Comfortaire Century M5SB A Series Technical Document

NORTEK - Manufactured Housing HVAC Equipment Guide
HVAC EQUIPMENT GUIDE
Electric Furnaces, 80% Gas Furnaces
95% Gas Furnaces, 83% Oil Furnaces
Coils and Accessories
Nortek-Style Manufactured Housing Furnaces

NORTEK - Manufactured Housing HVAC Equipment Guide
NORTEK - Manufactured Housing
HVAC Equipment Guide
Table of Contents
Cover Page.........................................................................................................1
E7-Page .............................................................................................................2
MG1E-Page........................................................................................................3
MG1E-Venting .................................................................................................... 4
MG1E-Nat Gas ...................................................................................................5
MG1E-Propane...................................................................................................6
MG2R-Page........................................................................................................7
MG2R-Venting....................................................................................................8
MG2R-Nat Gas...................................................................................................9
MG2R-Propane ................................................................................................10
M5SB-Page......................................................................................................11
M5SB-Venting ..................................................................................................12
Furnace Duct Connector...................................................................................13

NORTEK - Manufactured Housing HVAC Equipment Guide
MANUFACTURED HOUSING
ELECTRIC FURNACES
E7ED - Downflow
E7EM - Upflow / Downflow
1
E7ED
E7EM
M5SB*B
M5SB*A
MG1E*B
MG1E*A
MG2R*B/C
MG2R*A
MANUFACTURED HOUSING
GAS FURNACES
MG2R*A - Downflow Without Coil Box
MG2R*B - Downflow With Coil Box
MG2R*C - Downflow With Coil Box
MANUFACTURED HOUSING
GAS FURNACES
MG1E*A - Downflow Without Coil Box
MG1E*B - Downflow With Coil Box
MANUFACTURED HOUSING
OIL FURNACES
M5SB*A - Downflow Without Coil Box
M5SB*B - Downflow With Coil Box

NORTEK - Manufactured Housing HVAC Equipment Guide
2
E7-Series Electric Furnaces:
•E7ED Downflow Only w/ 31” Coil Cabinet
•E7EM Upflow/Downflow NO CABINET
E7EM-Series Upflow/Downflow
(All Have 4-Ton Blowers)
E7EM-010H*-- 10kW E7EM-012H*– 12kW
E7EM-015H*– 15kW E7EM-017H*– 17kW
E7EM-020H*– 20kW E7EM-023H*– 23kW
Mounting Bracket
w/ Tabs
Duct
Connector
Insulation
Finger-Tab Duct Connectors
901988A 2” Duct Connector
901989A 4” Duct Connector
901990A 6” Duct Connector
901991A 8” Duct Connector
901992A 10.25” Duct Connector
Solid Door for E7EM
Part # 917260
5-Ton Blower Assembly for E7EM or E7ED
Part # 1027059 (Not Shown)
E7ED-Series Downflow w/ 31” Coil Cabinet
(All Have 4-Ton Blowers)
E7ED-010H*-- 10kW E7ED-012H*– 12kW
E7ED-015H*– 15kW E7ED-017H*– 17kW
E7ED-020H*– 20kW E7ED-023H*– 23kW
Filter Sizes:
E7EM (1) 20x18x1
E7ED (1) 20x18x1, (1) 30x18x1
Optional Frame and Grille Assembly
for E7EM Models Part # 902989
Louvered Door for E7ED
Part # 101480702R

NORTEK - Manufactured Housing HVAC Equipment Guide 3
Mounting Bracket
w/ Tabs
Duct
Connector
Insulation
MG1E-Series 80% AFUE Gas Furnaces:
•MG1E-***F1ABM*Downflow w/ 20” Coil Cabinet
•MG1E-***F1AAM*Downflow NO CABINET
Filter Sizes:
MG1E (All) - 19.5”x 28” Blue Hogs Hair Filter
Finger-Tab Duct Connectors
901988A 2” Duct Connector
901989A 4” Duct Connector
901990A 6” Duct Connector
901991A 8” Duct Connector
901992A 10.25” Duct Connector
Louvered Door for MG1E (All)
Part # 903407
**SEE NEXT PAGE FOR VENT PRODUCTS**
MG1E-***F1AAM* Downflow with no coil cab
(All Have 4-Ton Blowers)
MG1E-056F1AAM*– 56KBtu Input
MG1E-070F1AAM*– 70KBtu Input
MG1E-077F1AAM*– 77KBtu Input
MG1E-090F1AAM*– 90KBtu Input
High Altitude (above 2000’ Installation) for MG1E (ALL):
See Nat/LP Orifice Page MANDATORY
1018498 High Altitude Pressure Switch Hose Kit – used where
nuisance tripping occurs on OEM switch OPTIONAL
MG1E-***F1ABM* Downflow w/ 20” Coil Cab
(All Have 4-Ton Blowers)
MG1E-056F1ABM* – 56KBtu Input
MG1E-070F1ABM* – 70KBtu Input
MG1E-077F1ABM* – 77KBtu Input
MG1E-090F1ABM* – 90KBtu Input
26” Coil Cabinet - Part # 922594
Louvered Door for MG1E (All)
Part # 903407
Solid Door for Coil Cab on MG1E-***F1ABM* ONLY
Part # 903094

NORTEK - Manufactured Housing HVAC Equipment Guide
MG1E-Series 80% AFUE Gas Furnaces:
•MG1E-***F1ABM*Downflow w/ 20” Coil Cabinet
•MG1E-***F1AAM*Downflow NO CABINET
TO SELECT ROOFJACK: A + B (+X IF PITCHED ROOF)
FLAT ROOF JACKS: Use alone or in combination with wedges below for pitched roofs
903658 – Flat Roof Jack 15” to 23”
903659 – Flat Roof Jack 21” to 35”
903660– Flat Roof Jack 27” to 47”
PITCHED ROOF JACKS: Use alone or in combination with wedges below for higher pitch roofs
903664 – 2/12 Pitch Roof Jack 35” to 63”
920638 – 2/12 Pitch Roof Jack 51” to 95”
ROOF WEDGES: Use in combination with Flat or Pitched Roof Jacks
903893 – 2.5/12 Roof Wedge
903894 – 3/12 Roof Wedge
903895 – 4/12 Roof Wedge
ROOFJACK ACCESSORIES:
902521 – Ceiling Ring for Roof Jacks
901937 – 16” Exterior Roof Jack Extension
901935 – 10” Interior Roof Jack Extension
903107 – 18” interior Roof Jack Extension
4

NORTEK - Manufactured Housing HVAC Equipment Guide
MG1E-Series 80% AFUE Gas Furnaces NAT GAS Orifice Selection
ORIFICE PART NUMBERS:
661017R - #17 661018R - #18 661019R - #19** 661020R - #20 661021R -
#21
661022 - #22 662023R - #23 661024R - #24 661025R - #25 661026R -
#26
661027 - #27 661028 - #28 661029R - #29 661030R - #30 661031 - #31
661032R - #32** 661035 - #35 661036R - #36 661037R - #37 661038 - #38
661039R - #39** 661040 - #40 661041R - #41 661042R - #42 661043R - #43
661044R - #44 661045R - #45 661046R - #46 661047R - #47 661048R - #48
661049R -#49 661050R - #50 661051R - #51 661052R – #52 661055R - #55
661056R - #56 661057R - #57 661058R - #58 661059 - #59 661060 - #60
661061R - #61
**NOTE: #19, #32, and #39 Orifices have been discontinued. Use the next size smaller orifice**
NATURAL GAS ORIFICES: Use the following steps to determine appropriate orifice for installation altitude.
1. Consult Local Utility for “LOCAL HEATING VALUE” at installation site. Use “Local Heating Values” chart to
determine if this value is considered “LOW” or “HIGH” based on installation altitude.
2. Use “Natural Gas – High Heating Value” or “Natural Gas – Low Heating Value” chart to determine appropriate
orifice based on furnace model.
5

NORTEK - Manufactured Housing HVAC Equipment Guide
MG1E-Series 80% AFUE Gas Furnaces PROPANE Orifice Selection
ORIFICE PART NUMBERS:
661017R - #17 661018R - #18 661019R - #19** 661020R - #20 661021R -
#21
661022 - #22 662023R - #23 661024R - #24 661025R - #25 661026R -
#26
661027 - #27 661028 - #28 661029R - #29 661030R - #30 661031 - #31
661032R - #32** 661035 - #35 661036R - #36 661037R - #37 661038 - #38
661039R - #39** 661040 - #40 661041R - #41 661042R - #42 661043R - #43
661044R - #44 661045R - #45 661046R - #46 661047R - #47 661048R - #48
661049R -#49 661050R - #50 661051R - #51 661052R – #52 661055R - #55
661056R - #56 661057R - #57 661058R - #58 661059 - #59 661060 - #60
661061R - #61
**NOTE: #19, #32, and #39 Orifices have been discontinued. Use the next size smaller orifice**
NOTES: Includes 4% Input Reduction for each 1,000 feet. Reference Sources: ANSI Z223.1, CSA B149.1, NFPA 54 and National Fuel Gas Code.
PROPANE ORIFICES: Use the chart below to determine appropriate orifice based on model and installation altitude.
6

NORTEK - Manufactured Housing HVAC Equipment Guide
Mounting Bracket
w/ Tabs
Duct
Connector
Insulation
MG2R-Series 95% AFUE Gas Furnaces:
•MG2R-***F1ABM*Downflow w/ 20” Coil Cabinet
•MG2R-***F1ACM* Downflow w/ 25” Coil Cabinet
•MG2R-***F1AAM*Downflow NO CABINET
Finger-Tab Duct Connectors
901988A 2” Duct Connector
901989A 4” Duct Connector
901990A 6” Duct Connector
901991A 8” Duct Connector
901992A 10.25” Duct Connector
MG2R-***F1AAM* Downflow with no coil cab
(All Have 4-Ton Blowers)
MG2R-045F1AAM*– 45KBtu Input
MG2R-060F1AAM*– 60KBtu Input
MG2R-072F1AAM*– 72KBtu Input
MG2R-***F1ABM* Downflow w/ 20” Coil Cab
(All Have 4-Ton Blowers)
MG2R-045F1ABM* – 56KBtu Input
MG2R-060F1ABM* – 70KBtu Input
MG2R-072F1ABM* – 72KBtu Input
Louvered Door for MG2R
Part # 903977 (F1AAM*/F1ABM*)
Part # 104391801R (F1ACM*)
Solid Door for MG2R Coil Cab
Part # 903094 (F1ABM*)
Part # 104391803R (F1ACM*
Filter Sizes:
MG2R (All) - 19.5”x 21.5” Blue Hogs Hair Filter
26” Coil Cabinet - Part # 922594
**SEE NEXT PAGE FOR VENT PRODUCTS**
MG2R-***F1ACM* Downflow w/ 25” Coil Cab
(All Have 4-Ton Blowers)
MG2R-045F1ACM* – 56KBtu Input
MG2R-060F1ACM* – 70KBtu Input
MG2R-072F1ACM*
– 72KBtu Input
7

NORTEK - Manufactured Housing HVAC Equipment Guide
MG2R-Series 95% AFUE Gas Furnaces:
•MG2R-***F1ABM*Downflow w/ 20” Coil Cabinet
•MG2R-***F1ACM* Downflow w/ 25” Coil Cabinet
•MG2R-***F1AAM*Downflow NO CABINET
CONCENTRIC PVC KITS: Vertical or Horizontal Intake and Exhaust Termination Kit
904952 – 2” Concentric for MG2R
904953 – 3” Concentric for MG2R
TRANSITION VENT KIT: Use with Existing Roof Jack Opening
904106 – 2” Transition Vent Kit for MG2R
PIPING SIZE TABLE: Combined Intake and Exhaust Max. Length
*Consult IOM for complete venting information
1. Subtract 2.5ft. for each additional 2” Long Radius Elbow, subtract 5ft. for each
additional 2” Short Radius Elbow, subtract 3.5ft. for each additional 3” Long
Radius Elbow, and 7ft. for each additional 3” Short Radius Elbow.
2. Two (2) 45 degree elbows are equivalent to one (1) 90 degree elbow.
3. This table applies for elevations from sea level to 2,000ft. elevation. For higher
elevations, decrease pipe lengths by 8% per 1000ft. of altitude.
8

NORTEK - Manufactured Housing HVAC Equipment Guide
MG2R-Series 95% AFUE Gas Furnaces NAT GAS Orifice Selection
ORIFICE PART NUMBERS:
661017R - #17 661018R - #18 661019R - #19** 661020R - #20 661021R -
#21
661022 - #22 662023R - #23 661024R - #24 661025R - #25 661026R -
#26
661027 - #27 661028 - #28 661029R - #29 661030R - #30 661031 - #31
661032R - #32** 661035 - #35 661036R - #36 661037R - #37 661038 - #38
661039R - #39** 661040 - #40 661041R - #41 661042R - #42 661043R - #43
661044R - #44 661045R - #45 661046R - #46 661047R - #47 661048R - #48
661049R -#49 661050R - #50 661051R - #51 661052R – #52 661055R - #55
661056R - #56 661057R - #57 661058R - #58 661059 - #59 661060 - #60
661061R - #61
**NOTE: #19, #32, and #39 Orifices have been discontinued. Use the next size smaller orifice**
NATURAL GAS ORIFICES: Use the following steps to determine appropriate orifice for installation altitude.
1. Consult Local Utility for “LOCAL HEATING VALUE” at installation site. Use “Local Heating Values” chart to
determine if this value is considered “LOW” or “HIGH” based on installation altitude.
2. Use “Natural Gas – High Heating Value” or “Natural Gas – Low Heating Value” chart to determine appropriate
orifice based on furnace model.
9

NORTEK - Manufactured Housing HVAC Equipment Guide
MG2R-Series 95% AFUE Gas Furnaces PROPANE Orifice Selection
ORIFICE PART NUMBERS:
661017R - #17 661018R - #18 661019R - #19** 661020R - #20 661021R -
#21
661022 - #22 662023R - #23 661024R - #24 661025R - #25 661026R -
#26
661027 - #27 661028 - #28 661029R - #29 661030R - #30 661031 - #31
661032R - #32** 661035 - #35 661036R - #36 661037R - #37 661038 - #38
661039R - #39** 661040 - #40 661041R - #41 661042R - #42 661043R - #43
661044R - #44 661045R - #45 661046R - #46 661047R - #47 661048R - #48
661049R -#49 661050R - #50 661051R - #51 661052R – #52 661055R - #55
661056R - #56 661057R - #57 661058R - #58 661059 - #59 661060 - #60
661061R - #61
**NOTE: #19, #32, and #39 Orifices have been discontinued. Use the next size smaller orifice**
PROPANE ORIFICES: Use the chart below to determine appropriate orifice based on model and installation altitude.
10

NORTEK - Manufactured Housing HVAC Equipment Guide
Mounting Bracket
w/ Tabs
Duct
Connector
Insulation
Louvered Door for M5SB (All)
Part # 903407
M5SB-***A-AW* Downflow with no coil cab
(All Have 3-Ton Blowers)
M5SB-066A-AW*– 66KBtu Input
M5SB-086A-AW*– 86KBtu Input
M5SB-Series 83% AFUE Oil Furnaces:
•M5SB-***A-BW*Downflow w/ 20” Coil Cabinet
•M5SB-***A-AW*Downflow NO CABINET
M5SB-***A-BW* Downflow w/ 20” Coil Cab
(All Have 3-Ton Blowers)
M5SB-066A-AW*– 66KBtu Input
M5SB-086A-AW*– 86KBtu Input
26” Coil Cabinet - Part # 922594
Finger-Tab Duct Connectors
901988A 2” Duct Connector
901989A 4” Duct Connector
901990A 6” Duct Connector
901991A 8” Duct Connector
901992A 10.25” Duct Connector
4-Ton and 5-Ton Blower Upgrade Kit (not shown)
903413 – 4T Upgrade Kit
903890 – 5T Upgrade Kit
Louvered Door for M5SB (All)
Part # 903407
Filter Sizes:
M5SB (All) - 19.5”x 28” Blue Hogs Hair Filter
Solid Door for Coil Cab on M5SB-***A-BW* ONLY
Part # 903094
**SEE NEXT PAGE FOR VENT PRODUCTS**
11

NORTEK - Manufactured Housing HVAC Equipment Guide
TO SELECT ROOFJACK: A + B (+X IF PITCHED ROOF)
FLAT ROOF JACKS: Use alone or in combination with wedges below for pitched roofs
903658 – Flat Roof Jack 15” to 23”
903659 – Flat Roof Jack 21” to 35”
903660 – Flat Roof Jack 27” to 47”
PITCHED ROOF JACKS: Use alone or in combination with wedges below for higher pitch roofs
903664 – 2/12 Pitch Roof Jack 35” to 63”
920638– 2/12 Pitch Roof Jack 51” to 95”
ROOF WEDGES: Use in combination with Flat or Pitched Roof Jacks
903893 – 2.5/12 Roof Wedge
903894 – 3/12 Roof Wedge
903895 – 4/12 Roof Wedge
ROOFJACK ACCESSORIES:
902521 – Ceiling Ring for Roof Jacks
901937 – 16” Exterior Roof Jack Extension
901935 – 10” Interior Roof Jack Extension
903107 – 18” interior Roof Jack Extension
M5SB-Series 83% AFUE Oil Furnaces:
•M5SB-***A-BW*Downflow w/ 20” Coil Cabinet
•M5SB-***A-AW*Downflow NO CABINET
12

NORTEK - Manufactured Housing HVAC Equipment Guide
Step 1: Select duct connector based on distance/depth
from finished floor to supply duct. Duct connector is lowered
into hole through insulation ring. Corresponding hole is cut
in supply duct to match duct connector finger/screw tabs.
Step 2: Mounting bracket with tabs is slid underneath and
centered side-to-side. Duct connector is then attached and
sealed to supply duct using industry-approved methods –
see furnace installation manual for more details.
Step 3: Duct connector is then attached to the floor using
appropriate screws, flat-head nails, or staples.
Step 4: Furnace is slid back to against mounting bracket and
secured to floor using methods detailed in install manual.
DUCT CONNECTOR INSTALLATION DETAILS
•E7-Series, MG1E-Series, MG2R-Series, and M5SB-Series
13

NORTEK - Manufactured Housing HVAC Equipment Guide
Representative drawing only.
Some models may vary in appearance.
TXV for 1.5 - 2.5 Ton H4TXV01
TXV for 3 - 4 Ton H4TXV02
TXV for 5 Ton H4TXV03
86
MANUFACTURED
HOUSING COILS
CMH Series
SPECIFICATIONS
• Ried copper tubing, enhanced aluminum ns
• Immersion-tested at 500 psi, then nitrogen-pressurized and sealed
• Left-hand refrigerant and plumbing connections
• Externally mounted owrater body with Schrader valve
• Heavy duty plastic drain pans on all models
• AHRI certiable with certain brands of A/C and heat pump systems
• UL listed for use with both R-22 and R-410a when proper metering
device is used
Warranty—6 years on parts, 10 years when installed
as a part of a residential AHRI matched system
(Some limitations apply; see printed warranty for details.)
www.marsdelivers.com
Line-Set Connection Size
1-1/2 - 3 Ton 3/8" x 3/4"
3-1/2 - 5 Ton 3/8" x 7/8"
For Comfort-Aire/Century extended OEM ratings,
please visit www.marsdeliversratings.com
HVAC Ratings and Combinations
Real-Time Ratings Generator

NORTEK - Manufactured Housing HVAC Equipment Guide
SP-1M 9/23 CMH-COIL_SPEC
Due to ongoing product improvements, specications and dimensions are subject to change and correction without notice
or incurring obligations. Determining the application and suitability for use of any product is the responsibility of the installer.
Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations.
Third party incentive and rebate programs have precise requirements as to product performance and certication.
All products meet applicable regulations in effect on date of manufacture; however, certications are not necessarily granted for the life of a product.
Therefore, it is the responsibility of the applicant to determine whether a specic model qualies for these incentive/rebate programs.
CMH Series
“This product complies with all California product
labeling laws including, but not limited to, the Safe
Drinking W
ater and Toxic Enforcement Act of 1986,
more commonly known as Proposition 65.”
Coil Model Nominal Tonage
Dimensions
Weight
Pallet
Qty
R-22
PistonPan Widths (W)" Pan Depth (D)" Coil Height (H)"
CMH18/36PM1M 1.5 - 3 18" 19-1/2" 17" 32 8 0.067
CMH24/30PM1M 2 - 2.5 18" 19-1/2" 19" 35 8 0.059
CMH24/36PM1M 2 - 3 18" 19-1/2" 17" 42 8 0.067
CMH36PM2M 2.5 - 3 18" 19-1/2" 19" 45 8 0.067
CMH42/48PM1M 3.5 - 4 18" 19-1/2" 19" 35 8 0.076
CMH42/48PM2M 3.5 - 4 18" 19-1/2" 19" 45 8 0.076
CMH48PM2M 3.5 - 4 18" 19-1/2" *21" 48 4 0.093
CMH48/60PM1M 4 - 5 18" 19-1/2" *25" 46 4 0.093
CMH48/60PM2M 4 - 5 18" 19-1/2" *23" 49 4 0.093
DIMENSIONS
Coils are shipped with R-410A pistons already installed. *Same Piston is used for R-22 and R-410A
These are Replacement Service Coils "Only" and are not RATED. For Manufactured Housing Use Only
W
H
D
Coil Model Nominal Tonage
Dimensions
Weight
Pallet
Qty
R-22
PistonPan Widths (W)" Pan Depth (D)" Coil Height (H)"
CMH18/24PM3M 1.5 - 2 18" 19.5" 11" 22 8 0.053
CMH36PM3M 3 18" 19.5" 15" 28 8 0.073
CMH42/60PM3M 3.5 - 5 18" 19.5" 19" 45 8 *0.093
SERVICE COIL DIMENSIONS
Description Piston Size Part Number Tonnage Outdoor
Unit
R-22 Pistons
41 176799941 12
53 176799953 18
59 176799959 24
67 176799967 30
73 176799973 36
80 176799980 42
84 176799984 48
93 176799993 60
R-410A Pistons
41 176799941 12
49 176799949 18
53 176799953 24
59 176799959 30
67 176799967 36
73 176799973 42
76 176799976 48
93 176799993 60
PISTONS
*(In reference to coil model number) NOTE:
21" or taller coils can only be used with
the following equipment combinations -
Nortek Style:
E7-Series Electric Furnaces (All Models)
MG1E/MG2R/M5SB with 922594 26" Coil
Box (NOT FOR STANDARD 20" COIL BOX)
JCI Style:
EBE-Series Electric Furnaces with
3500-8602 Cabinet Extension

NORTEK - Manufactured Housing HVAC Equipment Guide
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NORTEK - Manufactured Housing HVAC Equipment Guide
NOTES
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NORTEK - Manufactured Housing HVAC Equipment Guide
SP-1M 11/23 MH-NGUIDE
Due to ongoing product improvements, specications and dimensions are subject to change and correction without notice
or incurring obligations. Determining the application and suitability for use of any product is the responsibility of the installer.
Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations.
Third party incentive and rebate programs have precise requirements as to product performance and certication.
All products meet applicable regulations in eect on date of manufacture; however, certications are not necessarily granted for the life of a product.
Therefore, it is the responsibility of the applicant to determine whether a specic model qualies for these incentive/rebate programs.
“This product complies with all California product
labeling laws including, but not limited to, the Safe
Drinking W
ater and Toxic Enforcement Act of 1986,
more commonly known as Proposition 65.”
Nortek-Style Manufactured Housing Furnaces