Chromalox HD3D Handbuch

Installation, Operation and

Maintenance Instructions

HD3D

Forced-Air Heater

Corrosion Resistant/Hose Down

PF200-8

161-305521-001

January 2015

Table of Contents

Section Page

1. Warnings .............................................................................................................................. 3

2. Optional Equipment ............................................................................................................. 4

3. Package Contents................................................................................................................ 4

4. Mounting Instructions .......................................................................................................... 5

5. Standard “L” Bracket Installation......................................................................................... 6

6. Wiring ................................................................................................................................... 7

7. Operation.............................................................................................................................. 9

8. Maintenance....................................................................................................................... 10

Failure to understand and follow these instructions and

the “WARNING” notes therein may result in serious

personal injury from electrical shock, or from the heater

falling due to faulty installation.

This heater is not intended for use in hazardous

atmospheres where ﬂammable vapors, gases,

liquids or other combustible atmospheres are

present as deﬁned in the National Electrical

Code. Failure to comply can result in explo-

sion or ﬁre. For these applications see Product

Data Sheet PDS CXH-EP (PF305).

ELECTRIC SHOCK HAZARD. Disconnect all

power before installing or servicing heater.

Failure to do so could result in personal injury

or property damage. Heater must be installed

by a qualiﬁed person in accordance with the

National Electrical Code, NFPA 70.

ELECTRIC SHOCK HAZARD. Any installation

involving electric heaters must be performed

by a qualiﬁed person and must be effective-

ly grounded in accordance with the National

Electrical Code to eliminate shock hazard.

Do not mount mercury type thermostat directly on unit.

Vibration could cause heater to malfunction.

Fan blade rotation must be checked. If airﬂow is not

moving out through the louvers, interchange any two of

the three customer power leads on three-phase units

only.

FIRE HAZARD. To prevent personal injury or

property damage, do not operate heater near

combustible objects, restrict aiﬂow or use for

purposes other than described.

Chromalox does not guarantee its products against

corrosion. To ensure proper operation and service life,

contact your local Chromalox sales ofﬁce for applica-

tion assistance.

Warnings

General Information

HD3D Hose Down Heater

Code

Heating

Element

Rating (kW) Code

Heating

Element

Rating (kW)

200 2.0 1500 15.0

300 3.0 2000 20.0

500 5.0 2500 25.0

750 7.5 3000 30.0

1000 10.0 3500 35.0

1250 12.5 4000 39.0

Code Option

LLow-Voltage 24V Control

PS Epoxy Painted Case

TThermostat

SSummer Fan Switch

P“On” Pilot Light

DDisconnect Switch

Manual Reset Overtemperature

Cutout

EMonel Elements

HD3D -2000 LPSTSPDME Typical Model Number

Dimensions in Inches (cm)

kW A B C

2.5 - 7.5 13-1/2 (34) 24-1/2 (62) 15 (38)

10 - 20 17-1/4 (44) 28 (71) 15-1/8 (38)

25 - 39 21-1/4 (54) 32-1/4 (82) 19-1/2 (50)

Dimensions

Optional Equipment

•Universal Swivel Bracket - Field installed (See

PF926 for installation instructions)

•Drip Shield - Field installed (See PF927 for installa-

tion instructions)

•Built-in Thermostat - Factory installed (bulb and

capillary type) for automatic temperature control.

The thermostat controls the heating elements and

fan simultaneously to achieve set temperature.

The Lo setting of the thermostat is approximately

40˚F (4˚C) and the Hi setting is approximately 100˚F

(38˚C).

•Heat-Cool Switch - Factory installed (heater on,

heater off, fan only) to permit air ﬂow with or without

energizing the heating elements. The switch is ac-

cessible from outside the NEMA 4X enclosure.

•“On” Pilot Light - Factory installed to indicate when

power is on.

•Internal Fusing - Factory installed

• ManualResetCutout - Factory installed

• Disconnect Switch - Field/Factory installed See

document PF928 for installation instructions

• Forwiringdiagramcontainingoptions,seelabel

on inside cover of terminal box

Package Contents

A. B.

Item Quantity Description

A 1 HD3D Unit Heater1

B 3 Standard Mountng Bracket

1 Aside from mounting brackets, unit heaters with factory installed

accessories are shipped fully assembled.

Mounting Instructions

Heater Location Instructions:

Arrange units so their discharge air streams:

A. Are subjected to minimum interference from col-

umns, machinery and partitions.

B. Wipe exposed walls without blowing directly at

them.

C. Are directed away from room occupants in comfort

heating.

D. Are directed along the windward side when installed

in a building exposed to a prevailing wind.

Locate thermostat on interior partition walls or posts

away from cold drafts, internal heat sources and away

from heater discharge air streams.

Small rooms can be heated by one unit heater. Where

two walls are exposed, the heater should be mounted

as shown in Figure A.

Large rooms require multi-unit installations. Number

and capacity of units will be determined by volume of

building and square feet of ﬂoor area to be heated. Ar-

range units to provide perimeter air circulation where

each unit supports the air stream from another.

EXPOSED

Figure A

Minimum Clearances

A. The heater must be mounted at least 7’ above the

ﬂoor to avoid accidental contact with the heating

elements or fan blade which could cause injury.

B. Keep at least 5’ clearance in front of the heater. Re-

fer to ﬁgures 1 and 2 for side, top and back clear-

ance requirements.

C. The ceiling mounting structure and the anchoring

provisions must be of sufﬁcient strength to support

the combined weight of the heater and mounting

bracket.

D. The wall or mounting surface, and the anchoring

provisions must be capable of supporting the com-

bined weight of the heater and the mounting brack-

ets cantilevered from the mounting surface.

Wall

Ceiling

Floor

Wall

Ceiling

10' (305 cm)

Min.

Floor

18"

(46 cm)

Min.

9" (23 cm)

Min.

12"

(30 cm)

Min.

7’ (214 cm)

Min.

Figure 1: Horizontal Mounting

Wall

Ceiling

Floor

Wall

Ceiling

10' (305 cm)

Min.

Floor

18"

(46 cm)

Min.

9" (23 cm)

Min.

12"

(30 cm)

Min.

7’ (214 cm)

Min.

Figure 2: Vertical Mounting

Standard “L” Bracket Installation

1. While securing bottom set of lock nuts, completely

remove top set.

2. Install “L” bracket so that the slot is oriented toward

the back (inlet) of the heater and secure using top

set of lock nuts. To aviod damaging case, secure

bottom set of lock nuts while tightening.

3. Repeat steps 1 and 2 to install remaining two L

Brackets.

Notes:

• Recommended bolt and threaded rod sizes for in-

stallation (to be supplied by installer) are located in

ﬁgure 3.

• Figure 4 shows typical installation dimensions

meeting minimum requirements.

Standard Non-Swivel Brackets

A Typ

120˚120˚

Figure 3

Dimensions

A Radius

Inches (cm) Bolt Size Inches (mm)

2 - 7.5 7-3/4 (20) 3/8 to 7/16 (10 to 11)

10 - 20 9-1/2 (24) 3/8 to 7/16 (10 to 11)

25 - 39 11-1/2 (29) 3/8 to 7/16 (10 to 11)

Wall

Ceiling

Floor

Wall

Ceiling

Floor

Figure 4

Dimensions in Inches (cm)

kW A B C D

2.5 - 7.5 33-1/2 (85) 16-1/2 (42) 25-1/2 (65) 33 (84)

10 - 20 37 (94) 16-5/8 (42) 29-1/4 (78) 33-1/8 (84)

25 - 39 41-1/4 (105) 21 (53) 33-1/4 (84) 37-1/2 (80)

Note: All electrical wiring must be done according to

National Electrical and local codes by a qualiﬁed per-

son.

ELECTRIC SHOCK HAZARD. Any installation

involving electric heaters must be performed

by a qualiﬁed person and must be effective-

ly grounded in accordance with the National

Electrical Code to eliminate shock hazard.

The system designer is responsible for the

safety of this equipment and should install ad-

equate back-up controls and safety devices

with their electric heating equipment. Where

the consequences of failure could result in per-

sonal injury or property damage, back-up con-

trols are essential.

1. Check all factory wiring for loose connections. It is

possible for connections to become loose during

shipping.

2. Connect heater according to the voltage and fre-

quency speciﬁed on the nameplate.

3. Heaters are not provided with a control switch and

may be controlled by a wall-mounted thermostat.

4. All units are provided with control and power termi-

nal blocks for customer’s connection.

5. Protection against overheating is provided by an

internal automatic thermal cutout (manual reset

cutout optional) which opens the electric circuit if

the normal air-ﬂow is restricted or stopped. Cutout

automatically energizes heater on removal of the

obstruction. If optional manual reset is tripped, de-

termine cause before re-energizing.

6. Heaters rated 5kW - 39kW are equipped with fan

delay control.

This control continues fan operation for a short time

after elements are de-energized to dissipate residu-

al heat.

7. Follow wiring diagram label located on door inside

control panel.

Wiring Instructions

Control Panel Layout

Letter Description

A Thermostat

B Power Contactor

C Fan Relay

D Terminal Block

E Motor Contactor

F Grounding Lug

G Conduit Opening

H Fan Only Switch

I Pilot Light

J Transformer (Hidden)

The Transformer (J) is located below

the motor contactor (E), therefore it is

not seen in photo.

Wiring Diagrams

THR

LKHEA

FITTIN

120V 1 PHA

TERMINAL

OCK

HEATER

THRU

LKHEA

LOCATED IN HEATER

REMOVE JUMPER WHEN THERMOSTAT IS USED BUILT IN OR WALL

MOUNTED THERMOSTAT

TERMINAL

BLOCK

(CONTROL)

L1L1 L1

C1 C2

MATI

VERHEA

OUT

HD3D-200 & HD3D 300 120V 1Ø

REMOVE JUMPER

WHEN THERMOSTAT

IS USED

(CONTROL)

TERMINAL BLOCK

SEC

PRIMARY

TRANSFORMER 40VA

POWER

CONTACTOR

X1 X2

H1 H2

T1 T2

AR CUTOUT

T2T1 T2T1

1PH ELEMENT WIRING

L1 L2

BLK

BRN

BLK

FOR VOLTAGE

SEE HEATER

RED

IN HEATER

BUILT IN OR REMOTE THERMOSTAT

REFER TO NAMEPLATE FOR

XFMR PRIMARY (INPUT) AND

SECONDARY (CONTROL) VOLTAGE.

HD3D-200 and HD3D 280-277V 1Ø

REMOVE JUMPER WHEN

THERMOSTAT IS USED

OMIT FOR 1Ø

IN HEATER

CONTACTOR

TIME DELAY

(CONTROL)

TERMINAL BLOCK

SEC

PRIMARY

40VA

TRANSFORMER

POWER

CONTACTOR

MOTOR

X1 X2

H1 H2

RELAY

NO C

REFER TO NAMEPLATE FOR XFMR PRIMARY

(INPUT) AND SECONDARY (CONTROL)

VOLTAGE.

AR CUTOUT

BUILT IN OR REMOTE

THERMOSTAT

FOR VOLTAGE AND PHASE

SEE HEATER NAMEPLATE

1PH ELEMENT WIRING

3PH ELEMENT WIRING

PINK

BROWN

BLK BRN

YELLOW

WHITE

BLUE

BLK

BLACK

T1 T2

T1 T3 T2

L1 L2 L3

T2 T3

2T1 4T2 6T3 A2

1L1 3L2 5L3

2T 6T

4T T1 T1

T1 T2 T2

RED

ORANGE

HD3D-500 thru HD3D 4000

XFMR Color Code Tabulation

Pri. Volt. Pri. XFMR Lead Clrs. 120V Sec. Lead Clrs. 24V Sec.

Lead

Clrs. 230V Sec. Lead Clrs.

H1 H2 X1 X2 X1 X2 X1 X2

208 BLK RED BLK WHT YEL BLU - -

240 BLK ORG BLK WHT YEL BLU - -

277 BLK BRN BLK WHT YEL BLU - -

480 BLK

BLK/RED

BLK WHT YEL BLU - -

575 BLK GRY BLK WHT YEL BLU - -

690 BLK GRY - - - - BLK WHT

IN HEATER

PURPLE

GRN/YEL

OMIT FOR 1Ø

PINK

T1 T1 T2 T3 T3 T2 T1 T1 T1 T2 T2 T2

BLK/WHITE

CONTACTOR

OFF

FAN

ONLY HEAT

TIME DELAY

SEC

PRIMARY

40VA

TRANSFORMER

POWER

CONTACTOR

MOTOR

X1 X2

H1 H2

RELAY

NO C

REFER TO NAMEPLATE FOR

XFMR PRIMARY (INPUT)

AND SECONDARY

(CONTROL) VOLTAGE.

AR CUTOUT

FOR VOLTAGE AND PHASE

SEE HEATER NAMEPLATE

1PH ELEMENT WIRING

3PH ELEMENT WIRING M

4T2

6T3

GREEN

WHITE

ORANGE

RED

BLACK

LIGHT BLUE

BRN

YELLOW

T1 T2 T3

L1 L2 L3

BUILT IN

THERMOSTAT

CONTROL TERMINAL

BLOCK

2T1 4T1 6T3 A1

1L1 3L2 5L3

XFMR Color Code Tabulation

Pri. Volt. Pri. XFMR Lead Clrs. 120V Sec. Lead Clrs. 24V Sec.

Lead

Clrs.

H1 H2 X1 X2 X1 X2

208 BLK RED BLK WHT YEL BLU

240 BLK ORG BLK WHT YEL BLU

277 BLK BRN BLK WHT YEL BLU

480 BLK

BLK/RED

BLK WHT YEL BLU

575 BLK GRY BLK WHT YEL BLU

HD3D-500TSP thru HD3DTSP-4000

Operation

With proper installation this heater will provide efﬁcient

and dependable service. Please read the following

guidelines to ensure reliable operation.

1. Do not allow objects such as fabric or other com-

bustible materials to restrict the airﬂow through the

heater.

2. Heater should not be operated unattended unless

adequate controls and safety devices have been in-

stalled.

3. The ambient operating temperature limits are -20˚F

to 104˚F (-29˚C to 40˚C).

4. Thermostat1: Unit mounted thermostats are non-

indicating. The thermostat dial can be rotated 270˚,

with a low setting of 40˚F (4˚C) when turned fully in

the counter clockwise direction and 100˚F (38˚C)

when fully turned in the clockwise direction. The dial

is equipped with a position indicator for ﬁner adjust-

ments. The setting of 0 represents 40˚F (4˚C) and 8

Represents 100˚F (38˚C).

5. Disconnect: To disconnect the heater, turn lever in

the clockwise direction until you hear a click.

1It is recommended that a remote thermostat be used when ceiling height

exceeds 20 feet.

Maintenance

Turn off power to service heater. Do not at-

tempt to service or clean heater while unit is

operating as there is hazard of electric shock,

injury from operating fan, and burns from hot

heating elements.

ELECTRIC SHOCK HAZARD. Disconnect all

power before installing or servicing heater.

Failure to do so could result in personal injury

or property damage.

In order to optimize heater operating life and prevent

unexpected down time, preventative maintenance

should be preformed at least once per year, preferably

before start of heating season.

1. Turn off heater and allow to cool before performing

these maintenance procedures.

2. Fan motors in these heaters are provided with

sealed ball bearings, factory lubricated, requiring no

further lubrication under normal service conditions.

3. Vacuum or hose off heater with water (at city pres-

sure) before activating for next heating season to

remove accumulated dust or lint which otherwise

may smoke or incinerate on initial heat up.

4. Check internal and external wiring connections to

ensure they have not become loose.

5. Check motor hardware, including fan hub set screw

to ensure nothing has become loose. Do not over-

tighten. Torque value on set screw should be 35 in-

lbs. (3.95 N.m)

Note: Do not use high pressure cleaning systems.

Renewal Parts Identiﬁcation

DETAIL OF UNIVERSAL

MOUNTING BRACKET

ELEMENT CONFIGURATION

FOR 25 THRU 39 KW HEATERS ELEMENT CONFIGURATION

FOR 15 THRU 20 KW

HEATERS

ELEMENT

CONFIGURATION

FOR 2 THRU 12.5 KW

HEATERS

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