International Comfort Products CRHEATER101A00, CRHEATER112A00, CRHEATER103B00, CRHEATER104B00, CRHEATER113B00 Installation Manual
...
CRHEATER101A00-CRHEATER112A00,
CRHEATER103B00,CRHEATER104B00,
CRHEATER113B00 - CRHEATER116B00
CRHEATER117A00-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 (CRHEATER101A00-112A00,
103B00, 104B00, 113B00-116B00, 117A00-119A00,
264A00-269A00, 288A00-299A00, 301A00, 308A00,
A00-322A00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
316
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: ELECTRIC 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 qualified service personnel
should install, repair, or service air-conditioning
equipment.
Untrained personnel can perform the basic maint enance
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 A C --- 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
CRHEATER101A00-112A00,103B00,
104B00,113B00-116B00,117A00-119A00
CRHEATER264A00-269A00
CRHEATER297A00, 298A00, 301A00,
308A00, CRHEATER316A00-321A00
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 1 8 --- i n / 4 4 9 m m )
Ter m i na l b lo ck 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 cl a m p 1
Seal strip 1
1
CRSINGLE038A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 1 8 --- i n / 4 4 9 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 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 cl a m p 1
Seal strip 1
1
QTY CONTENTS
1 Heater module
1 Heater slider track*
4 Screws*
1 Wiring label
1
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
Red wire (10 gage){
CRSINGLE039A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 1 8 --- i n / 4 4 9 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 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 cl a m p 1
Seal strip 1
2
1
CRSINGLE040A00
CRSINGLE044A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 1 8 --- i n / 4 4 9 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 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 cl a m p 1
Seal strip 1
CRSINGLE041A00
ITEM DESCRIPTION QUANTITY
Single Point Box Housing Assembly
( H e i g h t 1 8 --- i n / 4 4 9 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 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 cl a m p 1
Seal strip 1
ITEM DESCRIPTION QUANTITY
1
Single Point Box Housing Assembly
( H e i g h t 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck 1
Fuse block 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 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck / fu se h ol d er 1
Fuse block 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 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck 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 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 1
Te r m in al b l o ck ( 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 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck / fu se h ol d er 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck 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 2 5 --- i n / 6 3 9 m m )
Ter m i na l b lo ck 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck / Fu s e ho l d er 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck / fu se h ol d er 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck 1
Fuse block 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 3 3 --- i n / 8 4 5 m m )
Ter m i na l b lo ck 1
Fuse block 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 select 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 ea rlier 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, 103B00, 104B00, and
113B00 through 116B00, the heater Model Number (as marked
on the heater infoplate) is the same as the Sales Package
number. On heaters CRHEATER101A00 through 119A00,
103B00, 104B00, and 113B00 through 116B00, 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.) Some heaters are "keyed" to be able to go in only one
slot. These keyed heaters have been designed and qualified
to go only into the designated slot. Do not remove the key
for the purpose of putting the heater in the wrong slot.
Placing a keyed heater in the wrong slot could lead to
overheating and unit damage from the heater not operating
properly.
NOTE: The following
CRHEATER101A00-109A00, 297A00, 298A00, 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.
heaters do not use the slide track:
Single Point Boxes and Fuses
The Single Point Box (SPB) kits provide a field power
termination location plus an enclosure for heater fuses
when required by code. The SPBs are insta lled 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 tap 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 minor
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 prote ction to the heater and no internal fusing
is required. If two heater modules are insta lled, a single
point box that contains only a field 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 othe r
electrical options of the unit as shipped from the factory.
When field installed accessory electric heaters are added
or changed in the unit, the HACR may no longer be of the
proper amp rating 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 cont ain one or two heater control
contactors. If two heater modules 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 connected 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
A
C R H E A T E R 1 0 1
or
B
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-
0 0
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
FUSE OR
HACR
BREAKER
PER NEC
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/
17.259000
. 1 - Unit Informative Data Label
Fig
MAXIMUM
OVERCURRENT
PROTECTION
DEVICE
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
HACR
BREAKER
PER NEC
40
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 terminal 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 rearranging
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) unit s, the
TB10 blocks are 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 and 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 infoplat e to indicate which heater
module(s) have been installed.
CRHTR,CRSIN
9
8. Note the required wire size ampacity for the field
power supply conductors 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
13
3
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
DRIP BOOT
BRACKET
MOUNTING
SCREWS
POWER
WIRES
FOAM
CRHTR,CRSIN
BUSHING
HEATER
RELAY S
HEATER
MOUNTING
SCREWS
21
23
11
13
A
L
LIED
P
A
C
O
RP
.
M
O
DE
L
N
O
.
O
D
E
R
I
A
L
N
O.
2
2
.
2
ISTED
AI
R
NDITIONING
1
2
3
UIP
ACCESS
346
N
.
3
P
/
N
2
56
10
RE
V
4
Fig. 3 - Typical Single Point Kit Installation
UNIT SPECIFIC INSTALLATION INSTRUCTIONS
The unit-specific installation instructions are presented in
two sections, grouped 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 18. See table below for section assignment
for specific unit types and sizes.
C13467
SECTION 1
INSTALLATION, SMALL-MEDIUM
CABINET
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 (036-102)
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.
Remove the outdoor access panel, control box
cover, and indoor access panels from the unit.
Save screws. See Fig. 4-6.
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 04-06/036-060,
AC-2,3 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 08-12/090-120, HP-2 07-09/072-102)
OUTDOOR
ACCESS PANEL
MAX. TEMP/
STATIC LABEL
INDOOR
ACCESS
PANEL
C11511
trol box which 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 (conduit 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 option 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 open 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 point 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, reloca te these wires:
At IFC terminal 13, disconnect
Compressor 1 BLU and Compressor 2
ORN leads; reconnect at TB10A.
At C1 terminal 13, disconnect 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 terminal s 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 tap conductors connected to
10. Connect power tap conductors to unit main control
two separate f
use 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.
BLK: IFC terminal 11
YEL (long lead with terminal): TB10B
BLU: IFC terminal 13
(2.) Units requiring ONE TB10 terminal block
Locate t wo 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 t he unit’s
control box between compressor contacto
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.
rs
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 t wo 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: TB10
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 second set of tap conductors
(attached at second fuse bl ock) 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-112A00, 103B00, 104B00
CRHEATER113B00-116B00, 117A00,
CRHEATER264A00-269A00
CRHEATER297A00-299A00,
CRHEATER301A00,CRHEATER308A00
CRHEATER316A00-322A00
1. Identify heater cover(s) to remove. See Fig. 14 and
15.
a. All two--heater installations: Remove both
heater covers. Save covers and screws.
b.
All single--heater installations EXCEPT
CRHEATER265A00
301A
00:
Remove the heater cove r at Heate r 1 position.
Save cover and screws.
c.
Heater CRHEATER265A00-269A00 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, heater support track (where provided),
screws, wring label, miscell aneous 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 install module, insert heater fram e 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 instal l module, engage
flange on heater with track in uni t and slide
heater through mounting bracket opening. Fasten
heater module to heater mounting bracket with
the 4 screws saved from Step 1. (See Fig. 15.)
5.
Single-phase heater conversion 208/230-v heaters
CRHEATER101A00 through 104B00 are factorywired for 3-phase applications but can be
converted to single-phase by changing one wire as
described below.
-269A00, 299A00,
Three-phase applications: Skip to Step 6.
For single-phase applications, rewire the heater as
follows (see Fig. 11):
a.
Connect RED wire provided with kit to Heater
Relay (HR) and to L1 as shown.
b.
Disconnect YELLOW wire from HR Terminal
2 and reconnect to HR Terminal 3.
c.
Using the wire tie provided, fasten the RED
wire to heater power wire harness near existing
wire tie on heater module. This provides strain
relief for the RED wire. (See Fig. 12).
Connect the BLACK and RED conductors in the heater
power wire ha rness to the same L1 pole on single point
box TB or fuse block. Connect the BLUE and YELLOW
conductors in the heater power wire harness to the same
L2 pole on single point box TB or fuse block. (See Fig.
11.)
LEGEND
HR - Heater Relay
HTR - Heater
LS - Limit Switch
Control Wiring
Power Wiring
C14214
Fig. 11 - Single--Phase Heater Wiring
C14216
Fig. 12 - Typical Single--Phase Wiring Installed
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 appropriat e 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 t o terminal block TB--4, mounted in the
heater compart ment 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
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
C—COMM
CONDUIT CONDUIT WIRE TIE
DRIP BOOT
3 - Typical Conduit Installation
Fig. 1
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
CRHTR,CRSIN
Fig. 16 - Heater Bracket Keyway
C11513
(AC-2, HP-2 Size 07 and 14 Units Only)
and CRHEATER113B00-116B00
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
BRN
Fig. 18 - Accessory Electric Heater Control
Connections (AC-- 1 Except Size 16 and 180,
AC-- 2 Except Size 14 and 150)
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
Fig. 19 - Accessory Electric Heater Control Connections
(AC-- 2, Size 06 and 060, 575V only)
C11555
C11554
Fig. 21 - Accessory Electric Heater Control Connections
(HP-- 2, Size 06 and 060, 575V only)
17
CRHTR,CRSIN
Fig. 22 - Typical 3--Phase Wiring Installed
SECTION 2
INSTALLATION, LARGE CABINET
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)
C14217B
Install Single Point Box (CRSINGLE047A00,
049A00, 050A00-054A00)
1. Remove kits 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-installed
disconnect or HACR power leads at TB1 and withdraw the
wiring from the unit control box.
3.
Remove outdoor
access panels from the unit and save screws.
See Fig. 23. Fig. 24 shows the unit with the panels
already removed.
4. Optional – The center post may be removed to facilitate wiring.
5. Remove the bushings and plug from the control
panel per Fig. 25. Save the bushings and discard the
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
point box as shown in Fig. 26. Different single point
boxes will have different screw holes open.
SINGLE POINT BOX
(NOT SHIPPED WITH
UNIT)
access, control box, and left indoor
CENTER
POST
HEATER
COVERS
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.
MAIN
CONTROL
BOX
(AC-- 1 16/180, AC--2 14--150, AC-- 3 08 --12, HP1 14/150, HP--2
HEATER
MODULE
(LOCATION 1)
Fig. 23 - Typical Component Location
HEATER
MODULE
(LOCATION 2)
12/120)
HEATER
MOUNTING
BRACKET
C11515
18
Control Box
Access
Panel
Outdoor
Access
Panel
4 - Typical Unit with Access Panels Removed
Fig. 2
Heater Covers
Plug L
Left
Indoor
Access
Panel
ocation
C10170
CRHTR,CRSIN
Single Point Box Mounting Screws
Fig. 2
5 - Single Point Box Installation Details
Bushings
(Re-installed)
C10169
19
conductors (pigtails) from the single point box to
the unit’s powe r t erminal 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 pigt ails) connected at
fuse blocks 1 and 2. Connect these leads 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
Fig
26 - Seal Strip and Foil Tape Locations
.
C101085
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 guide s 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 CRHEATE R288A00, 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 t he
right--hand heater 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 their
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 installed 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 screw 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
Fig. 2
7 - Rain Shield Installation
C10167
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 ope ning 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 screw holes.
a. CRSINGLE047A00, 050A00 and 052A00
Connect the blue, yellow, and black power tap
20
Fig. 28 - Heater Wiring (2-pole contactor shown, has been replaced with 3-pole contactor.)
C10174
CRHTR,CRSIN
Fig. 29 - Typical Single Point Box Wiring
21
C10172
Single Point Box
Power Wires
C10175
Fig. 30 - Typical Control Panel Wiring
CRHTR,CRSIN
Mounting Screws
1 - Heater Slide Track Installation
Fig. 3
Heater Slide Track
C10198
22
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