROM N/C CONTACT WHEN
THE
ORN
OUTDOOR ENTHALPY IS LESS THAN THE
"
INDOOR ENTHALPY
F
/
24 VAC OUTPUT FROM N/O CONTACT WHEN THE
INDOOR ENTHALPY IS GREATER THAN THE
OUTDOOR ENTHALPY
HI LOW GND 24
ENTHALPY
VAC
"_,
33CSENTHSW
4-20 24-36
rnA VDC
IN
OUT
24-36 4-20
VDC
rnA
IN OUT
/
_,
33CSENTSEN
/
J
JUMPER
SE_INGS
FOR 33CSENTHSW
JUMPER SETTINGS
FOR 33CSENTSEN
O
ol
[ °1[a°°°l [ioOO
I [ioO
oO
oO
1
O010
LEGEND
N/C -N/O --
_
OOO
Normally Closed
Normally Open
Fig. 27 -- Differential Enthalpy Control Wiring
HH57AC077
ENTHALPY
CONTROLAND
OUTDOOR AIR
ENTHALPY SENSOR
ENTHALPYCONTROLLER
TRI-_ITR1
i'-LI,_IL_I
BRN
RED
A(_Csorh+E3-SR¢-I+[]- --1
+ ENTHALPY
(OUTDOORAIR
I
SENSOR)
BLK _S
RED
I
[]
[]
S (RETURN AIR I
+ ENTHALPY
SENSOR
GRAY/ORN
LWIRE
LED
GRAY/RED
JlN
HARNESS
HH57AC078 ENTHALPY
SENSOR (USED WITH
ENTHALPY CONTROL
FOR DIFFERENTIAL
ENTHALPY OPERATION)
UNIT
NOTES:
1. Remove factory-installed jumper across SR and + before connecting wires from return air sensor.
2, Switches shown in high outdoor air enthalpy state. Terminals 2
and 3 close on low outdoor air enthalpy relative to indoor air
enthalpy.
3. Remove sensor mounted on back of control and locate in outside airstream.
Fig. 28 -- Outdoor and Return Air Sensor Wiring
Connections for Differential Enthalpy Control
÷
MOUNTING
PLATE
4!
Fig. 29Differential Enthalpy Control,
Sensor and Mounting Plate (33AMKITENT006)
21
OPTIONAL
ECONOMISERIV
AND ECONOMISER2
-See Fig. 30 and 31 for EconoMiSerIV
component locations.
See Fig. 32 for EconoMi$er2 component locations.
FRAME
TOP
NOTE: These instructions
are for installing the optiomd
EconoMiSerIV
and EconoMiSer2 only. Refer to the accessory
EconoMiSerIV
or EconoMiSer2 installation instructions when
field installing an EconoMi$erIV
or EconoMiSer2 accessory.
ECONOMI$ER2
SCREWS
SCREWS
To complete installation of the optional EconoMiSerIV. perform the following procedure.
1. Remove the EconoMiSerlV
hood. Refer to Step 8 -Install Outdoor-Air Hood on page 13 for information on
removing and inst_flling the outdoor-air hood.
2.
Relocate
position
Fig. 30.
Fig. 32 -- EconoMi$er2
outdoor air temperature sensor from shipping
to operation position on EconoMiSerIV.
See
Table 7 -- Outdoor
Component
Air Damper
DAMPER
I
IMPORTANT:
Failure to relocate the sensor will result
in the EconoMiSerIV
not operating properly.
3.
Re-install economizer
4.
Install all EconoMiSerIV
accessories.
wiring is shown in Fig. 33. EconoMiSer2
in Fig. 34.
I
I
LEAKAGE
4500
0,040
/\
/
SCREWS
\
(INSTALLED
SENSOR
OPERATION
POSiT,ON)
0.6
0.8
1.0
1.2
35
53
65
75
90
102
LOW TEMPERATURE
COMPRESSOR
Locations
SUPPLY AIR
TEMPERATURE
LOCATION
SENSOR
TEMPERATURE
-58
-40
-22
-4
14
32
50
68
77
86
104
122
140
158
176
185
194
212
230
246
257
266
284
302
FLANGE
(HIDDEN)
Locations
6000
0,070
7200
0,090
7500
0.100
9000
0,110
10,000
0,120
11,250
0,140
with
end"
Low Temperature
Compressor
Lockout Switch
-The
EconomiSerIV
is equipped with an ambient temperature lockout switch located in the outdoor alLstream which is used to
lockout the compressoLs below a 42 F ambient temperature.
See Fig. 30.
Table 9 -- Supply Air Sensor Temperature/
Resistance Values
--
ECONOMI$ERIV
Fig. 31 -- EconoMiSerlV
Component
Side View
5400
0,060
The temperature sensor looks like an eyelet terminal
wires running to it. The sensor is located in the "crimp
and is settled from moisture.
LOCKOUT SWITCH
EconoMi$erlV
Component
End View
5000
0.050
Supply Air Temperature
(SAT) Sensor
-- The supply air
temperature sensor is a 3 K thermistor located at the inlet of the
indoor fan. See Fig. 31. This sensor is factory installed. The operating range of temperature measmement is 0 ° to 158 IF. See
Table 9 for sensor temperature/resistance v_dues.
,/
Fig. 30-
(in. wg)
0.4
ECONOMI$ERIV
STANDARD
SENSORS
Outdoor Air Temperature
(OAT) Sensor -- The outdoor air
temperature sensor (HH57AC074)
is a 10 to 20 mA device
used to measure the outdoor-air temperature. The outdoor-air
temperature is used to determine when the EconoMiSerIV can
be used for free cooling. The sensor must be field-lelocated.
See Fig. 30. The operating range of temperature measurement
is 40 to 100E
AIR
TEMPERATURE
FRAME
STATIC PRESSURE
0.2
CFM
EconoMiSerIV
wiring is shown
OUTDOOR
ECONOMI$ERIV
Leakage
Table 8 -- Return Air Pressure Drop (in. wg)
hood.
Outdoor air leakage is shown in Table 7. Return air pressure
drop is shown in Table 8.
SCREWS
(cfm)
Locations
--
22
(F)
RESISTANCE (ohms)
200,250
100,680
53,010
29,091
16,590
9,795
5,970
3,747
3,000
2,416
1,597
1,080
746
525
376
321
274
203
153
116
102
89
70
55
YEL
PNK
-BLU
RED
--ORN
{FIELD
ACCESSORY)
REI4OTEWIN
POSITION
_NI
_
4,
ROT
_
,__,
BLK
_V
EXHsEI
]OV
ECONOMISER
BOARD
SENSOR (3k Ohm)
B_.X--I-RE
PO_
D-
P_
,AOSE._O
L_k_
PLI*R
(NOT USED)
MAIN
LP
L_
OAT TEWP/
P(LI_8
TO
Ii
)
L-
E_INALPY_LH_ _S+OSE_SOR
I
AO
_4,.n_
_
_
_ ,0v
0
,[
RCV
_DCV
,[
2V_ovSET
Pckt - 5
CONTROL
BOX
PLI
"9
I I
DLU
I I
P"--_
) FIELD
PL1
SPLICE
LALS
=I
L (
(
PR1
=R
PLI
_ID
(ROT
DRN
FIE'LLD SPLICE
RED
)
USED)
EDONOMI
LEGEND
DCV -- Demand Controlled Ventilation
IAQ -- Indoor Air Quality
LALS-Low Temperature Compressor
Lockout Switch
OAT -- Outdoor-Air Temperature
POT -- Potentiometer
Potentiometer Default Settings:
Power Exhaust
Middle
Minimum Pos.
Fully Closed
DCV Max.
Middle
DCV Set
Middle
Enthalpy
C Setting
ZER
NOTOR
NOTES:
1, 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb,
2, If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3, For field-installed
remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position,
Fig. 33 -- EconoMi$erlV Wiring
4
3
7
RED
2
500 OHM
8
R ESISTO R---"L_
PINK
6
NOTE 1
BLUE
RUN
5
OAT
BLACK
NOTE2
1
/
10
50HJ540573
ACTUATOR
ASSEMBLY
11
9
WHITE
DIRECT DRIVE
ACTUATOR
12
ECONOMI$ER2
LEGEND
OAT -- Outdoor Air Temperature Sensor
NOTES:
1. Switch on actuator must be in run position for economizer to operate.
2. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.
Fig. 34 -- EconoMi$er2 Wiring
23
PLUG
ECONOMISERIV
CONTROL MODES
Differential DLy Bulb Control -- For differential dry bulb
control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory return air sensor (part number
CRTEMPSN002A00).
The accessory sensor must be mounted
in the return airstream. See Fig. 37.
IMPORTANT:
The optional
EconoMiSer2
does not
include a controllel: The EconoMiSer2 is operated by a 4 to
20 mA signal from an existing field-supplied
controller
(such as PremierLink TM control). See Fig. 34 for wiring
information.
In this mode of operation, the outdoor-tfir temperature is
compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of
changeover control, turn the free cooling/enthalpy
setpoint potentiometer fully clockwise to the D setting. See Fig. 35.
Determine the EconoMiSerIV control mode before set up of
the control. Some modes of operation may lequile diffelent sensors. Refer to Table 10. The EconoMiSerlV
is supplied from the
factory with a supply air temperature sensor, a low temperature
compressor
lockout switch, and an outdoor air temperature
sensol: This _fllows for operation of the EconoMiSerlV
with
outdoor air &y bulb changeover control. Additional accessories can be added to allow for different types of changeover
control and operation of the EconoMiSerlV
and unit.
Table 10 -- EconoMi$erlV
APPLICATION
Sensor Usage
ECONOMI$ER
IV WITH OUTDOOR
DRY BULB SENSOR
Accessories
Outdoor Air
Dry Bulb
Differential
Dry Bulb
Single
002 for DCV
Control using a
Wall-Mounted
CO2 Sensor
CO2 for DCV
Control using a
Duct-Mounted
CO2 Sensor
AIR
Required
None. The outdoor air dry bulb sensor
is factory installed.
FAN SET POINT
CRTEMPSN002A00*
WHEN EXHAUST
CONTACT tS MADE
HH57AC078
Enthalpy
Differential
Enthalpy
Outdoor Enthalpy Changeover
-- For enthalpy control, accessory
enthalpy
sensor (p_ut number
HH57AC078)
is
required. Replace the standard outdoor dry bulb temperature
sensor with the accessory enthalpy sensor in the same mounting location. See Fig. 30. When the outdoor air enthalpy rises
above the outdoor enthalpy changeover set point, the outdoorair damper moves to its minimum position. The outdoor
enthalpy changeover set point is set with the outdoor enth_dpy
set point potentiometer on the EconoMiSerIV
controllel: The
set points are A, B, C, and D. See Fig. 38. The factory-installed
620-ohln jumper must be in place across terminals SR and SR+
on the EconoMiSerIV controllel: See Fig. 33 and 39.
HH57AC078
and
CRENTDIF004A00*
MINIMUM
POSITION SETTING
MAXIMUM
DEMAND CONTROL
VENTILATION SET POINT
33ZCSENCO2
and
33ZCASPCO2**
33ZCSENCO2t
LED LIGHTS
DEMAND CONTROL
VENTILATION
INPUT
IS ABOVE SET POINT
CRCBDIOX005A00tt
VENTILATION
*CRENTDIF004A00
and CRTEMPSN002A00
accessories
are used on
many different base units. As such, these kits may contain parts that
will not be needed for installation.
1-33ZCSENCO2
is an accessory CO2 sensor.
**33ZCASPCO2
is an accessory
aspirator
box required
for ductmounted applications.
1-]-CRCBDiOX005A00
is an accessory that contains both 33ZCSENCO2
and 33ZCASPCO2
accessories.
SET POINT
LED LIGHTS WHEN
OUTDOOR AiR iS
SUITABLE FOR
FREE COOLING
FREE COOLING/ENTHALPY
CHANGEOVER SET POINT
Fig. 35 --
Outdoor Dry Bulb Changeover
-- The standard controller is
shipped from the factory configured
for outdoor dry bulb
changeover control. The outdoor air and supply air temperature
sensol_ are included as stan&trd. For this control mode, the
outdoor temperature is compmed to an adjustable set point
selected on the control. If the outdoor-air temperature is above
the set point, the EconoMiSerIV
will adjust the outside air
dampers to minimum position. If the outdoor-air temperature is
below the set point, the position of the outdoor air dampers will
be controlled to provide free cooling using outdoor air. When
in this mode, the LED next to the free cooling set point potentiometer will be on. The changeover
temperature set point is
controlled by the free cooling set point potentiometer
located
on the control. See Fig. 35. The sc_de on the potentiometer is A,
B, C, and D. See Fig. 36 for the conesponding
temperature
changeover v_dues.
EconoMi$erlV
Controller
and LED Locations
[
18-!_
Potentiometer
L
17-i
16_ --
LED ON
- LED OFF
<15" I
E14- !
LED OFF LED O;
13"
_'-_L_
12-
4O
45
50
55
60
65
70
75
LED ON- --
80
85
90
DEGREES FAHRENHEIT
Fig. 36 -- Outside Air Temperature
Changeover Set Points
24
95
100
Differential Enthalpy Control
-- For differential
enthalpy
control, the EconoMiSerIV
controller uses two enthalpy sensors (HH57AC078
and CRENTDIF004A00),
one in the outside air and one in the return airstream on the EconoMiSer[V
frame. Tile EconoMiSerIV
controller compares the outdoor air
enthalpy to file return air enthalpy to determine EconoMiSer[V
use. Tile controller selects the lower enthalpy air (return or
outdoor) for cooling. For example, when file outdoor air has a
lower enthalpy than the return air and is below the set point, the
EconoMiSerIV opens to bring in outdoor _firfor fiee cooling.
Replace the standard outside air d U bulb temperature sensor with the accessory enthalpy sensor in the stone mounting
location. See Fig. 30. Mount the return air enth_dpy sensor in
the return airstremn. See Fig. 37. Tile outdoor enth_dpy
changeover set point is set with the outdoor enthalpy set point
potentiometer
on the EconoMiSerIV
controller. When using
this mode of changeover control, turn the enthalpy set point
potentiometer fully clockwise to the D setting.
NOTE: Remove
620-ohm resistor if differentkd
enthalpy
sensor is installed,
Indoor Air Ouality (IAO) Sensor Input -- Tile IAQ input
can be used for demand control ventilation control based on the
level of CO2 measured in the space or return air duct.
RETURN AIR
TEMPERATURE
AND ENTHALPY
SENSOR
IAQ
SENSOR
Mount the accessory IAQ sensor according to manufacturer
specifications. The IAQ sensor should be wired to the AQ and
AQI terminals of the controllel: Adjust the DCV potentiometers to conespond to the DCV voltage output of the indoor air
quality sensor at the use>determined
set point. See Fig. 40.
Fig. 37 -- Return
Sensor
Air Temperature
or Enthalpy
Mounting
Location
If a separate field-supplied transformer is used to power the
IAQ sensol: the sensor must not be grounded
or the
EconoMiSer[V control board will be &imaged.
CONTROL
85
90
95
100
105
110
(29)
(32)
(35)
(38)
(41)
(43)
CONTROLPOINT
CURVE
APPROXI°F
(°C)
AT 50% RH
A
73(23)
B
70(21)
C
D
67119 )
63(17)
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
_
HIGH
i
35
40
45
50
55
60
65
70
75
80
85
90
95
100
\
105
(2)
(4)
(7)
(10)
(13)
(16)
(18)
(21)
(24)
(27)
(29)
(32)
(35)
(38)
(41)
APPROXIMATE
DRY BULB TEMPERATURE--
Fig. 38 --
Enthalpy
°F (°C)
Changeover
25
Set Points
CURVE
110
(43)
LIMIT
at least 10 F temperature difference between the outdoor and
return-air temperatures.
To determine the minimum position setting, perform the
following procedure:
T
.......
1. Calculate the appropriate mixed air temperature
following formula:
OA
RA
(To x I---_T ) + (TR x _
) = TM
@
To = Outdoor-Air Temperature
OA = Percent of Outdoor Air
2
TR = Return-Air Temperature
RA = Percent of Return Air
5
.....
_
FFr_I
using the
4
TM = Mixed-Air
Temperature
As an example, if local codes require 10% outdoor
during occupied conditions, outdoor-air temperature
60 IF.and return-air temperature is 75 E
EF1
air
is
(60 x. 10) + (75 x .90) = 73.5 F
Fig. 39-
EconoMi$erlV Controller
2.
Disconnect
TI.
the supply-air
3.
Ensure that
terminals P
used, make
Fig. 33 and
turned fully
Connect 24
the factory-installed jumper is in place across
and PI. If remote &tmper positioning is being
sure that the termimds are wired according to
that the minimum position potentiometer
is
clockwise.
vac across termimds TR and TRI.
CO 2 SENSOR MAX RANGE SETTING
6000
5000
4.
z
Q
4000
+
3000
2000
<
__
+
1100 ppm
_
9o0 ppm
Cmefully adjust the minimum position potentiometer
until the measured mixed-air temperature matches the
calculated v_due.
6.
Reconnect
2
3
4
5
6
7
8
RATE
sensor to terminals
T and TI.
To control the minimum dalnper position remotely, remove
the factory-installed jumper on the P and PI terminals on the
EconoMiSerIV
controllel: Wire the field-supplied potentiometer to the P and PI terminals on the EconoMiSerIV
controllel:
See Fig. 39.
Fig. 40 -- 002 Sensor Maximum Range Setting
Exhaust Set Point Adjustment
-- The exhaust set point will
determine when the exhaust fan runs based on dmnper position
(if accessol 7 power exhaust is installed). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometel:
See Fig. 35. The set point replesents file &tmper position above
which the exhaust fan will be turned on. When there is a c_dl
for exhaust, the EconoMi$erlV
controller provides a 45 _+15
second delay before exhaust fan activation to allow the dampers to open. This delay _dlows the damper to reach the appropriate position to avoid unnecessary fan overload.
Damper Movement -- Damper movement from full open to
full closed (or vice versa) takes 21/2 minutes.
Thermostats
-- The EconoMi$erIV
control works with conventional thermostats that have a YI (cool stage 1), Y2 (cool
stage 2), WI (heat stage 1), W2 (heat stage 2), and G (fan). The
EconoMi$erIV
control does not support space temperature
sensors. Connections are made at the thermostat terminal connection board located in the main control box.
Minimum Position Control -- There is a minimum damper
position potentiometer
on the EconoMi$erlV
controllel: See
Fig. 35. The minimum &tmper position maintains the minimum airflow into the building during the occupied period.
Occupancy Control -- The factory default configuration for
the EconoMi$erIV
control is occupied mode. This is implemented by the RED jumper at TB2-9 to TB2-10. When unoccupied mode is desired, remove the RED jumper and install a
field-supplied timeclock function between TB2-9 and TB2-10.
When the timeclock contacts are open, the unit control will be
in unoccupied mode; when contacts are closed, file unit control
will be in occupied mode.
Demand Controlled Ventilation (DCV) -- When using the
EconoMi$erIV
for demand controlled ventilation, there are
some equipment selection criteria which should be considered.
When selecting the heat capacity and cool capacity of the
equipment, the maximum ventilation rote must be evaluated for
design conditions. The maximum damper position must be calculated to provide the desired fresh all:
When using demand ventilation, the minimum dmnper position represents the minimum ventilation position for VOC
(volatile organic compound)
ventilation requilements.
The
maximum demand ventilation position is used for fully occupied ventilation.
When demand
minimum position
cupied ventilation
position should be
the supply-air
Remote control of the EconoMi$erIV
dmnper is desirable
when
requiring
additional
temporm 7
ventilation.
If a
field-supplied remote potentiometer (Honeywell part number
$963B1128) is wired to the EconoMiSerIV
controller, the minimum position of the &tmper can be controlled from a remote
location.
1000
DAMPER VOLTAGE FOR MAX VENTILATION
T and
5.
1000 ppm
Z
z
800 ppm
sensor from terminals
ventilation control is not being used, the
potentiometer should be used to set the ocposition. The maximum demand ventilation
turned fully clockwise.
Adjust the minimum position potentiometer
to allow the
minimum mnount of outdoor air. as required by local codes, to
enter the building. Make minimum position adjustments with
26
Typically
the maximum ventilation rate will be about 5 to
10% more than the typical cfm required per person, using
nonnal outside air design criteria.
since the CO2
sensor
voltage will be ignored by the
EconoMi$erIV controller until it rises above the 3.6 volt setting
of the minimum position potentiometer.
A proportional anticipato U strategy should be token with
the following conditions: a zone with a large area, varied occupancy, and equipment that cannot exceed the requited ventilation rate at design conditions. Exceeding the required ventilation rate means the equipment can condition tfir at a maximum
ventilation rate that is greater than the requited ventilation rate
for maximum occupancy. A propot_tional-anticipatou
strategy
will cause the fresh air supplied to increase as the room CO2
level increases even though the CO2 set point has not been
reached. By the time the CO: level teaches the set point, the
damper will be at maximum ventilation and should maintain
the set point.
In order to have the COo_ sensor control the economizer
damper in this manner, first determine the &mper voltage output for minimum or base ventilation. Base ventilation is the
ventilation required to remove contmninants during unoccupied periods. The following equation may be used to determine
the percent of outside-air entering the building for a given
damper position. For best results there should be at least a
10 degree difference in outside and return-air temperatures.
Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation
potentiometer to this position. Do not set to the maximum position as this can result in over-ventilation to the space and potential high-humidity levels.
CO.2 Sensor Configuration
-- The CO2 sensor has preset
stan&trd voltage settings that can be selected anytime after the
sensor is powered up. See Table 11.
Use setting 1 or 2 for Carrier equipment. See Table 11.
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
To = Outdoor-Air Temperature
OA = Percent of Outdoor Air
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.
The same equation can be used to determine the occupied or
maximum ventilation rate to the building. For example, an output of 3.6 volts to the actuator provides a base ventilation rate
of 5% and an output of 6.7 volts provides the maximum ventilation rate of 20% (or base plus 15 cfm pet person). Use Fig. 40
to determine the maximum setting of the CO: sensot: For example, a 1100 ppm set point relates to a 15 cftn per person design. Use the 1100 ppm curve on Fig. 40 to find the point when
the CO2 sensor output will be 6.7 volts. Line up the point on the
graph with the left side of the chart to determine that the range
configuration for the CO2 sensor should be 1800 ppm. The
EconoMiSerIV
controller will output the 6.7 volts from the
CO2 sensor to the actuator when the CO2 concentration in the
space is at 1100 ppm. The DCV set point may be left at 2 volts
SETTING
EQUIPMENT
1
2
OUTPUT
Proportional
Interface w/Standard
Building Control System
Proportional
--
002
Press Mode twice. The STDSET
Menu will appear.
3.
Use the Up/Down
Table 11.
4.
Press Enter to lock in the selection.
5.
Press Mode to exit and resume normal operation.
button to select the preset number. See
The custom settings of the CO2 sensor can be changed anytime after the sensor is energized. Follow the steps below to
change the non-standard settings:
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
OA
RA
(To x l---ff_-) + (TR x _
) = TM
Table 11
2.
2.
Press Mode twice. The STDSET
3.
Use the Up/Down
and press Enter
4.
Use the Up/Down button to toggle through each of the
nine variables, starting with Altitude, until the desired setting is reached.
5.
Press Mode to move through the variables.
6.
Press Enter to lock in the selection,
continue to the next variable.
Dehumidification
mation fiom
on any zone
Menu will appeat:
button to toggle to the NONSTD
of Fresh
Air with
then press Mode to
DCV
Control
--
Infor-
ASHRAE
indicates
that the lmgest humidity
load
is the fresh air introduced.
For some applications,
a field-supplied
energy recovery
unit can be added to reduce
file moisture
content
of the fresh air being brought
into the
building
when the enthalpy
is high. In most cases, the normal
heating
and cooling
processes
am morn than adequate
to
remove
file humidity
loads
for most
commemi_fl
applications.
If normal rooftop heating and cooling
operation
is not adequate for the outdoor humidity
level, an energy
recovery
unit
and/or a dehumidification
option should be considered.
Sensor Standard Settings
VENTILATION
RATE
(cfm/Pereon)
ANALOG
OUTPUT
CO2
CONTROLRANGE
(ppm)
OPTIONAL
RELAY SETPOINT
(ppm)
RELAY
HYSTERESIS
(pprn)
Any
0-10V
4-20 mA
0-2000
1000
5O
Any
2-10V
7-20 mA
0-2000
1000
5O
0-2000
1100
5O
3
Exponential
Any
0-10V
4-20 mA
4
Proportional
15
0-10V
4-20 mA
0-1100
1100
5O
Proportional
20
0-10V
4-20 mA
0- 900
900
5O
15
0-10V
4-20 mA
0-1100
1100
5O
20
0-10V
4-20 mA
0- 900
900
5O
5000
5OO
5
Economizer
6
Exponential
7
Exponential
8
Health & Safety
Proportional
0-10V
4-20 mA
0-9999
9
Parking/Air Intakes/
Loading Docks
Proportional
0-10V
4-20 mA
0-2000
LEGEND
ppm --
menu
Parts Per Million
27
7OO
5O
Step 11 -- Install
Humidistat
for Optional
MoistureMi$er TM Package-MoistureMiSer dehumidification package operation can be controlled by field inst;dlation ofa Canier-approved
humidistat, To install the humidistat perform the following procedure:
1, Locate humidistat on a solid interior wall in the conditioned space. Location should be a well ventilated area
to sense average humidity.
2,
Route thermostat cable or equivalent single leads of cololed wire from Humidistat termimds through conduit in
unit to the low voltage connection on the 2-pole terminal
strip (TB3) as shown in Fig, 41 and 42, Remove the
jumper from TB3, See Fig. 43 for operational diagram.
Fig. 42 -- Typical MoistureMi$er Dehumidifcation
Package Control Box
MOISTUREMI$ER
_'_YEL-
YEL.
/
BLK
i
TO CRANKCASE
/ HEATER CIRCUITS
BLK_
TRAN
24V
BLK
TRAN_
GRN YEL
GRN YEL
J
CB
LLSV
LPS
TB
TRAN
------
LEGEND
Circuit Breaker
Liquid Line Solenoid Valve
LowPressure Switch
Terminal Block
Transformer
BLK
BLK--
3 2AMPS
_
L
S LPS1
8
LLSVLsw2
_
S_SLPS2
•
L
FACTORY INSTALLED JUMPER
(OR HUMIDISTAT IF USED)
Fig. 41 -- Typical MoistureMi$er Dehumidification Package
Humidistat Wiring Schematic (460 V Unit Shown)
28
CONDENSER
l
COIL
,
DISCHARGE
OUTDOORAIR
COIL
EQUALIZER
LINE
SUCTION
J
p-CCH
CRANKCASE
HEATER
LIQUID
EVAPORATOR
COIL
3-WAY
VALVE
\°COMPRESSOR
S-LPS _
SUB COOLER CONTROL
LOW PRESSURE SWITCH
TXV
INDOOR AIR
EQL
TXV --
Thermostatic
Expansion Valve
Fig. 43 -- MoistureMi$er
29
TM
Operation
Diagram
START-UP
Use the following information and St_ut-Up Checklist
page CL-I to check out unit PRIOR to start-up.
on
-- Check that unit has been installed in
with these installation instructions and all applica-
INTERNAL
WIRING -- Check all electric;d
unit control boxes; tighten as required.
CRANKCASE
HEATER--Heater
there is power to unit and compressor
connections
in
EVAPORATOR
FANFan belt and variable pulleys are
factory installed. Remove
tape from the fan pulley. See
Table 12 for air quantity limits. See Tables 13-16 for fan performance data. Be sure that rims rotate in the proper direction. See
Table 17 for static pressure information for accessories and
options. See Table 18 for fan rpm at various fan motor pulley
settings. See Tables 19 and 20 for evaporator fan motor data.
To alter fan performance,
see Evaporator-Fan
Performance
Adjustment section, page 37.
I
COMPRESSOR
MOUNTING
-- Compressors
are intern_dly spring mounted. Do not loosen or remove compressor holddown bolts.
REFRIGERANT
SERVICE PORTS -- Each refrigerant system has a total of 3 Schrader-type service gage ports. One port
is located on the suction line, one on the complessor discharge
line, and one on the liquid line. In addition Schmder-type
v_dves are located underneath the low-plessure
switches. Be
sure that caps on the ports are tight.
Table
COMPRESSOR
ROTATION
-- It is important to be certain
the compressors are rotating in the proper direction. To determine whether or not compressors
tue rotating in the proper
direction:
pressure
2.
Energize the compressol:
3.
The suction pressure should drop and the discharge
sure should rise, as is normal on any start-up.
pres-
If the suction pressme does not drop and the discharge
sure does not rise to normal levels:
pres-
1. Note that the evaporator
the wrong direction.
2.
fan is probably
power leads.
After a few minutes of reverse operation, the scroll compressor internal overload protection will open, which will activate the unit's lockout and requires a manual reset. Reset is accomplished by turning the thermostat on and off.
is energized as long as
is not operating.
service gages to suction and discharge
Turn on power to the compmssoc
NOTE: When compressors are rotating in the wrong direction,
the unit will have increased noise levels and will not provide
heating and cooling.
IMPORTANT: Unit power must be on for 24 hom_ prior to ]
start-up. Otherwise, dmnage to compressor may result.
1. Connect
fittings.
Reverse any two of the incoming
4.
The suction and discharge pressure levels should now move
to their normal start-up levels.
Unit Preparation
accordance
ble codes.
3.
12 -- Air Quantity
UNIT
50TM
MINIMUM CFM
016
020
025
028
4500
5400
6000
7000
Limits
MAXIMUM
CFM
7,500
9,000
10,000
11,250
CONDENSER
FANS AND MOTORS -- Fans and motors
are factory set. Refer to Condenser-Fan
Adjustment section
(page 38) as required.
RETURN-AIR
FILTERS -- Check that correct filtel_ are installed in filter tracks. See Table 1. Do not operate unit without
return-air filters.
OUTDOOR-AIR
INLET SCREENS
-- Outdoor-air
screens must be in place before operating unit.
_dso rotating in
Turn off power to the unit.
3O
inlet
Table 13 -- Fan Performance -- 50TM016*
AVAILABLE
AIRFLOW
(Cfm)
0.2
Rpm
753
747
741
735
759
790
821
852
883
914
4500
4800
5100
5700
6000
6300
6600
6900
7200
7500
EXTERNAL
Watts
1307
1384
1465
1659
1854
2088
2340
2611
2903
3215
Bhp
1,53
1,62
1,72
1,95
2,18
2.45
2.74
3.06
3,40
3,77
Rpm
753
747
752
805
832
860
888
917
946
975
Watts
1307
1384
1500
1895
2118
2360
2621
2900
3200
3521
Bhp
1.53
1.62
1.76
2.22
2.48
2.77
3.07
3.40
3.75
4.13
Rpm
784
806
828
876
901
926
952
979
1006
1033
AVAILABLE
AIRFLOW
(Cfm)
1.2
Rpm
993
1009
1026
1064
1083
1104
1125
1147
1170
1193
4599
4809
5100
5700
6000
6300
6600
6900
7200
7500
Watts
2133
2319
2521
2975
3228
3501
3791
4101
4431
4781
Bhp
2.50
2.72
2.96
3,49
3,79
4,11
4,45
4,81
5,20
5,61
Rpm
1055
1070
1086
1120
1139
1158
1178
1199
1221
1243
Watts
2394
2585
2794
3260
3520
3799
4095
4412
4749
5107
Rpm
1114
1127
1142
1174
1192
1210
1229
1249
1270
--
2,2
Rpm
Watts
1276
3509
1287
3721
1299
3949
1325
4458
1340
4741
1356
5043
..................
..................
..................
..................
4500
4800
5100
6700
6000
6300
6600
6900
7200
7500
Rpm
1397
1563
1745
2156
2388
2638
2906
3194
3501
3830
1,64
1,83
2,05
2,53
2,80
3.09
3,41
3,75
4,11
4,49
859
878
898
942
965
988
1013
1038
1063
1089
STATIC PRESSURE
1.6
Bhp
4,12
4,36
4.63
5.23
5.56
5.91
Rpm
Watts
1326
3805
1336
4020
1347
4253
1373
4772
1387
5060
...............
Bhp
4,46
4,72
4.99
5.60
5.93
Rpm
Watts
1375
4107
1384
4326
1395
4563
1418
5091
............
Bhp
1.92
2.12
2.34
2.84
3.12
3.43
3.75
4.10
4.47
4.86
Rpm
928
946
964
1004
1026
1048
1070
1094
1118
1142
Watts
1880
2060
2255
2696
2943
3208
3491
3794
4117
4461
Bhp
2.20
2.42
2.65
3.16
3.45
3.76
4.10
4.45
4.83
5.23
(in. wg)
1.8
2,0
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
2662
2859
3073
3551
3817
4102
4405
4728
5072
3,12
3,35
3,60
4,17
4,48
4,81
5,17
5.55
5.95
1170
1183
1196
1226
1243
1260
1278
1297
......
2938
3139
3359
3848
4119
4410
4720
5050
3.45
3.68
3.94
4.51
4.83
5.17
5.54
5.92
1224
1236
1248
1277
1292
1309
1326
--
3220
3427
3650
4151
4427
4724
5039
--
3.78
4.02
4.28
4.87
5.19
5.54
5.91
--
STATIC PRESSURE
2.8
Bhp
4,82
5,07
5.35
5.97
LEGEND
Bhp
-Watts--
1.0
Watts
1635
1808
1996
2423
2663
2920
3196
3492
3807
4143
Watts
EXTERNAL
2,6
2,4
0,8
Bhp
EXTERNAL
Bhp
2.81
3.03
3.28
3.82
4.13
4.46
4.80
5.18
5.57
5,99
(in, wg)
Watts
1.4
AVAILABLE
AIRFLOW
(Cfm)
STATIC PRESSURE
0.6
0.4
Rpm
Watts
1421
4414
1430
4638
1440
4879
.........
(in. wg)
3,0
Bhp
5.18
5.44
5.72
Rpm
1467
1475
......
Watts
4728
4955
3,2
Bhp
5.55
5,81
Rpm
1511
--
Watts
5047
--
Bhp
5.92
--
NOTES:
Brake Horsepower
Input Watts to Motor
1.
*Standard low-medium static drive range is 873 to 1021 rpm. Alternate highstatic drive range is 1025 to 1200. Other rpms require a field-supplied drive.
2.
Maximum
continuous
imum bhp
See page
continuous bhp for the standard motor is 6.13. The maximum
watts is 5180. Do not adjust motor rpm such that motor maxand/or watts is exceeded at the maximum operating cfm.
33 for general fan performance notes.
Table 14 -- Fan Performance -- 50TM020*
AVAILABLE
AIRFLOW
(Cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
0.2
Rpm
682
730
778
828
878
928
979
1030
1082
1134
Bhp
1,99
2,38
2,82
3,31
3,84
4,42
5,05
5.73
6.46
7.25
Rpm
1.4
Bhp
Watts
1675
2005
2373
2780
3227
3715
4245
4817
5433
6093
Watts
1086
1112
1142
1173
1207
1242
1279
1317
1356
1397
3,89
4.31
4.77
5.28
5.83
6.44
7.10
7.80
8,56
9.37
3275
3623
4010
4438
4906
5415
5966
6561
7198
7881
Rpm
760
802
846
892
938
985
1033
1082
1131
1180
Bhp
2.29
2.68
3.13
3.62
4.15
4.74
5.38
6.06
6.80
7.59
Watts
1922
2257
2630
3042
3494
3986
4521
5098
5718
6382
AVAILABLE
AIRFLOW
(Cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
0,4
Rpm
1.6
Bhp
Watts
1142
1167
1194
1224
1255
1289
1324
1360
1398
1438
4,24
4.66
5.12
5,63
6,19
6.80
7.45
8.16
8,93
9.74
3567
3915
4304
4733
5203
5714
6268
6865
7505
8190
Rpm
832
871
911
953
996
1040
1085
1131
1178
1226
EXTERNAL
EXTERNAL
0,6
Bhp
2.59
2.99
3.44
3.94
4.48
5.07
5.71
6.40
7.14
7.94
Watts
2177
2516
2893
3310
3766
4263
4801
5382
6007
6675
Rpm
901
935
972
1011
1051
1093
1136
1180
1225
1270
STATIC PRESSURE
Rpm
1.8
Bhp
Watts
Rpm
1197
1219
1245
1273
1302
1334
1368
1403
1440
1477
4,59
5.01
5.47
5.98
6,55
7.16
7.82
8.53
9,29
10.11
3864
4213
4602
5033
5504
6018
6573
7173
7815
8503
1223
1245
1270
1296
1326
1357
1389
1424
1460
......
LEGEND
Bhp
-Watts--
STATIC PRESSURE
0.8
Bhp
2,90
3,31
3,76
4,26
4,81
5,40
6,05
6.74
7.49
8.29
(in. wg)
1,0
Bhp
3.22
3.63
4.09
4.59
5.14
5.74
6.39
7.09
7.84
8.65
1.2
Watts
2441
2783
3164
3583
4043
4544
5086
5671
6299
6971
Rpm
965
997
1031
1067
1105
1144
1185
1227
1270
1313
Watts
2712
3057
3440
3863
4326
4830
5375
5964
6595
7271
1.9
Bhp
Watts
Rpm
2.0
Bhp
Watts
4,77
5.19
5.65
6,17
6,73
7.34
8.00
8.71
9,48
4015
4364
4754
5184
5657
6171
6728
7328
7972
1249
1270
1294
1320
1348
1379
1411
1445
1480
4,96
5.37
5.83
6,35
6,91
7.52
8.18
8.90
9,67
4167
4516
4906
5337
5810
6325
6883
7484
8129
Rpm
1027
1056
1087
1121
1156
1194
1232
1272
1313
1356
Bhp
3.56
3.97
4.43
4.93
5.49
6.09
6.74
7.44
8.20
9.01
Watts
2990
3337
3722
4148
4613
5120
5669
6260
6895
7574
(in. wg)
NOTES:
Brake Horsepower
Input Watts to Motor
1.
*Standard low-medium static drive range is 910 to 1095 rpm. Alternate highstatic drive range is 1069 to 1287 rpm. Other rpms require a field-supplied
drive.
2.
3!
Maximum continuous bhp is 5.90. The maximum continuous watts is
5180. Do not adjust motor rpm such that motor maximum bhp and/or
watts is exceeded at the maximum operating cfm.
See page 33 for general fan performance notes.
Table 15-
Fan Performance-
AVAILABLE
AIRFLOW
(Cfm)
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
0.2
Rpm
753
793
844
895
947
999
1052
1105
1158
Rpm
816
861
908
955
1004
1053
1103
1153
1204
1.2
Rpm
1089
1102
1136
1173
1211
1251
1292
1335
1378
Watts
2579
2959
3372
3817
4294
4803
5345
5919
6526
Bhp
3.06
3.51
4.00
4.53
5.09
5.70
6.34
7.02
7.74
Watts
3517
3891
4299
4739
5212
5718
6257
6830
7434
Bhp
4.17
4.62
5.10
5.62
8.18
8.78
7.42
8.10
8.82
2.2
Rpm
1332
1356
1381
1409
1440
1471
1505
1540
Wa_s
4750
5122
5519
5951
6417
6916
7449
8016
Rpm
884
925
968
1013
1058
1105
1152
1200
1249
EXTERNAL
1.4
Rpm
1125
1156
1188
1223
1259
1297
1337
1377
1419
Watts
3761
4132
4538
4977
5449
5954
6492
7063
7667
Bhp
4.48
4.90
5.38
5.90
8.48
7.08
7.70
8.38
9.10
AVAILABLE
AIRFLOW
(Cfm)
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Bhp
2.83
3.25
3.74
4.27
4.83
5.44
6.08
6.76
7.48
AVAILABLE
AIRFLOW
(Cfm)
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Watts
2385
2738
3151
3596
4073
4583
5125
5699
6306
EXTERNAL
0.4
Rpm
1180
1208
1239
1272
1308
1342
1380
1419
1460
EXTERNAL
2,4
Bhp
5.85
8.08
6.55
7.06
7.61
8.20
8.84
9.51
Rpm
Wa_s
1380
5015
1402
5375
1427
5770
1453
6199
1482
6663
1513
7161
1545
7693
............
Bhp
5.95
6.38
6.84
7,35
7.90
8.49
9.13
Rpm
1427
1447
1471
1496
1523
.........
.........
---
STATIC PRESSURE
0.6
Watts
2807
3186
3598
4042
4518
5027
5569
6142
6750
Bhp
3.33
3.78
4.27
4.80
5.36
5.96
6.61
7.29
8.01
Bhp
4.75
5.19
5.87
8.19
8.75
7.35
7.98
8.86
9.37
Bhp
8.25
8.88
7.14
7.65
8.20
Wa_s
3040
3418
3828
4271
4747
5255
5796
6369
6975
1.0
Bhp
3.61
4.05
4.54
5.07
5.63
6,23
6.88
7.56
8.27
Rpm
1010
1045
1082
1121
1162
1204
1247
1291
1336
Wat_
3277
3653
4062
4504
4978
5485
6025
6598
7203
Bhp
5.05
5.48
5.98
6.48
7.03
7.63
8.27
8.94
9.65
Rpm
1283
1308
1335
1365
1398
1429
1464
1501
1538
Watts
4506
4871
5271
5705
8172
8873
7207
7776
8377
Bhp
8.56
8.98
7.45
7.95
Rpm
1517
1535
---
Watts
5793
6144
---
Bhp
3.89
4.33
4.82
5.34
5.91
6.51
7.15
7.83
8.55
(in. wg)
1,8
Rpm
1232
1259
1288
1319
1352
1386
1423
1460
1499
STATIC PRESSURE
2.6
Watts
5272
5630
6022
6449
6911
0.8
Rpm
949
987
1026
1068
1111
1155
1200
1246
1293
STATIC PRESSURE
1.6
Watts
4008
4377
4780
5217
5888
6192
6729
7299
7902
(in. wg)
Watts
4255
4623
5025
5460
5929
6431
6967
7536
8138
2.0
Bhp
5.35
5.78
6.25
6.77
7.32
7.92
8.55
9.22
9.94
(in. wg)
Rpm
1472
1492
1514
1538
......
2,8
Watts
5531
5888
6276
6701
3.0
Bhp
6.87
7.29
---
NOTES:
1. Maximum continuous bhp for the standard motor is 8.7 (for 208/230 and
575-v units) and 9.5 (for 460-v units). The maximum continuous watts is
7915 (for 208/230 and 575-v units) and 8640 (for 230 and 460-v units).
Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
2. See page 33 for general fan performance notes.
LEGEND
Bhp
Watts
50TM025"
Brake Horsepower
Input Wattsto Motor
*Standard low-medium static drive range is 1002 to 1151 rpm. Alternate highstatic drive range is 1193 to 1369. Other rpms require a field-supplied drive.
32
Table 16 -- Fan Performance -- 50TM028"
AVAILABLE
AIRFLOW
(Cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
0.2
EXTERNAL
0,6
STATIC PRESSURE
0,8
(in. wg)
1.0
1.2
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
845
896
948
1001
1053
1106
1159
1213
1266
1293
3.26
3.82
4.43
5.11
5.85
6.65
7.52
8.45
9.45
9.97
2693
3156
3667
4226
4836
5498
6214
6984
7810
8245
909
956
1005
1054
1104
1155
1206
1257
1309
1334
3.60
4.17
4.80
5.49
6.23
7.04
7.92
8.86
9.87
10.40
2979
3450
3969
4537
5155
5824
6547
7325
8159
8597
969
1014
1060
1106
1154
1202
1251
1300
1350
1375
3.96
4.54
5.17
5.87
6.63
7.44
8.33
9.28
10.29
10.83
3272
3752
4278
4853
5478
6155
6886
7671
8511
8953
1028
1069
1112
1156
1202
1248
1295
1342
1391
1415
4.32
4.91
5.56
6.26
7.02
7.85
8.74
9.70
10.73
11,26
3574
4060
4593
5175
5808
6492
7229
8020
8868
9313
1083
1123
1163
1205
1248
1293
1338
1384
1431
1454
4.70
5.29
5.94
6.66
7.43
8.26
9.16
10.13
11.16
11.70
3883
4375
4915
5504
6142
6833
7577
8375
9229
9677
1137
1174
1213
1253
1294
1336
1380
1424
1470
1493
5.08
5.68
6.34
7.06
7.84
8.68
9.59
10.56
11.60
12.15
4,200
4,698
5,243
5,838
6,483
7,179
7,929
8,733
9,594
10,045
AVAILABLE
1.4
AIRFLOW
(Cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
0,4
EXTERNAL
STATIC PRESSURE
1.6
(in. wg)
1.8
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
1189
1224
1261
1299
1338
1379
1421
1464
1508
1530
5.47
6,08
6,75
7.47
8.26
9.11
10.02
11.00
12.05
12.60
4,524
5,026
5,577
6,177
6,828
7,530
8,286
9,096
9,963
10,417
1239
1272
1307
1344
1382
1421
1461
1503
1546
......
5.87
6.48
7.16
7.89
8.68
9.54
10,46
11,45
12.50
4,854
5,362
5,917
6,523
7,179
7,887
8,648
9,464
10,336
1288
1320
1353
1388
1424
1462
1501
1541
--
4.91
5,56
6,26
7,02
7.85
8,74
9,70
10,73
--
5191
5703
6263
6873
7534
8247
9014
9835
--
LEGEND
Refer to this page for general Fan Performance
Bhp
-- Brake Horsepower
Watts -- Input Watts to Motor
*Standard low-medium static drive range is 1066 to 1283 rpm. Alternate highstatic drive range is 1332 to 1550. Other rpms require a field-supplied drive.
GENERAL FAN PERFORMANCE
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 17 for accessory/factory-installed
option static pressure
information.
2. Extensive motor and electrical testing on these units ensures
that the full range of the motor can be utilized with confidence.
Using fan motors up to the wattage ratings shown will not result
Table 17 -- Accessory/FlOP
Data note&
NOTE: Maximum continuous bhp is 10.20 (208/230, 575 v) or 11.80 (460 v)
and the maximum continuous watts are 9510 (208/230, 575 v) or 11,000
(460 v). Do not adjust motor rpm such that motor maximum bhp and/or watts
is exceeded at the maximum operating cfm. See Evaporator Fan Motor Data
tables for more information.
NOTES
in nuisance tripping or premature motor failure. Unit warranty
will not be affected. See Evaporator-Fan Motor Performance
data in Table 19 on page 34 for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact
your Carrier representative for details.
4. Interpolation is permissible. Do not extrapolate.
Static Pressure (in. wg) -- 50TM016-028
CFM
COMPONENT
5400
I
6000
7200
9000
10,000
11,250
Glycol Coil
0.06
0.30
J
0.07
0.35
0.09
0.44
0.11
0.58
0.12
0.66
0.14
0.77
Electric Heat (kW)
26/34
32
42/56
55
56/75
80
0.08
0.08
0.11
0.11
0.14
0.14
0.09
0.09
0.12
0.12
0.15
0.15
0.11
0.11
0.15
0.15
0.20
0.20
0.15
0.15
0.19
0.19
0.24
0.24
0.17
0.17
0.21
0.21
0.26
0.26
0.20
0.20
0.24
0.24
0.29
0.29
MoietureMi$er
0.06
0.07
0.10
0.16
0.20
0.25
Economizer
TM
Dehumidification
LEGEND
FlOP
--
Factory-Installed
NOTES:
1. The static pressure must be added to external static pressure.
The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance tables to determine blower rpm and watts.
2. Heaters are rated at 240 v and 480 v. There are no 575-v
heaters.
Option
33
Table 18 -- Fan Rpm at Motor Pulley Settings*
MOTOR PULLEY TURNS OPEN
UNIT
50TM
0
16
1
116
tt
tt
2
216
3
1021
1002
984
316
965
947
4
416
928
910
5
516
891
873
6
1025
016t
tt
tt
016"*
tt
tt
tt
tt
1200
1178
1156
1134
1112
1091
1069
1047
020t
tt
tt
1095
1077
1058
1040
1021
1002
984
965
947
928
910
020**
tt
tt
1287
1265
1243
1222
1200
1178
1156
1134
1112
1091
1069
025t
025**
tt
tt
tt
tt
tt
tt
?t
tt
1151
1369
1132
1347
1114
1098
1077
1058
1040
1021
1002
1325
1303
1281
1259
1237
1218
1193
028t
tt
tt
1283
1269
1247
1225
1203
1182
1160
1138
1116
1098
1066
028**
tt
tt
--
--
1551
1524
1497
1470
1443
1418
1388
1361
1332
*Approximate _n rpm shown.
tlndicates standard drive package.
**Indicates alternate drive package.
ttDue to belt and pulley size, pulley cannot be set to this number of turns open.
Table 19UNIT
50TM
UNIT
VOLTAGE
208/230
016
025
028
MAXIMUM
ACCEPTABLE
CONTINUOUS
BHP*
Motor Performance
MAXIMUM
ACCEPTABLE
CONTINUOUS
BkW*
MAXIMUM
ACCEPTABLE
OPERATING
WATTS
4.57
4.57
5,180
5,180
575
208/230
6.13
4.57
5,180
6.0
5.90
4.40
5,180
15.8
460
5.90
4.40
5,180
7.9
575
206/230
5.90
8.70
4.40
6.49
5,180
7,915
6.0
22.0
460
9.50
7.08
8,640
13.0
575
208/230
8.70
6.49
7,915
10.0
10.20
7.61
9,510
28.0
11.80
10.20
8.80
7.61
11,000
9,510
14.6
13.0
460
575
LEGEND
BHP -BkW--
MAXIMUM
AMP DRAW
6.13
6.13
460
020
Evaporator-Fan
Brake Horsepower
Brake Kilowatts
*Extensive motor and electrical testing on these units ensures that the full horsepower (brake kilowatt) range of the
motors can be utilized with confidence. Using your fan motors up to the horsepower (brake kilowatt) ratings shown in this
table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
NOTE: All indoor-fan motors 5 hp and larger meet the minimum efficiency requirements as established by the Energy
Policy Act of 1992 (EPACT) effective October 24, 1997.
Table 20 -- Evaporator-Fan
MOTOR HORSEPOWER
Motor Efficiency
MOTOR EFFICIENCY
!%)
5 Hp
87.5
7,5 Hp
88,5
10 Hp
89,5
NOTE: All indoor-fan motors 5 hp and larger meet the minimum efficiency
requirements as established by the Energy Policy Act of 1992 (EPACT) effective October 24, 1997.
34
15.8
7.9
Operating
•
•
•
•
•
Sequence
COOLING,
UNITS WITHOUT
ECONOMIZER
-- When
thennostat calls for cooling, termimds G and YI ale energized.
The indoor (evaporator) fan contactor (IFC), outdoor fan contactot (OFC), and compressor contactor no. 1 (Ci) m'e energized
and evaporator-fan motol: condenser fans and compressor no. 1
stall. The condenser-fan motors run continuously while unit is
cooling. If the thermostat calls for a second stage of cooling by
energizing Y2, compressor contactor no. 2 (C2) is energized and
compressor no. 2 starts.
•
Indoor fan has been on for at least 30 seconds.
The SPT, SAT. and OAT inputs must have valid readings.
OAT must be less than 75 E
OAT must be less than SPT.
Enthalpy must be LOW (may be jumpered if an enthalpy
sensor not available).
Economizer
position is NOT forced.
Pre-cooling occm.s when there is no call from the thermostat
except G Pre-cooling is defined as the economizer modulates
to provide 70 F supply _fil:
HEATING. UNITS WITHOUT ECONOMIZER
(If Optional
or Accessory Heater is Installed) --Upon
a call for heating
through terminal WI, IFC and heater contactor no. 1 (HCi) are
energized. On units equipped for 2 stages of heat, when additional heat is needed HC2 is energized through W2.
COOLING. UNITS WITH ECONOMISERIV
--When
free
cooling is not available, the compressors will be controlled by
the zone thermostat.
When free cooling is available, the
outdoor-air &unper is modulated by the EconoMiSerlV control
to provide a 50 to 55 F supply-air temperature into the zone. As
the supply-air temperature fluctuates above 55 or below 50 IF.
the dampel.s will be modulated (()pen or close) to bring the supply-air temperature back within set point limits.
For EconoMiSerIV
operation, there must be a thermostat
call for the fan (G). This will move the damper to its minimum
position during the occupied mode.
When free cooling is available the PremierLink control will
control the compressors,
energize the reversing valve(s) and
economizer to provide a supply-air temperature determined to
meet the YI and Y2 calls from the therlnostat using the following three routines. The three control routines are based on OAT.
The 3 routines are based on OAT where:
Above 50 F supply-air temperature, the dmnpers will modulate from 100% open to the minimum open position. From 50 F
to 45 F supply-air temperature, the &_mpers will maintain at
the minimum open position. Below 45 F the dampers will be
completely shut. As the supply-air temperature rises, the dampers will come back open to the minimum open position once
the supply-air temperature rises to 48 E
If optional power exhaust is inst_flled, as the outdoor-air
damper opens and closes, the power exhaust fans will be energized and deenergized.
•
SASP = Supply Air Set Point
DXCTLO
Routine
•
•
•
•
•
•
•
•
•
•
•
Damper movement from full closed to lhll open (or vice
vel_a) will take between 11/2and 21/2 minutes.
•
•
1 (OAT < DXCTLO)
economizer
maintains
a
SASP
=
economizer
maintains
a
SASP
=
2 (DXCTLO
< OAT < 68 F)
If only YI energized, the economizer
maintains a SASP
= (SATLOI + 3).
If SAT > SASP + 5 and economizer
position > 80%,
economizer will go to minimum position for 3 minutes or
until SAT > 68 E
First stage of mechanical cooling will be energized.
Integrator resets.
Economizer
opens again and controls to current SASP
after stage one on for 90 seconds.
With Yi and Y2 energized
economizer
maintains
an
SASP = SATLO2 + 3.
If SAT > SASP + 5 and economizer
position >80%,
economizer will go to minimum position for 3 minutes or
until SAT > 68 IF.
If compressor
one is on then second stage of mechanical
cooling will be energized. Otherwise the first stage will
be energized.
Integrator resets.
Economizer
opens again and controls
to SASP after
stage one on for 90 seconds.
Routine
If free cooling can be used as determined from the appropriate changeover command (switch, diy bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), a call for cooling
(YI closes at the thermostat) will cause the control to modulate
the &tmpel_ open to maintain the supply air temperature set
point at 50 to 55 IF.
Cooling Lockout Set Point
Integral
YI energized
(SATLOI + 3).
Y2 energized
(SATLO2 + 3).
Routine
If Iield-installed accessory CO2 sensors are connected to the
EconoMiSerIV control, a demand controlled ventilation strategy will begin to operate. As the CO2 level in the zone increases
above the CO2 set point, the minimum position of the &_mper
will be increased proportionally. As the CO2 level decreases
because of the increase in fresh ail: the outdoor-air damper will
be proportionally closed. Dmnper position will follow the higher demand condition from DCV mode or free cooling mode.
3 (OAT > 68)
Economizer
is opened 100%.
Compressors
1 and 2 are cycled based on YI and Y2
using minimum
on and off times and watching
the
supply-air
temperature
as compared
to SATLOI
and
SATLO2 set points.
If optional power exhaust is installed, as the outdoor-air
&tmper opens and closes, the power exhaust fans will be energized and deenergized.
If field-installed accessory CO2 sensors me connected to the
PremierLink
control, a PlD-controlled
demand ventilation
strategy will begin to operate. As the CO2 level in the zone
increases above the CO2 set point, the minimum position of the
&_mper will be increased proportionally.
As the CO2 level
decreases because of the increase in fresh air, the outdoor-air
&tmper will be proportionally closed.
HEATING. UNITS WITH ECONOMISER2,
PREMIERLINK
CONTROL AND A THERMOSTAT -- When the thermostat
calls for heating, terminal WI is energized. The PremierLink
control will move the economizer damper to the minimum position if there is a call for G and closed if there is a call for WI
without G. In order to prevent thermostat from short cycling,
As the supply-air temperature diops below the set point
range of 50 to 55 IF. the control will modulate the outdoor-air
dampers closed to maintain the proper supply-air temperature.
HEATING, UNITS WITH ECONOMISERIV
-- When the
room thermostat calls for heat, the heating controls are energized as described in the Heating, Units Without Economizer
section. When the indoor fan is energized, the economizer
damper moves to the minimum position. When the indoor fan
is off. then the economizer dmnper is fully closed.
COOLING.
UNITS WITH ECONOMISER2,
PREMIERLINK TM CONTROL AND A THERMOSTAT
-- When free
cooling is not available, the compressol_ will be controlled by
the PremierLink control in response to the YI and Y2 inputs
from the thermostat.
The PremierLink control will use the following
to determine if free cooling is available:
= Direct Expansion
PID = Proportional
information
35
the unit is locked into the heating mode for at least 10 minutes
when WI is energized.
On units equipped for two stages of heat, when additional
heat is needed, W2 is energized and the electric heat (if used)
comes on. When the thermostat is satisfied and WI is deenergized, the [FM stops.
COOLING.
UNITS WITH ECONOMI$ER2,
PREMIERLINK TM CONTROL AND A ROOM SENSOR --When
free
cooling is not available, the compressors will be controlled by
the PremierLink controller using a PID Error reduction cfdculation as indicated by Fig 44.
strategy will begin to operate. As the CO2 level in the zone
increases above the CO2 set point, the minimum position of the
damper will be increased proportionally.
As the CO2 level
decreases because of the increase in fresh all: the outdoor-air
damper will be proportionally closed.
HEATING. UNIT WITH ECONOMISER2,
PREMIERLINK
CONTROL AND A ROOM SENSOR -- Every 40 seconds
the controller will cfflculate the required heat stages (maximum
of 3) to mainttfin supply-air temperature (SAT) if the following
qufdifying conditions are met:
• Indoor fan has been on for fit least 30 seconds.
• COOL mode is not active.
• OCCUPIED,
TEMRCOMPENSATED
START or HEAT
mode is active.
• SAT reading is available.
• Fire shutdown mode is not active.
The PremierLink controller will use the following information to determine if fiee cooling is available:
• Indoor fan has been on for at least 30 seconds.
• The SPT. SAT. and OAT inputs must have valid readings.
• OAT must be less than 75 E
• OAT must be less than SPT.
• Enthalpy
must be LOW (may be jumpered
if and
enthalpy sensor is not available).
• Economizer
position is NOT forced.
If all of the above conditions me met, the number of heat
stages is cfflculated; otherwise the required number of heat
stages will be set to 0.
If the PremierLink controller detemfines that heat stages are
required, the economizer damper will be moved to minimum
position if occupied and closed if unoccupied.
When free cooling is available, the outdoor-air damper is
positioned through the use of a Proportional
Integral (PID)
control process to provide a calculated supply-air temperature
into the zone. The supply air will maintain the space temperature between the heating and cooling set points as indicated in
Fig. 45.
Staging should be as follows:
If Heating PID STAGES=2
•
•
The PlemierLink
control will integrate the compressw_
stages with the economizer based on similar logic as the three
routines listed in the previous section. The SASP will float up
and down based on the error reduction calculations that comptue space temperature
and space set point. The reversing
vfdves will be energized.
•
•
•
•
•
•
conditions
(75% capacity) will energize HSI
(100% capacity) will energize HS2
In order to prevent short cycling, the unit is locked into the
Heating mode for fit least 10 minutes when HS 1 is deenergized.
On units equipped for two stages of heat, when additional heat
is needed, it may be provided by electric heat (if supplied).
When the space condition is satisfied and HSI is deenergized
the IFM stops. The fan will run continuously in the occupied
mode as required by national energy and fresh air standards.
When outdoor-air temperature conditions require the economizer to close for a compressor stage-up sequence, the economizer control integrator is reset to zero after the stage-up sequence is completed. This plevents the supply-air temperature
from diopping too quickly and creating a freeze condition that
would make the compressor turn off prematurely.
The high space set point is used for DX (direct expansion)
cooling control, while the economizer space set point is a
cfdculated value between the heating and cooling set points.
The economizer set point will always be at least one degree
below the cooling set point, allowing for a smooth transition
from mechanical
cooling with economizer
assist, back to
economizer
cooling as the cooling set point is achieved.
The compressors
may be used for initifd cooling then the
PremierLink controller will modulate the economizer using an
error reduction calculation
to hold the space temperature
between the heating and cooling set points. See Fig. 45.
The controller uses the following
economizer cooling:
HEAT STAGES=I
HEAT STAGES=2
TEMPERATURE
w
75,
'_
734
CE
CONTROL
724-
...... SET
POINT
714
I-
--
w 704
TEMPERATURE
o
694
CO 68 J
TIME
NOTE: PremierLink control performs smart staging of 2 stages of DX
cooling and up to 3 stages of heat.
to determine
Fig. 44 -- DX Cooling Temperature
Control Example
Enthalpy is Low
SAT reading is available
OAT reading is available
SPT reading is available
OAT < SPT
Economizer
Position is NOT forced
TEMPERATURECONTROL
D
74
If any of the above conditions ale not met, the economizer
submaster reference (ECSR) is set to maximum limit and the
dmnper moves to minimum position. The operating sequence
is complete. The ECSR is lecalculated eve U 30 seconds.
_
73
If an optional power exhaust is instfdled, as the outdoor-air
dmnper opens and closes, the power exhaust fans will be
energized and deenergized.
ow ii
72
_- 711
t
......... ....................................
F-----coo,
SETPO, T
/
\
I--
v
TEMPERATURE
L___HEATSETPOINT
TIME
If field-installed
accessory CO2 sensors me connected to
the PlemierLink control, a PID-controlled
demand ventilation
Fig. 45 -- Economizer Temperature
Control Example
36
SERVICE
Evaporator
Fan
Performance
Adjustment
(Fig. 46 and 47) -- Fan motor pulleys ;u'e factory set for
speed shown in Table 1.
To change fan speeds:
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Tnm off accessory
heater power switch if applicable. Electrical shock could
cause pel.sonal injury.
1. Shut offunit
Ix_osen nuts on the 2 cmriage bolts in the motor mounting
base. Install jacking bolt and plate under motor base (bolt
and plate are shipped in inst_fller's packet). See Fig. 47.
Using bolt and plate, raise motor to top of slide and remove belt. Secure motor in this position by tightening the
nuts on the carriage bolts.
3.
Ix_osen movable-pulley
4.
Screw movable flange towmd fixed flange to increase
speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motol: Do not exceed maximum speed specified in Table 1.
Cleaning
-- Inspect unit interior at beginning of each heating and cooling season and as operating conditions require.
Remove unit top panel and/or side panels for access to unit
intefiol:
EVAPORATOR
cial coil cleanel;
COIL -- Clean as required
with a commer-
NOTE: The 50TM028
unit has a mist eliminator
screen
attached to the evaporator coil to prevent condensate runoff at
high wet-bulb conditions. Check periodically and clean as
necessmy.
CONDENSER
COIL--Clean
condenser coil annually and
as required by location and outdoor-air conditions. Inspect coil
monthly -- clean as required.
CONDENSATE
DRAINstart of cooling season.
Check
and clean
each year
5.
Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Table 1 for speed change for each
lull turn of pulley flange.)
6.
Replace and tighten belts. See Belt Tension Adjustment
section on this page.
at
To align fan and motor pulleys:
1. Ix)osen fan pulley setscrews.
NOTE: The 50TM028 unit requires industri_d grade throwaway filters capable of withstanding
face velocities up to
625 fpm. Ensure that replacement
filters for the 50TM028
units are rated for 625 fpm.
OUTDOOR-AIR
INLET SCREENS -- Clean screens with
steam or hot water and a mild detergent. Do not use throwaway
filters in place of screens.
2.
Slide fan pulley along fan shaft.
3.
Make anguku" alignment
mounting pkite.
Evaporator
Fan Service
by
loosening
motor
from
and Replacement
--
The 50TM020-028
units use a fan motor mounting system that
features a slide-out motor mounting pkite. To replace or service
the motor, slide out the bracket. See Fig. 47.
1. Remove the evaporator-fan
control access panel.
Lubrication
COMPRESSORSEach compressor
is charged with the
correct amount of oil at the factory. Conventional white oil
(Sontext 200LT) is used. White oil is compatible with 3GS oil,
and 3GS oil may be used if the addition of oil is required. See
compressor nameplate for original oil charge. A complete rechmge should be four ounces less than the origimfl oil charge.
When a compressor is exchanged in the field it is possible that
a major portion of the oil from the replaced compressor may
still be in the system. While this will not affect the reliability of
the replacement compressol: the extra oil will add rotor di'ag
and increase power usage. To remove this excess oil, an access
valve may be added to the lower portion of the suction line at
the inlet of the compressol: The compressor should then be mn
for 10 minutes, shut down, and the access valve opened until
no oil fows. This should be repeated twice to make sure the
proper oil level has been achieved.
FAN SHAFT BEARINGS -- The bearings are of the pillow
block type and have grease fittings. The bearing opposite the
motor end has an extended tube line so it can be lubricated
from the motor side. Lubricate the bearings twice annually.
access panel and the heating
2.
Remove the center post (located between the evaporator
fan and heating control access panels) and all screws
securing it.
3.
Ix_osen nuts on the two carriage bolts in the motor mounting base.
4.
5.
Using jacking bolt under motor base, raise motor to top of
slide and remove belt. Secure motor in this position by
tightening the nuts on the carriage bolts.
Remove the belt (hive.
6.
Remove jacking bolt and tapped jacking bolt plate.
7.
Remove the 2 screws that secure
plate to the motor support channel.
8.
Remove the 3 screws from the end of the motor support
channel that interfere with the motor slide path.
9.
Slide out the motor and motor mounting
10.
Disconnect wiring connections
ing bolts.
11. Remove the motol:
Typical lubricants me given below:
Texaco
Mobil
Sunoco
Texaco
flange setscrew (see Fig. 46).
See Table 12 for air quantity limits.
FILTERS -- Clean or replace at start of each heating and cooling season, or more often if operating conditions require. Refer
to Table 1 for type and size.
MANUFACTURER
power supply.
2.
12.
pkite.
and remove the 4 mount-
To install the new motol: reverse Steps 1-11.
Belt Tension
LUBRICANT
Regal AFB-2*
Mobilplex EP No. 1
Prestige 42
Multifak 2
the motor mounting
Adjustment
-- Toadjust belt
tension:
1. Ix_osen fan motor bolts.
2.
*Preferred lubricant because it contains rust and oxidation inhibitors.
CONDENSER
AND
EVAPORATOR-FAN
MOTOR
BEARINGS
-- The condenser-fan and evaporator-fan motors
have permanently
sealed bemings, so no field lubrication is
necesstuy.
37
Adjust belt tension:
a. Size 016 Units: Move motor mounting plate up or
down for proper belt tension (l/z in. deflection with
one finger).
b. Size 020-028 Units: Turn motor jacking bolt to move
motor mounting plate up or down for proper belt tension (:Vs in. deflection at midspan with one finger
[9 lb force]).
3. Tighten
nuts.
4. Adjust
boltsandnutonmounting
plate
tosecure
motorin
fixedposition.
Condenser-Fan
chmge systems using the MoistureMiSer
dehumidification
package, fully evacuate, recovo: and re-chtuge the system to
the nmneplate specified charge level. To check or adjust refrigerant chalge on systems using the MoistureMiSer
dehumidification package, chtu'ge per the sttm&u'd subcooling ch_u'ts. The
subcooler MUST be deenergized to use the chtuging charts.
The ch_uts reference a liquid pressme (psig) and temperatme at
a point between the condenser coil and the subcooler coil. A
tap is provided on the unit to measure liquid pressure entering
the subcooler (leaving the condenser).
Adjustment
50TM0I 6,020,028 UNITS (Fig. 48)
1. Shut off unit power supply.
2. Remove access panel(s) closest to the fan to be adjusted.
3. Ix)osen fan hub setscrews.
4. Adjust fan height on shaft using a straightedge placed
across the fan orifice.
5. Tighten setscrews and replace panel(s).
6. Turn on unit powel:
SECOND
BELT
ON 10 liP MOTOR
ONLY)
50TM025 UNITS (Fig. 49)
1. Shut off unit power supply.
2. Remove fan top-grille assembly and loosen fan hub
screws.
3. Adjust Nn height on unit, using a straightedge placed
across the fan orifice.
4.
5.
(028 UNITS
BE PARALLEL
WITR BELT(S)
/
ENSURE PROPER
CLEARANCE
BETWEEN
BELT(S) AND FAN
SUPPORT NOTCH
PULLEY
Tighten setscrews and replace lubber hubcap to prevent
hub fiom busting to motor shaft.
Fill hub recess with permagum if robber hubcap is
missing.
MOVABLE
FLANGES
Power Failure
-- Dampers have a spring return. In event
of power failure, dampers will return to fully closed position
until power is restored. Do not manually operate damper
PULLEY
1710tOE
Refrigerant Charge
MOTORANDFAN
SHAFTS MUST
PARALLEL
BE
SETSCREWS_
--
Amount of refiigerant
chalge
is listed on unit nameplate and in Table 1. Refer to C;uTier
GTAC II; Module 5; Charging, Recovery, Recycling, and Reclamation section for charging methods and procedures. Unit
panels must be in place when unit is operating during ch;uging
procedure.
NOTE: Do not use recycled
contaminants.
refrigerant
as it may
FIXED
SINGLE-GROOVE
contain
Fig. 46-
NO CHARGE -- Use stan&ud evacuating techniques. After
evacuating system, weigh in the specified amount of refrigerant 0efer to Table 1).
Evaporator-Fan Pulley Alignment
and Adjustment
FAN PULLEY
LOW CHARGE
COOLING -- Using cooling charging chmt
(see Fig. 50), add or remove refrigerant until conditions of the
chart are met. Note that charging chart is different from those
normally used. An accurate pressure gage and temperaturesensing device is required. Charging is accomplished by ensuring the proper mnount of liquid subcooling. Measure liquid line
pressure at the liquid line service valve using pressure gage.
Connect temperature sensing device to the liquid line near the
liquid line service valve and insulate it so that outdoor ambient
temperature does not affect reading.
TO USE THE COOLING CHARGING
CHART -- Use the
above temperature and pressure readings, and find the intersection point on the cooling charging chart. If intel_ection point on
chart is above line, add refrigerant. If intersection point on
chart is below line, ctuefully recover some of the charge. Recheck suction pressure as ch;uge is adjusted.
NOTE: Indoor-air cfin must be within normal operating
of unit. All outdoor fans must be operating.
FLANGES
°
CENTER POST
BELT_
MOTOR PULLEY
MOTOR
PLATE
MOUNTING
PLATE
R _
_o
MOTOR
SEE NOTE
range
M OTO R 2U ppo R_
The TXV (thermostatic expansion v;dve) is set to maintain
between 15 and 20 degrees of superheat at the compressors.
The v;dves abe factory set and should not require re-adjustment.
_l_!r
CHANNEL
!"1_i'_
TMJ'
JACKING BOLT
NOTE: A 3V2-in. bolt and threaded plate are included in the
installer's packet. They should be added to the motor support channel below the motor mounting plate to aid in raising the motor. The
plate part number is 50DP503842. The adjustment bolt is 3/8-16 x
13/4 in.-LG.
MOISTUREMISER
TM SYSTEM
CHARGING
-- The system charge for units with the MoistureMiSer
option is greater
than that of the standard unit alone. The charge for units with
this option is indicated on the unit nameplate drawing. To
Fig. 47 -- Evaporator-Fan
38
Motor Section
._
r
t
,
i
Compressor
Lockout i If any of the safeties (high-pressure.
low-pressure, freeze protection thermostat, compressor internal
flierlnostat) trip, or if there is loss of power to the compressors,
die CLO (complessor lockout) will lock the compressors off.
To reset, manually move the therlnostat setting.
EVAPORATOR
FAN MOTOR PROTECTION
i A manual reset, calibrated trip, magnetic circuit breaker protects
against overcurrent. Do not bypass connections or increase the
size of the breaker to correct trouble. Determine the cause and
correct it before lesetting the breakel:
CONDENSER-FAN
MOTOR
PROTECTION
-- Each
condenser-fan
motor
is
internally
protected
against
overtemperature.
HIGH-PRESSURE
AND LOW-PRESSURE
SWITCHES
-If either switch trips, or if the compressor overtemperatule
switch activates, that refrigerant circuit will be automatically
locked out by the CLO. To reset, manually move the thermostat setting.
FREEZE PROTECTION
THERMOSTAT
(FPT) i An FPT
is located on the top and bottom of die evaporator coil. It detects frost build-up and turns off the compressor, allowing the
coil to cleal: Once the frost has melted, the compressor can be
leenergized.
........
)
) oo +o:o=
NOTE: Dimensions are in inches).
Fig. 48 -- Condenser-Fan
50TM016,020,028
Adjustment,
RAIN
SHIELD
NOTE: Dimensions are in inches.
Fig. 49 --
Relief
Condenser-Fan
50TM025
ALL OUTDOOR
Devices -- All units have relief devices to protect
against damage from excessive plessures (e.g., fire). These devices protect the high and low side.
Adjustment,
Control Circuit, 24-V
-- This control circuit is protected against overcunent
by a 3.2-amp circuit breaker Breaker
can be reset. [f it trips, determine cause of trouble before
resetting. See Fig. 51 and 52 for typical wiring.
BOTH CIRCUITS
FANS MUST BE OPERATING
Replacement Parts
parts may
request.
be obtained
Diagnostic
LEDs
for diagnostic
page 43.
purpose.
-- A complete list of replacement
from any Carrier distributor upon
-- qn_e unit control bomds have LEDs
Refer to Troubleshooting
section on
Optional
Hinged Access Doors -- When the optional
service package is ordered or the if the hinged access doors
option is ordered, the unit will be provided with external and
internal hinged access doors to facilitate service.
50
100
150
200
250
300
350
Four external hinged access doors are provided on size 016025 units. Two external hinged doors ;ue provided on size 028
units. All external doors ale provided wifli 2 huge V4 turn hitches with folding bail-type handles. (Complessor
access doors
have one hitch.) A single door is provided for filter and drive
access. One door is provided for control box access. The control box access door is interlocked with the non-fused disconnect which must be in the OFF position to open the dool: On
size 016-025 units, two doors are provided for access to the
compressor compartment.
400
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Fig. 50 -- Cooling
Charging
Chart
Filter Drier -- Replace whenever refiigerant system is exposed to atmosphere.
Protective
Overcurrent
protection.
Two internal access doors are provided inside the filter/
diive access door The filter access door (on the left) is secmed
by 2 small 1/4turn latches with folding bail-type handles. This
door must be opened prior to opening the diive access door
The drive access door is shipped with 2 sheet metal screws
holding the door closed. Upon initial opening of the dool: these
screws may be removed and discarded. The door is fllen held
shut by the filter access dook which closes over it.
Devices
COMPRESSOR
PROTECTION
-- Each compressor
has internal line break motor
Crankcase Heater -- All units are equipped with a 70-watt
crankcase heater to prevent absorption of liquid refrigerant by
oil in the crankcase when the compressor is idle. The crankcase
heater is energized whenever there is a main power to the unit
and the compressor is not energized.
energize the crankcase heaters for 24 hours before starting
I IMPORTANT:
shutdown or servicing,
the compressors. After prolonged
39
ELECTRIC HEAT OPTION
-BL
ELECTRIC
208/240v
_C_
HEAT
200/230V
AMPS
KW
:
A
SEE ELECTRIC
HEAT CHARY
71.3/823
25.71342
B
1171135
42.21561
C
156/180
56,2/74,8
-BL
I
"
_c_
_BL
,
Y[
I
Hc_
U "
,
{A _ C ONLY)
/,
I
(B O_LY)_
I
BL_ at_
SUPPLY"
Y[L
_L
CC_
t3
II
I
I
L
1 1 ,_
I
_ _--_--
BL_
°"-_
_---_'<_-_
CAP2
o,
m_
ore _,
OFW_
:,:
....
Bt_
_L_
_ic_
I
y[L_)
_
:LsELECIRTIC _BR_
B_
BR_
> TRA_
_2
RE_
..... _'_;_gt
...........
TO ECONOMIIZR OPIIONIACCgSSORY
Bp_ _. TO
ECONOMIZER
OPTIONIACCESSORY
2081230V
TM016.020
L
REVIS]O.
RZCOR_
P^_l _uwB[r
2081230V
017 TON
50HJ503171
SHY 2 OF
__
_
_
60
-<'I--
,_._
vlo
oPtmN _ .coy _eL-<<--
_
|
vio
_t
j
3
Fig. 51 -- Typical Wiring Schematic
4O
(50TM016,020
208/230 V Shown)
COMPONENT ARRANGEMENT
CONTROL
BOX
0
_111
I--
OISCONNECT
PERHElm _
m
m
BL_
PL1-R
=
F
_{_cT_T_c
i_
iEO_O
6_,_T_
" q
i
F
_¢ii_c
_- G_Ti_i" q
iE]E]E]E]
i° °__o_
!;2
LF:_.P,_....... J
: o
o
o
o
o
o
o
) o_
-o
i
L FLI._.FLO .... j
{A)
zv
10v
0
to MAI_
CONYROL
BOX
PLI
Fig. 52 -- Typical Component Arrangement (50TM016,020
41
Shown)
LEGEND
AND NOTES FOR FIG 51 AND 52
LEGEND
AHA
C
CAP
CB
CC
CH
CLO
COMP
CR
DM
DU
------------
Adjustable, Heat Anticipator
Contactor, Compressor
Capacitor
Circuit Breaker
Cooling Compensator
Crankcase Heater
Compressor Lockout
Compressor Motor
Control Relay
Damper Motor
Dummy Terminal
EQUIP
FL
FPT
FU
GND
------
Equipment
Filament
Freeze Protection Thermostat
Fuse
Ground
HC
HPS
HTR
IAQ
IFC
IFCB
IFM
IFR
L
LOR
LPS
LS
-------------
Heater Contactor
High-Pressure Switch
Heater
Indoor Air Quality Sensor
Indoor Fan Contactor
Indoor Fan Circuit Breaker
Indoor Fan Motor
Indoor Fan Relay
Light
Lockout Relay
Low-Pressure Switch
Limit Switch
NEC
OAT
OCCUP
OFC
OFM
OP
-------
National Electrical Code
Outdoor Air Temperature Sensor
Occupancy Sensor
Outdoor Fan Contactor
Outdoor Fan Motor
Overcurrent Protection
PL
PRI
QT
RAT
SW
TB
TC
TH
TRAN
Q
O
[_
•
----------
Plug Assembly
Primary
Quadruple Terminal
Return Air Temperature
Switch
Terminal Block
Thermostat Cooling
Thermostat Heating
Transformer
Sensor
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
E mE
Field Wiring
Option/Accessory
_
To indicate common potential only;
not to represent wiring.
Economizer Motor
Wiring
_
Remote Pot Field Accessory
OAT Sensor
_
Disch Air Sensor
RAT Accessory
Sensor
Low Ambient Lockout Switch
NOTES:
1. Compressor and/or fan motor(s) thermally protected three phase motors protected against primary single phasing
conditions.
2. If any of the original wire furnished must be replaced, it must be replaced with Type 90 ° C or its equivalent.
3. Jumpers are omitted when unit is equipped with economizer.
4. IFCB must trip amps is equal to or less than 140% FLA.
5. On TRAN1 use BLK lead for 460 v power supply and ORN lead for 575 v power supply.
6. The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices. Before
replacing CLO, check these devices.
7. Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single pole, double
throw contact. An underlined number signifies a normally closed contact. Plain (no line) number signifies a normally open contact.
8. 620 Ohm, 1 watt, 5% resistor should be removed only when using differential enthalpy or dry bulb.
9. If a separate field supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary
of the transformer grounded.
10. OAT sensor is shipped inside unit and must be relocated in the field for proper operation.
11. For field installed remote minimum position POT. remove black wire jumper between P and P1 and set control minimum position POT to the minimum position.
42
TROUBLESHOOTING
Unit Troubleshooting
troubleshooting
--
should turn on. The actuator should drive to between 90
and 95% open.
4. Turn the Exhaust potentiometer CW until the Exhaust
LED turns off. The LED should turn off when the
potentiometer is approximately 90%. The actuator should
lemain in position.
5. Turn the DCV set point potentiometer CW until the DCV
LED turns off. The DCV LED should turn off when the
potentiometer is approximately 9-v. The actuator should
chive fully closed.
6. Turn the DCV and Exhaust potentiometers
CCW until
the Exhaust LED turns on. The exhaust contacts will
close 30 to 120 seconds after the Exhaust LED turns on.
7. Return EconoMiSerlV
settings and wiring to normal
after completing troubleshooting.
DCV MINIMUM AND MAXIMUM POSITION -- To check
the DCV minimum and maximum position:
Refer to Tables 21 and 22 for
details.
EconoMi$erlV
Troubleshooting--
for EconoMi$erIV
logic.
See
Table
23
A fiJnctional view of the EconoMiSer is shown in Fig. 53.
Typical settings, sensor ranges, and jumper positions me also
shown. An EconoMi$erIV simulator program is available flom
Cartier to help with EconoMiSerIV tr;fining and troubleshooting.
ECONOMI$ERIV
PREPARATION
-- This procedure
is
used to prepare the EconoMiSerIV
for troubleshooting.
No
troubleshooting or testing is done by performing the following
procedure.
NOTE: This procedure requires a 9-v battery. 1.2 kilo-ohm
resistol: and a 5.6 kilo-ohm resistor which are not supplied
with the EconoMiSerlV.
IMPORTANT:
tiometers
before Bestarting
sure totroubleshooting.
record the positions
1. Make sure EconoMiSerIV
preparation
procedure
has
been performed.
2. Connect a 9-v battely to AQ (positive node) and AQI
(negative node). The DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
3. Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80%
open.
4. Turn the DCV Maximum Position potentiometer to fully
CCW. The actuator should drive fully closed.
5. Turn the Minimum Position potentiometer
to midpoint.
The actuator should drive to between 20 and 80% open.
6. Turn the Minimum Position Potentiometer fully CW. The
actuator should drive fully open.
7. Remove the jumper from TR and N. The actuator should
&ive fully closed.
8. Return EconoMi$erIV
settings and wiring to normal
after completing troubleshooting.
of all poten-
1. Disconnect power at TR and TRI. All LEDs should be
off. Exhaust fan contacts should be open.
2. Disconnect device at P and Pl.
3. Jumper P to Pl.
4. Disconnect wires at T and TI. Place 5.6 kilo-ohm resistor
across T and TI.
5. Jumper TR to 1.
6. Jumper TR to N.
7. If connected, remove sensor from terminals So and +.
Connect 1.2 kilo-ohm 4074EJM checkout resistor across
terminals So and +.
8. Put 620-ohm resistor across terminals SR and +.
9. Set minimum position, DCV set point, and exhaust
potentiometers fully CCW (counterclockwise).
10. Set DCV maximum
position potentiometer
fiJlly CW
Iclockwise).
11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to termimds TR and TRI.
DIFFERENTIAL
ENTHALPY-To check
differential
enthalpy:
1. Make sure EconoMiSerIV
preparation
procedure
has
been performed.
2. Place 620-ohm resistor across So and +.
3. Place 1.2 kilo-ohm resistor across SR and +. The Free
Cool LED should be lit.
4. Remove 620-ohm resistor across So and +. The Free
Cool LED should turn off.
SUPPLY-AIR INPUT -- To check supply-air input:
1. Make sure EconoMiSerlV
preparation
procedure
has
been performed.
2. Set the Enthalpy potentiometer to A. The Free Cool LED
turns on. The actuator should drive to between 20 and
80% open.
3. Remove the 5.6 kilo-ohm resistor and jumper T to TI.
The actuator should drive fully open.
4. Remove the jumper across T and TI. The actuator should
&ive fully closed.
5. Return EconoMiSerIV
settings and wiring to normal
after completing troubleshooting.
ECONOMISERIV
TROUBLESHOOTING
COMPLETION -- This procedure is used to return the EconoMiSerlV
to operation. No troubleshooting or testing is done by performing the following procedure.
5.
Return EconoMiSerIV
settings and wiring to normal
after completing troubleshooting.
SINGLE ENTHALPY
-- To check single enth_dpy:
1. Make sure EconoMiSerIV
preparation
procedure
has
been performed.
2. Set the enthalpy potentiometer to A (fully CCW). The
Free Cool LED should be lit.
1. Disconnect power at TR and TRI.
2. Set enthalpy potentiometer to previous setting.
3. Set DCV maximum position potentiometer
to previous
setting.
4. Set minimum position, DCV set point, and exhaust
potentiometels to previous settings.
5. Remove 620-olun resistor from terminals SR and +.
6. Remove 1.2 kilo-olnn checkout resistor from termimds So
and +. If used, reconnect sensor from temfin_ds So and +.
7. Remove jumper from TR to N.
8. Remove jumper from TR to 1.
9. Remove 5.6 kilo-ohln resistor from T and TI. Reconnect
wires at T and TI.
10. Remove jumper from P to PI. Reconnect device at P and
PI.
11. Apply power (24 vac) to terminals TR and TRI.
3.
Set the enthalpy potentiometer to D (fully CW). The Free
Cool LED should turn off.
4. Return EconoMiSerIV
settings and wiring to normal
after completing troubleshooting.
DCV (Demand
Controlled
Ventilation)
AND POWER
EXHAUST -- To check DCV and Power Exhaust:
1. Make sure EconoMiSerlV
preparation
procedure
has
been performed.
2. Ensure terminals AQ and AQI are open. The LED for
both DCV and Exhaust should be off. The actuator
should be fully closed.
3. Connect a 9-v battery to AQ (positive node) and AQI
(negative node). The LED for both DCV and Exhaust
43
Table 21 -- MoistureMi$er
PROBLEM
Subcooler
Dehumidification
TM
Subcooler Service Analysis
CAUSE
Will Not Energize
REMEDY
No power to subcooler control transformer.
No power from subceoler control transformer
line three-way valve.
Check power source. Ensure all wire connections
are tight.
to liquid
Liquid line three-way valve will not operate.
Subcooler
Will Not Deenergize
Low refrigerant
fuse. Ensure continuity of wiring,
low pressure switch open.
allow low-pressure switch
switch if it will not close,
check transformer,
1. Solenoid coil defective; replace.
2. Solenoid valve stuckclosed;
replace.
Liquid Line three-way valve will not close.
Low System Capacity
1. Fuse open; check
2. Subcooler control
Cycle unit off and
to reset. Replace
3. Transformer bad;
Valve is stuck open; replace.
charge or frosted coil.
1. Check charge amount. See system charging
section.
Evaporator coil frosted; check and replace
subceeler control low-pressure switch if necessary.
2.
Table 22 -- Cooling
PROBLEM
CAUSE
Compressor
and Condenser
Fan
Will Not Start,
Insufficient
Compressor
Will Not Start
but Condenser
Fan Runs.
contactor, transformer,
Head Pressure.
Determine
Lower thermostat
setting too high.
Check wiring and repair or replace,
Determine cause, Replace compressor,
Defective overload.
Determine
cause and replace,
Compressor
Determine
cause for safety trip and reset lockout,
locked out
Refrigerant
power dead,
overcharge
Replace fuse or reset circuit breaker,
Determine cause,
or undercharge.
Defective compressor,
Recover refrigerant, evacuate system, and recharge
to nameplate,
Replace and determine cause.
Insufficient line voltage.
Blocked condenser.
Determine
Determine
cause and correct,
cause and correct,
Defective overload.
Determine
cause and replace,
Defective thermostat,
Replace thermostat,
motor,
Replace,
in refrigerant system.
Locate restriction and remove,
Dirty air filter,
Unit undersized for load.
Replace filter.
Decrease load or increase unit size.
Thermostat
Reset thermostat,
set too low.
Low refrigerant charge,
Locate leak, repair, and recharge,
Air in system.
Recover refrigerant,
Condenser
Clean coil or remove restriction,
coil dirty or restricted,
Dirty air filter,
Clean coil,
overcharged,
Recover excess refrigerant.
1. Check TXV bulb mounting and secure tightly to
suction line,
2. Replace TXV if stuck open or closed,
Air in system.
Condenser
Suction Pressure.
Too Low.
Recover refrigerant,
air restricted
or air short-cycling.
Determine
Check for leaks, repair, and recharge.
Restriction
Remove restriction,
in liquid tube.
High heat load,
Check for source and eliminate,
Faulty TXV,
1. Check TXV bulb mounting and secure tightly to
suction line,
2. Replace TXV if stuck open or closed.
overcharged,
Recover excess refrigerant.
Dirty air filter,
Replace filter.
Low refrigerant charge,
Check for leaks, repair, and recharge.
Metering device or low side restricted.
Remove source of restriction.
Faulty TXV.
1. Check TXV bulb mounting and secure tightly to
suction line,
2. Replace TXV if stuck open or closed.
Insufficient
evaporator
Temperature
Field-installed
airflow.
too low in conditioned
Increase air quantity. Check filter and replace if
necessary,
area.
Reset thermostat.
filter drier restricted.
Replace.
LEGEND
TXV -- Thermostatic
evacuate system, and recharge,
cause and correct,
Low refrigerant charge,
Refrigerant
Suction Pressure
evacuate system, and recharge,
Replace filter.
coil.
Faulty TXV.
Excessive
setting below room temperature,
Faulty wiring or loose connections in compressor circuit,
Compressor motor burned out, seized, or internal overload open.
Refrigerant
Too Low,
cause and correct,
Thermostat
Dirty condenser
Head Pressure
Replace component,
Check wiring diagram and rewire correctly.
Restriction
Excessive
or control
line voltage.
Faulty condenser-fan
Operates
Call power company.
Replace fuse or reset circuit breaker,
Incorrect or faulty wiring.
One leg of 3-phase
Compressor
Cycles
(other than normally
satisfying thermostat).
REMEDY
Power failure,
Fuse blown or circuit breaker tripped,
Defective thermostat,
relay.
Compressor
continuously.
Service Analysis
Expansion Valve
44
Table 23 -- EconoMi$erlV
Input/Output
Logic
INPUTS
Demand Control
Ventilation (DCV)
Below set
(DCV LED Off)
Above set
(DCV LED On)
OUTPUTS
Enthalpy*
Outdoor
N TerminaH-
Compressor
Return
High
(Free Cooling LED Off)
Low
Low
(Free Cooling LED On)
High
High
(Free Cooling LED Off)
Low
Low
(Free Cooling LED On)
High
*For single enthalpy control, the module compares
enthalpy to the ABCD set point.
1-Power at N terminal determines Occupied/Unoccupied
24 Vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply air sensor signal.
ttModulation
is based on the DCV signal.
Y1
Y2
Stage
1
Stage
2
On
On
On
Off
On
On
On
Off
Off
Off
Off
Off
On
On
On
Off
On
Off
Off
Off
On
On
Occupied
Unoccupied
Damper
Minimum position
Closed
Off
Off
Modulating** (between min.
3osition and full-open)
Modulating** (between
closed and full-open)
Off
Off
Minimum position
Closed
On
Off
On
On
On
Off
Modulatingl-t (between min.
3osition and DCV maximum)
Off
Off
Off
Off
Modulatingtl(between
closed and DCV
maximum)
On
On
On
Off
On
Off
Off
Off
Modulating***
Modulatingl-l-t
Off
Off
Off
Off
***Modulation is based on the greater of DCV and supply air sensor
signals, between minimum position and either maximum position
(DCV) or fully open (supply air signal).
tttModulation
is based on the greater of DCV and supply air sensor signals, between closed and either maximum position (DCV)
or fully open (supply air signal).
outdoor
setting:
Fig. 53 -- EconoMi$erlV
45
Functional View
INDEX
Air quantity limits
30
Carrier Comfort Network0)
ChaNingchart,
refrigerant
Clearance
4-7
CO2 sensor
Configuration
27
Settings
26, 27
Compressor
Lubrication
37
Mounting
30
Rotation
30
Condensate drain
Cleaning
Location
Condenser
16
39
.;7
9, 10
coil
8
Cleaning
37
Condenser fan
8
Adjustment
3& 39
Control circuit
Wiring
10
Convenience outlet
13
Demand control ventilation
Dehumidification
27
Dimensions
2, 3, 5-7
Ductwork
9
EconoMi$erIV
22-27
Control mode
24
26
Controller wiring
23
Damper nlovement
26
Demand ventilation control
26
Troubleshooting
43, 45
Usage
24
Wiring
23
EconoMi$er2
22, 23
Electrical connections
10
Electricaldata
11, 12
Enthalpy changeover set points
25
Evaporator coil
8
Cleaning
37
Evaporator fan motor
Lubrication
.;7
Motor data
34
Performance
31-33
Pulley adjustment
3Z .;8
Pulley setting
8, 34
Speed
34
Filter
Cleaning
.;7
Size
8
Freeze protection thermostat
Heat anticipator settings
13
High-pressure switch
8, 39
Horizontal adapter roof curb
Humidistat
28
Outdoor air inlet screens
Cleaning
37
Dimensions
8
Physical data 8
Power supply 10
Wiring 10
PremierLink TM controls
16-19
Pressure, drop
Economizer
33
Electric heat 33
MoistureMiSer
33
Pressure switches
High pressure
8
Low pressure
8
Refrigerant
Charge 38
Type 8
Refrigerant service ports 30
Replacement parts .;9
Return air filter 8, 30
Return air temperature sensor 25
Rigging unit 4
Roof curb
Assembly
1
Dimensions
2, 3
Leveling tolerances 2-4
Safety considerations
1
Service 37-42
Start-up .;0-36
Start-up checklist
CL-1
Supply-air temperature sensor
16,22
Thermostat
10
Troubleshooting
43-45
Weight
Corner 5-7
Economizer
5-8
Maximum
4
Unit 5-8
Wind baffle
14, 15
Wiring
Differentialenthalpy control 21
EconoMiSerlV
23
EconoMiSer2
23
Power connections
10
PremierLink
18
Thermostat
10
Unit 40, 41
8, 39
4
Indoor air quality sensor
16
Low-pressure
switch
& .;9
Manual outdoor air damper
13
MoistumMiSer TM
dehumidification
28, 29, 38, 44
Motormasterq_) control
14, 15
Mounting
Compressor
30
Unit
4
Non-fused disconnect
13
Operating limits
15
Operating sequence
35, 36
Cooling
35
EconoMi$erlV
35
EconoMi$er2
with
PremierLink
control
3.5,.;6
Heating
35
Outdoor air hood
13, 14
Outdoor air temperature sensor
16, 22
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Catalog No. 04-53500009-01
Printed in U.S.A.
or designs without notice and without incurring obligations.
Form 50TM-4SI
Pg 46
4-06
Replaces:
50TM-3SI
START-UP
CHECKLIST
MODEL NO.:
SERIAL
DATE:
TECHNICIAN:
NO.:
PRE-START-UP:
[] VERIFY
THAT ALL PACKING
MATERIALS
[] VERIFY
INSTALLATION
OF INDOOR FAN MOTOR
[] VERIFY
INSTALLATION
OF ECONOMIZER
[] VERIFY
THAT CONDENSATE
[] VERIFY
THAT ALL ELECTRICAL
FROM UNIT
ADJUSTMENT
BOLT AND PLATE
HOOD
CONNECTION
IS INSTALLED
CONNECTIONS
[] CHECK THAT FILTERS AND SCREENS
[] VERIFY
HAVE BEEN REMOVED
PER INSTRUCTIONS
AND TERMINALS
ARE TIGHT
ARE CLEAN AND IN PLACE
THAT UNIT IS LEVEL
[] CHECK FAN WHEEL
IS TIGHT
AND PROPELLER
FOR LOCATION
IN HOUSING/ORIFICE,
AND VERIFY
SETSCREW
LU
[] VERIFY
THAT FAN SHEAVES
[] VERIFY
THAT SCROLL
[] VERIFY
THAT CRANKCASE
ARE ALIGNED
AND BELTS ARE PROPERLY
zm
TENSIONED
c_
COMPRESSOR
HEATER
IS ROTATING
IN THE CORRECT
HAS BEEN ENERGIZED
LU
DIRECTION
I--
FOR 24 HOURS
rm
Z
o,
<
I-
START-UP:
o
ELECTRICAL
SUPPLY
VOLTAGE
COMPRESSOR
AMPS
--
--
COMPRESSOR
COMPRESSOR
NO. 1
NO. 2
SUPPLY FAN AMPS
L3-LI
LI
L2
L3
LI
L2
L3
L2
L3
LI
RES
OUTDOOR-AIR
RETURN-AIR
L2-L3
EXHAUST FAN AMPS
ELECTRIC HEAT AMPS (IF SO EQUIPPED)
TEMPERATU
LI-L2
TEMPERATURE
LU
F DB (Dry-Bulb)
TEMPERATURE
zm
F DB
F WB (Wet-Bulb)
rm
LU
COOLING
ELECTRIC
SUPPLY AIR
I-
IF
HEAT SUPPLY AIR (IF SO EQUIPPED)_
c_
F
Z
o,
PRESSURES
<
I-
REFRIGERANT
SUCTION
CIRCUIT
NO. I
PSIG
CIRCUIT
NO. 2
REFRIGERANT
DISCHARGE
CIRCUIT
NO. 1
PSIG
CIRCUIT
NO. 2
[] VERIFY
REFRIGERANT
CHARGE
USING CHARGING
o
PSIG
PSIG
CHART ON PAGE 39.
GENERAL
[] ECONOMIZER
[] VERIFY
MINIMUM
INSTALLATION
VENT AND CHANGEOVER
OF ALL OPTIONS
SETI'INGS
TO JOB REQUIREMENTS
AND ACCESSORIES
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Book
1 14
Tab
1b 16b
Catalog No. 04-53500009-01
Printed in U.S,A.
or designs without notice and without incurring obligations.
Form 50TM-4SI
Pg CL-1
4-06
Replaces:
50TM-3Sl
Source Exif Data:
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