/ Marley MD CoolingTower /
Engineering Data & Specifications
Marley / MD CoolingTower / Table of Contents
Engineering Data
Schematic |
6 |
Support |
22 |
Outlet Connection |
24 |
Hoisting Info |
25 |
Freeze Prevention |
26 |
Water Quality |
27 |
Specifications / Base |
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Base |
28 |
Thermal Performance |
28 |
Performance Warranty |
28 |
Design Loading |
29 |
Construction |
29 |
Mechanical Equipment |
29 |
Fill, Louvers and Drift Eliminators |
31 |
Hot Water Distribution System |
31 |
Casing and Fan Guard |
31 |
Access |
31 |
Collection Basin |
32 |
Warranty |
32 |
Specifications / Options |
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|
Stainless Steel Options |
|
Stainless Steel Collection Basin |
33 |
All Stainless Steel CoolingTower |
33 |
Convenience and Safety Options |
|
Mechanical Access Platform |
34 |
Ladder Extension |
34 |
Ladder Safety Cage |
34 |
Control Options |
|
Fan Motor Starter Control Panel |
35 |
Vibration Limit Switch |
36 |
Basin Heater |
36 |
Fan Motor Variable Speed Drive |
36 |
Miscellaneous Options |
|
Equalizer Flume Weir Gates |
38 |
Premium Efficiency Motor |
38 |
Sound Control |
39 |
Marley / MD CoolingTower /
4
■ Air Movement Package
High efficiency fan—wide-chord design for maximum efficiency at low fan tip speeds Eased inlet fan cylinder—ensures full area, low turbulent airflow through the cylinder Spherical roller bearings are rated at an L10 life of 100,000 hours
TEFC Fan Motor—1.15 service factor, variable torque, and specially insulated for cooling tower duty
The MD Series air movement package including the structural support—guaranteed against failure for a period of five full years. The motor is warranted separately by the motor manufacturer
■ Water Distribution System
Pressurized spray system distributes water evenly over the fill
Low-clog polypropylene nozzles—delivers precise distribution of water over the fill area
Marley MC thermoformed PVC film fill assembled into packs for ease of removal and cleaning
Marley XCEL drift eliminators—limit drift losses to no more than .001% of the design GPM flow rate
■ Structure
Induced-draft, counterflow design may require less plan area than crossflow towers typically use
Series 300 stainless steel, 316 stainless steel or heavy mill galvanized steel construction
Factory assembled—ensures final field installation will be hassle-free
Triple-pass PVC inlet louvers—limits splash-out and eliminate sunlight from entering the collection basin
Marley / MD CoolingTower /
5
MDtowers are galvanized steel, factory assembled, counterflow cooling towers,
designed to serve air conditioning and refrigeration systems as well as light to medium industrial process loads on clean water. The Marley MD evolved from a factory-assembled concept of towers pioneered by Marley some 75 years ago, and incorporate all of the design advancements that our customers have found valuable. MD towers represent the current state of the art in this cooling tower category.
The specifications portion of this publication not only relates the language to use in describing an appropriate MD cooling tower—but also defines why certain items and features are important enough to
specify with the intention of insisting upon compliance by all bidders. The left hand column of pages 28 through 39 provides appropriate text for the various specification paragraphs, whereas the right hand
column comments on the meaning of the subject matter and explains its value.
Pages 33 through 39 indicate those paragraphs which will result in the purchase of a basic cooling tower—one that accomplishes the specified thermal
performance, but which will lack many operation—and maintenance-enhancing accessories and features that are usually desired by those persons who are responsible for the continuing operation of the system of which the cooling tower is part. It will also
incorporate those standard materials which testing and experience has proven to provide acceptable longevity in normal operating conditions.
Pages 33 through 39 provide paragraphs intended to add those features, components, and materials that will customize the cooling tower to meet the user‘s requirements.
Marley / MD CoolingTower / Engineering Data : Schematic
6
2578
CL
PLAN
2731
8" INLET
A
SIDE ELEVATION
MD5008 SINGLE CELL
Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative.
The UPDATE web-based selection software —available at spxcooling.com—provides MD model recommendations based on customer's specific design requirements.
35 |
569 |
140
MOTOR
H
END ELEVATION
Marley / MD CoolingTower / Engineering Data : Schematic
7
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MD5008 SINGLE CELL |
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dBA |
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Dimensions |
Design |
Shipping Weight |
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Model |
Nominal Tons |
Motor |
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Operating |
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kg |
||||
1.5m from air |
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note 2 |
note 3 |
kW |
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Weight |
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Heaviest |
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inlet face |
H |
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A |
Weight/Cell |
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kg |
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Section |
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MD5008MAC1L |
165 |
5.5 |
80 |
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MD5008MLC1L |
163 |
5.5 |
79 |
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MD5008NAC1L |
179 |
7.5 |
81 |
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MD5008NLC1L |
179 |
7.5 |
79 |
3294 |
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2181 |
3051 |
1702 |
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891 |
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MD5008PAC1L |
202 |
11 |
81 |
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MD5008PLC1L |
202 |
11 |
80 |
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MD5008QAC1L |
216 |
15 |
81 |
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MD5008QLC1L |
216 |
15 |
80 |
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MD5008MAD1L |
180 |
5.5 |
80 |
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MD5008MLD1L |
177 |
5.5 |
79 |
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MD5008NAD1L |
197 |
7.5 |
81 |
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MD5008NLD1L |
196 |
7.5 |
79 |
3599 |
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2486 |
3176 |
1828 |
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936 |
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MD5008PAD1L |
223 |
11 |
81 |
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MD5008PLD1L |
223 |
11 |
80 |
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MD5008QAD1L |
239 |
15 |
81 |
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MD5008QLD1L |
238 |
15 |
80 |
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MD5008MAF1L |
189 |
5.5 |
80 |
|
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MD5008MLF1L |
185 |
5.5 |
79 |
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MD5008NAF1L |
207 |
7.5 |
81 |
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MD5008NLF1L |
206 |
7.5 |
79 |
3904 |
|
2791 |
3302 |
1953 |
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1062 |
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MD5008PAF1L |
234 |
11 |
81 |
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MD5008PLF1L |
234 |
11 |
80 |
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MD5008QAF1L |
255 |
15 |
81 |
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MD5008QLF1L |
257 |
15 |
80 |
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NOTE
1Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative. All table data is per cell.
2Last two characters of the model number indicate number of cells and cell configuration.
3Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C WB and .68 m3/hr per ton. The Marley UPDATE web-based selection software provides MD model recommendations based on specific design requirements.
4Standard overflow is a 3" dia. M connection located on the side of the collection basin. Makeup water connection is 2" dia. M connection located on the side of the tower. A 3" M drain connection is located on the side of the collection basin.
Marley / MD CoolingTower / Engineering Data : Schematic
8
CL
MD5008 MULTICELL
2578
CL
PLAN
2371 2794 
8" INLET
Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative.
The UPDATE web-based selection software —available at spxcooling.com—provides MD model recommendations based on customer's specific design requirements.
35 |
569 |
140
MOTOR
H
INSTALLED
HEIGHT
A
SIDE ELEVATION |
END ELEVATION |
Marley / MD CoolingTower / Engineering Data : Schematic
9
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MD5008 MULTICELL |
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dBA |
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Dimensions |
Design |
Shipping Weight |
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Model |
Nominal Tons |
Motor |
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Operating |
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kg |
||||
1.5m from air |
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||||||
note 2 |
note 3 |
kW |
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Weight |
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Heaviest |
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inlet face |
H |
|
A |
Weight/Cell |
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|||||
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kg |
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Section |
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MD5008MAC2L |
165 |
5.5 |
80 |
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MD5008MLC2L |
165 |
5.5 |
79 |
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MD5008NAC2L |
179 |
7.5 |
81 |
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MD5008NLC2L |
179 |
7.5 |
79 |
3526 |
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2413 |
3072 |
1723 |
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891 |
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MD5008PAC2L |
202 |
11 |
81 |
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MD5008PLC2L |
202 |
11 |
80 |
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MD5008QAC2L |
217 |
15 |
81 |
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MD5008QLC2L |
217 |
15 |
80 |
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MD5008MAD2L |
180 |
5.5 |
80 |
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MD5008MLD2L |
180 |
5.5 |
79 |
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MD5008NAD2L |
196 |
7.5 |
81 |
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MD5008NLD2L |
196 |
7.5 |
79 |
3831 |
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2718 |
3197 |
1848 |
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957 |
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MD5008PAD2L |
222 |
11 |
81 |
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MD5008PLD2L |
222 |
11 |
80 |
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MD5008QAD2L |
239 |
15 |
81 |
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MD5008QLD2L |
239 |
15 |
80 |
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MD5008MAF2L |
188 |
5.5 |
80 |
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MD5008MLF2L |
188 |
5.5 |
79 |
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MD5008NAF2L |
205 |
7.5 |
81 |
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MD5008NLF2L |
205 |
7.5 |
79 |
4136 |
|
3023 |
3323 |
1974 |
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1083 |
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MD5008PAF2L |
234 |
11 |
81 |
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MD5008PLF2L |
234 |
11 |
80 |
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MD5008QAF2L |
251 |
15 |
81 |
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MD5008QLF2L |
251 |
15 |
80 |
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NOTE
1Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative. All table data is per cell.
2Last two characters of the model number indicate number of cells and cell configuration. Change as appropriate for your selection.
3Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C WB and .68 m3/hr per ton. The Marley UPDATE web-based selection software provides MD model recommendations based on specific design requirements.
4Standard overflow is a 3" dia. M connection located on the side of the collection basin. Makeup water connection is 2" dia. M connection located on the side of the tower. A 3" M drain connection is located on the side of the collection basin.
Marley / MD CoolingTower / Engineering Data : Schematic
10
MD5010 SINGLE CELL
Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative.
2578 |
The UPDATE web-based selection software |
|
—available at spxcooling.com—provides |
||
|
||
|
MD model recommendations based on |
|
|
customer's specific design requirements. |
C |
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|
L |
|
|
PLAN |
|
|
3651 |
35 |
569 |
|
|
140 |
|
8" INLET |
MOTOR |
H
A
SIDE ELEVATION |
END ELEVATION |
Marley / MD CoolingTower / Engineering Data : Schematic
11
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MD5010 SINGLE CELL |
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dBA |
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Dimensions |
Design |
Shipping Weight |
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Model |
Nominal Tons |
Motor |
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Operating |
|
kg |
||||
1.5m from air |
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|
||||||
note 2 |
note 3 |
kW |
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Weight |
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Heaviest |
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inlet face |
H |
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A |
Weight/Cell |
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kg |
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Section |
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MD5010PAC1L |
248 |
11 |
81 |
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MD5010PLC1L |
249 |
11 |
80 |
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MD5010QAC1L |
269 |
15 |
81 |
3412 |
|
2299 |
3883 |
2079 |
|
1052 |
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MD5010QLC1L |
270 |
15 |
80 |
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MD5010RAC1L |
286 |
18.5 |
81 |
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MD5010RLC1L |
289 |
18.5 |
80 |
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MD5010PAD1L |
279 |
11 |
81 |
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MD5010PLD1L |
280 |
11 |
80 |
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MD5010QAD1L |
304 |
15 |
81 |
3717 |
|
2604 |
4046 |
2242 |
|
1190 |
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MD5010QLD1L |
305 |
15 |
80 |
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|||||
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MD5010RAD1L |
325 |
18.5 |
81 |
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MD5010RLD1L |
329 |
18.5 |
80 |
|
|
|
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|
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MD5010PAF1L |
293 |
11 |
81 |
|
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MD5010PLF1L |
294 |
11 |
80 |
|
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|
|
|
|
|
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|
|
|
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|
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|
|
|
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MD5010QAF1L |
317 |
15 |
81 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MD5010QLF1L |
318 |
15 |
80 |
4021 |
|
2909 |
4234 |
2430 |
|
1353 |
|
|
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|
|||||
MD5010RAF1L |
341 |
18.5 |
81 |
|
|
|||||
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|
||||
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MD5010RLF1L |
346 |
18.5 |
80 |
|
|
|
|
|
|
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|
|
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MD5010SAF1L |
360 |
22 |
81 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MD5010SLF1L |
362 |
22 |
81 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NOTE
1Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative. All table data is per cell.
2Last two characters of the model number indicate number of cells and cell configuration.
3Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C WB and .68 m3/hr per ton. The Marley UPDATE web-based selection software provides MD model recommendations based on specific design requirements.
4Standard overflow is a 3" dia. M connection located on the side of the collection basin. Makeup water connection is 2" dia. M connection located on the side of the tower. A 3" M drain connection is located on the side of the collection basin.
Marley / MD CoolingTower / Engineering Data : Schematic
12
MD5010 MULTICELL
2578
C |
C |
L |
L |
|
PLAN |
|
3651 |
|
3715 |
|
8" INLET |
A
Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative.
The UPDATE web-based selection software —available at spxcooling.com—provides MD model recommendations based on customer's specific design requirements.
35 |
569 |
140
MOTOR
H
SIDE ELEVATION |
END ELEVATION |
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