Design Guidelines and Standards Manual
University of Cincinnati
15250D - MECHANICAL INSULATION
A.
SECTION INCLUDES
1.
2.
3.
B.
GENERAL DESIGN CRITERIA
1.
2.
3.
C.
Piping
Ductwork
Equipment
Internal duct insulation and lining is not permitted unless it is required because of
acoustical concerns within the space. Where needed for acoustics, a flexible
elastomer cellular insulation such as AP Armaflex SA by Armstrong is acceptable.
Specify vapor barrier on cold surfaces (temp < 60F); and emphasize importance of
preserving the integrity of the barrier, particularly during construction when it is most
susceptible to damage.
Specify insulation where required on hot surfaces, to prevent burning hazard to
people.
INSULATION MATERIAL
1.
Symbol Legend
a.
INSULATION TYPE
TYPE
Glass Fiber Performed
SYMBOL
GFP
Glass Fiber Board
Glass Fiber Block
Cellular Glass
GFB
GFBL
CG
b.
SYMBOL
FEC
CS
UR
INSULATION JACKET, FIELD APPLIED
DESCRIPTION
Foil and Paper
Plastic (Polyvinyl
chloride)
Aluminum
c.
TYPE
Flexible Elastomeric
Cellular
Calcium Silicate
Urethane
SYMBOL
FP
PVC
Stainless Steel
SS
DESCRIPTION
Drinking Fountain Drain
SYMBOL
DFD
A
PIPING SYSTEMS
DESCRIPTION
Boiler Blowdown
MECHANICAL INSULATION
SYMBOL
BBD
15250 - D1
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
2.
Boiler Feedwater
Boiler Flue
Brine Supply
Brine Return
Chilled Water Supply
Chilled Water Return
Condenser Water Supply
BFW
BF
BS
BR
CHS
CHR
CWS
Condenser Water Return
CWR
Cooling Coil Condensate
Drains
Domestic Cold Water
Domestic Hot Water
Supply
Domestic Hot Water
Return
CCD
Engine Exhaust, Diesel
EE
Heating Hot Water Supply
Heating Hot Water Return
Roof Storm Drain
Sanitary Drains, Fixtures
Steam, Low Pressure (0-15
psig)
Steam, High Pressure (P>15
psig)
Steam Condensate Return
HWS
HWR
RSD
SAN
LPS
HPS
CR
DCW
DHS
DHR
Insulation Schedule
ITEM
GLASS FIBER
(GF)
Temperature
Range
Material
-20 to +450F,
Jacket: 150F Max
Inorganic Glass
Fiber, Bonded
Type
 Rigid Molded
 Semi-Rigid Board
 Block
 Blanket
C 547 Class
1(Mold)
C 612 Class 2(Brd)
C
C 553 Type II
Class F-1 (Blanket)
0.26 Ave @ 75F
Mean Temp
10 - 12 PCF
ASTM
Thermal
Conductivity
Density
MECHANICAL INSULATION
CELLULAR
GLASS
(CG)
-450 to +800 F
Jacket: 150F Max
Inorganic Foamed or
Cellulated Glass,
Annealed, Rigid,
Hermetically Sealed
Cells, Incombustible
 Block
 Performed Pipe
 Special Shapes
FLEXIBLE
ELASTOMERIC
CELLULAR (FEC)
-40 to +200F
Flexible, Expanded
Closed-Cell Structure,
Smooth Skin, Both
Sides. Max 5%
Shrinkage @ 200F
for 7 Days
Tubular
Sheet
C 552:
Type I (Boards)
Type II-Class 2
(Performed)
Type III (Special)
C 354, Type I
(Tubular)
C 354, Type II (Sheet)
0.38 Ave @ 75F
Mean Temp
7 PCF (Min)
0.30 Ave @ 75F
15250 - D2
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
9.5 PCF (Max)
MECHANICAL INSULATION
15250 - D3
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
Moisture
Absorption
Jacket
< 0.2% By Volume
Factory Applied,
Flame Retardant,
White Kraft Paper
Vapor Barrier,
Bonded to Alum
Foil, Glass Fiber
Reinforced, 0.02
Perm
[3%][6%] Max by Wt.
Factory Applied
ASTM C 921, Type
1, Laminated Foil,
Flame Retardant,
Vinyl Facing
Features
Water Based Latex
Enamel 0.2 Perm Max
Flame: Self
Extinguishing
Misc.
ITEM
Temperature
Range
Material
Type
ASTM
Thermal
Conductivity
Density
Moisture
Absorption
Jacket
Features
MECHANICAL INSULATION
CALCIUM
SILICATE (CS)
+100 TO +1600F
URETHANE (UR)
(Outdoor Use Only)
-60 to +220F
Inorganic Hydrous
Calcium Silicate,
Fibrous
Reinforcement
(Non-Asbestos)
Incombustible
Molded Block
 Curved Block
 Performed Pipe
C 533, Type I
0.60 @ 500 F
Cellular Foam,
Plastic (Urethane)
Molded for Pipe
0.16 @ 100F
15 PCF Max
Flame Spread: 0
Smoke Developed:
0
UL ASTM E 84
Test
 ASJ Vapor
Barrier: 0.02 Perm
 Puncture
Resistance: 50
Beach Units
Flame Spread: 75
Max
UL ASTM E 84
Test
15250 - D4
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
 Shrinkage: 2%
Max @ 150F for 7
Days
 Compressive
Strength: 30.6 psi,
ASTM D 1621-73,
Proc A
Misc.
E.
PIPE INSULATION APPLICATION
1.
Schedule
TEMP
35 to 55
100 TO
250
250 TO
350
350 TO
900
SERVICE
1/2 to 2
PIPE SIZE
2 1/2 to 4 5 to 10
12 to 18
GF (P)
FEC
1 1/2
3/4
1 1/2
3/4
2
---
2
---
1
1
2
2 1/2
3/4
1 1/2
1 1/2
1 1/2
1 1/2
2
--1 1/2
1 1/2
1 1/2
1 1/2
2 1/2
--2 1/2
2
2
2
3 1/2
--3
2 1/2
2 1/2
2 1/2
4
HPS
CR
BBD
BFW
EE
GF(P),
FEC, CG,
CS
SAME
SAME
SAME
SAME
SAME
GF(P),CG
CS
SAME
SAME
SAME
SAME
CG, CS
2
1 1/2
1 1/2
1 1/2
3
2 1/2
2
2
2
3 1/2
3
3
3
3
4
3 1/2
3 1/2
3 1/2
3 1/2
5
BF
SAME
4
4
CHS & R
DCW
CCD
DFD
RSD
HWS & R
LPS
CR
BBD
BFW
DHWS&R
HWS & R
MECHANICAL INSULATION
INSUL
15250 - D5
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
F.
DUCT INSULATION APPLICATION
1.
Schedule
SERVICE
INSULATION
THICKNESS
Interior Concealed HVAC
Supply and Return Ducts and
Plenums
Interior Exposed HVAC Supply
and Return Ducts and Plenums
Exterior Concealed HVAC
Supply and Return Ducts and
Plenums
GFBL
1 1/2
VAPOR
FIELD
BARRIER APPLIED
JACKET
YES
NO
GFB
GFP
GFB
GFP
1 1/2
YES
NO
3
YES
NO
FEC
GFB
GFP
2
3
YES
YES
NO
YES
Interior Exposed HVAC Supply
Fans, AHU’s, Casings, &
Plenums
Interior Exposed Range Hood
Exhaust Ducts
GFB
2
YES
NO
CS
NO
SS
Interior Concealed Range Hood
Exhaust Ducts
CS
NO
NO
Interior Exposed Oven and
Dishwasher Exhaust Ducts
Interior Concealed Oven and
Dishwasher Exhaust Ducts
GFB
CS
GFB
THKNS
for 2 HR
Rating
THKNS
for 2 HR
Rating
2
NO
SS
2
NO
NO
Exterior Exposed, HVAC
Supply and Return Ducts and
Plenums
G.
EQUIPMENT INSULATION APPLICATION
1.
Schedule
SERVICE
INSULATION
THICKNESS
Interior Exposed DCW
Equipment, Tanks, & Pumps
GFB
1
VAPOR
FIELD
BARRIER APPLIED
JACKET
YES
P/K/A/SS
CG
1 1/2
YES
MECHANICAL INSULATION
P/K/A/SS
15250 - D6
5/18/2000
Design Guidelines and Standards Manual
University of Cincinnati
Interior Exposed DHW
Equipment, Tanks, & Pumps
Interior Exposed Low Temp
Brine Equipment, Tanks, Pumps
& Heat Exchangers (0 to 34 F)
Interior Exposed Chilled and
Dual-Temp Water Equip.,
Tanks, Pumps, and Heat
Exchangers (35 to 100 F)
Interior Exposed Refrigerated
Drinking Water Equipment,
Tanks, Pumps, and Heat
Exchangers
Interior Exposed Heating Water
Equip, Tanks, Pumps and Heat
Exchangers (100 to 250 F)
Interior Exposed High-Temp
Heating Water Equip, Tanks,
Pumps and HX’s (250 to 350
F)
Interior Exposed Boiler Flues
and Breeching
FEC
GFBL
3/4
2
YES
NO
NO
A/SS
CG (BLK)
CS (BLK)
GFBL
2
2
4
NO
NO
YES
A/SS
A/SS
A/SS
CG (BLK)
GFBL
5
2 1/2
YES
YES
A/SS
A/SS
CG (BLK)
GFBL
3
2
YES
YES
A/SS
P
CG
GFB or
GFBL
2
2
YES
NO
P
A/SS
CG (BLK)
CS
GFB
GFBL
2
2
4
NO
NO
NO
A/SS
A/SS
A/SS
CG (BLK)
CS (BLK)
CS (BLK)
5
4
4
NO
NO
NO
A/SS
A/SS
A/SS
END
MECHANICAL INSULATION
15250 - D7
5/18/2000