MRCOOL MGM95SE135D5XA 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

MGM*95SE*XA 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.

Gas Furnace

INSTALLATION INSTRUCTIONS

MGM*95SE*XA

Warm Air Gas Furnace

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

Table of Contents

2
3

Gas Piping 38

WARNING

MRCOOL, LLC

13
13
16

6
6
9

CAUTION

50
52
55
56

*F507276-C*

(P) 507276-05C

Save these instructions for future reference

507276-05C Page 1 of 57mrcool.com

Unit Dimensions

1

NOTE - C*5 5

2

R Air B

Model

070-3

110-5

135-5

FRONT VIEW SIDE VIEW

A B C D

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

16

21 533

622 23 283

505 238

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Parts Arrangement

Figure 1.

507276-05C Page 3 of 57mrcool.com

Gas Furnace

MG*95SE*XA

MG*95SE*XA

NOTE: In Direct Vent installations, combustion air is taken

Shipping and Packing List

Non-Direct Vent installations, combustion air is taken from

Figure 2.

NOTE:

Safety Information

DANGER

DANGER OF EXPLOSION!

Figure 3.

MG*95SE*XA

Building Codes

507276-05Cmrcool.com

Installation Locations

NOTE:

NOTE:

Figure 4. Heating Unit Installed Parallel to Air Handler

Unit

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:

507276-05C Page 5 of 57mrcool.com

COMPONENT FAILURE AS A RESULT OF FAILURE TO

•

•

NOTE:

•

•

•

CAUTION

General

•

Combustion, Dilution & Ventilation Air

NOTE: In Non-Direct Vent Installations, combustion air is

•

•

507276-05CPage 6 of 57 mrcool.com

WARNING

•

•

•

•

•

•

•

•

•

•

•

•

•

CAUTION

Air from Inside

507276-05C Page 7 of 57mrcool.com

Figure 5.

Air from Outside

Inside

Figure 7.

ROOF TERMINATED

EXHAUST PIPE

Outside

(All Air through Ventilated Attic)

Figure 6.

Outside

(Inlet Air from Crawl Space and Outlet Air to

Ventilated Attic)

OUTLET AIR

SIDE WALL

TERMINATED

EXHAUST PIPE

(ALTERNATE

LOCATION)

NOTE−Each air duct opening shall have a free area of at least one
square inch per 2,000 Btu (645mm
input rating of all equipment in the enclosure. If the equipment room
is located against an outside wall and the air openings communi­cate directly with the outdoors, each opening shall have a free area
of at least 1 square inch per 4,000 Btu (645mm
hour of the total input rating of all other equipment in the enclosure.

FURNACE

INLET AIR

2

per .59kW) per hour of the total

2

per 1.17kW) per

Figure 8.

Outside

507276-05CPage 8 of 57 mrcool.com

WARNING

Shipping Bolt Removal

Roof Terminated

Exhaust Pipe

Ventilation Louvers

*Intake Debris

Screen

(Provided)

Furnace

Inlet Air
(Minimum 12 in.
(305mm) above

Attic Floor)

* See Maximum Vent Lengths table

NOTE

Figure 9.

(Inlet Air from Ventilated Attic and Outlet Air to

Outside)

Roof Terminated

Exhaust Pipe

Figure 11.

Installation

Setting Equipment

WARNING

Inlet Air

Minimum

Ventilation

Louvers

(Crawl Space)

Coupling or
3 in. to 2 in.

Transition

(Field Provided)

Furnace

12 in. (305mm)

above Crawl
Space Floor

*Intake Debris Screen Provided

* See Maximum Vent Lengths table

NOTE

Figure 10.

(Inlet Air from Ventilated Crawl Space and Outlet Air

to Outside)

507276-05C Page 9 of 57mrcool.com

WARNING

WARNING

Figure 12. Setting Equipment

Top

Left Side

Right Side

Bottom (Floor)

Top/Plenum 1 in. (25 mm)

*Front 0

Back 0

Sides 0†

Vent 0

Floor 0‡

*Front clearance in alcove installation must be 24 in. (610 mm).

Maintain a minimum of 24 in. (610 mm) for front service access.

†Allow proper clearances to accommodate condensate trap.
‡For installations on a combustible

on carpeting, tile or other combustible materials other than wood

ooring.

oor, do not install the furnace directly

0

0

0†

0

0‡

Figure 13. Installation Clearances

507276-05CPage 10 of 57 mrcool.com

Return Air Guidelines

Figure 14. Side Return Air

(with Transition and Filter)

Figure 15. Optional Return Air Base

507276-05C Page 11 of 57mrcool.com

Right−Hand Discharge

dnEthgiRdnEtfeL

Figure 16. Removing the Bottom Panel

Removing the Bottom Panel

Horizontal Applications

WARNING

Air

Flow

Air

Flow

Bottom (Floor)**

Left−Hand Discharge

Top

dnEthgiRdnEtfeL

Air

Flow

Air

Flow

Bottom (Floor)**

Top 0

Front* 0

Back 0

Ends 0

Vent 0

Floor 0‡

* Front clearance in alcove installation must be 24 in. (610 mm).

Maintain a minimum of 24 in. (610 mm) for front service access.

**An 8" service clearance must be maintained below the unit to provide

for servicing of the condensate trap.

‡For installations on a combustible

on carpeting, tile or other combustible materials other than wood

ooring.

oor, do not install the furnace directly

0

0

0†

0

0‡

Figure 17.

Figure 18. Installation Clearances

Horizontal Applications

Suspended Installation of Horizontal Unit

Figure 19. Typical Horizontal Application

507276-05CPage 12 of 57 mrcool.com

NOTE:

Filters

NOTE:

Platform Installation of Horizontal Unit

Furnace Cabinet

Width

Duct System

NOTE:

Supply Air Plenum

Filter Size

Side Return Bottom Return

Table 1.

Figure 20.

Return Air - Horizontal Applications

507276-05C Page 13 of 57mrcool.com

Return Air Plenum

NOTE:

F891

MGM95*E

CAUTION

IMPORTANT

(Pipe)

PRIMER & SOLVENT CEMENT

CANADA PIPE & FITTING & SOLVENT

CEMENT

F628

ASTM

SPECIFICATION

F656

MARKING

Canadian Applications Only

POLYPROPYLENE VENTING SYSTEM

TM

Table 2.

ULCS636

ULC-S636

ULC-S636

ULC-S636

507276-05Cmrcool.com

STANDARD CONCENTRIC

Capacity

070

090

110

135 3

VENT

PIPE DIA.

(in.)

2

3

2

3

2

3

2

3

Outdoor
Exhaust

Accelerator

(Dia. X Length)

Outdoor
Exhaust

Accelerator

(Dia. X Length)

Flush Mount

Kit

51W11**

Concentric Kit Kit Kit

71M80

OR

+44W92++

69M29

OR

+44W92++

60L46

OR

44W93+

Joint Cementing Procedure

NOTE:

DANGER

DANGER OF EXPLOSION!

Table 3. Outdoor Termination Kits Usage

NOTE:

507276-05C Page 15 of 57mrcool.com

NOTE:

Venting Practices

WARNING

CARBON MONOXIDE POISONING HAZARD

Figure 21.

Removal of the Furnace from Common Vent

507276-05CPage 16 of 57 mrcool.com

CHIMNEY

OR GAS

VENT

(Check sizing

for remaining

appliance)

REPLACING FURNACE THAT

Vent Piping Guidelines

WAS PART OF A COMMON

VENT SYSTEM

NOTE: In non-Direct Vent installations, combustion air is

In Direct Vent installations, combustion air is taken from

FURNACE

(Removed from

from common
vent system)

If this gas furnace replaces a furnace which
was commonly vented with another gas appliance,
the size of the existing vent pipe for that gas
appliance must be checked. Without the heat of the
original furnace flue products, the existing vent pipe
is probably oversized for the single water heater or
other appliance. The vent should be checked for
proper draw with the remaining appliance.

Exhaust Piping

WATER

HEATER

Figure 22.

OPENINGS

(ToAdjacent

Room)

MRCOOL, LLC

NOTE:

NOTE:

CAUTION

CAUTION

507276-05C Page 17 of 57mrcool.com

Figure 23.