form 105.17-EG1 (915)
COILs
STEAM
LD19740
WATER
LD19739
direct expansion
DUCT BOOSTER
LD19733
LD19741
FORM 105.17-EG1 (915)
Steam, Water and DX Coil Nomenclature
FINS
1
2
3
4
B
C
006
12
TUBES
5
6
96.50 X 032
7
8
9
10
11
12
13
14
15
G
12R
C
020
S
035
W
*
*
(1) Fin Surface:
B = Free Flow (1/2” Y.L.)
C = Turbo Fin (5/8” Y.L.)
D = MP (1” Steam)
F = Flat Surface Fin (5/8” M.P.)
M = Miller-Picking (5/8” M.P.)
(2) Fin Material:
A = Aluminum
C = Copper
(9) Tube Diameter:
REFER
BELOW
B = 1/2”
C = 5/8”
D = 1”
(10) Tube Wall Thickness:
016, 020, 025, 032, 035, 049
(11) Return Bends:
(3) Fin Thickness (in.):
Aluminum: 006, 008, 010
Copper: 006, 010
(12) Return Bend Wall Thickness (Min.):
(4) Fins Per Inch:
06, 08, 09, 10, 11, 12, 13, 14
(5) Fin Height:
Fin Surface
B
C
D
F
M
B = Brazed
C = Cleanable
S = Standard
7.50” - 95.00”
9.25” - 96.50”
9.00” - 96.00”
9.00” - 96.00”
9.00” - 96.00”
(6) Fin Length:
006-168
000, 016, 020, 025, 032, 035, 049
(13) Heat Transfer Media:
D = Dist Stm (Has Inner Tubes)
S = Std Stm (No Inner Tubes)
W = Water
X = DX
P = Propylene Glycol
E = Ethylene Glycol
C = Condensor
(14) Orientation:
H = Horizontal
V = Vertical
* If Field (13) = X, Field (14) is not used
(7) Casing Material
G = Galvanized
S = Stainless
(15) “Tubes Per Circuit” or “# of Feeds”
G = Galvanized
S = Stainless
(8) Rows Deep:
Example:
12
R
01
02
03
04
05
06
08
10
12
If Field (13) = D, S, W, P, E, C
“Tubes Per Circuit”
01, 02, 04, 06, 08, 10, 12,
14, 16
If Field (13) = X
“# of Feeds”
002 thru 099
Approvals
B - Cooling/Heating
C - Cooling
H - Heating
R - Heat Recovery
NOTES:
1. Correct nomenclature string is 55 characters long.
2
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
HEADERS & CONNECTORS
other
16
17
18
19
20
21
22
23
24
25
26
27
28
29
L
C
S
01
B
M
2.00
08.00
A
P
A
10
S
S
(25) Coil Coating:
(16) Hand:
E = Electro-Fin
C = Electro-Fin - UV
H = Heresite
N = None
O = Other
P = Phenolic
L = Left
R = Right
(17) Header Material:
B = Brass
C = Copper
(26) Customer:
(18) Connector Side:
A = AirPak
C = Custom
E = ECO2
F = PEF Industries
L = Loose
P - CurbPak
R = Replacement
W = Warranty
X = Solution XT
O = Opposite
S = Same
(19) # of Supply Conn:
(Water and Steam)
01 or 02
(DX Distributor)
01, 02, or 04
(27) Ship Cycle:
(20) Connector Material:
01 = 24 Hrs
02 = 43 Hrs
03 = 3 Days
05 = 5 Days
10 = 10 Days
15 = 15 Days
20 = 20 Days
99 = Std
B = Brass
C = Copper
S = Steel
(21) Connector Type:
F = FPT
M = MPT
S = Sweat
G = Grooved
(28) Design (Internal Use Only):
E = Engineer
S = Standard
(22) Connector Diameter:
1.00, 1.25, 1.50, 2.00, 2.50, 3.00, 4.00
(29) Casing Style:
Suction Diameter (DX)
1.00 = 1.125”
1.50 = 1.625”
2.00 = 2.125”
Solution:
G = 3/4” x 1-1/2” (Gasket)
P = 1-1/4” Sloped to 3/4”
x 1-1/4” (Hor. Steam)
Q = 3/4” x 1-1/4” (Vertical Steam
T = 3/4” x 1-1/2”
(23) Conn. Length/Vertical Offset:
Other:
E = Engineer (Custom Casing)
F = 0” x 1-1/2”
H = 3/4” x 1-1/2”
K = 7/8” x 1-1/2”
M = Monterrey Casing
R = 1-3/4” Sloped to
1-1/4” x 1-1/2”
S = 1-1/2” x 1-1/2”
Conn. Length: 05. to 24.
Vertical Offset: .00 (Stan.) to .24
(24) Rotation (Supply/Return)
A = 0.0
B = (+) 90, (-) 90
C = (-) 90, (-) 90
D = (+) 90,0 (DX Coils)
(-) = Rotated Against Air
(+) = Rotated in Dir of Air
Example: S = 1-1/2” x 1-1/2”
Casing Style
JOHNSON CONTROLS
End Sheet
Top/BTM Channel
3
FORM 105.17-EG1 (915)
Booster Coils Nomenclature
5/8” Booster
1
2
3
4
6
6
7
8
9
10
11
12
M
A
006
12
09
09
G
01
C
020
035
02
(1) Fin Surface:
M = Miller-Picking (5/8” M.P.)
(5) Fin Height:
06, 09, 12, 15, 18
(2) Fin Material:
A = Aluminum
C = 5/8”
(6) Fin Length:
06, 09, 12, 15, 18, 21, 24, 27,
30, 33, 36
(3) Fin Thickness (in.):
Aluminum: 006, 010
G = Galvanized
(8) Rows Deep:
01, 02
15
16
S
075
S
S
(15) Design (Internal Use Only):
E = Engineer
S = Standard
(16) Casing Style:
(14) Connector Diameter:
500, 625, 750, 875
(12) Number of Circuits:
01, 02
14
(13) Connector Type:
(11) Return Bend Wall
Thickness:
035
13
F = FPT
S = Sweat
(10) Tube Wall Thickness:
020, 025, 035
(7) Casing Material
(4) Fins Per Inch:
08, 09, 10, 11, 12, 13, 14
(9) Tube Diameter:
F = Flanged
S = Slip & Drive
NOTES:
1. Fields (9), (12) and (13) determine Field (14):
C&01&S
C&02&S
4
625C&01&F
875C&02&F
500
750
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
Table Of Contents
Water and Glycol Coils – Chilled Water.................................................................................................7
Direct Expansion Coils..................................................................................................................................13
Steam Coils.........................................................................................................................................................19
Booster Coils....................................................................................................................................................25
List of Figures
Figure 1 - Water Coils Diagram������������������������������������������������������������������������������������������������������������������10
Figure 2 - Direct Expansion Coils Diagram�������������������������������������������������������������������������������������������16
Figure 3 - Direct Expansion Coils Piping Arrangements����������������������������������������������������������������� 17
Figure 4 - Steam Coils Diagram������������������������������������������������������������������������������������������������������������������22
Figure 5 - Steam Coils Piping Arrangements���������������������������������������������������������������������������������������23
Figure 6 - Booster Coil Diagram���������������������������������������������������������������������������������������������������������������27
JOHNSON CONTROLS
5
FORM 105.17-EG1 (915)
This Page Intentionally Left Blank.
6
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
Water and Glycol Coils – Chilled Water
Mechanical Specifications
Primary Surface – 1/2” or 5/8” OD round seamless copper tubes arranged in a staggered
tube pattern with respect to airflow.
Secondary Surface – Fin edges are die-formed and work-hardened to initiate immediate
turbulence and to strengthen the fin edge. Tubes are mechanically expanded providing
the optimum tube-to-fin bond.
Casing – The top and bottom channels and end sheets are constructed of heavy galvanized (or stainless) steel. Mounting holes, evenly spaced around the perimeter of the casing, are provided for attaching to ductwork or plenum chamber. Tube supports furnished
with coils having larger than 62” fin length.
Headers – Inlet and outlet headers are constructed of hard-drawn seamless copper (or
red brass) tubing with male pipe threaded (or grooved) connections of red brass pipe silver brazed to headers. All supply and return connections are on the same end regardless
of circuit arrangements or coil depth. Vent and drain fittings are conveniently located on
the supply and return connections.
Return Bends – Constructed of (1/2” .032” (.020”)) & (5/8” .35” (.025”)) OD round seamless copper tubing with a uniform flow area throughout the radius of the bend, silver
brazed to tubes.
LD19739
JOHNSON CONTROLS
7
FORM 105.17-EG1 (915)
Water and Glycol Coils – Chilled Water (Cont’d)
Application Recommendations
1. Glycol coils can be selected and rated for both propylene and ethylene glycol. In glycol coils, the heat transfer media contains up to 60% glycol, with the remainder being
water. Refer to the coil selection program to select and rate a glycol coil.
2. Piping arrangement must provide for a balanced flow in multiple coil installations.
3. Casings should be installed level to ensure proper venting and draining. A spirit level
is recommended for this procedure.
4. Connect the water supply to the header connection on the LEAVING AIR side of the
coil, to achieve counterflow of water and air. Return water will be connected to the
other header connection. Locating dimensions for connections are common to all
YORK water coils.
5. Coils used in dehumidifying duty and banked two or more high must have a drain
trough installed on each coil. Tubing should be provided to drain the upper pans into
the main drain pan. Lower coils should have a drain pan that extends beyond the
casing and headers (a minimum of 10 inches beyond the leaving face of the coil).
The drain pan must be elevated to provide free drainage of condensate and to provide ample space for installation of a trap in the drain line, to overcome pressure in
the coil casing.
6. Positive coil freeze protection must be used in installations where any part of the water coil is subjected to air temperatures of 32°F or lower. This may be accomplished
by use of a suitable antifreeze solution. If the coil is not in use, complete drainage
of the water, assisted by adequate blowout with compressed air, is recommended.
7. Connecting piping, particularly on large coil banks, must be supported independently
of coil headers. Provisions should be made for piping expansion, with anchor points
near coil headers. Although the YORK heavy copper (or brass) headers have ample
strength and greater flexibility than cast headers, excessive piping movement would
force deformation of the tubes at the end sheet.
8. When coil surfaces are sprayed to provide winter humidification, provisions must be
made for blow-down or water treatment to avoid buildup of chemical deposits on coil
fins.
9. Closed water circulating systems must have an expansion tank and/or water pressure relief valve to avoid exceeding coil design pressure due to thermal expansion.
10. Water flow may be controlled by a variety of control valves. Follow the recommendations of the control manufacturer.
11. Coils will meet performance ratings only if the airflow is uniform over the face of
the coil. High velocity spots may cause moisture carry-over. Low velocity areas will
not deliver the published rating. Duct and casing design must provide uniform face
velocity. The entering side must produce a smooth transition from any high velocity
effects. Fans blowing though the coil must have transition or baffling (as in typical
multi-zone units). The leaving side of the coil is less critical, but no area may be
blocked by the casing or other elements (e.g. DWDI fans with scroll near the leaving
coil face).
8
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
GUIDE SPECIFICATIONS
Contractor shall furnish and install, where indicated on the plans, YORK coils as described in the following specifications:
Primary surface – shall be 1/2” & 5/8” in OD copper tube, of staggered configuration.
Tubes shall be mandrel expanded to ensure a tight fin bond. Return bends shall be dieformed and brazed to tubes. Alternatively, hairpin tubes can be used.
Extended surface – shall consist of die-formed continuous aluminum fins with formed
channels and surface treatment to minimize moisture carryover. Fins shall have fully-drawn collars to accurately space fins, and to form a protective sheath for the primary
surface.
A structural galvanized (or stainless) steel casing – shall protect coil during shipment
and provide for stacking of coils. Tube sheets on each end shall have drawn collars to
support tubes. A tube coil support shall be provided on coils with a finned length of more
than 62 inches; two tube supports above 100 inches long; three tube supports above 141
inches long. Casing channels shall be free-draining, without depressions to collect moisture and contaminants or block fin area.
water
Water coil capacities and pressure drops – shall be certified in accordance with AHRI
Standard 410. All coils must be circuited to operate at design loading with water velocity
within the AHRI range of certified rating conditions.
Headers – shall be of heavy seamless copper (or red brass) tubing, silver-brazed to
tubes. Connections shall be of red brass (or steel), with male pipe threads (or grooved
connection), silver-brazed to headers. Provide a 1/4” FPT, plugged vent or drain tap on
each connection. All coils must have same-end connections, regardless of number of
rows deep.
Circuiting – Coils shall be circuited, and have connections arranged, for counterflow of air and water with supply on bottom and return on top of coil headers.
Coil circuiting shall provide for design water velocity in tubes without exceeding total water
pressure drops in schedule.
Test Parameters – Completed coil, including headers, connections, and return bends,
shall be tested with 325 pounds compressed air under water. Coils shall be designed for
operation at 325 PSIG design working pressure and up to 250°F.
JOHNSON CONTROLS
9
FORM 105.17-EG1 (915)
Water and Glycol Coils – Chilled Water (Cont’d)
0.375"
(TYP)
1.50"
(TYP)
1-4
ROWS
DEEP
12.63
10.00
7.38
‘A’
15.25
8
10
17.63
4.
FIN LENGTH
(6" TO 168")
SIDE VIEW
2.00
1.50
1.25
2.625”
2.125”
1.625”
1.625”
2.38”
2.13”
1.88”
1.63”
1.50”
6.47”
5.44”
5.19”
4.94”
4.69”
4.69”
5/8”
6.44”
4.94”
4.69”
4.44”
4.19”
4.19”
1/2”
‘C’ (MAX)
2.50
3.125”
3.00”
‘B’
3.00
4.125”
CONN. HEADER
DIA.
DIA.
0.75"
(TYP)
4.00”
5/8” tube - 6 thru 32
3. Tubes high: 1/2” tube - 6 thru 38
2.
NOTES:
1. Standard coils always use 7.00” connectors
12
5, 6
1/2" - 1.75" (MAX)
5/8" - 2.25" (MAX)
0.188"
(6.00" CENTER TO CENTER)
FIN HEIGHT
(SEE NOTE 2)
5. Dimensions: inches +/- 1/4” (overall)
'C'
ROWS
SEE NOTE 1
CONNECTOR
DIA.
ALL
10
8
1.25” to 3.00”
4.00”
12
1/2”
5/8”
1/2”
5/8”
1/2”
ALL
TUBE
DIA.
'B'
(TYP)
5/8”
'G'
(TYP)
'A'
RETURN
3.41”
2.42”
3.30”
2.42”
3.06”
1.75”
‘G’
END VIEW
SUPPLY
2.31”
AIRFLOW
LH SHOWN
RH OPPOSITE
JOHNSON CONTROLS
10
0.375"
(TYP)
FIGURE 1 - WATER COILS DIAGRAM
LD19734
FORM 105.17-EG1 (915)
0.375"
(TYP)
1.50"
(TYP)
SIDE VIEW
1/2" - 1.75" (MAX)
5/8" - 2.25" (MAX)
ෘ0.188"
(6.00" CENTER TO CENTER)
FIN LENGTH
(6" TO 168")
FIN HEIGHT
(SEE TABLE)
FH2
FH1
'C'
SEE NOTE 1
'G'
(TYP)
RETURN
END VIEW
'A'
SUPPLY
5. DIMENSIONS: INCHES +/- 1/4” (OVERALL)
LD19735
1-4
rows
deep
10.00”
7.38”
‘a’
15.25”
12.63”
17.63”
8
10
5, 6
12
1.625”
1.625”
1.63”
1.50”
4.94”
4.69”
4.69”
5/8”
4.94”
4.69”
4.44”
4.19”
4.19”
1/2”
‘c’ (max)
1.25”
1.88”
5.19”
‘b’
1.50”
2.125”
5.44”
conn. header
dia.
dia.
2.00”
2.13”
‘g’
2.38”
1.75”
2.625”
3.06”
3.125”
tube
dia.
2.42”
2.50”
1/2”
ALL
3.30”
3.00”
5/8”
2.42”
6.44”
8
ALL
1/2”
3.41”
6.47”
8
5/8”
2.31”
3.00”
10
1/2”
4.125”
10
5/8”
4.00”
12
connector
rows
dia.
1.25”
4.00”
12
fh2
34
tubes
high
27.25”
fh1
27.25”
24.25”
fh2
5/8” coils
fh1
-
1/2” coils
tubes
high
-
-
30.25”
34
-
27.25”
-
30.25”
-
27.25”
40
-
30.25”
42
-
36
25.00” 25.00”
44
38
27.50” 25.00”
46
40
27.50” 27.50”
-
42
30.00” 27.50”
-
-
44
48
-
46
30.00” 30.00”
36
48
38
LH SHOWN
RH OPPOSITE
AIRFLOW
'B'
(TYP)
4. APPLY BUTYL TAPE TO ALL 4 CORNERS OF COIL BETWEEN ENDSHEETS AND CHANNELS IF ‘G’
CASING IS SPECIFIED.
3. TUBES HIGH: 1/2” TUBE - 40 THRU 48.
5/8” TUBE - 34 THRU 40.
2. FOR FIN INFO, SEE DWG: 1/2” = (063-70062-000); 5/8” = (063-33914-000).
NOTES:
1. SOLUTION COILS ALWAYS USE 7.00” CONNECTIONS.
0.75"
(TYP)
11
JOHNSON CONTROLS
0.375"
(TYP)
figURE 1 – water coils diagram (CONT’d)
FORM 105.17-EG1 (915)
Water and Glycol Coils – Chilled Water (Cont’d)
0.375"
(TYP)
1.50"
(TYP)
FH1
tubes high
-
-
-
42
SIDE VIEW
FH2
FH1
50
'C'
52
SEE NOTE 1
54
56
'G'
(TYP)
'A'
60
END VIEW
58
AIRFLOW
64
LD19736
LH SHOWN
RH OPPOSITE
62
66
12
10
8
5, 6
1-4
rows
deep
17.63”
15.25”
12.63”
10.00”
7.38”
‘a’
1.25”
2.125”
1.625”
1.625”
2.13”
1.88”
1.63”
1.50”
4.69”
4.44”
4.19”
4.19”
5/8”
5.19”
4.94”
4.69”
4.69”
1/2”
‘c’ (max)
1.50”
2.625”
‘b’
2.00”
conn. header
dia.
dia.
2.50”
5.44”
‘g’
6.47”
1.75”
4.94”
3.06”
6.44”
ALL
tube
dia.
2.42”
2.38”
1/2”
3.30”
3.00”
5/8”
2.42”
3.125”
1/2”
3.41”
4.125”
5/8”
3.00”
1/2”
76
2.31”
74
5/8”
4.00”
8
10
12
72
ALL
connector
rows
dia.
70
1.25” to 3.00”
4.00”
68
-
-
-
-
-
-
-
48
-
46
-
-
44
32.50” 32.50” 35.00” 35.00” 37.50” 37.50” 40.00” 40.00” 42.50” 42.50” 45.00” 45.00” 47.50” 47.50”
-
-
-
-
-
-
-
-
-
30.00” 32.50” 32.50” 35.00” 35.00” 37.50” 37.50” 40.00” 40.00” 42.50” 42.50” 45.00” 45.00” 47.50”
34.00” 34.00” 36.50” 36.50” 39.00” 39.00” 41.50” 41.50” 44.00” 44.00” 46.50” 46.50” 49.00” 49.00”
FH1 33.25” 33.25” 36.25” 36.25” 39.25” 39.25” 42.25” 42.25” 45.25” 45.25” 48.25” 48.25”
-
-
FH2 30.25” 33.25” 33.25” 36.25” 36.25” 39.25” 39.25” 42.25” 42.25” 45.25” 45.25” 48.25”
-
-
24.75” 34.75” 37.75” 37.75” 40.75” 40.75” 43.75” 43.75” 46.75” 46.75” 49.75” 49.75”
31.50” 34.00” 34.00” 36.50” 36.50” 39.00” 39.00” 41.50” 41.50” 44.00” 44.00” 46.50” 46.50” 49.00”
‘D’
-
'E'
-
-
RETURN
-
-
RETURN
-
-
SUPPLY
-
-
SUPPLY
-
-
'D'
-
-
“B”
(TYP)
31.75” 34.75” 34.75” 37.75” 37.75” 40.75” 40.75” 43.75” 43.75” 46.75” 46.75” 49.75”
-
‘D’
1/2" - 1.75" (MAX)
5/8" - 2.25" (MAX)
ෘ 0.188"
(6.00" CENTER TO CENTER)
FIN LENGTH
(6" TO 168")
FIN HEIGHT
(SEE TABLE)
‘E’
‘E’
FH2
1/2”
COILS
5/8”
COILS
0.75"
(TYP)
JOHNSON CONTROLS
12
0.375"
(TYP)
figURE 1 – water coils diagram (CONT’d)
FORM 105.17-EG1 (915)
Direct Expansion Coils
Mechanical Specifications
Primary Surface – 1/2” & 5/8” OD round seamless copper tubes arranged in a staggered
tube pattern in respect to air flow.
Secondary Surface – TURBOFIN, with directional guide channels to ensure maximum
air to fin contact, is constructed of aluminum or copper. Fin edges are die-formed and
work hardened to initiate immediate turbulence and to strengthen the fin edge. Tubes are
mechanically expanded providing the optimum tube-to-fin bond.
Casing – The top and bottom channels and end sheets are constructed of heavy galvanized (or stainless) steel. Mounting holes, evenly spaced around the perimeter of the
casing, are provided for attaching to ductwork or plenum chamber. Tube supports shall be
provided for coils with greater than 62” fin length.
Return Bends – OD round seamless copper tubing with a uniform flow area throughout
the radius of the bend, silver brazed to tubes. Alternatively, hairpin tubes can be used.
Headers and Distributors – Constructed of heavy seamless copper tubing, silver brazed
to tubes. The distributor is of the Venturi type providing even distribution of refrigerant. All
piping connections are of the male solder type, extended so field connection can be made
outside the unit casing.
Dehydrated and Sealed – Coil assembly is dehydrated to minimal moisture content and
sealed under pressure for shipment.
LD19741
JOHNSON CONTROLS
13
FORM 105.17-EG1 (915)
Direct Expansion Coils (Cont’d)
application recommendations
1. Direct expansions coils should be installed with tubes reasonably level.
2. Each coil must be installed with suction header nearest to entering air face of coil,
with suction connection at lower end. Orientation of refrigerant distributor is not critical but feed tubes must not be kinked or bent in a nonuniform manner.
3. An individual expansion device must be provided for each section of coil. If suctions
are paralleled as in a stacked coil bank, piping arrangement must avoid liquid from
one suction line reaching another (affecting expansion valve operation).
4. Thermostatic expansion valves should be equipped with external equalizers, field
connected to suction line. Size valve in accordance with manufacturer’s recommendation, with pressure drop appropriate to refrigerant in use and inlet liquid conditions.
Do not oversize valve, but design balances of system to assure adequate valve inlet
pressure for required capacity at below peak conditions. Follow valve manufacturer’s
instructions on location of thermostatic bulb. Proper expansion valve operation is
necessary for full coil capacity.
5. Continued operation at below freezing suction temperature may cause frosting at
coil. Therefore, design at below 32°F suction is not recommended. Even if full load
operation is selected for a “safe” temperature, system analysis is required to check
for lower suction temperature at light load conditions. Suction-pressure-controlled
hot gas bypass valves are available by various control manufacturers to maintain an
adequate minimum temperature.
6. The venturi type distributor furnished with YORK DX coils is suitable for field application of a hot gas bypass valve. Connection may be made through a tee installed
in the field between the expansion valve and the distributor. Balance of system and
control adjustments must ensure compressor cooling and avoid excessive compressor cycling.
7. YORK DX coils are suitable for use with other refrigerants generally similar to R-410A.
Refer to factory for specific applications.
8. Coils used in dehumidifying duty and banked two or more high must have a drain
trough installed on each upper coil. Tubing should be provided to drain the upper
pans into the main drain pan. Lower coils should have a drain pan that extends beyond the casing and headers (a minimum of 10 inches beyond the leaving face of the
coil). The drain pan must be elevated to provide free drainage of condensate and to
provide ample space for installation of a trap in the drain line to overcome pressure
in the coil casing.
9. Coils will meet performance ratings only if the airflow is uniform over the face of
the coil. High velocity spots may cause moisture carry-over. Low velocity areas will
not deliver the publishing rating. Duct and casing design must provide uniform face
velocity. The entering side must produce a smooth transition from any high velocity
effects. Fans blowing through the coil must have a long transition or baffling (as in
typical multi-zone units). The leaving side of the coil is less critical, but no area may
be blocked by the casing or other elements (e.g. DWDI fans with scroll near the
leaving coil face.)
14
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
guide specifications
General – Contractor shall furnish and install Direct Expansion coils, manufactured by
YORK to meet the performance requirements set forth in the schedule. Coils shall be
available for R-410A.
Certification – All coils shall have performance certified in accordance with AHRI Standard 410.
Tubes – All coils shall have 1/2” & 5/8” OD seamless copper tube arranged in a staggered
pattern perpendicular to the air flow. The copper tubes shall be firmly bonded to the fins
by mechanical expansion.
Headers and Distributors – All headers shall be of heavy seamless copper tubing, as
dictated by the schedule, and shall be silver brazed to the tubes. The refrigerant distributor
shall be of the venturi type for even distribution of refrigerant and low-pressure drop, sized
for the required duty and silver brazed to the distributor tubes. All piping connections shall
be of a male sweat type. The distributor tubes shall be of 1/4” or 5/16” round seamless
copper sized for the required duty and of equal length for maximum distributor efficiency.
Fins – Aluminum fins shall be available in either .006” (or .008”, .010”) thickness and
copper fins shall be available in .006” (or .008”) thickness. All shall have a die-formed
corrugation with guide channels to create a turbulent wiping action behind the tubes and
minimize moisture carry-over. Fins shall have fully drawn collars for accurate spacing
and to maximize fin tube contact. Fins shall be firmly bonded by mechanical expansion to
increase heat transfer and ensure reliability. Fins shall be continuous across entire width
of the coil up to 48-1/4”.
Casing – The casing shall be a full channel, die formed, mill galvanized (or stainless)
steel and provide ample shipping and stacking support for the fin bundle. Tube sheets
shall have extruded collars for tube support and to prevent damage due to expansion and
contraction of the fin bundle. Intermediate tube supports shall be provided on coils with a
fin length greater than 62”; two supports above 100”, three supports above 141”. Casing
channels shall be free draining, without depressions to prevent moisture and contaminants collection.
Face Splits – Face splits shall be available when single coil total MBH exceeds 500 MBH
or for multiple compressor applications. The minimum split section shall never be less
than 6 tubes high. Coil face splits should be of equal number of tubes to provide equal
refrigerant load splits.
Row Control – Row control shall be available by selecting two or more coils positioned
in series.
Testing and Working Pressures – All coils, including headers, return bends, and distributors, shall be designed to conform to the UL 207 (Safety Code for Mechanical Refrigeration) when operating with a refrigerant pressure not exceeding 325 PSIG and shall be
tested with 325 PSIG compressed air under water.
JOHNSON CONTROLS
15
FORM 105.17-EG1 (915)
Direct Expansion Coils (Cont’d)
0.375"
(TYP)
1.50"
(TYP)
1/2" - 1.75" (MAX)
5/8" - 2.25" (MAX)
FIN LENGTH
(6" TO 168")
0.75"
(TYP)
rows
deep
10.00
7.38
‘a’
1.50
1.00
1.63
1.50
1.63”
1.50”
'C'
SEE NOTE 1
'A'
1.75"
SUPPLY
RETURN
15.25
2.00
1.88
1.88”
'B'
AIRFLOW
LH SHOWN
RH OPPOSITE
4.44
4.19
4.19
1/2”
tube
m max
4.94”
4.69”
4.69”
5/8”
tube
END VIEW
1-4
12.63
10
17.63
‘b’
8
5, 6
conn. header
dia.
dia.
CENTER
OF COIL
12
4. Apply butyl tape to all 4 corners of coil between endsheets and channels if “G” casing is specified.
5/8” tube - 6 thru 32
3. Tubes high: 1/2” tube - 6 thru 38
2. For fin info, see DWG: 1/2” = (063-70062-000); 5/8” = (063-33914-000)
NOTES:
1. Standard coils always use 7.00” connectors
SIDE VIEW
ෘ 0.188"
(6.00" CENTER TO CENTER)
FIN HEIGHT
(SEE NOTE 2)
5. Dimensions: inches +/- 1/4” (overall)
JOHNSON CONTROLS
16
0.375"
(TYP)
LD19737
Figure 2 - Direct Expansion Coils Diagram
FORM 105.17-EG1 (915)
FROM HOT GAS LINE IN
AIR-COOLED CONDENSING UNIT
PITCH 1/2" PER 10" IN DIRECTION OF FLOW
BALL VALVE
LIQUID
LINE DRIER
BALL VALVE
THERMAL
EXPANSION LIQUID LINE
SOLENOID VALVE
VALVE
BALL VALVE
SIGHT GLASS
TXV Equalizer
Line
Distributed by YORK
SPORLAN
ASC HOT GAS
FITTING
TO AIR-COOLED
CONDENSING UNIT
PITCH 1/2" PER 10"
IN DIRECTION OF FLOW
THERMAL SUCTION LINE
EXPANSION LIQUID LINE
VALVE
SOLENOID VALVE
SIGHT GLASS
TXV Equalizer
Line
Distributed by YORK
SUCTION LINE
1-7/8"
Construct suction line
P-trap from street ells
to maintain minimum
trap volume.
45°
Mount thermal expansion valve bulb on side of
horizontal run of suction line as shown. Insulate
bulb / line after clamping bulb to line.
Pitch 1/2" per 10"
in direction of flow
LD05171
Figure 3 - Direct Expansion Coils Piping Arrangements
JOHNSON CONTROLS
17
FORM 105.17-EG1 (915)
LD04885
LD04884
FULL FACE
Typically used on systems less than
20 tons.
18
INTERLACED
Typically used on large systems
with two unloading steps.
LD04886
INTERLACED FACE SPLIT
Used on systems with multiple
unloading steps.
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
Steam Coils
Mechanical Specifications
Primary Surface – 1 inch round seamless copper tubes with 5/8” OD interior steam distributing tubes - one row deep. Distance positioned on a 3” center.
Secondary Surface – Constructed of aluminum. Fin edges are die-formed and work-hardened to initiate immediate turbulence and to strengthen the fin edge. Tubes are mechanically expanded providing the optimum tube-to-fin bond.
Casing – The top and bottom channels and end sheets are constructed of heavy gauge
galvanized (or stainless) steel. The coil is pitched in the casing from the supply to the
return end - in both directions to provide condensate drainage. Mounting holes, evenly
spaced around the perimeter of the casing, are provided for attaching to ductwork or plenum chamber. Tube supports are furnished with coils having longer than a 59” fin length.
Headers – Inlet and outlet headers are constructed of hard-drawn seamless copper tubing with male pipe threaded connections of red brass (or copper), silver brazed.
LD19740
JOHNSON CONTROLS
19
FORM 105.17-EG1 (915)
Steam Coils (Cont’d)
application recommendations
Piping and Supports
1. Piping must be supported independently of the coil. In addition, swing joints must be
used to avoid placing expansion stresses on coil headers. Direct piping hook-ups
can cause damage to the coil.
2. Do not bush or reduce pipe size at coil return. Use full return size pipe to bottom of
dirt pocket. Supply may be reduced at coil connection if desired.
3. Install coil casing level with return down. YORK coils are pitched in the casing for
either horizontal or vertical air flow, thus ensuring condensate drainage.
4. Coils must be sufficiently elevated to allow a 12 inch minimum drop to the trap. A
greater drop than 12 inches is required for freeze protection. The return line should
be located below the trap.
5. Casing is rigidly constructed and is structurally adequate for stacking coils by direct
fastening of end sheets.
Control of Steam Supply
1. Continuous steam supply ensures long coil life and minimizes trapping, venting and
freezing problems. Coil output can be varied by controlling air flow.
2. Rapid cycling of the modulating steam supply or frequent on-off steam control results in repeated thermal and piping stresses which will shorten coil life. These can
normally be avoided by following recommendations of the control manufacturer and
by proper adjustment and maintenance of controls. Modulating steam control valves
must not be oversized – select carefully. Substantial supply pressure variation will
require the installation of a pressure reducing valve ahead of the automatic valve.
3. Light load operating with modulated steam supply is improved by a vacuum breaker
check valve. An open relief line to the atmosphere from the return line near the coil is
desirable, except on vacuum systems.
4. With modulated steam supply, it is not practical to lift condensate to an overhead
return. Locate coil well above return or provide condensate unit or boiler return trap
below coil.
5. Individual control valves are required on coils installed in series. When a modulating
steam valve supplied two or more coils in paralleled air flow, piping must provide for
uniform steam distribution.
Steam Traps
1. Float and thermostatic (F&T) traps are recommended for all low or medium pressure
applications. Use thermostatic traps only for air venting, small booster coils or for
outdoor applications where an F&T trap might be subject to freezing.
2. Size traps in accordance with manufacturers’ recommendations (usually several
times steady-state steam flow). Use actual operating conditions (coil pressure vs.
return pressure) for trap selection.
20
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
3. It is preferable to provide an individual trap for each coil but a single trap may be used
for coils operating in parallel air flow. Coils in series air flow must have individual
traps.
4. Locate the trap at least 12 inches below coil return connection. Do not attempt to lift
condensate with modulated steam supply.
Freezing Conditions
1. Outside air and return air must be thoroughly mixed before entering the coil. Freezing
air entering only part of the coil creates a greater potential for freezing than uniform
distribution.
2. Coil in series air flow must have individual control with space between coils for sensing devices if required.
Water Treatment
Any copper tube coils may be attacked by acid condensate. Boiler water treatment practice should include consideration of CO2 removal.
guide specificationS
General – Contractor shall furnish and install, where indicated on the plans, YORK steam
coils as described in the following specifications.
Certification – Steam coil capacities and pressure drops shall be certified in accordance
with ARI Standard 410.
Tubes – All coils shall have 1” OD condensate tube with a concentric 5/8” OD steam distributing tube. Tubes shall be seamless copper type, mandrel expanded to form fin bond
and provide burnished, work-hardened interior surface.
Headers – All headers shall be of heavy seamless copper tubing, silver brazed to tubes.
Connections shall be of red brass (or copper), with male pipe threads, silver brazed to
headers.
Fins – Aluminum fins shall have a die-formed corrugation with guide channels to create
a turbulent wiping action behind the tubes and minimize moisture carry-over. Fins shall
have fully drawn collars for accurate spacing and to maximize fin tube contact. Fins shall
be firmly bonded by mechanical expansion to increase heat transfer and ensure reliability.
Casing – The casing shall be of full channel, die formed mill galvanized (or stainless)
steel and provide ample shipping and stacking support for the fin bundle. Tube sheets
shall have extruded collars for tube support and to prevent damage due to expansion and
contraction of the fin bundle. Tube supports shall be provided on coils with a fin length
greater than 59”; two supports above 120”. The core shall be of a pitched construction
in both directions providing condensate drainage in either horizontal or vertical air-flow
applications.
Test and Working Pressures – All coils, including headers, connections and return
bends shall be tested with 325 pounds compressed air under water. Coils are typically
applied at 10 PSIG or lower, but they are designed to operate at 50 PSIG pressure and a
corresponding saturated steam temperature of 298°F.
JOHNSON CONTROLS
21
FORM 105.17-EG1 (915)
Steam Coils (Cont’d)
0.375"
(TYP)
FIN LENGTH
(6" TO 144")
ෘ 0.313"
(6.00" CENTER TO CENTER)
AIRFLOW
LH SHOWN
RH OPPOSITE
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
tubes
high
54.00”
51.00”
48.00”
45.00”
42.00”
39.00”
36.00”
33.00”
30.00”
27.00”
24.00”
21.00”
18.00”
15.00”
12.00”
9.00”
‘a’
19.50”
18.50”
17.75”
25.00”
23.50”
22.00”
20.50”
19.00”
17.50”
16.00”
14.50”
13.00”
11.50”
10.00”
8.50”
7.00”
5.50”
‘b’
39.00”
37.00”
35.00”
-
-
-
-
-
-
-
-
-
-
-
-
-
-
‘c’
5.50"
4. Dimensions: Inches +/- 1/4” (overall).
57.00”
SIDE VIEW
5. See drawing (079-21307-000) for fin info.
18
NOTES:
1. Standard steam coils are from 3 thru 20 tubes high.
6. No return bends are used. Tubes are capped.
19
41.00”
3. Channels are sloped.
2. Standard steam coils are 1 row only.
7. Coils have 2 fin pcks on 17 tubes and higher.
20.50”
'C'
17 TH & HIGHER
60.00”
0.375"
(TYP)
'A'
FIN HEIGHT
20
1.25"
8. ‘P’ casing 1.250” sloped to 0.750” channels x 1.250” end sheets.
END VIEW
Ø2.00"
(SUPPLY)
Ø2.00"
(SUPPLY)
Ø1.50"
(RETURN)
2.50"
5.00"
JOHNSON CONTROLS
22
0.75"
'B'
1.50"
LD19738
Figure 4 - Steam Coils Diagram
FORM 105.17-EG1 (915)
AIN
YM
PL
P
SU
VENT TO
ATMOSPHERE
CLOSE TO
UNIT
(NOT ON
VACUUM
SYSTEMS)
DRIP TRAP
FOR END
OR LOW
POINT OF
SUPPLY
MAIN
STEAM COIL
PITCHED IN
CASING
RN
TU IN
E
R MA
S
DIRT
POCKET
(FULL
SIZE OF
COIL
CONN.)
12" MIN.
AIN
M
LY
P
UP
VACUUM
BREAKER
1/2" CHECK
VALVE
(OPTIONAL)
STEAM COIL
PITCHED IN
SINGLE COIL
VERTICAL AIR FLOW
VACUUM
BREAKER
1/2" CHECK
VALVE
(OPTIONAL)
CASING
12" MIN.
F&T
TRAP
DIRT POCKET
(FULL SIZE OF
COIL CONN.)
IN
TU
RN
RE
MA
SYMBOLS FOR "SS" STEAM
COIL PIPING ARRANGEMENTS
GATE VALVE
STRAINER
CONTROL VALVE
(MODULATING OR
TWO POSITION)
CHECK VALVE
FLOAT AND
THERMOSTATIC
TRAP
LD04887a
Figure 5 - Steam Coils Piping Arrangements
JOHNSON CONTROLS
23
FORM 105.17-EG1 (915)
AIN
M
PLY
PLY
SUP IN
A
M
P
SU
AIR
W
FLO
AIR
W
FLO
12" MIN.
12" MIN.
12" MIN.
COILS IN SERIES
AIR FLOW MUST HAVE
INDIVIDUAL TRAPS AND
CONTROL VALVES
COILS IN PARALLEL AIR FLOW
MAY HAVE COMMON SUPPLY
AND SINGLE TRAP
(INDIVIDUAL COIL TRAP PREFERRED)
RN
U
ET
IN
MA
R
IN
N
UR
MA
T
RE
LD04887b
figure 5 - Steam Coils Piping Arrangements (Cont’d)
24
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
Booster Coils
Mechanical Specifications
Tube Core – is 5/8” OD x 0.020” (or .025”, .035”) wall straight seamless copper tubing
with brazed return bends – no hairpins. The tubes are mechanically expanded into the
fins to form a strong, permanent, high-pressure metal-to-metal contact for all heating duty
applications.
Secondary Surface – consists of die-formed aluminum fins that are accurately shaped
to provide a well-mixed airflow pattern for maximum heat transfer at a minimum air side
pressure loss. Each core tube hole is accurately sized with full fin collars that automatically and accurately space the adjacent fin and completely cover the core tubing between
each fin. The fin spacing offering was selected to a wide duty range with the minimum row
depth and air friction.
Connectors – are 1/2” FPT (or sweat) copper for all one-circuit coils and 3/4” FPT (or
sweat) copper for all two-circuit coils. Supply connection is at the bottom and the return is
at the top for all coils. The connectors are located near the tube sheet to facilitate installation in tight locations.
Circuiting – on all coils is of drainable design, having no pockets in any circuit, thus facilitating complete gravity drain when the coil is erected in the recommended position. No
mechanical devices are used to increase water turbulence that would impair in any way
whatsoever the water/condensate drainability design of these coils. The multi-circuit style
offering obsoletes the use of such internal tube turbulators. All coil circuits are of equal
length.
LD19733
JOHNSON CONTROLS
25
FORM 105.17-EG1 (915)
Booster Coils (Cont’d)
Return Bends – are accurately formed to sufficiently large radii for smooth return media
flow with minimum pressure losses. The minimum metal wall thickness at any point after
forming of the return bends is never less than the actual measured wall thickness of the
expanded coil core tubing.
Casings – fabricated from galvanized steel. The zinc-coated casings are of a unique
design that results in the ultimate in simplicity for attachment to ductwork. The casing becomes part of the ductwork by using common drive clips and “S” clips that are employed
in the sheet metal trade to connect the industry standard slip and drive receiving flanges
to the duct work. Casing styles include slip & drive and flanged.
Continuous Duty – design of the coils on hot-water duty are suitable for operation at
325 PSIG and 250°F maximum. All coils are factory leak tested at 325 PSIG air pressure
under water.
Guide Specifications
Certified in accordance with the AHRI Forced-Circulation Air-Cooling and Air-Heating
Coils Certification Program, which is based on AHRI Standard 410.
Furnish and install, where indicated on the plans, YORK Booster Coils as described in the
following specifications.
Primary Surface – shall be 5/8” OD x 0.020” (or .025”, .035”) tube constructed of seamless copper. The tubing shall be straight tube construction - no hair pin bends. Tubes shall
be permanent. Return bends shall be die-formed and brazed to tubes.
Extended surface – shall be .006” (or .010”) aluminum plate fins accurately sized and
completely die-formed to cause an air flow pattern for maximum heat transfer at the specified air side pressure loss. The tube holes are to be accurately sized with full collars
that automatically and accurately space the adjacent fin and completely cover the tubing
between each fin.
Casings – Coil casings are to be fabricated from 20 gauge galvanized steel. The casing
shall be either slip and drive or flanged type. Both top and bottom coil flange sheets are to
be firmly affixed onto the coil. Tolerance shall be + or – 1/4”.
Test Parameters
Hot Water Coils – To be suitable for 325 PSIG and 250°F maximum. Coils to be tested at
325 PSIG air pressure under water.
26
JOHNSON CONTROLS
FORM 105.17-EG1 (915)
fin
height
(inches)
tube
face
finned length (inches)
6”
9”
12”
15”
18”
21”
24”
27”
30”
33”
36”
6”
4
0.25
0.38
0.50
0.62
0.75
0.87
1.00
1.12
1.25
1.37
1.50
9”
6
-
0.56
0.75
0.93
1.12
1.31
1.50
1.68
1.87
2.06
2.25
12”
8
-
-
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
15”
10
-
-
-
1.56
1.87
2.18
2.50
2.81
3.12
3.43
3.75
18”
12
-
-
-
-
2.25
2.63
3.00
3.38
3.75
4.13
4.50
circuit rows
type
deep
1 Circuit
2 Circuits
tube face
4
6
8
10
12
1
4
6
8
10
12
2
8
12
16
20
24
2
4
6
8
10
12
A = Fin Length
TOP
TOM
BOT
B = Fin Height
LD04998
2 ROW, 1 CIRCUIT
TOP
TOM
BOT
LD04999
1 ROW, 1 CIRCUIT
TOP
TOM
BOT
Figure 6 - Booster Coil Diagram
JOHNSON CONTROLS
LD05000
2 ROW, 2 CIRCUIT
27
Printed on recycled paper
Form: 105.17-EG1 (915)
Supersedes: 105.17-EG1 (1299)
© 2015 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA
www.johnsoncontrols.com
Issued on 9/03/2015