GENERAL SPECIFICATION FOR COILS
A Division of Nailor International Inc.
CPE UNITS
Connections are male pipe thread.
Model CPE units are designed to accept coils up to a total of 8
rows deep. Coils are 1/2" OD seamless copper tube with
aluminum or copper platefins at 12 fins per inch. Water coils
features copper MPT connections and manual vents and
drains. Refrigerant coils have copper OD sweat connections.
Maximum working conditions of 200-psog, 300ºF.
ROOF TOP AIR HANDLING UNITS
5/8" OD coils over 60" in length will have supply connections at
each end.
Model RTA units are designed to facilitate 8 rows of cooling coil
and 2 rows of heating coil. Any type coil can be provided for the
units.
CENTRAL PLANT AIR CONDITIONING UNITS
– Low and Medium Pressure
Model CP units – Vertical and Horizontal Type CP, Vertical and
Horizontal Type MT.
All coils are made from seamless copper tubing with helical
wound fins. Aluminum fins have an integral spacing collar (or
foot) to ensure proper spacing. Fins are wound under tension
to provide a permanent mechanical bond. Coils with copper
fins are solder coated after fin is wound on the tubes.
Tubes are arranged in a staggered pattern with respect to
adjacent rows to provide maximum heat transfer efficiency.
Return bends are the full thickness and diameter of the coil
tubes to provide unrestricted flow and undiminished strength.
Tubes sheets and enclosing casing is fabricated of galvanized
steel. Tube sheet tube openings are die-formed with smooth
rounded collars to permit expansion and contraction without
distortion or tube damage. Intermediate supports are provided
to assure that there are no unsupported tubes over 48" in
length thus assuring a rigid coil assembly.
Coil headers are copper tubes with male pipe connections on
water standard stream coils. Steam distributing coils have
copper headers with male pipe connections. Direct expansion
refrigerant coils have copper headers with OD copper
connections.
Water cooling and heating coils and direct expansion
refrigerant coils are custom circuited to the job specifications.
Special configurations of coil arrangements (row splits and
face splits) are also available for special applications and
control requirements.
Steam Distributing – Type SD
Type SD steam coils are on row with 1" OD condensing tube
and 5/8" OD steam distributing tube. Standard fin spacing is 10
fin/in. of aluminum.
Supply and condensate headers are fabricated of cooper and
connections are copper with MPT.
Connections can be on one end (standard) or on opposite
ends.
MATERIAL SPECIFICATIONS:
Water Coils – Type W
Tubes: 5/8" OD, 1 1/2" centers, .002-.035 wall.
Fins: Aluminum, 8-12 fins/in., Copper, 6-10 fins/in., solder coated.
Headers: Copper.
Tube Sheet & Casing: Galvanized Steel. #16 U.S.
Direct Expansion – Type DX
Tubes: 5/8" OD, 1 1/2" centers.
Fins: Aluminum, 8-12 fins/in., Copper, 6-10 fins/in., solder coated.
Headers: Copper, seamless tubing.
Tube Sheet & Casing: Galvanized Steel, #16U.S. Gauge.
Refrigerant Distributor: Pressure distributors with metering
office.
Standard Steam – Type SS
Steam Distributing – Type SD
Tubes: 5/8" OD, 1 1/2" centers, .022 - .035 wall.
Fins: Aluminum, 8-12 fins/in., Copper, 6-10 fins/in., solder coated.
Headers: Copper.
Tube Sheet & Casing: Galvanized Steel, #16 U.S. Gauge.
Steam Distributing – Type SD
Tubes: 1"OD, 2 1/4" centers.
Fins: Aluminum, 10 fins/in.
Headers: Copper, seamless tubing.
Tube sheet & casing: Galvanized Steel, #16 U.S. Gauge.
All coils are pressures tested with 400-psig air under water.
Refrigerant coils are purged with dry nitrogen and sealed after
testing.
Typical Engineering Specification: All coils shall be
constructed of 5/8" OD, Type "L" or copper seamless copper
tubing with helical wound aluminum or copper fins. Coils
constructed of all-copper shall be formed from galvanized
sheet steel # 16 USS gauge. All coils shall be tested under
warm water at a pneumatic casing shall be used inside water
coil tubes which may increase the water pressure drop and
interfere with drainability
4/06
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Thermal Corporation reserves the right to change any information concerning product or specification without notice or obligation.
A WIDE CHOICE OF EFFICIENT – HIGH
CAPACITY COOLING AND HEATING COILS
Thermal offers a wide choice of efficient – high capacity
cooling and heating coils to meet the most exacting need of
heating or cooling.
Water Coils – Type W
Type W coils have 5/8" OD tubing with standard 10 fin/in.
aluminum fins or 8 fin/in. copper fins (solder coated).
Supply and return headers are copper with MPT connections.
Maximum working conditions:
Cooling 300-psig, 200ºF, heating 200-psig, 300ºF.
All coils are drainable.
Direct Expansion Coils – Type DX
Type DX coils have 5/8" OD tubing with standard 10 fin/in/
aluminum fins or 8 fin/in. copper fins (solder coated).
Suction header is fabricated of Type L copper tubing,
connection is OD sweat.
Refrigerant inlet is provided with refrigerant distributor and
metering orifice with OD sweat connection.
Maximum working conditions of 300-psig, 200ºF.
Standard Steam – Type SS
Type SS steam coils have 5/8" OD tubing with standard fin
spacing of 10 fin/in. for aluminum fins and 8 fins/in. for copper
fins (solder coated).
Supply and return headers are available on the same or
opposite ends of the coil and are fabricated of copper.
Connections are male pipe thread.
Maximum working conditions of 200-psog, 300ºF.
Steam Distributing – Type SD
Type SD steam coils are on row with 1" OD condensing tube
and 5/8" OD steam distributing tube. Standard fin spacing is 10
fin/in. of aluminum.
5/8" OD coils over 60" in length will have supply connections at
each end.
Supply and condensate headers are fabricated of cooper and
connections are copper with MPT.
Connections can be on one end (standard) or on opposite
ends.
4/06
Page 2 of 2
Thermal Corporation reserves the right to change any information concerning product or specification without notice or obligation.