The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.
Owner & Installation
Manual
Signature Series
MGD80*SE*XA Warm Air Gas Furnace
The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.
Page 2
INSTALLATION INSTRUCTIONS
MGD80*SE*XA
Warm Air Gas Furnace
This manual must be left with the homeowner for future reference.
Table of Contents
Unit Dimensions2
Parts Arrangement3
MGD80*E Gas Furnace4
Safety Information4
11
Duct System11
19
21
4
6
6
8
25
29
30
33
34
WARNING
Manufactured By
MRCOOL, LLC
Hickory, KY 42051
Save these instructions for future reference
507332-02CPage 1 of 35mrcool.com
CAUTION
*P507332-02C*
(P) 507332-02C
Page 3
Unit Dimensions
COMBUSTION
AIR INTAKE
Top View
9/16
(14)
33
(838)
A
B
9/16
(14)
EXHAUST AIR
OUTLET
2-1/6 (52)
1 (25)
Front Panel
2 (51)
Either Side
GAS PIPING INLET
(Either Side)
2-1/4 (57)
5
(127)
ELECTRICAL INLET
(Either Side)
RETURN AIR
B
OPENING
27-3/4 (705)
19-17/16 (494)
CONDENSATE
TRAP CONNECTION
(Either Side)
9/16
(14)
9/16
(14)
9-1/8 (232) Right
6-9/16 (157) Left
3/4
(19)
Supply Air
C
3/4
(19)
Front View
Capacity
045-3
070-3
090-417-1/244616-3/8416164066-1/4159
110-52153319-7/850419-1/24958203
14-1/236813-3/8340133304-3/4121
ABCD
in.mmin.mmin.mmin.mm
6-1/2 (165)
Either Side
Supply Air
19-1/4 (489)
Side View
3/4
(19)
507332-02CPage 2 of 35mrcool.com
Page 4
Parts Arrangement
BLOWER
ASSEMBLY
CONTROL
BOX
FLUE
CHASE
INTERNAL
FLUE PIPE
ASSEMBLY
BURNER BOX
ASSEMBLY
ACCESS
PANEL
CABINET
HEAT
EXCHANGER
COMBUSTION AIR
INDUCER
GAS
VALVE
ROLLOUT
LOCATED INSIDE
BURNER BOX
Figure 1.
507332-02CPage 3 of 35mrcool.com
Page 5
MGD80*SE*XA Gas Furnace
MGD80*SE*XA
NOTE: In Direct Vent installations, combustion air is taken
Non-Direct Vent installations, combustion air is taken from
Shipping and Packing List
2 - Screws
3 - Wire nuts
Safety Information
WARNING
DANGER OF EXPLOSION!
Clearances
1 - Wire tie
NOTE:
Installed Locations
507332-02CPage 4 of 35mrcool.com
Page 6
Temperature Rise
NOTE:
Installed in Combination with a Cooling Coil
Use of Furnace as a Construction Heater
DO NOT USE THE UNIT FOR CONSTRUCTION HEAT
UNLESS ALL OF THE FOLLOWING CRITERIA ARE
MET:
Figure 2. Heating Unit Installed Parallel to Air Handler
Unit
Quincy, MA 02269
NOTE:
507332-02CPage 5 of 35mrcool.com
EQUIPMENT MAY EXPERIENCE PREMATURE
COMPONENT FAILURE AS A RESULT OF FAILURE TO
Page 7
DISCLAIMS ALL LIABILITY IN CONNECTION WITH
NOTWITHSTANDING THE FOREGOING, INSTALLER
IS RESPONSIBLE FOR CONFIRMING THAT THE USE
OF CONSTRUCTION HEAT IS CONSISTENT WITH
THE POLICIES AND CODES OF ALL REGULATING
General
•
WARNING
•
•
•
NOTE:
•
•
•
Combustion, Dilution & Ventilation Air
•
•
•
•
•
•
•
•
•
•
•
•
507332-02CPage 6 of 35mrcool.com
Page 8
3
NOTE:
Figure 3.
Inside
Air from Inside
2
Air from Outside
507332-02CPage 7 of 35mrcool.com
Page 9
NOTE:
Figure 4.
Outside
(Inlet Air from Crawlspace & Outlet Air to Ventilated
Attic)
NOTE:
Figure 6.
Outside
Setting Equipment
WARNING
NOTE:
Figure 5.
NOTE:
Outside
(All Air through Ventilated Attic)
507332-02CPage 8 of 35mrcool.com
Page 10
Figure 7.
Figure 9.
Return Air
WARNING
Type of Vent
Connector
*Front
Back00
Sides0†0
Type CType B
0‡0‡
Figure 8.
Clearances
1
See Figure 10
507332-02CPage 9 of 35mrcool.com
Page 11
Cabinet Width
NOTE
Table 1.
Front to RearSide to Side
in.mmin.mm
16-5/8422
19-3/4502
20-1/8511
Figure 11.
Figure 10.
Installation on Combustible Flooring
See Figure 11
CAUTION
Cabinet
Width
Catalog
Number
11M60
11M6122-3/4578
Front to RearSide to Side
in.mmin.mm
22559
NOTE:
Installation on Cooling Coil Cabinet
See Figure 12
NOTE:
18-3/4476
Table 2.
507332-02CPage 10 of 35mrcool.com
Page 12
Filters
Duct System
Society of Heating, Refrigerating and Air Conditioning
Figure 12.
NOTE:
Supply Air Plenum
Return Air Plenum
NOTE:
Figure 13.
Venting
Figure 14.
507332-02CPage 11 of 35mrcool.com
Page 13
IMPORTANT
NOTE:
Figure 15. Vent Connection
Venting Using a Masonry Chimney
IMPORTANT
WARNING
IMPORTANT
507332-02CPage 12 of 35mrcool.com
Page 14
DO NOT
NOTE 1: Refer to the provided venting tables for installations.
Refer to the capacity requirements shown in the provided
venting tables.
Figure 16.
Masonry Chimney
General Venting Requirements
•
•
NOTE:
Figure 17. Common Venting Using Tile Lined Interior Masonry Chimney and Combined Vent Connector
507332-02CPage 13 of 35mrcool.com
Page 15
Connector Diameter
inches (mm)
3 (76)
4 (102)
5 (127)
6 (152)
7 (178)
Connector Length
feet (m)
Table 3.
507332-02CPage 14 of 35mrcool.com
Page 16
Capacity of Type B Double Wall Vents with Type B Double Wall Connectors Serving a Single Category I Appliance
Height
(feet)
NOTE
H
10
15
20
30
Lateral
L
(feet)
0078015202510375
6
8
2135118972715732232
4214930943915350227
6254636914714959223
0084016502760415
21257161092517828263
52353321034217153255
8284939985116464247
0088017502950447
21261171182319426289
52357321134118752280
103051411045417667267
0094019103270502
21169151362022622339
52265301303921949330
102959401215120664315
153553481126119576301
0097020203490540
21075141491825020377
52171291433824247367
102864381335022962351
153458461245921773337
204852551166920684322
00100021303740587
2981131661428318432
52177281603627545421
102770371504826259405
153364441415724970389
205658531326623780374
30NRNR7311388214104346
3 inch4 inch5 inch6 inch
Appliance Input Rating in Thousands of Btu per Hour
MINMAXMINMAXMINMAXMINMAX
Table 4.
507332-02CPage 15 of 35mrcool.com
Page 17
Capacity of Type B Double Wall Vents with Single Wall Metal Connectors Serving a Single Category I Appliance
Height
(feet)
NOTE
H
10
15
20
30
Lateral
L
(feet)
038775915185243126373
6
8
23951609685158123231
4NRNR7492102152146225
6NRNR8389114147163220
037836816483273123412
239565910883176121261
5NRNR77102107188151252
8NRNR9095122161175243
037675717482293120444
239615911782193119287
5525676111105185148277
10NRNR97100132171188261
036935619060325116499
238695713680225115337
5516375128102216144326
10NRNR95116128201182308
15NRNRNRNR158186220290
035965420078346114537
237745614878248113375
5506873140100239141363
10NRNR93129125223177344
15NRNRNRNR155208216325
20NRNRNRNR186192254306
034995321176372110584
237805516476281109429
549747215798271136417
10NRNR91144122255171397
15NRNR115131151239208377
20NRNRNRNR181223246357
30NRNRNRNRNRNRNRNR
3 inch4 inch5 inch6 inch
Appliance Input Rating in Thousands of Btu per Hour
MINMAXMINMAXMINMAXMINMAX
Table 5.
507332-02CPage 16 of 35mrcool.com
Page 18
Vent Connector Capacity
Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances
Vent
Height
H
(feet)
6
8
10
15
20
30
Connector
Rise
R
(feet)
1223735664610658164
2234137754812160183
3244438814913262199
1224035724911464176
2234436805112866195
3244737675313967210
1224334784912365189
2234736865113667206
3245037925214669220
1215033894714264220
2225335964915366235
32455361025116368248
1215433994615762246
22257341054816764259
32360351105017666271
12062311134518160288
22164331184719062299
32266341234819864309
3 inch4 inch5 inch6 inch
Appliance Input Rating in Thousands of Btu per Hour
MINMAXMINMAXMINMAXMINMAX
Table 6.
Common Vent Capacity
Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances
Vent Height
H
(feet)
FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT
69281140116204161309248
810190155129224178339275
1011097169141243194367299
15125112195164283228427352
20136123215183314255475394
30152138244210361297547459
4 inch5 inch6 inch7 inch
Appliance Input Rating in Thousands of Btu per Hour
Table 7.
507332-02CPage 17 of 35mrcool.com
Page 19
Vent Connector Capacity
Type B Double Wall Vents with Single Wall Metal Connectors Serving Two or More Category I Appliances
Vent
Height
H
(feet)
6
8
10
15
20
30
NOTE
Connector
Rise
R
(feet)
1NRNRNRNRNRNRNRNR
2NRNRNRNRNRNR168182
3NRNRNRNR121131175198
1NRNRNRNRNRNRNRNR
2NRNRNRNR125126184193
3NRNRNRNR130138191208
1NRNRNRNR119121182186
2NRNR8485124134189203
3NRNR8991129144197217
1NRNR7987116138177214
2NRNR8394121150185230
3NRNR87100127160193243
149567897115152175238
2525982103120163182252
3556287107125172190264
1476077110112175169278
2516281115117185177290
3546485119122193185300
3 inch4 inch5 inch6 inch
Appliance Input Rating in Thousands of Btu per Hour
MINMAXMINMAXMINMAXMINMAX
Table 8.
Common Vent Capacity
Type B Double Wall Vents with Single Wall Metal Connectors Serving Two or More Category I Appliances
Vent Height
H
(feet)
FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT
6N/A78N/A113200158304244
8N/A87N/A126218173331269
10N/A94163137237189357292
15121108189159275221416343
20131118208177305247463383
30145132236202350286533446
4 inch5 inch6 inch7 inch
Appliance Input Rating in Thousands of Btu per Hour
Instruct the homeowners to pay attention to their
furnace
Red LED Flash Code
LED Off
1
1
NOTE
Not used
Table 16.
507332-02CPage 33 of 35mrcool.com
Page 35
Red LED Flash Code
LED Off
1
1
2
NOTE
2
Not used
Repair Parts List
Cabinet Parts
•
•
•
Control Panel
•Parts Transformer
•
•
•
Blower Parts
•
•
•Motor
•Motor mounting frame
•
•
Table 17.
Heating Parts
•
•
•
•
•
•
•
•
•Ignitor
•
•
•
507332-02CPage 34 of 35mrcool.com
Page 36
Requirements for Commonwealth of Massachusetts
requirements:
INSTALLATION OF CARBON MONOXIDE
DETECTORS
INSPECTION
EXEMPTIONS: The following equipment is exempt
from 24 CMR 5.08(2)(a) 1 through 4:
VENTING SYSTEM PROVIDED.
APPROVED CARBON MONOXIDE DETECTORS.
SIGNAGE
GAS VENT DIRECTLY
BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.
VENTING SYSTEM NOT PROVIDED.
A copy of all installation instructions for all Product
equipment, all venting instructions, all parts lists
instructions shall remain with the appliance or
equipment at the completion of the installation.
507332-02CPage 35 of 35mrcool.com
Page 37
Signature Series
MGD80*SE-XA Warm Air Gas Furnace
ELECTRICIAN and /or HVAC TECHNICIAN:
LICENSE #:
INSTAL LATI ON DAT E:
INSTALLATION LOCATION:
SERIAL NUMBER:
The design and specifications of this product and/or manual are subject to change without prior notice.
Consult with the sales agency or manufacturer for details.
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