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Risk of fire. Do not use as a residential or household 

heater.

Hazard of Fire or Discoloration of Temperature Sen-

sitive Fabrics. Do not use as a residential or house-

hold heater. Keep combustible material and such 

fabrics away from heater. Do not operate heater 

where flammable vapors, gases or liquids are pres-

ent. Heaters in the heat mode should not be oper-

ated in room temperatures above 130°F. Fan motor 

is not designed to operate in ambients below -10°F.

To avoid personal injury read “IMPORTANT INSTRUC-

TIONS” on page 2 before installation or operation of 

heater.

Keep electrical cords and combustible materials, 

such as drapes and other furnishings, away from 

heater.

Table 1 - Specifications

Model

Electrical Data (60 Hz)

Dimensions (In.)

Volts

kW

Phase

Amps* 1/3 PH

BTU

Height

Width

Depth

SDRA-30-43

480

30

3

37.2

102,360

38.5

26

44

SDRA-30-93

600

30

3

30.0

102,360

38.5

26

44

SDRA-48-43

480

48

3

58.9

163,776

38.5

30-1/4

44

SDRA-48-93

600

48

3

47.3

163,776

38.5

30-1/4

44

SDRA-60-43

480

60

3

73.3

204,720

38.5

30-1/4

44

SDRA-60-93

600

60

3

58.9

204,720

38.5

30-1/4

44

IMPORTANT: SAVE THESE INSTRUCTIONS

IMPORTANT INSTRUCTIONS

When using electrical appliances, basic precautions should 

always be followed to reduce the risk of fire, electric shock 

and injury to persons, including the following:
1.  Read all instructions before using this heater.
2.  This heater is hot when in use. To avoid burns, do not let 

bare skin touch hot surfaces. If provided, use handles 

when moving this heater. Keep combustible materials, 

such as furniture, pillows, bedding, papers, clothes, and 

curtains at least 3 feet (0.9m) from the front of the heater 

and keep them away from the sides and rear.

3.  Extreme caution is necessary when any heater is used by 

or near children or handicapped individuals and when-

ever the heater is left operating and unattended.

4.  Always disconnect heater when not in use.
5.  Do not operate any heater with a damaged cable or plug 

or after the heater malfunctions, has been dropped or 

damaged in any manner. Return heater to authorized 

service facility for examination, electrical or mechanical 

adjustments, or repair.

6.  Do not use outdoors.
7.  This heater is not intended for use in bathrooms, laundry 

areas and similar indoor locations. Never locate heater 

where it may fall into a bathtub or other water container.

8.  Do not run cord under carpeting. Do not cover cord with 

throw rugs, runners or the like. Arrange cord away from 

traffic area and where it will not be tripped over.

9.  To disconnect heater, turn thermostat off, then remove 

plug from outlet.

10. Connect to properly grounded outlets only.
11. Do not insert or allow foreign objects to enter any venti-

lation or exhaust opening as this may cause an electric 

shock, fire or damage the heater.

12. To prevent a possible fire, do not block air intakes or ex-

haust in any manner. Do not use on soft surfaces, like a 

bed, where opening may become blocked.

13. A heater has hot and arcing or sparking parts inside.Do 

not use it in areas where gasoline, paint, flammable liq-

uids are used or stored.

14. Use this heater only as described in this manual. Any 

other use not recommended by the manufacturer may 

cause fire, electric shock or injury to persons.

15. This heater is not intended for use with an extension 

cord.

16.

 

SAVE THESE INSTRUCTIONS

.

Содержание SDRA-30-43

Страница 1: ...1 PF499 4 161 304812 003 March 2019 Installation and Operation Instructions SDRA SDRA RG Portable Industrial Unit Blower Air Heater ...

Страница 2: ...ding papers clothes and curtains at least 3 feet 0 9m from the front of the heater and keep them away from the sides and rear 3 Extreme caution is necessary when any heater is used by or near children or handicapped individuals and when ever the heater is left operating and unattended 4 Always disconnect heater when not in use 5 Do not operate any heater with a damaged cable or plug or after the h...

Страница 3: ...eet of duct length for each 180 bend Table A kW Fan RPM CFM T No Load Max Static Load T at Max Static Load 30 1800 2200 42 F 38 H2 O 86 F 48 1800 2200 68 F 38 H2 O 144 F 60 1800 2200 88 F 38 H2 O 170 F Wiring 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 effectively grounded in acc...

Страница 4: ...in feet of 20 duct Friction Loss AD 16 Damper 10 60 40 20 0 2000 1600 1400 1800 2200 2400 Fan RPM Equivalent Duct Length FT 30 50 70 80 90 Damper Full Closed Damper Full Open The SDRA Dragon includes 2 thermostats The thermostat on the air inlet end of the unit is for the minimum air temperature desired The thermostat on the discharge end of the heater is for the maximum air temperature desired Th...

Страница 5: ... wrench and a medium size phillips screwdriver 2 Remove the lower belt cover by removing the 5 sheet metal screws 3 Remove the rear grille by removing the 4 1 4 bolts and nuts 4 Remove the belt cover inside the blower by removing the 4 sheet metal screws 5 Loosen the 4 bolts 2 on each side See Fig 1 3 8 Bolts Figure 1 6 Loosen the 2 motor tension lock nuts and the fan belt tension adjusting bolts ...

Страница 6: ... threaded half of the pulley The pulley is now in position for adjustment See Table 1 for the number of turns out Tip Leave allen wrench in set screw and use free hand to fold fan blade Table B Fan RPM No of turns from full closed Fan RPM No of turns from full closed Motor Pulley Fan Pulley Motor Pulley Fan Pulley 1500 3 1 1 2 1950 1 1 2 3 1600 2 1 2 1 1 2 2000 1 1 2 3 1 2 1650 2 1 1 2 2100 1 1 2 ...

Страница 7: ...Wires through 1 4 Conduit One end attached to screw in terminal box and other end attached to screw on sub panel Motor Relay Control Enclosure 50 Amp Fusing 50 Amp Fusing L1 L3 L2 Wht Transformer Contactor Contactor Blk Toggle Switch Amber Pilot Light Green Pilot Light Run these Wires Through 1 2 Conduit Motor P4 P5 P6 Inlet Thermostat Outlet Thermostat Cutout 14 1 17 15 13 12 Heater Terminal Box ...

Страница 8: ...ent and Routing of Thermostat Capillary and Mounting of Bulb VIEW SHOWING ELEMENT PLACEMENT AND ROUTING OF THERMOSTAT CAPILLARY AND MOUNTING OF BULB 19 12 11 11 11 12 12 12 11 11 11 12 12 Front of Heater View Showing Element Placement and Routing of Thermostat Capillary and Mounting of Bulb Front View Shown with Grille Removed All Sizes 30 1 4 Twist Wire 20 1 2 38 37 44 38 1 2 16 84 36 45 80 81 20...

Страница 9: ... 047468 004 SDRA 60 43 480 60 3 118 304793 011 6 118 304793 013 6 193 121843 232 072 304551 008 2 315 303786 001 129 025643 001 2 128 026510 006 6 303 047468 004 SDRA 60 93 600 60 3 118 304793 012 6 118 304793 014 6 193 121843 233 072 304551 008 2 315 304252 003 129 025643 001 2 128 026510 006 6 303 047468 004 Wired directly to contactor All units contain two sets of elements The ratings of the el...

Страница 10: ...e Chromalox limited warranty applicable to this product at http www chromalox com customer service policies termsofsale aspx 2016 Chromalox Inc All rights reserved Chromalox 103 Gamma Drive Pittsburgh PA 15238 412 967 3800 www chromalox com ...

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