MRCOOL MGD80SE110C5A Installation Manual

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.

INSTALLATION INSTRUCTIONS

MGD80*SE*XA

Warm Air Gas Furnace

This manual must be left with the homeowner for future reference.

Table of Contents

Unit Dimensions 2
Parts Arrangement 3
MGD80*E Gas Furnace 4

Safety Information 4

11

Duct System 11

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

507332-02C Page 1 of 35mrcool.com

CAUTION

*P507332-02C*

(P) 507332-02C

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

090-4 17-1/2 446 16-3/8 416 16 406 6-1/4 159

110-5 21 533 19-7/8 504 19-1/2 495 8 203

14-1/2 368 13-3/8 340 13 330 4-3/4 121

A B C D

in. mm in. mm in. mm in. mm

6-1/2 (165)

Either Side

Supply Air

19-1/4 (489)

Side View

3/4

(19)

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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.

507332-02C Page 3 of 35mrcool.com

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

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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:

507332-02C Page 5 of 35mrcool.com

EQUIPMENT MAY EXPERIENCE PREMATURE
COMPONENT FAILURE AS A RESULT OF FAILURE TO

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

•

•

•

•

•

•

•

•

•

•

•

•

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3

NOTE:

Figure 3.

Inside

Air from Inside

2

Air from Outside

507332-02C Page 7 of 35mrcool.com

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)

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Figure 7.

Figure 9.

Return Air

WARNING

Type of Vent

Connector

*Front

Back 0 0

Sides 0† 0

Type C Type B

0‡ 0‡

Figure 8.

Clearances

1

See Figure 10

507332-02C Page 9 of 35mrcool.com

Cabinet Width

NOTE

Table 1.

Front to Rear Side to Side

in. mm in. mm

16-5/8 422

19-3/4 502

20-1/8 511

Figure 11.

Figure 10.

Installation on Combustible Flooring

See Figure 11

CAUTION

Cabinet

Width

Catalog
Number

11M60

11M61 22-3/4 578

Front to Rear Side to Side

in. mm in. mm

22 559

NOTE:

Installation on Cooling Coil Cabinet

See Figure 12

NOTE:

18-3/4 476

Table 2.

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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.

507332-02C Page 11 of 35mrcool.com