160-127398A_As_Built_Coe_HVAC_0002.pdf

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Attached to
REPLACE HVAC AT ERNEST COE VC Federal contract opportunity
Solicitation number
140P5425R0010
Issued by
Department of the Interior National Park Service Southeast Region

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The document is a set of Red Line As-Built Drawings for the Ernest Coe Visitor Center HVAC replacement project at Everglades National Park in Homestead, Florida. The technical drawings, associated with Contract #P15PC00432, detail modifications to the existing HVAC system, including specifications for air handling units (AHU-1, AHU-2, AHU-3) and condensing units (CU-1A/1B, CU-2A/2B, CU-3A/3B). The drawings include detailed floor plans, mechanical room layouts, roof construction details, and system service literature, documenting the HVAC system upgrades completed on 06/03/2016. The project was prepared for the National Park Service, with William Shelley listed as the Contracting Officer's Representative (COR), and covers modifications to the visitor center's heating, ventilation, and air conditioning infrastructure.

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Wage_Determination.pdf PDF
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Statement_of_Work.pdf PDF

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RED LINE AS-BUILT DRAWINGS

Prepared for:

National Parks Service (NPS) Ernest Coe Visitor Center

40001 SR 9336

Homestead, FL 33034

COR: William Shelley

Location of Project: Ernest Coe Visitor Center Title of Project: Replacing HVAC at Visitor Center

Contract #: P15PC00432 wshelley Typewritten Text Completion Date: 06/03/2016 wshelley

Drawing Number 160/127,398A

TABLE OF CONTENTS

Page

1 RED LINE AS-BUILT DRAWINGS

2 EXHIBIT ROOM SYSTEM SERVICE LITERATURE

3 AUDITORIUM SYSTEM SERVICE LITERATURE

4 MAIN ROOM SYSTEM SERVICE LITERATURE ................................................ 50-102

4.1 AIR HANDLER UNIT

4.2 CONDENSER UNIT

LEGEND

TO

FORT MYERS

PARK BOUNDARY

COUNlY LINE

RANGER STATION

VISITOR CENTER

OBSERVATION TOWER

PUBLIC AIRPORTS

SWAMP OR SLOUGH

--:-:-:-:-:-:-:-:-:-- _- 1 -:-:-:-:-:-- --------- - -- ------

TO- KEY-:-:-- ...: ::: _-:-:-:-:-:---

WEST __ :::::::::---

WATER

LAND OUTSIDE PARK I& EVERGLADES NATIONAL

~" WORLD HERITAGE SITE

I

PARK

SCALE OF MILES

0 5 10

I I I I I I

I

5 0 5 10 15

SCALE OF KILOMETERS

TO FLAMINGO

SHEET

HEADQUARTERS BUILDING

SITE MAP

SUB SHEET

SITE ADDRESS:

40001 STATE ROAD 9336

HOMESTEAD, FL 34139

(j 100

DRAWING INDEX

TITLE

COVER AND INDEX

EXISTING HVAC SYSTEM

MECHANICAL ROOM 1

MECHANICAL ROOM 2

EXHIBIT ROOM AND MAIN LOBBY

0 100

SCALE OF FEET

CONSTRUCTION DRAWINGS

TITLE OF SHEET

MODIFY COE VC HVAC

UNITED STATES

DEPARTMENT OF THE INTERIOR

NATIONAL PARK SERVICE

EVERGLADES NATIONAL PARK

LOCATION WITHIN PARK

ERNEST COE VISITOR CENTER

NAME OF PARK

EVERGLADES NATIONAL PARK

REGION

SOUTHEAST

COUNIY

MIAMI-DADE

DRAWING NO.

127,398

PMIS/PKG NO.

203625

SHEET

_1_oF _Q_

CONCRETE BEAMS

TYPICAL BUILDING SECTION

WALKWAY

6X8 OPEN

END DUCT

6X8 OPEN

END DUCT

ZONE 2

1150 SF

SCALE: NO SCALE

D-5

W/8"~NECK

330 CFM

TYP OF 3

CONDENSING UNITS 2A & 2B

CONDENSING UNITS 3A & 3B

SHEET 4 MODIFICATIONS__/"

CONDENSING UNITS ---..~--..1.._.

1A & 1B

0-3 48"-2 SLOT

MAIN

ROOM

140 CFM

VISITOR CENTER FLOOR PLAN

SCALE: SCALE A

EXISTING AIR HANDLING UNIT DESIGN PARAMETERS

SEE SPECIFICATIONS FOR SIZING NEW UNITS. NEW UNITS DD NOT

NECESSARILY MATCH THE OLD.

UNIT COOLING

HEATING

FAN (CFM) CAPACITY

NUMBER CAPACITY {MBH)

(KILOWATIS)

AHU-1 8000

AHU 2 1100

AHU-3 1320

SHEET 3

· MODIFICATIONS

30X84 OA LOUVER WITH

30X12X84 PLENUM

BEHIND tz9UVER

PORCH

260 27

85 9

79 11

EXISTING CONDENSING

UNIT DESIGN

PARAMETERS

SEE SPECIFICATIONS FOR

SIZING NEW UNITS. NEW

UNITS DO NOT NECESSARILY

MATCH THE OLD.

UNIT COOLING

NUMBER CAPACITY (MBH)

CU-1A

CU-1B

CU-2A

CU-2B

CU-3A

CU-3B

130.0

130.0

41 .5

41.5

37.5

COVERED

WALKWAY

r--__,ff-~.--SHEET 5

MODIFICATIONS

24X10 0-4

580 CFM

60X48 RELIEF AIR R-2

ABOVE PRESENTATION

CEILING

TYP ROOF CONSTR STANDING SEAM

METAL ROOF ON ASPHALT RAG FELT

UNDER LAYMENT &

VAPOR RETARDER

WD BLOCKING

TYP WALL-ROOF DETAIL

HORIZ WO SIDING.

AT INTERIOR THEATER

WALL SUBSTITUTE f' TH

CEDAR SHIP LAP SIDING

FOR BEVELED SIDING-

ALIGN COURSING WITH

EXTl~RIOR

SCALE: NO SCALE

1'-3/4"

~" PLWD SHEATHING---------+i.__j

1 1 /2" RIGID INSUL & 2X4 -------j~-~:l§it

WO STUDS «!) 16" QC-PRESS

TRTD @ EXTERIOR

VAPOR RETARDER

8" CMU ----

SHEET ~5

MODIFIC.~TIONS

2 1/2" METAL

STUDS @ 16" OC

24X24 R-1 W/22X22

NECK AIR RELIEF

0 - 5 48"-4 SLOT W/8"~

NECK 330 CFM (TYP OF 4)

i" PLYWD @ SOUTH AND WEST -----<1'111

WALLS IN EXHIBIT/LOBBY

TYP WALL DETAIL

SCALE: NO SCALE

DESIGNED: SUB SH EET NO. TITLE OF SHEET

TOP OF TIE BEAM

EL 10.20' AFF

DRAWING NO

ZONE 3

880 SF

~ W H SHELLEY

DRAWN:

EXISTING HVAC SYSTEM 160

127,398

SCALE A

8 ' 0 8 ' 16'

W H SHELLEY

TECH. REVIEW:

MPS

DATE:

04/2015

ERNEST COE VISITOR CENTER

EVERGLADES NATIONAL PARK

PMI S NO.

203625

SHEET

~of___§_ erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text erik.venergy Typewritten Text 37.5 erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Typewritten Text

REPLACED WITH NEW CU-1

erik.venergy Polygonal Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Typewritten Text

SECTION OF PLENUM DEMO'D

CONVERTED TO OPEN RETURN

erik.venergy Typewritten Text

LOUVER CAPPED

erik.venergy Line erik.venergy Typewritten Text

REPLACED WITH

NEW AHU-1

erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Oval erik.venergy Line erik.venergy Typewritten Text

SHEET 5 MODIFICATIONS

erik.venergy Polygonal Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Typewritten Text

LOUVER CAPPED

erik.venergy

DAMPER DEMO'D

erik.venergy Typewritten Text

PLENUM DEMO'D

CAPPED AT CEILING

erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygon erik.venergy Typewritten Text

EXISTING RE-DESIGNATED AS

CU-2A & CU-2B

erik.venergy Typewritten Text

EXISTING RE-DESIGNATED AS CU-3

erik.venergy Typewritten Text

CONDENSER DE-COMMISSIONED

& RETURNED TO NPS

erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Typewritten Text

REPLACED WITH NEW AHU-2

erik.venergy Typewritten Text

LOUVER

CAPPED

erik.venergy Typewritten Text

REPLACED WITH

NEW AHU-3

erik.venergy Typewritten Text

DEMO'D R/A PLENUM TO CEILING

CONVERTED TO OPEN RETURN

erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Rectangle erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Typewritten Text 10" erik.venergy Oval erik.venergy Line erik.venergy Polygonal Line erik.venergy Line erik.venergy Typewritten Text

SECONDARY 24"X24" RETURN

WITH 10" ROUND DUCT ADDED

TO SERVICE THEATER

erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygon erik.venergy Polygon erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line

Line

DRILL THROUGH WALL NEAR FLOOR. FOR REFRIGERENT LINES.

ELBOW DOWN AND RUN UNDER DECKING. COVER EXPOSED

REFRIGERANT LINES WITH SHEET METAL PAINTED TO MATCH SIDING

COLOR.

PORCH REMOVE EXISTING OUTSIDE AIR

DAMPER AND SEAL PLENUM WITH

SHEET METAL

1------

ADD I

SUPPORTS AS ------I

REQUIRED I

EXISTING\

10'-11 ·x1'-11 •

CONCRETE PAD

I I

L

ABOVEGROUND ROUTE OF

NEW REFRIGERANT LINES.

CONNECT TO EDGE OF

EXISTING PORCH

REPLACE CONDENSING

UNITS 1A & 1B WITH A

NEW CONDENSING

UNITOR UNITS.

CONNECT TO EXISTING

ELECTRICAL BOXES FOR

POWER

CONCRETE

SIDEWALK

II

EXISTING ELE TRICAL BOXES

EACH WITH A 208V 3111, 125

AMP CIRCUIT

RETURN AIR

30x28

ELECTRICAL BOX FOR

AIR HANDLER 208V, 3111,

45 AMP

FIRE

SPRINKLER

ROOM

MECHANICAL ROOM 1 PLAN

SCALE: SCALE A

EXISTING AIR HANDER UNIT

SCALE: NO SCALE EXISTING CONDENSING UNITS

SCALE: NO SCALE

SEAL 30X84 OUTSIDE AIR INTAKE BY PLACING

1/2'" EXTERIOR GRADE PLYWOOD WITH 2X4

FRAME ANO 1 ~ INCH RIGID INSULATION BEHIND

LOUVERS. PAINT PLYWOOD GRAY TO MATCH

EXISTING SIDING COLOR.

REPLACE AIR HANDLER 1 AND DUCT

HEATER CONNECTING TO THE EXISTING

DUCT WORK

BATHROOM

SUPPLY AIR

36X22

ELECTRICAL BOX FOR

DUCT HEATER 208V, 3!11,

90 AMP

SCALE A

i=, !!iiiil!!!!liiiiiil!O !!!!!!!!!1!!!!!1;

,iiiiiiiiiiii

DUCT SMOKE DETECTOR TO REMAIN

REMOVE EXISTING

OUTSIDE AIR DAMPER

ON BACK SIDE OF

PLENUM AND SEAL

PLENUM

PLENUM

SUPPLY AIR

36X22

REPLACE

DUCT HEATER

REPLACE

EXISTING AIR

HANDLER 1

MECHANICAL ROOM 1 SECTION

SCALE: SCALE A

DESIGNED: SUB SHEET NO.

W H SHEllEY

DRAWN:

W H SHELlE.Y

TECH. REVIEW:

MPS

DATE:

04/2015

TITLE OF SHEET

MECHANICAL ROOM 1

ERNEST COE VISITOR CENTER

EVERGLADES NATIONAL PARK

DRAWING NO.

127,398

PMIS NO.

203625

SHEET

3 OF 5 -- --

erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Rectangle erik.venergy Line erik.venergy Rectangle erik.venergy Rectangle erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Rectangle erik.venergy Polygonal Line erik.venergy Oval erik.venergy Oval erik.venergy Line erik.venergy Line erik.venergy Rectangle erik.venergy Rectangle erik.venergy Rectangle erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Rectangle erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Cross-Out erik.venergy Typewritten Text

DE-COMMISSIONED

& MADE SAFE

erik.venergy Typewritten Text

CU-1

erik.venergy Typewritten Text

DE-COMMISSIONED &

MADE SAFE

erik.venergy Typewritten Text

EXISTING DISCONNECT RE-USED

REPLACED FUSES WITH 60A

erik.venergy Line erik.venergy Line erik.venergy Typewritten Text

RE-USED AS MAIN

DISCONNECT FOR AHU-1

erik.venergy Typewritten Text

USED EXISTING UNDERGROUND

PIPE CHASE FOR NEW

REFRIGERANT LINES

erik.venergy Line erik.venergy Typewritten Text

REMOVED SECTION OF R/A PLENUM

CONVERTED TO OPEN RETURN

erik.venergy Line erik.venergy Rectangle erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Typewritten Text

REMOVED SECTION OF R/A PLENUM

CONVERTED TO OPEN RETURN

erik.venergy Line erik.venergy Typewritten Text

REMOVED, INSTALLED

HEATER ON UNIT

erik.venergy Cross-Out erik.venergy Typewritten Text

REMOVED DUCT HEATER

INSTALLED HEATER ON UNIT

Rectangle u z u

CONDENSING UNITS 2A, 28, 3A, AND 38

SCALE: NO SCALE

CONDENSING UNIT 3A NAMEPLATE

CU UNITS 2A, 2B AND 3B IDENTICAL MODELS

SCALE: NO SCALE

CONTRACTOR HAS THE

OPTION TO REPLACE

CONDENSING UNITS 2A

AND 2B WITH NEW UNITS

OR REUSE AND MATCH

TO NEW AIR HANDLING

UNITS

AIR HANDLING UNIT 3

SCALE: NO SCALE

REPLACE AIR HANDLER 2AND

DUCT HEATER RECONNECT TO

EXISTING DUCTS AND ELECTRICAL

POWER

REFRIGERANT LINES

ALONG BUILDING REMOVE

OLD LINES

ELECTRICAL BOX FOR --

DUCT HEATER 2

208V, 3111 30A

REPLA E EXISTING ELECTRICAL

BOXES RECONNECTIONG TO THE

EXISTI WIRES AND CONDUIT. EACH

BOX H S A 208V, 3111, 40A CIRCUIT

CONTRACTOR HAS THE

OPTION TO REPLACE

CONDENSING UNITS 3A

AND 3B WITH NEW UNITS

OR REUSE AND MATCH

TO NEW . NDLING

UNITS

MECHANICAL ROOM 2 PLAN

SCALE: NO SCALE

SCALE A

2' 0 2' 4'

REMOVE EXISTING OUTSIDE AIR

DUCTS. SEAL MIXING PLENUM.

BLOCK EXISTING 34X30 OUTSIDE AIR

GRILLS WITH EXTERIOR GRADE

PLYWOOD AND lr' RIGID INSULATION

PLACED BEHIND EXISTING GRILL.

PAINT PLYWOOD TO MATCH SIDING

COLOR

.. EPLACE AIR HANDLER 3 AND

DUCT HEATER RECONNECT TO

EXISTING DUCTS AND ELECTRICAL

POWER ELECTRICAL BOX FOR

AIR HANDLER 3 208V,

3111 20A

EXISTING OUTSIDE AIR DUCTS AIR HANDLING UNIT 2

SCALE: NO SCALE SCALE: NO SCALE

DESIGNED: SUB SHEET NO.

W H SHELLEY

DRAWN:

W H SHELLEY

TECH. REVIEW:

MPS

DATE:

04/2015

TITLE OF SHEET

MECHANICAL ROOM 2

ERNEST COE VISITOR CENTER

EVERGLADES NATIONAL PARK

DRAWING NO.

127,398

PMIS NO.

203625

SHEET

_±_oF ___§__ erik.venergy Typewritten Text

CU-2A

erik.venergy Typewritten Text

CU-2B

erik.venergy Typewritten Text

CU-3

erik.venergy Rectangle erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Typewritten Text

CONDENSING UNIT

DE-COMMISSIONED

RETURNED TO NPS

erik.venergy Rectangle erik.venergy Line erik.venergy Typewritten Text

DE-COMMISSIONED

& MADE SAFE

erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygonal Line erik.venergy Polygonal Line erik.venergy Typewritten Text

DE-COMMISSIONED

& REMOVED

erik.venergy Typewritten Text

RE-USED AS UNIT

DISCONNECT

erik.venergy Typewritten Text

DECOMMISSIONED

RE-USED AS JUNCTION BOX

FOR MOTOR PROTECTION

erik.venergy Typewritten Text

RE-USED AS UNIT DISCONNECT

erik.venergy Typewritten Text

DEMO'D R/A PLENUM

TO CEILING CONVERTED

TO OPEN RETURN

erik.venergy Typewritten Text

ADDED 10" ROUND SECONDARY

RETURN TO SERVICE THEATER

erik.venergy Cross-Out erik.venergy Typewritten Text

REMOVED DUCT HEATER

INSTALLED NEW HEATER

IN UNIT

erik.venergy Typewritten Text

REMOVED DUCT HEATER

INSTALLED NEW HEATER

IN UNIT

erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Cross-Out erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line

24X24 R-1 W/22X22

NECK AIR RELIEF

EXHIBIT ROOM

SCALE A

2' D

EXHIBIT ROOM

SCALE: SCALE A

2' 4'

48X60 RELIEF

LOUVER

SEAL 48X60 RELIEF VENT

OPENING BY PLACING 1/2'"

EXTERIOR GRADE PLYWOOD WITH

2X4 FRAME AND 1~ INCH RIGID

INSULATION BEHIND LOUVERS.

PAINT PLYWOOD TO MATCH

EXISTING SIDING COLOR.

REMOVE COUNTER

BALANCE RELIEF DAMPER

REMOVE 36X48X60 PLENUM AND

BLOCK OFF OPENING TO DUCT

ABOVE WITH SHEET METAL.

INSTALL 4" -----'oc.

JET NOZZLE

POINT UP

TOWARD

CEILING PEAK

MAIN ROOM

D-3 48"-2 SLOT

140 CFM

MAIN LOBBY

SCALE: SCALE A

DESIGNED: SUB SHEET ND.

W H SHEllEY

DRAWN:

W H SHEllEY

TECH. REVIEW:

MPS

DATE:

D4/2015

TITLE OF SHEET DRAWING NO

EXHIBIT ROOM AND 160

127,398

MAIN LOBBY PMI S ND.

203625

SHEET

ERNEST COE VISITOR CENTER

EVERGLADES NATIONAL PARK 5 OF 5

erik.venergy Oval erik.venergy Typewritten Text

ACTUAL CONDITIONS

REQUIRED INSTALLATION

TO ME MOVED TO MAIN

SUPPLY AIR DUCT NEAR

ENTRANCE

erik.venergy Line erik.venergy Polygon erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Line erik.venergy Polygon erik.venergy Line

2011 Lennox Industries Inc.

Litho U.S.A.

Corp. 0701-L1

CB27UH/

Service Literature Revised September 2012 CBX27UH

CB(X)27 Series Units

IT IS HIGHLY RECOMMENDED IF THE AIR HANDLER IS INSTALLED IN A

UNCONDITIONED SPACE THAT A CIRCUIT BREAKER COVER (ORDERED

SEPARATELY) IS USED. ORDER LENNOX CATALOG # 82W01.

CIRCUIT BREAKER

OPENING

CIRCUIT BREAKER

COVER

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause personal injury, loss of life, or damage to property.

Installation and service must be performed by a licensed professional installer (or equivalent) or a service agency.

CAUTION

Physical contact with metal edges and corners while applying excessive force or rapid motion can result in personal injury. Be aware of, and use caution when working near these areas during installation or while servicing this equipment.

Table of Contents

Specifications / Electrical Data Page 2

Blower Data Page 4

Parts Arrangement Page 6

I Application Page 7

II Unit Components Page 7

III Optional Electric Heat Page 9

IV Start Up Page 27

V Typical Operating Characteristics Page 27. .

VI Maintenance Page 28

VII Wiring Diagrams and Sequence of Operations Page 31

The Elite CB27UH/CBX27UH are high efficiency blower coils. Several models are available in sizes ranging from 1‐1/2 through 5 tons (5.3 through 17.6 kW). The CB27UH is an upflow horizontal unit designed for HFC-22 refrigerant and the CBX27UH is an upflow horizontal unit designed for HCFC-410A refrigerant. See unit installation instructions for more detail. A kit is available for downflow applications.

CB(X)27 units come with a factory installed check and ex pansion valve for cooling or heat pump applications.

CB(X)27 series units are designed to be matched with the 14 SEER air conditioner and heat pump lines. While these blower coil units are designed to be primarily matched with these outdoor units, they may be matched with other air conditioners or heat pumps as noted in the rating informa tion.

ECB29 electric heat, in several voltages and kW sizes, can be field installed in the CB(X)27 cabinets.

Information contained in this manual is intended for use by experienced HVAC service technicians only. All specifica tions are subject to change. Procedures outlined in this manual are presented as a recommendation only and do not supersede or replace local or state codes.

CAUTION

Physical contact with metal edges and corners while applying excessive force or rapid motion can result in personal injury. Be aware of, and use caution when working near these areas during installation or while servicing this equipment.

SPECIFICATIONS

General Data

R-22 Model Number CB27UH‐018 CB27UH‐024 CB27UH‐030 CB27UH‐036

R-410A Model Number CBX27UH‐018 CBX27UH‐024 CBX27UH‐030 CBX27UH‐036

Nominal tonnage 1.5 2 2.5 3

Connections Suction (vapor) line (o.d.) - in. sweat 3/4 3/4 3/4 3/4

Liquid line (o.d.) - in. sweat 3/8 3/8 3/8 3/8

Condensate - in. fpt (2) 3/4 (2) 3/4 (2) 3/4 (2) 3/4

Indoor Coil

Net face area - ft.2 4.44 4.44 5.0 5.0

Tube outside diameter - in. 3/8 3/8 3/8 3/8

Number of rows 3 3 3 3

Fins per inch 12 12 12 12

Blower Wheel nominal diameter x width - in. 10 x 8 10 x 8 11 x 8 11 x 8

Blower motor output - hp 1/2 1/2 1/2 1/2

1 Filters Size of filter - in. 20 x 20 x 1 20 x 20 x 1 20 x 20 x 1 20 x 20 x 1

Shipping Data -1 package - lbs. 148 148 159 159

ELECTRICAL DATA

Voltage - 1 phase - 60hz 208/230V-1ph 208/230V-1ph 208/230V-1ph 208/230V-1ph

Voltage - 3 phase - 60hz - - - - - - - - - 3 460V-1ph

2 Maximum Overcurrent Protection (unit only) - All voltages 15 15 15 15

Minimum Circuit Ampacity (unit only) - 208/230V 5 5 5 5

Blower Motor Full Load Amps - 208/230V 4.1 4.1 4.1 4.1

Minimum Circuit Ampacity (unit only) - 460V - - - - - - - - - 2.6

Blower Motor Full Load Amps - 460V - - - - - - - - - 2.1

OPTIONAL ACCESSORIES - MUST BE ORDERED EXTRA

ComfortSense� 7000 Thermostat Y2081 Y2081 Y2081 Y2081

Remote Outdoor Temperature Sensor (for ComfortSense 7000)

X2658 X2658 X2658 X2658

Dehumidification Relay Kit 26W62 26W62 26W62 26W62

Down‐Flow Additive Floor Base 44K15 44K15 44K15 44K15

Down‐Flow Conversion Kit 83M57 83M57 83M57 83M57

Electric Heat - See Electric Heat Data tables 2.5 to 20 kW

Healthy Climate Germicidal Light

UVC-24V (24V) X9423 X9423 X9423 X9423

UVC-41W-S (110/230v-1 ph) X9424 X9424 X9424 X9424

Horizontal Support Frame Kit 56J18 56J18 56J18 56J18

Side Return Unit Stand (Up‐Flow Only) 45K32 45K32 45K32 45K32

Single Point Power Source Control Box 21H39 21H39 21H39 21H39

Wall Hanging Bracket Kit (Up-Flow Only) 45K30 45K30 45K30 45K30

1 Disposable frame type filter.

2 HACR type circuit breaker or fuse.

3 Blower motor is 460V - 1 phase. Optional electric heat is 460V - 3 phase.

SPECIFICATIONS

General Data

R-22 Model Number CB27UH‐042 CB27UH‐048 CB27UH‐060

R-410A Model Number CBX27UH‐042 CBX27UH‐048 CBX27UH‐060

Nominal tonnage 3.5 4 5

Connections Suction (vapor) line (o.d.) - in. sweat 7/8 7/8 7/8

Liquid line (o.d.) - in. sweat 3/8 3/8 3/8

Condensate - in. fpt (2) 3/4 (2) 3/4 (2) 3/4

Indoor Coil

Net face area - ft.2 7.22 7.22 8.33

Tube outside diameter - in. 3/8 3/8 3/8

Number of rows 3 3 3

Fins per inch 12 12 12

Blower Wheel nominal diameter x width - in. 12 x 9 12 x 9 12 x 9

Blower motor output - hp 1 1 1

1 Filters Size of filter - in. 20 x 24 x 1 20 x 24 x 1 20 x 24 x 1

Shipping Data -1 package lbs. 194 194 216

ELECTRICAL DATA

Voltage - 1 phase - 60hz 208/230V-1ph 208/230V- 1ph 208/230V- 1ph

Voltage - 3 phase - 60hz - - - 3 460V-1ph 3 460V-1ph

2 Maximum Overcurrent Protection (unit only) - All voltages 15 15 15

Minimum Circuit Ampacity (unit only) - 208/230V 10 10 10

Blower Motor Full Load Amps - 208/230V 7.6 7.6 7.6

Minimum Circuit Ampacity (unit only)V - 460V - - - 5 5

Blower Motor Full Load Amps - 460V - - - 4 4 1 Disposable frame type filter.

2 HACR type circuit breaker or fuse.

3 Blower motor is 460V - 1 phase. Optional electric heat is 460V - 3 phase.

REPLACEMENT CIRCUIT BREAKERS

Voltage Description Catalog No.

208/240V - 1 Phase 25 amp, 2 pole 41K13

30 amp, 2 pole 17K70

35 amp, 2 pole 72K07

40 amp, 2 pole 49K14

45 amp, 2 pole 17K71

50 amp, 2 pole 41K12

60 amp, 2 pole 17K72

208/240V - 3 Phase 30 amp, 3 pole 18M85

40 amp, 3 pole 41K16

45 amp, 3 pole 18M86

50 amp, 3 pole 41K15

60 amp, 3 pole 41K17

BLOWER DATA

CB(X)27UH‐018 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 815 80 810 77 835 86 855 89 1010 137 820 82 815 77 835 84 850 91 1010 140

.10 720 71 700 68 735 76 790 89 980 142 710 71 715 71 735 77 795 89 975 144

.20 580 59 560 58 665 76 755 99 950 153 570 59 580 60 660 77 755 99 950 154

.30 500 63 450 55 610 78 710 101 905 157 505 64 440 58 615 80 715 102 910 160

.40 400 65 350 59 580 87 685 111 870 166 415 67 355 60 89 680 112 875 170

.50 365 74 290 60 505 96 640 114 835 176 355 77 300 64 510 99 630 118 850 179

.60 315 75 280 68 445 100 580 124 800 179 320 77 270 71 450 102 575 129 805 183

.70 N/A N/A 210 71 390 102 515 128 755 187 N/A N/A 220 72 395 106 525 137 780 192

.80 N/A N/A 170 71 355 109 470 136 710 194 N/A N/A 175 76 365 112 485 144 725 200

CB(X)27UH‐024 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 885 89 885 89 930 97 1035 130 1185 184 890 91 895 90 920 99 1040 130 1190 189

.10 755 77 760 77 850 98 995 139 1140 193 785 82 770 78 855 100 1000 142 1145 200

.20 665 73 670 72 820 106 970 148 1100 203 675 76 670 76 820 111 960 152 1110 207

.30 605 77 600 77 775 112 920 154 1070 213 605 80 605 80 780 114 930 156 1085 219

.40 560 84 515 88 725 121 885 165 1025 219 570 88 555 88 745 123 890 166 1035 225

.50 445 95 445 95 675 124 835 171 1000 228 465 99 465 99 670 131 850 172 1010 235

.60 400 98 395 96 570 137 810 179 960 232 405 101 405 101 595 142 815 183 975 246

.70 N/A N/A 345 101 520 143 705 193 920 242 N/A N/A 350 106 530 151 710 197 935 248

.80 N/A N/A 320 106 460 148 625 201 835 254 N/A N/A 330 112 485 155 660 207 895 260

CB(X)27UH‐030 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 1130 128 1175 142 1230 158 1270 177 1345 208 1145 130 1180 142 1235 161 1280 179 1365 212

.10 1045 118 1065 126 1140 151 1240 183 1345 219 1030 118 1085 130 1155 154 1245 183 1345 223

.20 910 103 950 113 1105 160 1205 193 1305 231 915 105 955 116 1120 164 1205 195 1310 237

.30 730 89 870 117 1050 169 1165 202 1250 238 755 91 885 118 1060 171 1170 207 1265 242

.40 605 93 825 120 1020 176 1115 209 1205 248 655 92 830 124 1030 180 1125 213 1230 254

.50 540 101 725 136 980 181 1085 218 1180 257 550 102 745 136 985 184 1090 223 1195 265

.60 470 106 670 145 930 191 1035 224 1140 262 475 107 670 149 945 195 1050 230 1145 270

.70 N/A N/A 605 154 835 207 995 235 1105 273 N/A N/A 620 159 860 213 1005 242 1110 280

.80 N/A N/A 545 159 785 217 950 245 1055 284 N/A N/A 560 163 805 223 915 258 1050 295

CB(X)27UH‐036 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V / 460V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 1185 136 1225 149 1320 184 1430 234 1545 293 1180 139 1230 152 1330 191 1440 238 1555 299

.10 1070 125 1125 137 1280 196 1395 244 1515 303 1085 129 1125 141 1195 201 1405 251 1520 313

.20 960 113 1010 130 1240 201 1360 255 1475 314 955 114 1025 132 1260 213 1365 264 1485 325

.30 815 101 970 136 1195 214 1310 265 1430 322 805 105 975 142 1210 219 1330 275 1445 337

.40 750 106 915 148 1155 225 1275 273 1385 334 770 114 930 153 1170 231 1285 283 1405 345

.50 670 119 870 153 1110 231 1240 284 1345 345 670 128 870 159 1120 243 1250 295 1365 357

.60 605 130 825 163 1160 242 1190 290 1315 355 605 134 810 173 1080 249 1210 307 1330 367

.70 555 137 725 177 1125 251 1145 301 1270 359 565 142 725 185 1040 260 1160 313 1285 378

.80 515 142 670 282 970 262 1100 312 1225 369 525 146 675 195 980 276 1120 324 1245 391

CB(X)27UH‐042 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 1475 198 1530 218 1610 251 1705 295 1805 349 1475 200 1530 222 1615 254 1705 300 1815 350

.10 1370 183 1420 207 1545 251 1660 307 1780 364 1360 184 1435 207 1545 255 1665 310 1775 368

.20 1255 172 1305 189 1515 266 1635 322 1750 378 1245 172 1305 190 1515 269 1630 326 1750 384

.30 1090 153 1250 200 1470 278 1600 336 1705 390 1090 155 1255 203 1470 278 1605 343 1715 395

.40 1010 164 1190 210 1430 295 1560 346 1685 407 1020 165 1200 213 1420 300 1565 351 1680 408

.50 955 177 1145 225 1385 310 1510 373 1640 428 955 178 1150 229 1385 314 1520 373 1650 430

.60 885 183 1090 242 1330 319 1475 384 1590 443 915 183 1095 243 1330 324 1480 390 1595 453

.70 N/A N/A 1005 248 1255 341 1430 401 1565 457 N/A N/A 1000 254 1265 344 1440 408 1565 468

.80 N/A N/A 990 260 1200 355 1365 419 1510 473 N/A N/A 1000 255 1200 362 1375 429 1515 481

CB(X)27UH‐048 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V / 460V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 1440 200 1515 233 1670 304 1690 313 1850 413 1440 202 1525 237 1680 309 1700 319 1860 422

.10 1370 188 1455 224 1650 318 1670 329 1825 421 1370 189 1465 224 1665 324 1685 331 1840 431

.20 1260 173 1425 231 1635 327 1660 337 1825 436 1255 177 1425 235 1650 331 1675 342 1840 443

.30 1120 166 1380 242 1605 343 1630 351 1800 447 1125 167 1380 243 1625 349 1645 358 1815 461

.40 1055 172 1335 260 1565 352 1595 367 1770 462 1055 177 1335 262 1585 358 1605 373 1780 471

.50 960 190 1295 273 1530 372 1555 377 1735 479 970 194 1290 278 1535 378 1570 385 1745 490

.60 895 195 1230 285 1490 389 1510 401 1695 489 890 201 1230 296 1500 396 1525 408 1720 506

.70 N/A N/A 1145 304 1445 407 1470 418 1650 513 N/A N/A 1140 308 1455 415 1490 425 1665 533

.80 N/A N/A 1095 317 1385 416 1430 432 1605 530 N/A N/A 1075 325 1405 435 1430 445 1630 551

CB(X)27UH‐060 BLOWER PERFORMANCE

External Static Pres sure

Air Volume and Motor Watts at 208V Air Volume and Motor Watts at 230V / 460V

Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 1 Tap 2 Tap 3 Tap 4 Tap 5

in. w.g. cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts

.00 1490 207 1765 331 1970 455 2010 494 2365 799 1505 212 1775 337 1980 461 2025 497 2365 822

.10 1395 194 1740 344 1930 466 1985 507 2328 810 1400 198 1745 352 1950 475 1990 514 2345 839

.20 1320 192 1700 354 1900 480 1955 522 2300 827 1325 196 1705 361 1910 490 1965 532 2310 850

.30 1275 206 1670 367 1875 487 1915 531 2265 842 1270 211 1675 374 1890 507 1930 540 2285 863

.40 1220 214 1620 378 1825 504 1890 544 2235 850 1230 224 1635 390 1840 516 1905 556 2255 882

.50 1170 226 1575 395 1795 519 1850 555 2205 861 1185 231 1590 402 1815 532 1875 573 2225 891

.60 1135 241 1535 409 1750 529 1810 569 2175 872 1140 239 1545 419 1785 550 1825 585 2190 908

.70 N/A N/A 1490 417 1720 543 1775 585 2135 885 N/A N/A 1510 426 1735 562 1795 602 2155 922

.80 N/A N/A 1470 429 1685 557 1730 592 2085 893 N/A N/A 1480 442 1700 574 1760 619 2120 940

CB27UH & CBX27UH PARTS ARRANGEMENT

FIGURE 1

CONTROL BOX

ELECTRIC HEAT

SECTION

BLOWER

COMPARTMENT

COIL

HORIZONTAL

DRAIN PAN

EXPANSION VALVE

(COMPLETE WITH

SCREEN)

*BLOWER ACCESS

PANEL

*COIL ACCESS

PANEL

FILTER ACCESS

PANEL

FILTER

FIGURE 2

CB27UH & CBX27UH CONTROL BOX

BLOWER RELAY

(K20)

TRANSFORMER

(T1)

TERMINAL STRIP

(TB1)

I-APPLICATION

All major blower coil components must be matched accord ing to Lennox recommendations for the unit to be covered under warranty. Refer to the Engineering Handbook for ap proved system matchups. A misapplied system will cause erratic operation and can result in early unit failure. The units come with factory installed check and expansion valve for all applications. The TXV valve has been installed inter nally for a cleaner installation and is accessible if required.

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

CAUTION

Electrostatic discharge can affect electronic com ponents. Take precautions during unit installation and service to protect the unit's electronic con trols. Precautions will help to avoid control expo sure to electrostatic discharge by putting the unit, the control and the technician at the same electro static potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface before performing any service procedure.

II-UNIT COMPONENTS

A-Control Box

See figure 2 for CB(X)27UH control box. Line voltage and electric heat connections are made in the control box. Op tional electric heat fits through an opening located in the center of the control box. When electric heat is not used, knock out plates cover the opening. The electric heat con trol arrangement is detailed in the electric heat section of this manual.

B-Terminal Strip (TB1)

CB(X)27UH units are equipped with a low voltage terminal strip (TB1) located in the control box. See figure 2. The strip is used for making up all indoor thermostat wires. The out door unit low voltage wiring connections to TB1 may be spliced with wire nuts inside the CB units.

Y1 to Y2 Jumper

A factory installed jumper will be installed between “Y1 and “Y2” for single-stage stage cooling. Remove the jumper for two-stage cooling.

R to W2 Jumper

A factory installed jumper will be installed between “R“ and “W2” for single-stage heat pump applications. Remove the jumper for two-stage non heat pump application.

C-Transformer (T1)

CB(X)27UH series units use a single line voltage to 24VAC transformer mounted in the control box. The transformer supplies power to the control circuits in the indoor and out door unit. Transformers are rated at 70VA. 208/240VAC single phase transformers use two primary voltage taps as shown in figure 3.

FIGURE 3

BLUE

YELLOW

ORANGE

RED

BLACK

240 VOLTS

208 VOLTS

PRIMARY SECONDARY

208 / 240 VOLT TRANSFORMER

F1

D- Fuse (F1)

All transformers used in the CB(X)27UH series units have a fuse (F1) wired in series on the low secondary side. See fig ure 3. F1 provides secondary voltage overcurrent protec tion and is rated at 3 amps.

E-Blower Relay (K20)

CB(X)27UH units use a DPDT relay to energize the blower motor during a call for electric heat only. When the relay coil is energized on an electric heat call, a set of N.O. contacts closes to energize the blower motor on heating speed.

F-Dehumidification Relay (K183)

Relay K183 is used for dehumidification during cooling de mand. K183 decreases blower speed resulting in an in crease in the amount of moisture taken from the air. See wiring diagram on page Page 43 and operation sequence on Page 43 for more detail.

BLOWER ASSEMBLY

FIGURE 4

Motor Terminals

G-Blower Motor (B3)

IMPORTANT

Blower motor features programmed electronic braking. The integral control brakes the motor near the end of the supply air blower operation, allowing the motor to maintain a more controlled ramping shut-down. Each blower is statically and dynamically balanced as an assembly before installation in the unit.

CB(X)27UH units are equipped with an indoor blower motor that is permanent magnetic with constant torque. The mo tor has 5 signal level speed taps all referenced to the same signal common. Each tap requires 24 volts to energize.

Multiple Taps Energized It is acceptable to have more than one tap energized at once but the micro-controller (integrated in the motor) will default to the highest tap. For example tap five will have pre cedence over tap four.

Input Voltage Requirements The circuit is designed to be operated with AC voltage. To enable a tap requires 12 to 33VAC. Expected current draw will be less than 20mA.

Troubleshooting Troubleshooting the motor is an easy process. Follow steps below.

1- Shut off power to unit.

2- Remove input plug from motor. Turn power back on to unit.

3- Check for 230 volts across terminals “L” and “N” on the input plug. See figure 4. If voltage is present continue. If voltage is not present problem may be may be up stream of the motor input plug.

4- Check for 24 volts across terminals “C” and speed tap used (1, 2, 3, 4 or 5) on the input plug. See figure 4. If 24 volts is not present problem may be up stream of the motor input plug.

If correct voltage is present in steps 3 and 4 and motor is not operating properly, replace motor. The motor is not field re pairable.

H-Coil

CB(X)27UH units have dual slab coils arranged in an “A” configuration. Each coil has two or three rows of copper tubes fitted with ripple-edged aluminum fins. An expansion valve complete with screen, feeds multiple parallel circuits through the coils. The coil is designed to easily slide out of the unit cabinet.

I-Plastic Drain Pans

Both upflow/downflow and horizontal drain pans are pro vided and installed on the CB(X)27UH units. The drain pans are made from fiberglass filled plastic. The drain hole on horizontal pans are used for right‐hand discharge only, and must be plugged when the unit is configured for left‐hand discharge.

III-OPTIONAL ECB29 ELECTRIC HEAT

A-Matchups and Ratings

See Tables 1 through 4 show all approved , and

CB(X)27UH to ECB29 matchups and electrical ratings.

B-Electric Heat Components

ECB29 parts arrangement is shown in figures 5 through 9.

All electric heat sections consist of components mounted to the electric heat vestibule panel and electric heating ele ments exposed directly to the air stream. 208/230V electric heat sections may be equipped with circuit breakers. The circuit breakers are designated by CB in the model number.

The electric heat section is connected to the unit via jack J2, which plugs into plug P2 of the unit.

Electric Heat Sequencer Relays

(K32, K33, K34, K35, K116, K117) (208/230 volt only)

Relays K32, K33, K34, K35, K116 and K117 are N.O.

sequencer relays with a resistive element for a coil and a bi‐metal disk which actuates the contacts. The relays are located on the electric heat vestibule panel and are energized by a 24V heating demand (W1, W2, and W3) via jack/plug 2. When energized, the internal resist ance heats the bi‐metal disk causing the contacts to close. When the relay is de‐energized, the disk cools and the contacts open. The relays energize different stages of heat, as well as the blower. The blower is al ways first on and last off.

Primary(S15) & Secondary(S20) Temperature Limits

Both the primary (S15) and secondary (S20) limits are located on the electric heat vestibule panel and are ex posed directly to the air stream through an opening in the panel. The high temperature limits are SPST N.C.

limits with the primary limit being an auto‐reset limit and the secondary limit being a “one‐time” limit. One‐time limits need to be replaced when opened. The limits are factory set and are not adjustable.

208/230 Volt Electric Heat Sections

Each stage of the 208/230 electric heat is protected by a primary (S15) and secondary (S20) high temperature limit. Both S15 and S20 are located in the same hous ing. Each stage use the same style of limits. Both the primary and secondary limits are wired in series with a heat element. When either S15 or S20 opens, the cor responding heat element is de‐energized. All other heating elements remain energized. The primary high temperature limit opens at 150�F + 5�F (65.5�C + 2.8�C) on a temperature rise and automatically resets at 110�F + 9�F (43.3�C + 5.0�C) on a temperature fall.

The secondary high temperature limit opens at 333�F + 10�F (167.2�C + 5.6�C) on a temperature rise. If the secondary limit opens it will need to be replaced.

Circuit Breaker (CB1, CB2, and CB3)

(208/230 volt only)

Line voltage connections are made to circuit breakers CB1, CB2, and CB3 in the electric heat sections with circuit breakers (designated by CB in the model num bers) then routed to the CB unit through J/P2 . Tables 1 through 4 show the amp rating for each circuit breaker used. Single-phase electric heat uses two-pole circuit breakers; while three-phase electric heat uses three-pole circuit breakers.

Terminal Strip (TB2) 208/230 volt only)

For the electric heat sections without circuit breakers or fuses, line voltage connections are made to terminal strip TB2 then routed to the CB unit through J/P2 The terminal strip is located in the lower left corner of the electric heat vestibule panel. Single-phase electric heat uses two-pole terminal strips; while three-phase electric heat uses three- pole terminal strips.

Heating Elements (HE1 through HE6)

Heating elements are composed of helix wound bare nichrome wire exposed directly to the air stream. The elements are supported by insulators mounted to the wire frame. For single-phase applications, one element is used per stage. Each stage is energized indepen dently by the corresponding relay located on the elec tric heat vestibule panel. All three-phase heating ele ments are arranged in a three-phase delta. Once energized, heat transfer is instantaneous. High tem perature protection is provided by primary and secon dary high temperature limits.

FIGURE 5

ECB29‐2.5, ‐5, ‐5CB, -6, -6CB 208/230 SINGLE-PHASE

ELECTRIC HEAT VESTIBULE PARTS ARRANGEMENT

TERMINAL BLOCK

(TB2)

CIRCUIT BREAKER

(CB1)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE1)

ELECTRIC HEAT

VESTIBULE PAN

EL

ELECTRIC HEAT

SEQUENCER RELAY (K32)

FIGURE 6

ECB29‐8, ‐8CB, 9CB, ‐10, ‐10CB 208/230

SINGLE-PHASE

ELECTRIC HEAT VESTIBULE PARTS ARRANGEMENT

TERMINAL BLOCK

(TB2)

CIRCUIT BREAKER

(CB1)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE2)

ELECTRIC HEAT

VESTIBULE PAN

EL

ELECTRIC HEAT

SEQUENCER RELAY (K32)

ELECTRIC HEAT

ELEMENT (HE1)

ELECTRIC HEAT

SEQUENCER RELAY (K33)

FIGURE 7

ECB29‐8, ‐10 208/230 THREE-PHASE

ECB29‐12.5CB, ‐15CB 208/230 SINGLE & THREE-PHASE

ELECTRIC HEAT VESTIBULE PARTS ARRANGEMENT

TERMINAL BLOCK

(TB2)

CIRCUIT BREAKER

(CB1)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE3)

ELECTRIC HEAT

VESTIBULE PAN

EL

ELECTRIC HEAT

SEQUENCER RELAY (K32)

ELECTRIC HEAT

ELEMENT (HE2)ELECTRIC HEAT

SEQUENCER RELAY (K33)

CIRCUIT BREAKER

(CB2)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE1)

FIGURE 8

ECB29‐20CB 208/230 SINGLE-PHASE

ELECTRIC HEAT VESTIBULE PARTS

ARRANGEMENT

CIRCUIT BREAKER

(CB1)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE4)

ELECTRIC HEAT

VESTIBULE PAN

EL

ELECTRIC HEAT

SEQUENCER RELAY (K32)

ELECTRIC HEAT

ELEMENT (HE3)ELECTRIC HEAT

SEQUENCER RELAY (K33)

CIRCUIT BREAKER

(CB2)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE2)

ELECTRIC HEAT

ELEMENT (HE1)

ELECTRIC HEAT

SEQUENCER RELAY (K34)

FIGURE 9

ECB29‐20CB, ‐25CB 208/230 THREE-PHASE

ECB29‐25CB, ‐30CB 208/230 SINGLE-PHASE

ELECTRIC HEAT VESTIBULE PARTS ARRANGEMENT

CIRCUIT BREAKER

(CB1)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE4)

ELECTRIC HEAT

VESTIBULE PAN

EL

ELECTRIC HEAT

SEQUENCER RELAY (K32)

ELECTRIC HEAT

ELEMENT (HE5)

ELECTRIC HEAT

SEQUENCER RELAY (K33)

CIRCUIT BREAKER

(CB3)

PRIMARY LIMIT (S15)

& SECONDARY LIMIT (S20)

ELECTRIC HEAT

ELEMENT (HE1 & HE2)

(not shown)

ELECTRIC HEAT

ELEMENT (HE6)

ELECTRIC HEAT

SEQUENCER RELAY (K34)

CIRCUIT BREAKER

(CB2)

ELECTRIC HEAT

SEQUENCER RELAY (K35)

ELECTRIC HEAT

SEQUENCER RELAY (K116)

ELECTRIC HEAT

ELEMENT (HE3)

TABLE 1

ELECTRIC HEAT DATA - CB(X)27UH-018

Model Number No.

of

Stages

Input 2 Blower Motor Full

Load Amps

3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

Volts kW 1 Btuh

SINGLE PHASE

2.5 kW 4 lbs.

ECB29-2.5 (28K30) Termi nal Block

1 208 1.9 6,400 4.1 16 20

220 2.1 7,200 4.1 18 20

230 2.3 7,800 4.1 18 20

240 2.5 8,500 4.1 18 20

4 kW 4 lbs.

ECB29-4 (55W87)

Terminal Block

ECB29-4CB (55W88)

30A Circuit breaker

1 208 3.0 10,250 4.1 23 4 25

220 3.4 11,450 4.1 26 30

230 3.7 12,550 4.1 26 30

240 4.0 13,650 4.1 26 30

5 kW 4 lbs.

ECB29-5 (28K31)

Terminal Block

ECB29-5CB (28K32)

30A Circuit breaker

1 208 3.8 12,800 4.1 28 30

220 4.2 14,300 4.1 31 4 35

230 4.6 15,700 4.1 31 4 35

240 5.0 17,100 4.1 31 4 35

6 kW 4 lbs.

ECB29-6 (47L22)

Terminal Block

ECB29-6CB (47L23)

35A Circuit breaker

1 208 4.5 15,400 4.1 32 35

220 5.0 17,100 4.1 36 4 40

230 5.5 18,800 4.1 36 4 40

240 6.0 20,500 4.1 36 4 40

8 kW 5 lbs.

ECB29-8 (28K33)

Terminal Block

ECB29-8CB (28K34)

45A Circuit breaker

1 208 6.0 20,500 4.1 41 45

220 6.7 22,900 4.1 47 4 50

230 7.3 25,100 4.1 47 4 50

240 8.0 27,300 4.1 47 4 50

9 kW 5 lbs.

ECB29-9CB (10L11)

ECB29EH-9CB (91K67)

50A Circuit breaker

2 208 6.8 23,100 4.1 46 50

220 7.6 25,800 4.1 52 4 60

230 8.3 28,200 4.1 52 4 60

240 9.0 30,700 4.1 52 4 60

10 kW 6 lbs.

ECB29-10 (28K35)

Terminal Block

ECB29-10CB (28K36)

60A Circuit breaker

2 208 7.5 25,600 4.1 50 4 50

220 8.4 28,700 4.1 57 60

230 9.2 31,400 4.1 57 60

240 10.0 34,100 4.1 57 60

NOTE - Circuit 1 Minimum Circuit Ampacity includes the Blower Motor Full Load Amps.

1 Electric heater capacity only - does not include additional blower motor heat capacity.

2 Amps shown are for blower motor only.

3 Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F.

4 Bold text indicates that the circuit breaker on ”CB” circuit breaker models must be replaced with size noted. See Table on Page <?>.

5 HACR type circuit breaker or fuse.

TABLE 2

ELECTRIC HEAT DATA - CB(X)27UH-024

Model Number No.

of

Stages

Input 2 Blower Motor Full

Load Amps

3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

Single Point Power Source

Volts kW 1 Btuh Ckt 1 Ckt 2 Ckt 1 Ckt 2 3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

SINGLE PHASE

4 kW 4 lbs.

ECB29-4 (55W87)

Terminal Block

ECB29-4CB (55W88)

30A Circuit breaker

1 208 3.0 10,250 4.1 23 - - - 4 25 - - - - - - - - -

220 3.4 11,450 4.1 26 - - - 30 - - - - - - - - -

230 3.7 12,550 4.1 26 - - - 30 - - - - - - - - -

240 4.0 13,650 4.1 26 - - - 30 - - - - - - - - -

5 kW 4 lbs.

ECB29-5 (28K31)

Terminal Block

ECB29-5CB (28K32)

30A Circuit breaker

1 208 3.8 12,800 4.1 28 - - - 30 - - - - - - - - -

220 4.2 14,300 4.1 31 - - - 4 35 - - - - - - - - -

230 4.6 15,700 4.1 31 - - - 4 35 - - - - - - - - -

240 5.0 17,100 4.1 31 - - - 4 35 - - - - - - - - -

6 kW 4 lbs.

ECB29-6 (47L22)

Terminal Block

ECB29-6CB (47L23)

35A Circuit breaker

1 208 4.5 15,400 4.1 32 - - - 35 - - - - - - - - -

220 5.0 17,100 4.1 36 - - - 4 40 - - - - - - - - -

230 5.5 18,800 4.1 36 - - - 4 40 - - - - - - - - -

240 6.0 20,500 4.1 36 - - - 4 40 - - - - - - - - -

8 kW 5 lbs.

ECB29-8 (28K33)

Terminal Block

ECB29-8CB (28K34)

45A Circuit breaker

1 208 6.0 20,500 4.1 41 - - - 45 - - - - - - - - -

220 6.7 22,900 4.1 47 - - - 4 50 - - - - - - - - -

230 7.3 25,100 4.1 47 - - - 4 50 - - - - - - - - -

240 8.0 27,300 4.1 47 - - - 4 50 - - - - - - - - -

9 kW 5 lbs.

ECB29-9CB (10L11)

ECB29EH-9CB (91K67)

50A Circuit breaker

2 208 6.8 23,100 4.1 46 - - - 50 - - - - - - - - -

220 7.6 25,800 4.1 52 - - - 4 60 - - - - - - - - -

230 8.3 28,200 4.1 52 - - - 4 60 - - - - - - - - -

240 9.0 30,700 4.1 52 - - - 4 60 - - - - - - - - -

10 kW 6 lbs.

ECB29-10 (28K35)

Terminal Block

ECB29-10CB (28K36)

60A Circuit breaker

2 208 7.5 25,600 4.1 50 - - - 4 50 - - - - - - - - -

220 8.4 28,700 4.1 57 - - - 60 - - - - - - - - -

230 9.2 31,400 4.1 57 - - - 60 - - - - - - - - -

240 10.0 34,100 4.1 57 - - - 60 - - - - - - - - -

12.5 kW

10 lbs.

ECB29-12.5CB (28K37)

ECB29EH-12.5CB (91K68)

(1) 25A Circuit breaker & (1) 50A Circuit breaker

2 208 9.4 32,000 4.1 24 38 25 4 40 70 70

220 10.5 35,800 4.1 27 43 4 30 4 45 70 70

230 11.5 39,200 4.1 27 43 4 30 4 45 70 70

240 12.5 42,600 4.1 27 43 4 30 4 45 70 70

15 kW 12 lbs.

ECB29-15CB (28K38)

ECB29EH-15CB (91K69)

(1) 30A Circuit breaker & (1) 60A Circuit breaker

2 208 11.3 38,400 4.1 28 45 30 4 45 83 90

220 12.6 43,000 4.1 31 52 4 35 60 83 90

230 13.8 47,000 4.1 31 52 4 35 60 83 90

240 15.0 51,200 4.1 31 52 4 35 60 83 90

NOTE - Circuit 1 Minimum Circuit Ampacity includes the Blower Motor Full Load Amps.

1 Electric heater capacity only - does not include additional blower motor heat capacity.

2 Amps shown are for blower motor only.

3 Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F.

4 Bold text indicates that the circuit breaker on ”CB” circuit breaker models must be replaced with size noted. See Table on Page <?>.

TABLE 3

ELECTRIC HEAT DATA - CB(X)27UH-030

Model Number No.

of

Stages

Input 2 Blower Motor

Full Load Amps

3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

Single Point Power Source

Volts kW 1 Btuh Ckt 1 Ckt 2 Ckt 1 Ckt 2 3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

SINGLE PHASE

4 kW 4 lbs.

ECB29-4 (55W87)

Terminal Block

ECB29-4CB (55W88)

30A Circuit breaker

1 208 3.0 10,250 4.1 23 - - - 4 25 - - - - - - - - -

220 3.4 11,450 4.1 26 - - - 30 - - - - - - - - -

230 3.7 12,550 4.1 26 - - - 30 - - - - - - - - -

240 4.0 13,650 4.1 26 - - - 30 - - - - - - - - -

5 kW 4 lbs.

ECB29-5 (28K31)

Terminal Block

ECB29-5CB (28K32)

30A Circuit breaker

1 208 3.8 12,800 4.1 28 - - - 30 - - - - - - - - -

220 4.2 14,300 4.1 31 - - - 4 35 - - - - - - - - -

230 4.6 15,700 4.1 31 - - - 4 35 - - - - - - - - -

240 5.0 17,100 4.1 31 - - - 4 35 - - - - - - - - -

6 kW 4 lbs.

ECB29-6 (47L22)

Terminal Block

ECB29-6CB (47L23)

35A Circuit breaker

1 208 4.5 15,400 4.1 32 - - - 35 - - - - - - - - -

220 5.0 17,100 4.1 36 - - - 4 40 - - - - - - - - -

230 5.5 18,800 4.1 36 - - - 4 40 - - - - - - - - -

240 6.0 20,500 4.1 36 - - - 4 40 - - - - - - - - -

8 kW 5 lbs.

ECB29-8 (28K33)

Terminal Block

ECB29-8CB (28K34)

45A Circuit breaker

1 208 6.0 20,500 4.1 41 - - - 45 - - - - - - - - -

220 6.7 22,900 4.1 47 - - - 4 50 - - - - - - - - -

230 7.3 25,100 4.1 47 - - - 4 50 - - - - - - - - -

240 8.0 27,300 4.1 47 - - - 4 50 - - - - - - - - -

9 kW 5 lbs.

ECB29-9CB (10L11)

50A Circuit breaker

ECB29EH-9CB (91K67)

50A Circuit breaker

2 208 6.8 25,600 4.1 46 - - - 50 - - - - - - - - -

220 7.6 28,700 4.1 52 - - - 4 60 - - - - - - - - -

230 8.3 31,400 4.1 52 - - - 4 60 - - - - - - - - -

240 9.0 34,100 4.1 52 - - - 4 60 - - - - - - - - -

10 kW 6 lbs.

ECB29-10 (28K35)

Terminal Block

ECB29-10CB (28K36)

60A Circuit breaker

2 208 7.5 25,600 4.1 50 - - - 4 50 - - - - - - - - -

220 8.4 28,700 4.1 57 - - - 60 - - - - - - - - -

230 9.2 31,400 4.1 57 - - - 60 - - - - - - - - -

240 10.0 34,100 4.1 57 - - - 60 - - - - - - - - -

12.5 kW 10 lbs.

ECB29-12.5CB (28K37)

ECB29EH-12.5CB (91K68)

(1) 25A Circuit breaker & (1) 50A Circuit breaker

2 208 9.4 32,000 4.1 24 38 25 4 40 70 70

220 10.5 35,800 4.1 27 43 4 30 4 45 70 70

230 11.5 39,200 4.1 27 43 4 30 4 45 70 70

240 12.5 42,600 4.1 27 43 4 30 4 45 70 70

15 kW 12 lbs.

ECB29-15CB (28K38)

ECB29EH-15CB (91K69)

(1) 30A Circuit breaker & (1) 60A Circuit Breaker

2 208 11.3 38,400 4.1 28 45 30 4 45 83 90

220 12.6 43,000 4.1 31 52 4 35 60 83 90

230 13.8 47,000 4.1 31 52 4 35 60 83 90

240 15.0 51,200 4.1 31 52 4 35 60 83 90

THREE PHASE

8 kW 5 lbs.

ECB29-8 (28K42)

Terminal Block

1 208 6.0 20,500 4.1 26 - - - 30 - - - - - - - - -

220 6.7 22,900 4.1 29 - - - 30 - - - - - - - - -

230 7.3 25,100 4.1 29 - - - 30 - - - - - - - - -

240 8.0 27,300 4.1 29 - - - 30 - - - - - - - - -

10 kW 6 lbs.

ECB29-10 (28K43)

Terminal Block

1 208 7.5 25,600 4.1 31 - - - 35 - - - - - - - - -

220 8.4 28,700 4.1 35 - - - 35 - - - - - - - - -

230 9.2 31,400 4.1 35 - - - 35 - - - - - - - - -

240 10.0 34,100 4.1 35 - - - 35 - - - - - - - - -

15 kW 12 lbs.

ECB29-15CB (28K44)

(1) 50A Circuit breaker

1 208 11.3 38,400 4.1 44 - - - 45 - - - - - - - - -

220 12.6 43,000 4.1 50 - - - 50 - - - - - - - - -

230 13.5 47,000 4.1 50 - - - 50 - - - - - - - - -

240 15.0 51,200 4.1 50 - - - 50 - - - - - - - - -

NOTE - Circuit 1 Minimum Circuit Ampacity includes the Blower Motor Full Load Amps.

1 Electric heater capacity only - does not include additional blower motor heat capacity.

2 Amps shown are for blower motor only.

3 Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F.

4 Bold text indicates that the circuit breaker on ”CB” circuit breaker models must be replaced with size noted. See Table on Page <?>.

TABLE 4

ELECTRIC HEAT DATA - CB(X)27UH-042

SINGLE PHASE

Model Number No.

of

Stages

Volts Input kW Input

1 Btuh Input

2 Blower Motor Full

Load Amps

3 Minimum Circuit

Ampacity

5 Maximum Overcurrent Protection

Single Point Power Source

Ckt

Ckt

Ckt

Ckt

Ckt

Ckt

3 Mini mum

Circuit Ampacity

5 Maximum Overcurrent Protection

4 kW 4 lbs.

ECB29-4 (55W87)

Terminal Block

ECB29-4CB (55W88)

30A Circuit breaker

1 208 3.0 10,25

7.6 28 - - - - - - 30 - - - - - - - - - - - -

220 3.4 11,45

7.6 30 - - - - - - 30 - - - - - - - - - - - -

230 3.7 12,55

7.6 30 - - - - - - 30 - - - - - - - - - - - -

240 4.0 13,65

7.6 30 - - - - - - 30 - - - - - - - - - - - -

5 kW 4 lbs.

ECB29-5 (28K31)

Terminal Block

ECB29-5CB (28K32)

30A Circuit breaker

1 208 3.8 12,80

7.6 32 - - - - - - 4 35 - - - - - - - - - - - -

220 4.2 14,30

7.6 36 - - - - - - 4 40 - - - - - - - - - - - -

230 4.6 15,70

7.6 36 - - - - - - 4 40 - - - - - - - - - - - -

240 5.0 17,10

7.6 36 - - - - - - 4 40…

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