Carrier 48DL Installation Manual Page 36
- Page / 84
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
264975-BIM-B-1208
36 Johnson Controls Unitary Products
PHASING
DL/DU units are properly phased at the factory. Check for
proper compressor rotation. If the blower or compressors
rotate in the wrong direction at start-up, the electrical connec-
tion to the unit is misphased. Change the phasing of the Field
Line Connection at the factory or field supplied discon-
nect to obtain proper rotation. (Scroll compressors operate in
only one direction. If the scroll is drawing low amperage, has
similar suction and discharge pressures, or producing a high
noise level, the scroll is misphased.)
BLOWER ROTATION
Check for proper supply air blower rotation. If the blower is
rotating backwards, the line voltage at the unit point of power
connection is misphased (See ‘PHASING’).
BELT TENSION
The tension on the belt should be adjusted as shown in Fig-
ure 25.
Scroll compressors require proper rotation to oper-
ate correctly. Units are properly phased at the fac-
tory. Do not change the internal wiring to make the
blower condenser fans, or compressor rotate cor-
rectly.
TABLE 34: SUPPLY AIR LIMITATIONS
Unit Size Minimum Maximum
-06
1950 3250
-07
2250 3750
-08
2550 4250
-10
3000 5000
-12
3750 6250
FIGURE 25 - BELT ADJUSTMENT
Procedure for adjusting belt tension:
1. Loosen six nuts (top and bottom) A.
2. Adjust by turning (B).
3. Never loosen nuts (C).
4. Use belt tension checker to apply a perpendicular
force to one belt at the midpoint of the span as
shown. Deflection distance of 4mm (5/32”) is
obtained.
To determine the deflection distance from normal
position, use a straight edge from sheave to sheave
as reference line. The recommended deflection
force is as follows:
Tension new belts at the max. deflection force rec-
ommended for the belt section. Check the belt ten-
sion at least two times during the first 24 hours of
operation. Any retensioning should fall between the
min. and max. deflection force values.
5. After adjusting retighten nuts (A).
A
A
A
B
SPAN LENGTH
DEFL. FORCE
C*
* NEVER LOOSEN
- INSTALLATION 1
- TABLE OF CONTENTS 2
- LIST OF FIGURES 3
- LIST OF TABLES 3
- LIST OF TABLES (CONT’D) 4
- SAFETY CONSIDERATIONS 5
- INSPECTION 5
- REFERENCE 6
- RENEWAL PARTS 6
- APPROVALS 6
- NOMENCLATURE 7
- LIMITATIONS 9
- LOCATION 10
- RIGGING AND HANDLING 11
- FIGURE 5 - UNIT 4 POINT LOAD 11
- TABLE 3: UNIT WEIGHTS 11
- TABLE 4: 4 POINT LOAD WEIGHT 11
- CLEARANCES 12
- TABLE 5: 6 POINT LOAD WEIGHT 12
- FIGURE 6 - UNIT 6 POINT LOAD 12
- See Detail 13
- CABINET SIZE 14
- DIMENSION 14
- “A” “B” “C” 14
- 50 3/4” 28 1/4 18 1/16 28 1/4 14
- 42” 27 3/4 12 1/16 27 1/2 14
- DUCTWORK 15
- DUCT COVERS 15
- O P T I O N A L C O I L 16
- G U A R D 16
- 3 " M i n i m u m 16
- THERMOSTAT WIRING 17
- POWER AND CONTROL WIRING 17
- POWER WIRING DETAIL 17
- TABLE 8: CONTROL WIRE SIZES 17
- U N I T C O N T R O L 18
- B O A R D 18
- 264975-BIM-B-1208 19
- TABLE 29: DL PHYSICAL DATA 30
- TABLE 30: DU PHYSICAL DATA 30
- O P T I O N A L 31
- S H O W N 31
- OPTIONS/ACCESSORIES 33
- FIRE OR EXPLOSION HAZARD 33
- ADJUSTMENTS AND INFORMATION 34
- BLOWER ROTATION 36
- BELT TENSION 36
- FIGURE 25 - BELT ADJUSTMENT 36
- AIR BALANCE 56
- CHECKING AIR QUANTITY 57
- SUPPLY AIR DRIVE ADJUSTMENT 59
- OPERATION 61
- SAFETY CONTROLS 62
- COMPRESSOR PROTECTION 63
- 50” CABINET 63
- START-UP (COOLING) 66
- START-UP (GAS HEAT) 67
- CHECKING GAS INPUT 68
- TABLE 69: GAS HEAT STAGES 68
- CHARGING THE UNIT 70
- TROUBLESHOOTING 74
- OPTION BYTE SETUP 75
- HEAT DELAY SETUP 75
- TABLE 81: HEAT DELAY 76
- Power to 77
- COOLING TROUBLESHOOTING GUIDE 79
- 5005 York Drive 84
- Norman, OK 73069 84
Related products and manuals for Heat pumps Carrier 48DL
Heat pumps Carrier 50HCQA Installation Manual
(104 pages)
(104 pages)
Heat pumps Carrier 50TCQA Instruction Manual
(48 pages)
(48 pages)
Heat pumps Carrier 48HX User Manual
(28 pages)
(28 pages)
(116 pages)
Heat pumps Carrier GT-S User Manual
(10 pages)
(10 pages)
Heat pumps Carrier 30HX PRO Specifications
(43 pages)
(43 pages)
Heat pumps Carrier 25VNA Instruction Manual
(18 pages)
(18 pages)
Heat pumps Carrier 48XT-A User Manual
(120 pages)
(120 pages)
© 2020, manymanuals.com. All rights reserved. | 1.036 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals