International Comfort Products CRHEATER101A00, CRHEATER119A00, CRHEATER264A00, CRHEATER269A00, CRHEATER288A00 Installation Manual
...
CRHEATER101A00 -- CRHEATER119A00,
CRHEATER264A00 -- CRHEATER269A00,
CRHEATER288A00 -- CRHEATER299A00
CRHEATER301A00, CRHEATER308A00
CRHEATER316A00 -- CRHEATER322A00
CRSINGLE037A00 -- CRSINGLE054A00
Installation Instructions
SMALL ROOFTOP UNITS
ACCESSORY ELECTRIC HEATER
AND SINGLE POINT BOX
ELECTRIC COOLING
AND HEAT PUMP
SELECT3to15TONS
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 1.........................
PACKAGE USAGE 2..................................
PACKAGE CONTENTS 2..............................
GENERAL 6.........................................
GENERAL INSTALLATION SEQUENCE 9................
SECTION 1 INSTALLATION, SMALL--MEDIUM CABINET 10
Installing Single Point Box (CRSINGLE037A00--
054A00) 10.......................................
Installing Electric Heater (CRHEATER101A00--119A00,
CRHEATER264A00--269A00, 297A00--299A00, 301A00,
308A00, CRHEATER316A00--322A00) 10.............
SECTION 2 INSTALLATION, LARGE CABINET (3 OUT-
DOOR FANS) 18.....................................
Installing Single Point Box (CRSINGLE047A00,
049A00--054A00 18................................
Installing Electric Heater (CRHEATER288A00--
296A00) 20.......................................
UNIT POWER SUPPLY WIRING -- ALL UNITS 29.........
APPENDIX A: CONNECTION FIGURES, AC--1, AC--2 31...
APPENDIX B: CONNECTION FIGURES, AC--3 42.........
APPENDIX C: CONNECTION FIGURES, HP--1, HP2 49.....
APPENDIX D: HEATER DATA 67.......................
IMPORTANT: Read these instructions completely before
attempting to install this accessory.
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.
Recognize safety information. This is the safety--alert
symbol
instructions or manuals, be alert to the potential for
personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert
symbol. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies a hazard which could result in
personal injury or death. CAUTION is used to identify
unsafe practices which may result i n minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Turn off all power to unit and install lockout tag.
Power can come to unit from multiple sources. Verify
power is off with a meter or probe.
. When you see this symbol on the unit and in
!
WARNING
SAFETY CONSIDERATIONS
Installation and servicing of air--conditioning equipment
can be hazardous due to system pressure and electrical
components. Only trained and qual ified service pe rsonnel
should install, repair, or service air-conditioning
equipment.
Untrained personnel can perform the basic ma intenance
functions. All other operations should be performed by
trained service personnel.
!
CUT HAZARD
Failure to follow this caution may result in personal
injury. Sheet metal parts may have sharp edges or
burrs. Use care and wear appropriate protective
clothing, safety glasses and gloves when handling
parts and servicing units.
CAUTION
PACKAGE USAGE
CARRIER MODELS
MODEL NUMBER
50HC A C --- 2 04--- 14
50HCQ H P --- 2 04--- 12
50LC A C --- 3 04--- 12
50TC A C --- 1 04 ---16
50TCQ H P --- 1 04 ---14
CHASSIS
GROUP
BRYANT MODELS
MODEL NUMBER
548J H P --- 1 04 ---14
549J H P --- 2 04 ---12
551J A C --- 2 04 ---14
558J A C --- 1 04 ---16
CHASSIS
GROUP
ICP MODELS
MODEL NUMBER
CRHTR,CRSIN
AC: Cooling Only (air conditioner)
HP: Heat Pump
1-- -Standard Efficiency
2--- High Efficiency
3-- - Ultra High Efficiency
RAH AC --- 2 036--- 150
RAS A C --- 1 036---180
RHH H P --- 2 036---120
RHS H P --- 1 036---150
CHASSIS
GROUP
PACKAGE CONTENTS--
ELECTRIC HEATERS
CRHEATER101A00--119A00,
CRHEATER264A00--269A00
CRHEATER297A00, 298A00, 301A00,
308A00, CRHEATER316A00--321A00
QTY CONTENTS
1 Heater module
1 Heater slider track*
4 Screws*
1 Wiring label
1 Red wire (10 g auge){
1 Splice connector{
1 Wire tie{
1 Label, Max Temp/Static
1 Heater Cover**
*Not included with CRHEATER101A00--- 109A00, 297A00, 298A00, 301A00
{Supplied with electric heater packages CRHEATER101A00,
CRHEATER102A00, CRHEATER103B00, and CRHEATER104B00 only.
** Supplied with package CRHEATER301A00 only
UNIT SIZES
UNIT SIZES
UNIT SIZES
ELECTRIC HEATERS
CRHEATER288A00--296A00, 299A00,
322A00
QTY CONTENTS
1 Heater module
1 Heater slide track
4 Screws
1 Wiring label
1 Label, Max Temp/Static
CRSINGLE037A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 18 --- i n / 4 4 9 m m )
Ter m i na l bl o c k 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 12
Wire ties 7
Tube c l a m p 1
Seal strip 1
1
CRSINGLE038A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 18 --- i n / 4 4 9 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 1
Fuses, 60---A class RK5 6
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 12
Wire ties 7
Tube c l a m p 1
Seal strip 1
1
CRSINGLE039A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 18 --- i n / 4 4 9 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 2
Fuses, 60---A class RK5 9
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 12
Wire ties 7
Tube c l a m p 1
Seal strip 1
1
2
CRSINGLE040A00
CRSINGLE044A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 18 --- i n / 4 4 9 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 1
Fuses, 60---A class RK5 4
Power distribution harness 1
Conductors, Tap, #10 2
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 12
Wire ties 7
Tube c l a m p 1
Seal strip 1
CRSINGLE041A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 18 --- i n / 4 4 9 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 1
Fuses, 60---A class RK5 6
Power distribution harness 1
Conductors, Tap, #10 2
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 12
Wire ties 7
Tube c l a m p 1
Seal strip 1
ITEM DESCRIPTION QUANTITY
1
Single Point Box Housing Assembly
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k 1
Fuse b lock 2
Fuses, 60 ---A class T (600v) 6
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
CRSINGLE045A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
1
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k/ fu s e h o ld er 1
Fuse b lock 2
Fuses, 60---A class RK5 9
Power distribution harness 1
Conductors, Tap, #10 6
Terminal block (TB10) 2
S c r e w s , # 8 x ½ --- i n 2
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
CRHTR,CRSIN
CRSINGLE042A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE043A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 1
Te r m i n a l b l o c k ( T B --- 1 0 ) 2
Fuses, 60---A class RK5 6
Power distribution harness 1
Conductors, Tap, #10 6
S c r e w s , # 8 x ½ --- i n 2
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE046A00
ITEM DESCRIPTION QUANTITY
1
1
Single Point Box Housing Assembly
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k/ fu s e h o ld er 1
Fuse b lock 3
Fuses, 60---A class RK5 12
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE047A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k 1
Conductors, Tap, #10 3
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
1
3
CRSINGLE048A00
CRSINGLE051A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 25 --- i n / 6 3 9 m m )
Ter m i na l bl o c k 1
Fuse b lock 3
Fuses, 60---A class RK5 9
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE049A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k/ Fu se ho ld e r 1
Fuse b lock 1
CRHTR,CRSIN
Fuses, 60---A class RK5 6
Power distribution harness 1
Conductors, Tap, #10 8
Terminal block (TB10) 2
S c r e w s , # 8 x ½ --- i n 2
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE050A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k 1
Fuse b lock 2
Fuses, 60 ---A class T (600v) 6
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
ITEM DESCRIPTION QUANTITY
1
1
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k/ fu s e h o ld er 1
Fuse b lock 2
Fuses, 60---A class RK5 9
Power distribution harness 1
Conductors, Tap, #10 8
Terminal block (TB10) 2
S c r e w s , # 8 x ½ --- i n 2
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
CRSINGLE052A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k 1
Fuse b lock 3
Fuses, 60 ---A class T (600v) 9
Power distribution harness 1
Conductors, Tap, #10 3
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
1
CRSINGLE053A00
1
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k 1
Fuse b lock 4
Fuses, 60---A class RK5 12
Power distribution harness 1
Conductors, Tap, #10 8
Terminal block (TB10) 2
S c r e w s , # 8 x ½ --- i n 2
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
4
CRSINGLE054A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 33 --- i n / 8 4 5 m m )
Ter m i na l bl o c k 1
Fuse b lock 5
Fuses, 60---A class RK5 15
Power distribution harness 1
Conductors, Tap, #10 8
Terminal block (TB10) 2
S c r e w s , # 8 x ½ --- i n 2
Rain shield, small 1
Rain shield with conduit seal 1
S c r e w s , # 1 0 x ½ --- i n 8
Wire ties 7
Seal strip 1
1
CRHTR,CRSIN
5
GENERAL
PuronR Units
This installation instruction manual describes the
installation of electric heaters and associated fuse
block/field power termination kits (single point box or
SPB) on small rooftop units in nominal cooling capacities
from 3 to 15 tons. These rooftop units use Puron
refrigerant (R-410A). See Package Usage tables on page
2 for applicable unit models. Unit types include cooling
units (AC) and heat pumps (HP) distributed over several
chassis sizes. Unit types AC--1, AC--2, HP--1, HP--2 are
identified. Unit type AC--3 consists of a single model —
Carrier 50LC.
This information does not include selection data. Refer to
project plans, job submittals and selection programs for
heater and field power termination/SPB kit usage.
Some electric heaters used on these Puron (R-410A) units
may also be installed in earlier R-22 rooftop units. Refer
to Form 50-8SI or IIK-548-36-49 for installation
instructions on heater packages CRHEATER101A00
through 119A00 with earlier models. Contact your local
CRHTR,CRSIN
distributor office for a copy of this form.
Electric Heaters
Heaters are shipped with one heater per carton. The
carton is marked with a Sales Package Number. On all
heaters except CRHEATER101A00 through 119A00, the
heater Model Number (as marked on the heater infoplate)
is the same as the Sales Package number. On
CRHEATER101A00 through 119A00 heaters, the value in
position 9 of the part number differs between the sales
package part number (value is 1) and bare heater model
number (value is 0). (See Table 1.)
The heaters are modular in design, with heater frames
holding open coil resistance wires strung through ceramic
insulators, limit switches and one or two control
contactors. Power conductors are attached. One or two
heater modules may be used in a unit.
Heater modules are installed in the compartment below
the indoor (supply) fan outlet. Access is through the
indoor access panel. Heater modules slide into the
compartment on tracks along the bottom of the heater
opening. (See Fig. 15.)
NOTE: The following heaters do not use the slide track -CRHEATER01A00--109A00, 297A00, 298A00, and
301A00.
Not all available heater modules may be used in every
unit. Use only those heater modules that are UL listed for
use in a specific size unit. Refer to the label on the unit
cabinet for the list of approved heaters. (See Fig. 1 and
2.) See Appendix D for electric heater module data.
Single Point Boxes and Fuses
The Single Point Box kits provide a field power
termination location plus an enclosure for heater fuses
when required by code. The SPBs are i nstalled under the
unit’s main control box and include a cover plus all
internal wiring. Minimum components of the SPB are a
field power terminal block with t ap conductors (to
connect to the unit’s main control box field terminals).
Maximum component population includes up to five fuse
blocks.
Fuses for electric heater circuits are required and provided
when the unit’s MOCP exceeds 60-A or when the total
heater Full Load Amp value exceeds 48-A. When fuses
are required and provided, the cooling circuit is also
provided with fuse protection; some units require mi nor
wiring changes in the main control box (see section on
TB10 terminal blocks).
No Fuses
If the unit’s MOCP device rating is 60-A or less, then the
MOCP device is recognized as providing the required
overcurrent protection to the heater and no internal fusing
is required. If two hea ter modules are installed, a single
point box that contains only a fiel d power terminal block
is required. See tables at the beginning of Appendix A, B
and C for where-used information on the single point
boxes and for connections Figure number.
Units with Factory Installed HACR
The amp rating of the HACR factory installed option is
based on the size, voltage, indoor motor and other
electrical options of the unit as shipped from the fac tory.
When field installed accessory electric heaters are added
or cha nged in the unit, the HACR may no longer be of the
proper amp ra ting and therefore will need to be removed
from the unit. See unit nameplate and label on factory
installed HACR for the amp rating of the HACR that was
shipped with the unit from the factory. See unit
nameplates for the proper fuse, HACR or maximum
over--current protection device required on the unit with
field installed electric heat.
Single Point Box Contents
See Package Content tables for a list of components
included in each single point box kit. Note the height
differences and their use in specific size units.
Control Wiring
Heater modules contain one or two heater control
contactors. If two heater m odules are installed, or a
two-circuit heater module is installed, the cooling unit
(AC type) can be connected for one-stage or two-stage
heating control. On all heat pump units (HP type), all
heater contactors will be conne cted to provide
second-stage heating control.
6
Table 1 – Heater Model Number
Bare Heater Model
Number
Heater Sales Package
PNO
Includes:
Bare Heater
Carton and packing
materials
Installation sheet
Indianapolis, IN 46231 U.S.A.
COMPR A
COMPR B
COMPR C
FAN MTR QTY VOLTS AC PH HZ FLA
OUTDOOR
INDOOR
PWR.EXH.
ELC.HEAT
OTHER
POWER
SUPPLY PH HZ
PERMISSIBLE
VOLTAGE AT UNIT MINMAX
DOWN SUPPLY
SIDE SUPPLY
C R H E A T E R 0 0 1 A 0 0
C R H E A T E R 1 0 1 A 0 0
MODEL
Carrier
50TC-A06A2A5A0A0A0
Corporation
7310 West Morris Street
QTY VOLTS AC PH HZ RLA LRA REF. SYSTEM R410A TEST PRESSURE GAGE
1 208/230 3 60 15.6 110
10.7 4.9 650 4482
LBS
LBS
LBS kg
kgkgHI
450 3103
LO
PSI kPa
PSI kPa
1 208/230 1 60 1.5
1 208/230 3 60 5.2
CHARGE SYSTEM PER INSTALLATION INSTRUCTIONS
SUITABLE FOR OUTDOOR INSTALLATION
208/230 3 60
VOLT
253 187
MIN. CKT.
AMPS
26.2
MIN CLEARANCE TO COMBUSTIBLE MATERIALS _____INCHES ______mm.
FOR FIRST _____INCHES______mm. OF DUCT WHEN ELECTRIC HEATER IS INSTALLED
12 305
MIN CLEARANCE TO COMBUSTIBLE MATERIALS _____INCHES ______mm.
FOR FIRST _____INCHES______mm. OF DUCT WHEN ELECTRIC HEATER IS INSTALLED
*FOR INSTALLATION ON COMBUSTIBLE FLOORING OR
CLASS A,B, OR C ROOFING MATERIAL
12 305
MAX FUSE OR HACR
BREAKER PER NEC
MAX OVERCURRENT
PROTECTION DEVICE
125
125
40
MINIMUM UNIT DISCONNECT
FLA LRA
26 144-
CRHTR,CRSIN
ACCESSORY
HEATER MODEL
NUMBER
102A 208/
104B 208/
105A 208/
104B+104B 208/
104B+105A 208/
INSTALLER NOTE: 1.INSTALL ACCESS HEATER PER INSTALL INSTR ENCLOSED WITH HEATER. MARK
COOLING
HP HEATING
THIS EQUIPMENT COMPLIES WITH THE
2004 REQUIREMENTS OF ASHRAE 90.1
CHECK
VOLTS PH HZ
HERE
240
240
240
240
240
SPACE "CHECK HERE" FOR MODEL USED USE MIN CKT AMPS & MAX OVERCURRENT DEVICE AMPS LISTED FOR HEATER. IF NO HEATER IS USED
MARK SPACE "CHECK HERE" FOR NONE.
2.HEATERS ARE MANUFACTURED BY EMERSON HEATING PRODUCTS OR TUTCO ELECTRIC.
CAPACITY Btu/Hr CAPACITY kW EER COP
HEATER
FLA
3 60 13.6/
15.6
3 60 21.9/
25.3
3 60 33.4/
38.5
3 60 43.8/
50.5
3 60 55.2/
63.8
MIN CKT
AMPS
26.2/
26.2
33.9/
38.1
48.3/
54.6
61.3/
69.6
75.5/
86.3
17.259000
FUSE OR
MAXIMUM
HACR
OVERCURRENT
BREAKER
PROTECTION
PER NEC
DEVICE
40/40 -/- - 26/26 144/
40/40 -/- - 31/35 144/
50/60 -/- 037 44/50 144/
70/70 -/- 038 56/64 144/
80/90 -/- 038 69/79 144/
Fig. 1 -- Unit Informative Data Label
13
SINGLE PT.
BOX MODEL
NUMBER
MINIMUM
UNIT
DISCONNECT
FLA LRA
144
144
144
144
144
C10531
7
MODEL
50TC-A06A2A5A0A0A0
REFRIGERANT CHARGE R410A
ELECTRICAL DATA FOR ACCESSORY POWER EXHAUST ONLY
ACCESSORY
POWER EXHAUST
MODEL NUMBER
CRPWREXH_
CHECK
HERE
VOLTS PH HZ
POWER
EXHAUST
FLA
MIN CKT
AMPS
28.1
FUSE OR
BREAKER
PER NEC
40 -/-
HACR
MAXIMUM
OVERCURRENT
POROTECTION
DEVICE
MINIMUM
UNIT
DISCONNECT
FLA
28
LRA
146
ELECTRICAL DATA FOR ACCESSORY POWER EXHAUST INSTALLED
IN COMBINATAION WITH ELECTRIC HEATER
ACCESSORY
HEATER MODEL
NUMBER
102A
SINGLE PT
BOX MODEL
NUMBER
104B
SINGLE PT
BOX MODEL
CRHTR,CRSIN
NUMBER
105A
SINGLE PT
BOX MODEL
NUMBER
104B+104B
SINGLE PT
BOX MODEL
NUMBER
104B+105A
SINGLE PT
BOX MODEL
NUMBER
SINGLE PT
BOX MODEL
NUMBER
INSTALLER NOTE:
1.INSTALL ACCESS. HEATER AND/OR POWER EXHAUST PER INSTALL INSTR ENCLOSED
WITH HEATER AND POWER EXHAUST. MARKSPACE "CHECK HERE" FOR MODEL USED.
USE MIN CKT AMPS AND MAX OVER CURRENT DEVICE AMPS LISTED FOR HEATER
AND POWER EXHAUST.
2.HEATERS ARE MANUFACTURED BY EMERSON HEATING PRODUCTS OR TUTCO ELECTRIC.
-
-
037
038
038
CHECK
HERE
VOLTS PH HZ
208/
3 60 13.6/
240
208/
3 60 21.9/
240
208/
3 60 33.4/
240
208/
3 60 43.8/
240
208/
3 60 55.2/
240
HEATER
FLA
15.6
25.3
38.5
50.5
63.8
MIN CKT
AMPS
28.1/28.4
36.3/40.5
50.6/57.0
63.6/72.0
77.9/88.6
FUSE OR
HACR
BREAKER
PER NEC
40/40
40/45
60/60
70/80
80/90
MAXIMUM
OVERCURRENT
POROTECTION
DEVICE
-/-
-/-
-/-
-/-
-/-
MINIMUM
UNIT
DISCONNECT
FLA
28/28
LRA
146/146
FLA
33/37
LRA
146/146
FLA
47/52
LRA
146/146
FLA
59/66
LRA
146/146
FLA
72/82
LRA
146/146
FLA
LRA
*50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0**50TC-A06A2A5A0A0A0*
Fig. 2 -- Unit Informative Data Label, Power Exhaust Installed
C10532
8
Terminal Block TB10 (208/230--V Units)
Two small term inal blocks (designated TB10) are
included in these single--point boxes used on select
208/230--3--60 units.
SPB PNO CRSINGLE_
043A00
045A00
049A00
051A00
053A00
054A00
TB10 is a small single--pole terminal block, 2--1/2--in. (63
mm) long with seven ¼-- in. male quick--connect
terminals. One or two terminal blocks are used to aid in
re--arranging the unit’s base cooling power circuit into two
circuits, each under 60--A MOCP. On units using both
TB10 blocks, the indoor fan motor is separated into the
second circuit. On units using only a single TB10 block,
Compressor 2 is separated into the second circuit.
On the largest units and on all AC--3 (50LC) units, the
TB10 blocks a r e not used and may be discarded. The tap
conductors from fuse blocks FU2 and FU3 are connected
in parallel to the main control box’s power terminal block.
See unit--SPB connection figures in the Appendix section.
The following tables indicate TB10 use on AC--1, AC--2,
HP--1 and HP--2 units using these single point boxes:
AC--1
AC--1 SPB TB10 Qty
08 (090,091)
09 (101,102)
12 (120,121)
14 (150)
16 (180)
043A
045A
049A
051A
049A
051A
049A
051A
049A
051A
053A
2
2
2
1
NR
AC--2
AC--2 SPB TB10 Qty
07 (072) 043A 2
08 (090)
09 (102)
12 (120)
14 (150)
049A
051A
049A
051A
049A
051A
049A
051A
2
2
1
NR
HP--1
HP--1 SPB TB10 Qty
049A
08 (090)
09 (102)
12 (120)
14 (150)
051A
053A
049A
051A
053A
049A
051A
053A
054A
051A
053A
054A
2
2
1
NR
HP--2
HP--2 SPB TB10 Qty
07 (072)
08 (090)
09 (102)
12 (120)
043A
045A
049A
051A
053A
049A
051A
053A
054A
049A
051A
053A
054A
2
2
1
NR
GENERAL INSTALLATION
SEQUENCE
1. Pre-- stage heater packages and single point boxes by
placing the required component cartons at each unit.
2. Check the heater sales package number and single
point box part number (if used) against the part
numbers on the unit’s infoplate. See Fig. 1 and 2 for
typical data.
3. Disconnect power wiring into unit control box from
factory--installed disconnect switch or HACR breaker a nd withdraw wiring from control box.
4. Install the single point box and connect power
wiring tap conductors to field power terminals in
main control box.
5. Install the electric heater module(s) and connect
heater power conductors to single point box or main
unit control box per appropriate connections figure.
(See Appendix A, B and C.)
6. Connect the heater control contactors to unit terminal block TB4.
7. Mark the unit infoplate to indicate which heater
module(s) have been installed.
CRHTR,CRSIN
9
8. Note the required wire size ampacity for the field
power supply conduct ors as marked on the unit info
plate as MIN CKT AMPS for accessory heater(s)
plus convenience outlet and power exhaust when
provided. Select and install suitable field power
conductors from external safety disconnect to unit
power connection points, or confirm wiring already
provided is suitable for required MIN CKT AMPS.
MANUAL RESET
LIMIT SWITCH
CONTROL
BOX
2
1
1
1
2
1
3
3
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
DRIP BOOT
BRACKET
MOUNTING
SCREWS
POWER
WIRES
FOAM
CRHTR,CRSIN
BUSHING
HEATER
RELAYS
HEATER
MOUNTING
SCREWS
21
23
11
13
A
L
LIE
D
P
A
C
O
R
P
.
M
O
DE
L
N
O
.
O
D
E
R
I
A
L
N
O.
2
2
.
2
ISTED
AI
R
NDITIONIN
1
G
2
3
UI
P
ACCESS
346
N
.
3
P
/
N
2
5
6
10
RE
V
4
Fig. 3 -- T ypical Single Point Kit Installation
UNIT SPECIFIC INSTALLATION INSTRUCTIONS
The unit--specific installation instructions are presented in
two sections, groupe d by common chassis and control box
design. Section 1 covers smaller chassis models and starts
on page 10. Section 2 covers the large chassis models and
starts on page 15. See tabl e below for section assignment
for specific unit types and sizes.
C13467
INSTALLATION INSTRUCTIONS,
SECTION 1
Product Groups/Sizes included in this section:
AC--1 04--14 (036--150)
AC--2 04--12 (036--120)
AC--3 04--07
HP--1 04--12 (036--120)
HP--2 04--09 (036--090)
Check sales packages – Following the project drawing
schedule tables or submittal documents, select the
scheduled heaters and single point boxes (if used) and
place at each unit.
Compare the sales package number(s) for scheduled
heater modules against the approved usage table on the
unit’s info plate. See Fig. 1 and 2 for typical plate data. If
the scheduled heater usage does not appear on the unit
info plate label, STOP. Contact the project engineer or the
local distributor sales office for clarification.
Open the cartons and inspect for damage.
Disconnect field power supply
1. Disconnect power to the unit. Lock ----out/tag----out
on unit disconnect switch.
2. Open and remove the access panel and cover to the
main control box.
3. Use a voltmeter to check that no power is present at
unit terminal block.
DISCONNECT MOUNTING
LOCATION
Unit
Size
04/036
05/048
06/060
07/072
08/090
09/102
11
12/120
14/150
16/180
Group
AC--1
AC--2 AC--3 HP--1 HP--2
SECTION 1 UNITS
SECTION 2 UNITS
MAX. TEMP/
UNIT BLOCK-OFF
PAN EL
OUTDOOR
ACCESS PANEL
STATIC LABEL
Fig. 4 -- Typical Access Panel Location
(AC--1/HP--1 04--07/036--072, HP--2 04--06 9036 -- 060,
AC--2,3/HP--04--06/036--060)
INDOOR
ACCESS
PAN EL
C11510
10
DISCONNECT MOUNTING
LOCATION
UNIT
BLOCK-OFF
PAN EL
Fig. 5 -- Typical Access Panel Location
(AC--1 08-- 14/090--150, AC--2 07-- 12/072 -- 120,AC--3 07,
HP--1 08--23/090--120, HP--2 07--09/072--102)
OUTDOOR
ACCESS PANEL
MAX. TEMP/
STATIC LABEL
INDOOR
ACCESS
PANEL
C11511
trol box whic h are not used must be plugged before
installing the SPB. Use foil tape or reinstall the
bushings from the outside of the control box prior to
securing the SPB. (See Fig. 9.)
8. Remove the single point box cover. Secure single
point box to the underside of the control box with
the 2 screws provided. (See Fig. 3.) Re--install bushing on the SPB tap conductors. (See Fig. 9.)
9. Secure the rainshield (c onduit drip boot bracket) assembly to the back of the single point box with 2 of
the screws provided. (See Fig. 3.) The channel portion of the bracket assembly extends to the top panel behind the control box. Secure all wires to bracket with field--supplied wire tie as shown. (See Fig.
13.)
MAIN
CONTROL
BOX
(All units except large [3 outdoor fan] cabinet)
SINGLE POINT BOX
(NOT SHIPPED WITH
UNIT)
HEATER
MODULE
(LOCATION 1)
Fig. 6 -- Typical Component Location
HEATER
MODULE
(LOCATION 2)
CENTER
POST
HEATER
COVERS
HEATER
MOUNTING
BRACKET
4. Remove control box cover and center post. Save
screws.(SeeFig.6.)
5. If unit does not have the factory--installed disconnect or HACR opti on or has not had field power
wiring connected, skip to Step 6.
When unit is equipped with factory--installed disconnect or HACR or has field power wiring connected, disconnect the power leads at the control box
terminals and withdraw the conductors from the
control box.
6. Add seal strip to the rear bottom corner of the control panel as shown in Fig. 7. Foil tape ope n screw
holes on the back of the single point box as shown
in Fig. 7. Different single point boxes will have different screw holes open.
7. All bushings in the area of the control box where
the single poi nt box (SPB) mounts, m ust be removed prior to securing the SPB to the control box.
(See Fig. 8.) Also, for units installed in the snow
belt, all unplugged holes in the bottom of the con-
C11514
Seal Back Corner
CRHTR,CRSIN
Seal Bottom Corner
Foil Tape Locations
C101085
Fig. 7 -- Seal Strip and Foil Tape Locations
C09005
Fig. 8 -- Control Box -- Bushings to Remove
11
In the unit control box, relocate these wires:
At IFC terminal 13, disconnect
Compressor 1 BLU and Compressor 2
ORN leads; reconnect at TB10A.
At C1 terminal 13, disconne ct ID Fan
YEL lead; reconnect at TB10B.
At C1 terminal 11, disconnect BLK jumper;
reconnect to IFC terminal 11.
Route the first set of tap conductors
(attached at upper fuse block, with
bushing per Step 5) into the main control
box; connect at:
BLK: C1 terminal 11
YEL: C1 terminal 13
BLU (long lead with terminal): TB10A
C09006
Fig. 9 -- Bushings Replaced from Outside Control Box
Route the second set of tap conductors
(attached at second fuse block) into the
main control box; connect at:
CRHTR,CRSIN
box.
a. Single point boxes with two or three tap con-
ductors--Route the tap conductors (with bushing
added per Step 5) into the unit main control box.
Connect the power tap conductors to the designated terminals in the unit’s control box for field
power connections. Refer to the wiring diagram
in the unit, to unit installation instructions for
Field Power Wiring Connections or to Appendix
A, B or C.
b. Single point boxes with six tap conductors
(CRSINGLE043A00, 045A00, 049A00, 051A00,
053A00 and 054A00)
These single point boxes include two sets of
three----lead power t ap conductors connected to
two separate fuse blocks, at FU2 and FU3.
These kits also include two terminal blocks
(TB10A and TB10B) and attachment screws; the
TB10 block usage will be two, one or none,
basedonbaseunit.
Refer to TB10 usage tables on page 9 to
determine quantity required for this unit.
10. Connect power tap conductors to unit main control
BLK: IFC terminal 11
YEL (long lead with terminal): TB10B
BLU: IFC terminal 13
(2.) Units requiring ONE TB10 terminal block
Locate two 42--in (1067 mm) BLU and YEL
wires with single insulated female terminal
shipped in a bag with this kit.
At the single point box, locate the BLU tap
conductor on fuse block FU3 (second block);
disconnect and discard. Connect the 42--in
BLU wire to FU3.
Mount one TB10 terminal block in the unit’s
control box between compressor contactors
C1 and C2. (See Fig. 10.)
S Relocate these wires:
At IFC terminal 13, disconnect Compressor
2 ORN and OFM BLU leads; reconnect
at TB10.
S Remove these leads:
At C1-- --11, remove BLK jumper to C2----11.
Discard.
At C1-- --13, remove YEL jumper to C2----13.
Discard.
(1.) Units requiring TWO TB10 terminal blocks
Mount these terminal blocks in the unit’s
control box next to compressor contactor
C1. (See Fig. 10 and Appendix A or C.)
Locate two 42--in (1067 mm) BLU and YEL
wires with single insulated female terminal
shipped in a bag with this kit.
At the single point box, locate the BLU tap
conductor on fuse block FU2 (upper block);
disconnect and discard. Connect the 42--in
BLU wire to FU2.
Route the first set of tap conductors
(attached at upper fuse block, with bushing
per Step 5) into the main control box;
connect at:
BLK: C1 terminal 11
YEL: C1 terminal 13
BLU: IFC terminal 13
Route the sec ond set of tap conductors
(attached at second fuse block) into the main
control box; connect at:
BLK: C2 terminal 11
YEL: C2 terminal 13
At the single point box, locate the YEL tap
BLU: T B10
conductor on fuse block FU3 (second block);
disconnect and discard. Connect the 42--in
YEL wire to FU3.
12
(3.) Units requiring NO TB10 terminal block
Route the first set of tap conductors
(attached at upper fuse block, with bushing
per Step 5) into the main control box.
Route the sec ond set of tap conductors
(attached at second fuse block) into the main
control box.
Connect both sets of tap conductors to unit
terminal block TB1; connect at:
BLK: terminal 11
YEL: terminal 12
BLU: terminal 13
CRHTR,CRSIN
Fig. 10 -- TB10 Locations and Connections
HEATER
012A
CIR#1
CIR#2
HEATER
017A
C101084
13
Installing Electric Heater
CRHEATER101A00-- --109A00,
CRHEATER110A----119A00
CRHEATER264A00-- --269A00
CRHEATER297A00-- -- 299A00,
CRHEATER301A00
CRHEATER308A00
CRHEATER316A00-- --322A00
1. Identify heater cover(s) to remove. See Fig. 14 and
15.
a. All two--heate r installations: Remove both
heater covers. Save covers and screws.
b. All single--heater installations EXCEPT
CRHEATER265A00 – 269A00, 299A00,
301A00:
Remove the heater cover at Heater 1 position.
Save cover and screws.
c. Heater CRHEATER2650A-- -- ---- 269A00 ONLY:
Remove the heater cover at Heater 2 position.
CRHTR,CRSIN
Save cover and screws.
d. Heater CRHEATER301A00 ONLY: Remove
both heater covers. Save the screws. Discard
the covers.
2. Open the heater package(s) and remove the heater
module, he ater support track (where provided),
screws, wring label, miscellaneous parts.
3. All heaters EXCEPT CRHEATER101A00--109A00,
265A00--269A00 and 301A00: Install heater slide
bracket(s) from the heater kit through the bottom of
the heater mounting hole(s) and fasten each with the
two screws provided. (See Fig. 15.)
4. Install the heater module(s) in the heater support
bracket opening(s). On two--heater installations
where there is no key--forced heater position, install
the heater with the higher kW rating in heater position 1.
a. Heaters CRHEATER101A00--109A00,
265A00--269A00:
To i nstall module, insert heater frame into location notch in heater bracket opening in unit and
slide heater through the opening. Fasten heater
module to heater mounting bracket with the 4
screws saved from Step 1. (See Fig. 14.)
b. Heater CRHEATER301A00 only: To install
module, insert both heater frames into location
notches in heater bracket opening in unit and
slide heater through the opening. Fasten heater
module to heater mounting bracket with the 4
screws saved from Step 1. (See Fig. 17.)
c. All other heaters: To install m odule, engage
flange on heater with track in unit and slide
heater through mounting bracket opening. Fasten
heater module to heater mounting bra cket with
the 4 screws saved from Step 1. (See Fig. 15.)
5. Single----phase heater conversion
208/230----v heat ers CRHEATER101A00 through
104B00 are factory----wired for 3-- -- phase applications but can be converte d to single----phase by
changing one wire as described below.
Three----phase applications
For single-- --phase applications,
:SkiptoStep6.
rewire the heater as
follows (see Fig. 11):
a. Connect 10----gauge RED wire provided with
heater package to splice connector included in
package.
b. Remove YEL wire from heater relay HR at ter-
minal 11.
c. Reconnect the YEL wire from step b to splice
connector on RED wire.
d. Using the wire tie provided, fasten RED wire to
heater power wire harness near existing wire tie
on hea ter module. This provides strain relief for
the red wire. See Fig. 12.
Connect the BLU and YEL conductors i n the
heater power wire harness to same L1 pole on
single point box TB or FU fuse block. Connect
the BLK and RED conductors in the heater power wire harness to same L2 pole on single point
box TB or FU fuse block. See Fig. 11 .
Connect YEL
at splice
CONNECT
TO L2
CONNECT
TO L1
LEGEND
HR -- Heater Relay
HTR -- Heater
LS -- Limit Switch
Fig. 11 -- Single-- Phase Heater Wiring
Wire Tie
RED WIRE
21
HEATER
POWER
WIRE
HARNESS
SPLICE
CONNECTOR
Fig. 12 -- Typical Single-- Phase Wiring Installed
23
11
13
M
OD
E
L
N
O
.
OD
E
R
I
A
L
N
O
.
2
2
I
S
T
N
D
U
I
P
34
.2
E
D
A
I
R
1
I
T
I
O
N
I
N
G
2
3
A
C
C
E
S
S
6
N
.
3
P
/
N
2
-
5
61
RE
0-4
V
Disconnect
YEL
C13448
C13449
14
6. Route power wires from heater module(s) through
the foam bushing in the center partition and into the
single point box. (See Fig. 3.) Connect to terminal
block or fuse blocks per schematics in Appendix A
or B. See Tables at beginning of each Appendix to
identify the appropria te figure.
All heaters are single bank heaters except
CRHEATER111A00, 112A00, 268A00, 269A00,
301A00, 318A00 and 321A00 which are dual bank
heaters. These heaters will be wired as two heaters
(i.e., 6 leads). Fusing is shown pictorially on the
unit wiring schematic label.
If no single point box is required for the unit and
heater combination, run the heater power supply
wiring through the grommet holes to the main unit
control box’s field power connection points or to
optional factory--supplied disconnect.
7. Factory control wiring for heaters runs from unit
control box to terminal block TB--4, mounted in the
heater compartment above module 1 location. (See
Fig. 6 and 18.) Connect the heater control wiring at
TB--4.
30V—OR 200V—RD OV—YL
N—TRAN 3O—BV2075
E 60 HZ 30-8703
BD236B
D 24V 75VA
C—COMM
KEY FOR MODULE LOCATON 1
C09010
Fig. 14 -- Typical Electric Heat Installation
(AC--1 Sizes 04 to 07 and 036 to 072, AC--2 Sizes 04--06,
HP--1 Sizes 04-- 07 and 036 to 072, HP--2 Sizes 04--06)
CRHTR,CRSIN
CONDUIT CONDUIT
DRIP BOOT
Fig. 13 -- Typical Conduit Installation
WIRE TIE
C08417
HEATER
SLIDE
TRACK
FLANGE
TRACK SCREWS
KEY FOR MODULE LOCATION 1
C10557
Fig. 15 -- Typical Module Installation
(AC--1 Sizes 08 to 14 and 090 to 150, AC--2 Sizes 07--12,
HP--1 Sizes 08-- 12 and 090 to 121, HP--2 Sizes 07--09)
15
C11513
CRHTR,CRSIN
Fig. 16 -- Heater Bracket Keyway
(AC--2, HP--2 Size 07 and 14 Units Only)
Fig. 17 -- Installing CRHEATER301A00
16
C13447
LCTB
CONTL
BOARD
2
3
12
Field
Connections
VIO
ORN
BRN
Elec Htr
VIO
VIO
BRN
BRN
BRN
HR2
HR1
ORN
13
TB4
VIO
VIO
2
VIO
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
BRN
Fig. 18 -- Accessory Electric Heater Control
Connections (AC--1 Except Size 16 and 180,
AC--2 Except Size 14 and 150)
BRN
C08331
DEFROST
BOARD
E-HEAT
P3-3
Field
Connections
ORN
BRN
ORN BRN
13
TB4
VIO BRN BRN
VIO
Elec Htr
VIO HR2
HR1
VIO BRN
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
Fig. 20 -- Accessory Electric Heater Control
Connections (HP--1 Except Size 14 and 150,
HP--2 Except Size 12 and 120)
BRN
C09013
CRHTR,CRSIN
C11555
Fig. 19 -- Accessory Electric Heater Control Connections
(AC--2, Size 06 and 060, 575V only)
C11554
Fig. 21 -- Accessory Electric Heater Control Connections
(HP--2, Size 06 and 060, 575V only)
17
MODE
ERIAL
ISTED
NDITIONING
U
I
P
34
ACCESS
6
installed disconnect or HACR power leads at TB1
and withdraw the wiring from the unit control box.
3. Remove outdoor access, control box, and left indoor
access panels from the unit. See Fig. 23. Fig. 24
shows the unit with the panels alrea dy removed.
4. Optional – The center post m ay be removed to facilitate wiring.
5. Remove the bushings and plug from the control
panel per Fig. 25. Save the bushings and discard the
21
23
11
13
plug.
6. Add seal strip to the rear bottom corner of the control panel as shown in Fig. 26.
7. Foil tape open screw holes on the back of the single
L
NO.
OD
NO.
AIR
1
23
N
.
3
P
/ N
2
-
5610-4
RE
V
point box as shown in Fig. 26. Different single point
boxes will have different screw holes open.
SINGLE POINT BOX
(NOT SHIPPED WITH
UNIT)
CENTER
POST
HEATER
COVERS
CRHTR,CRSIN
Fig. 22 -- Typical 3--Phase Wiring Installed
INSTALLATION INSTRUCTIONS,
SECTION 2
Product Groups/Sizes included in this section:
AC--1 16 (180)
AC--2 14 (150)
AC--3 08--12
HP--1 14 (150)
HP--2 12 (120)
Check sales packages – Following the project drawing
schedule tables or submittal documents, select the
scheduled heaters and single point boxes (if used) and
place at each unit.
Compare the sales package number(s) for scheduled
heater modules against the approved usage table on the
unit’s infoplate. See Fig. 1 and 2 for typical plate data. If
the scheduled heater usage does not appear on the unit
infoplate label, STOP. Contact the project engineer or the
local distributor sales office for clarification.
Open the cartons and inspect for damage.
Disconnect field power supply
1. Disconnect power to the unit. Lock ----out/tag----out
on unit disconnect switch.
2. Open and remove the access panel and cover to the
main control box.
3. Use a voltmeter to check that no power is present at
unit terminal block.
Install Single Point Box (CRSINGLE047A00,
050A00----054A00)
1. Remove kit s from boxes and verify that all of the
correct parts have arrived undamaged.
2. If power is already connected to unit, disconnect all
power to the unit per correct lock-- --out/tag-- --out
procedures.
Disconnect field power wiring or optional factory--
C08137
MAIN
CONTROL
BOX
HEATER
MODULE
(LOCATION 1)
HEATER
MODULE
(LOCATION 2)
HEATER
MOUNTING
BRACKET
C11515
(AC--1 16/180, AC --2 14--150, AC--3 08--12, HP1 14/150, HP--2
12/120)
Fig. 23 -- Typical component Location
18
Control Box
Access
Panel
Outdoor
Access
Panel
Heater Covers
Fig. 24 -- Typical Unit with Access Panels Removed
Left
Indoor
Access
Panel
Plug Location
C10170
CRHTR,CRSIN
Single Point Box Mounting Screws
Fig. 25 -- Single Point Box Installation Details
Bushings
(Re-installed)
C10169
19
conductors (pigtails) from the single point box to
the unit’s power terminal block TB--1 per unit
label wiring schematic and per Appendix A or B
and connection figures. A representative installa-
Seal Back Corner
tion of two 480V heaters and corresponding
single point box is shown in Fig. 28, 29, and 30.
b. CRSINGLE051A00, 053A00 and 054A00
These kits include two sets of tap conductors
Seal Bottom Corner
(blue, yellow and black pigtails) connected at
fuse blocks 1 and 2. Connect these l eads in parallel to the unit’s power terminal block TB--1 per
the unit label wiring schematic and per Appendix A, B or C and connection figures.
(These kits also include two small terminal
blocks (TB10). The TB10 blocks are not used
Foil Tape Locations
C101085
Fig. 26 -- Seal Strip and Foil Tape Locations
Install CRHEATER288A00--296A00
8. Remove the cover from the single point box.
9. Install the single point box under the control panel
CRHTR,CRSIN
with two screws down through the control panel
(Fig. 25) and one screw (not shown) into the center
post. (See Fig. 25.) Holes have been provided.
Foam wire gui des in the center post may have to be
removed. If center post was removed per step 4, the
single point box will have to be screwed into it
later.
10. The single point box kit will contain two rain shield
brackets, a larger bracket with boot seal and a smaller (shorter) bracket without a seal. Remove the
seal from the larger bracket and push the conduit
drip boot seal into the short rain shield bracket. (See
Fig. 27.) Discard the larger bracket.
Conduit Drip Boot
NOTE 1: Heaters with Restrictor Plates
Heater part numbers CRHEATER288A00, 289A00,
290A00, 294A00, 295A00 and 296A00 have a Restrictor
Plate attached to the heater base plate (see Fig. 33). The
horizontal projection of this plate engages a slot on the
lower left--hand side of Heater Position 2 (right--hand
opening), thus permitting a heater mounting in the
right--hand he ater opening and preventing its inadvertent
with large cabinet units in this section; discard.)
1. Remove and save the heater covers.
2. Install heater slide track(s) from the heater kit
through the bottom of the heater mounting hole(s)
and fasten each with the two screws provided. (See
Fig. 31.)
3. Install the heater(s) (Fig. 32, 230V shown) into the ir
mounting location(s) using the screws provided.
Tables 2 and 3 give the correct heater location as a
function of heater size, voltage, and supply air flow
direction and unit supply air opening size
mounting in the left--hand heater opening.
On certain heater applications in Tables 2 and 3,
designated by dagger ({) symbol, a heater with a
Restrictor Plate must be i nstalled in the left--hand heater
opening. On these installations ONLY, remove the two
screws at the Restrictor Plate, remove the plate and
discard the plate and screws. Apply foil tape over the
open scre w holes.
NOTE 2: Heater CRHEATER295A00, Vertical Unit,
Table 3.
The mounting location for heater CRHEATER295A00
differs based on unit type. When this heater is installed in
a unit type AC--1, AC--2 or AC--3 with vertical supply
duct (unit base opening size is approximately 36 x 28
Rain Shield Bracket
C10167
Fig. 27 -- Rain Shield Installation
inches), the heater is located in Heater Position 2
(right--hand opening), with Restrictor Plate intact.
When this heater is installed in a unit type HP--1 or HP--2
with vertical supply duct (unit base opening size is
11. Install the rain shield bracket to the left and behind
the single point box using the two screws and holes
provided.
12. Re--install the bushings removed in Step 5.
13. Connect the tap conductors.
approximately 30 x 16 inches), the heater is located in
Heater Position 1 (left--hand opening) and Restrictor Plate
must be removed. On these installations ONLY, remove
the two screws at the Restrictor Plate, remove the plate
and discard the plate and screws. Apply foil tape over the
open scre w holes.
a. CRSINGLE047A00, 050A00 and 052A00
Connect the blue, yellow, and black power tap
20
Fig. 28 -- Heater Wiring
C10174
CRHTR,CRSIN
Fig. 29 -- Typical Single Point Box Wiring
21
C10172
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