AIREDALE AIR 1-550.30 Manual

THIS MANUAL IS THE PROPERTY OF THE OWNER.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.
AIR 1-550.30
5H0797020000
INSTALLATION AND SERVICE MANUAL
steam/hot water unit heaters
Inspection On Arrival
1. Inspect unit upon arrival. In case of damage, report it
immediately to transportation company and your local factory
sales representative.
2. Check rating plate on unit to verify that power supply meets
available electric power at point of installation.
3. Inspect unit received for conformance with description of
product ordered (including specifications where applicable).
General Information
Installation and service instructions in this manual are applicable
to the three types of steam/hot water unit heaters which should
be installed in their proper applications for their most effective
function as overhead heating units.
The copper coils are warranted for operation at steam or hot
water pressures up to 150 lbs. per sq. in., and or temperatures
up to 375°F, cupronickel tube units are warranted for operating
pressures up to 250 PSI and operating temperatures up to
400°F. Canadian Standards Association (CSA) requirements
state that explosion-proof units may not be used with a
fluid temperature in excess of 329°F and still maintain their
explosion-proof rating, for national electric code ignition
temperature rating T3B for grain dust.
Motors are designed for continuous duty. They can operate in a
maximum ambient temperature of 104°F (40°C).
The unit heaters are listed by the Canadian Standards
Association as certified and Canadian Registered heat exchangers
CRN OH 9234.5C. *Does not apply to WVC/WPC 952.
Steam horizontal and vertical delivery unit heaters are available
in both standard and low-outlet temperature models. Low outlet
temperature models are recommended primarily for installation
on heating systems with steam pressures of 30 to 150 PSI.
When used at these steam pressures they provide lower outlet
air temperatures for longer heat throw and, because of wider
fin spacing, they are less susceptible to clogging in dusty
atmospheres.
The model number of each unit heater indicates its rated Btu/Hr.
capacity/1000 at 2 lbs. steam pressure and 60°F entering air
temperature. For example an WTC 63 has an output of 63,000
Btu/Hr. at 2 lbs. steam and 60°F entering air.
Model WTC
Horizontal Delivery
Top/Bottom
Inlet/Outlet
Model WSC
Horizontal Delivery
Side
Inlet/Outlet
Models WVC/WVN
Vertical Delivery
Model WPC/WPN
“Power-Throw”
IMPORTANT
The use of this manual is specifically intended
for a qualified installation and service agency.
A qualified installation and service agency must
perform all installation and service of these
appliances.
CAUTION
Do not remove outlet fan guard from vertical
type unit heaters.
May, 2017

AIR 1-550.30
SPECIAL PRECAUTIONS
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS
IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE SAFE,
EFFICIENT AND TROUBLE-FREE OPERATION. IN ADDITION,
PARTICULAR CARE MUST BE EXERCISED REGARDING
THE SPECIAL PRECAUTIONS LISTED BELOW. FAILURE
TO PROPERLY ADDRESS THESE CRITICAL AREAS COULD
RESULT IN PROPERTY DAMAGE OR LOSS, PERSONAL
INJURY, OR DEATH. THESE INSTRUCTIONS ARE SUBJECT
TO ANY MORE RESTRICTIVE LOCAL OR NATIONAL CODES.
HAZARD INTENSITY LEVELS
1. DANGER: Indicates an imminently hazardous situation
which, if not avoided, WILL result in death or serious injury.
2. WARNING: Indicates a potentially hazardous situation
which, if not avoided, COULD result in death or serious
injury.
3. CAUTION: Indicates a potentially hazardous situation which,
if not avoided, MAY result in minor or moderate injury.
4. IMPORTANT: Indicates a situation which, if not avoided,
MAY result in a potential safety concern.
2
SPECIAL PRECAUTIONS / TABLE OF CONTENTS / SI (METRIC) CONVERSION
FACTORS
IMPORTANT
1. Start-up and adjustment procedures must be performed
by a qualified service agency.
2. To check most of the Possible Remedies in the
troubleshooting guide listed in Table 15.1, refer to the
applicable sections of the manual.
Table of Contents
General Information.............................................................. 1
Special Precautions.............................................................. 2
SI (Metric) Conversion Factors............................................. 2
Unit Location......................................................................... 3
Unit Mounting ....................................................................3-4
Unit Suspension ................................................................... 5
Installation .........................................................................5-6
Piping................................................................................ 5
Electrical Connections ...................................................... 5
Operation.............................................................................. 6
Prior to Operation.............................................................. 6
Initial Start-up.................................................................... 6
Automatic Control Operations........................................... 6
General ............................................................................. 7
Performance Data ........................................................... 8-11
Dimensional Data ..........................................................12-13
Service................................................................................ 14
Service / Troubleshooting................................................... 15
Warranty ................................................................Back Page
SI (METRIC) CONVERSION FACTORS
Table 2.1
DANGER
Appliances with power codes 01, 02, 04, 05, and 10 must
not be installed where they may be exposed to a potentially
explosive or flammable atmosphere.
WARNING
1. Disconnect power supply before making wiring connections
to prevent electrical shock and equipment damage.
2. All appliances must be wired strictly in accordance with
wiring diagram furnished with the appliance. Any wiring
different from the wiring diagram could result in a hazard to
persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
4. Ensure that the supply voltage to the appliance as
indicated on the serial plate, is not 5% greater than the
rated voltage.
5. When servicing or repairing this equipment, use only
factory-approved service replacement parts. A complete
replacement parts list may be obtained by contacting
Modine Manufacturing Company. Refer to the rating plate
on the appliance for complete appliance model number,
serial number, and company address. Any substitution of
parts or controls not approved by the factory will be at the
owner’s risk.
CAUTION
1. Do not remove outlet fan guard from vertical type unit heaters.
2. Do not install units below 8 feet measured from the bottom
of the unit to the floor.
3. Service or repair of this equipment must be performed by
a qualified service agency.
4. Do not reuse any electrical component which has been
wet. Replace component.
5. Ensure that the supply voltage to the appliance, as indicated
on the serial plate is not 5% less than the rated voltage.
6. Heaters are designed for use in heating applications with
ambient temperatures between 0°F and 100°F in hot water
applications and -10°F to 100°F in steam applications.
To Convert Multiply By To Obtain
"W.C. 0.249 kPa
°F (°F-32) x 5/9 °C
Btu 1.06 kJ
Btu/ft337.3 kJ/m3
Btu/hr 0.000293 kW
CFH (ft3/hr) 0.000472 m3/min
CFH (ft3/hr) 0.00000787 m3/s
CFM (ft3/min) 0.0283 m3/min
CFM (ft3/min) 0.000472 m3/s
To Convert Multiply By To Obtain
feet 0.305 m
Gal/Hr. 0.00379 m3/hr
Gal/Hr. 3.79 l/hr
gallons 3.79 l
Horsepower 746 W
inches 25.4 mm
pound 0.454 kg
psig 6.89 kPa
psig 27.7 "W.C.

AIR 1-550.30
UNIT LOCATION
1. Units should not be installed in atmospheres where
corrosive fumes or sprays are present.
2. Be sure no obstructions block air intake or air discharge of
unit heater.
3. Locate horizontal delivery unit heaters so air streams of
individual units wipe the exposed walls of the building
with either parallel or angular flow without blowing directly
against the walls. Heaters should be spaced so the air
stream from one supports the air stream from another
heater. See Figure 3.1.
4. Columns, machinery, partitions, and other obstacles should
not interfere with air streams from unit heaters.
5. Unit heaters installed in a building exposed to a prevailing
wind should be located to direct a major volume of heated
air along the windward wall of the building.
6. Large expanses of glass, or large doors that are frequently
opened, should be covered by long-throw unit heaters such
as large horizontal delivery of “Power-Throw” unit heaters.
7. Vertical delivery unit heaters should generally be located in
the central area of the space to be heated. Place horizontal
delivery units along the walls of the same building where
heat loss is usually greatest. See Figure 3.3.
8. Arrange horizontal delivery units so they do not blow directly
at occupants. Air streams from this type of unit should be
directed down aisles, into open spaces on the floor, or along
exterior walls.
9. When only vertical delivery units are installed, they should
be located so exposed walls are blanketed by their air
streams. See Figure 3.2.
UNIT MOUNTING
Do not install unit above recommended maximum mounting
heights. Height at which unit heaters are installed is critical.
Maximum mounting heights for all units are listed in Table 4.1
and the height dimensions are shown in Figures 4.3 through
4.7. Maximum mounting heights for vertical models are given
for units with or without optional air deflectors. The data in
Table 4.1 is based on operating conditions of 2 lbs. steam or
220°F entering water with 60°F entering air. When operating
conditions are other than those above, refer to Figure 4.2 for
maximum mounting height correction factor. To obtain the
maximum mounting at actual operating conditions, multiply
the appropriate factor from Figure 4.2 by the mounting height
in Table 4.1. The maximum mounting height for all units is that
height above which the unit heater will not deliver heated air
to the floor at standard rating conditions.
Deflector Mounting
If an optional air deflector has been furnished for vertical units,
it is always shipped separately and can be attached to the unit
before suspension. Vertical louvers for horizontal units and
horizontal louvers for “Power-Throw” units can also be added
and positioned before installation. Cone-jet and louver-type
deflectors must be attached with angle brackets and machine
screws to the bottom cover of the unit. Refer to mounting
instructions which are furnished with each deflector.
Depending on supply or return piping arrangement, there is
a possibility of interference between certain anemostat air
deflectors and piping on some vertical air delivery unit heaters.
Check dimensions.
Figure 3.2 - Unit Locations of Vertical Units In
Narrow Buildings
Figure 3.1 - Horizontal Delivery Unit Location
Figure 3.3 - Combination Horizontal and Vertical
Delivery Unit Installation
UNIT LOCATION / UNIT MOUNTING
3
CAUTION
Do not install units below 8 feet measured from the bottom of
the unit to the floor.
DANGER
Appliances with power codes 01, 02, 04, 05, and 10 must
not be installed where they may be exposed to a potentially
explosive or flammable atmosphere.

AIR 1-550.30
4
Figure 4.3 - Horizontal Unit Delivery
Figure 4.3 Vertical Cone Jet
Figure 4.4 - Vertical One-Way & Two-Way Louvers
H
H
H
H
H
1.3
1.2
1.1
1.0
.9
.8
.7
.6
.5
Correction Factor "R"
150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370
Average Water Temp – F
Steam Pressure
25 10 20 30 50 70 100 150
➀With horizontal louvers opened 30° from the vertical plane. WTC units have top and bottom piping connections, WSC units have side connections. All have copper tubes.
➁ V and PT models have copper tubes, VN and PTN models have cupronickel tubes. Mounting heights are maximum for heaters operating at standard conditions
(2 lbs. steam or 220°F water with 60°F entering air). Heights listed for Louver or Cone-Jet are with deflectors in fully-opened position. Refer to Figure 4.2 for correction of
mounting heights under other operating conditions. Maximum mounting height will be reduced as entering air temperatures exceed 60°F.
These correction factors are to be used as multipliers to correct the maximum recommended mounting heights of unit heaters when operated with steam pressures other
than 2 pounds or with water at other than average temperature of 220°F.
Table 4.1 - Maximum Mounting Heights
UNIT MOUNTING
Figure 4.2 - Maximum Mounting Heights Correction Factors
H
Figure 4.6 - Vertical Truncone
Horizontal Type “Power-Throw” Type Vertical Type with Deectors 
No Deector Cone-Jet Truncone Louvers
Model No. Height (ft) Model No. Height (ft) Model No. Height (ft) Height (ft) Height (ft) Height (ft)
Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T.
WTC/WSC 18 8 9 — — —
WVC/WVN 42 
11 13 15 17 8 9 13 15
WTC/WSC 24 911 — — —
WVC/WVN 59 
14 16 19 22 9 11 16 18
WTC/WSC 33 10 12 — — —
WVC/WVN 78 
15 19 20 26 11 14 17 22
WTC/WSC 47 12 14 — — —
WVC/WVN 95 
15 19 20 26 11 14 17 22
WTC/WSC 63 14 16 — — —
WVC/WVN 139 
18 23 24 31 13 17 21 26
WTC/WSC 86 15 17 — — —
WVC/WVN 161 
20 26 27 35 14 18 23 30
WTC/WSC 108 17 19 — — —
WVC/WVN 193 
22 27 30 36 16 19 25 31
WTC/WSC 121 16 18 — — —
WVC/WVN 212 
22 27 30 36 16 19 25 31
WTC/WSC 165 19 21 — — —
WVC/WVN 247 
26 32 34 42 17 21 30 37
WTC/WSC 193 18 — WPC/WPN 279 16 —
WVC/WVN 279 
30 36 37 45 18 22 35 41
WTC/WSC 258 19 22 WPC/WPN 333 17 —
WVC/WVN 333 
30 36 37 45 17 20 35 41
WTC/WSC 290 20 23 WPC/WPN 385 17 —
WVC/WVN 385 
30 36 36 43 17 20 35 41
WTC/WSC 340 20 23 WPC/WPN 500 18 —
WVC/WVN 500 
37 45 44 54 19 24 42 51
—— — WPC/WPN 610 20 22
WVC/WVN 610 
36 44 43 52 19 24 41 50
—— — WPC 952 21 — WVC 952 37 45 — — — — — —

AIR 1-550.30
water systems, include a balancing valve in return line for
water flow regulation. A drain valve should also be provided
below each unit heater to allow removal of water from the
heating coil if located in an area subject to freezing.
3. In steam or hot water systems, rapid air removal is required
because entrained air is a cause of corrosion. Hot water
systems should be equipped with suitable air vent valves for
rapid and complete removal of air at the high points and ends
of both supply and return mains. Proper air venting for steam
systems can be achieved by use of a steam trap with an
internal air vent.
4. Traps must be located below the outlet of the unit. Consult
trap manufacturer for specific recommendations. Each steam
unit heater should be provided with a trap of sufficient size
and capacity to pass a minimum of two times the normal
condensate released by the unit at the minimum differential
pressure in the system. Trap capacity is based on the
pressure differential between supply and return mains. Steam
systems should be equipped with a float and thermostatic trap
or an inverted bucket trap with an air bypass.
5. It is advisable to use a pipe line strainer before each steam
trap draining a unit heater. This protection will reduce the
maintenance of the steam trap. When strainers are used they
should be installed between the unit heater and the trap and
be the same size as the trap tapping. In order to catch dirt
and scale, the strainer should have a screen perforation size
smaller than the trap orifices.
6. On systems where the steam supply to the unit heater is
modulated or controlled by a motorized valve, a vacuum
breaker should be installed between unit outlet and the trap.
If a vacuum breaker is used, it should be in conjunction with a
float and thermostatic trap.
7. Install a scale pocket at bottom of unit heater to collect dirt
and scale as shown in illustrations. Pipe diameter must be the
same size as unit connections and about 6" long.
8. Provide adequate pipe hangers, supports, or anchors to
secure the piping system independently of the unit heater.
Electrical Connections
1. Installation of wiring must conform with local building codes,
or in the absence of local codes, with the National Electric
Code ANSI/NFPA 70 - Latest Edition. Unit must be electrically
grounded in conformance to this code. In Canada, wiring must
comply with CSA C22.1, Electrical Code.
Figure 5.1 - Unit Suspension
UNIT SUSPENSION / INSTALLATION
WARNING
1. Disconnect power supply before making wiring connections
to prevent electrical shock and equipment damage.
2. All appliances must be wired strictly in accordance with
wiring diagram furnished with the appliance. Any wiring
different from the wiring diagram could result in a hazard
to persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
4. Ensure that the supply voltage to the appliance as indicated
on the serial plate is not 5% greater than the rated voltage.
5
CAUTION
1. Do not install units below 8 feet measured from the bottom
of the unit to the floor.
2. Do not reuse any electrical component which has been
wet. Replace component.
3. Ensure that the supply voltage to the appliance, as indicated
on the serial plate is not 5% less than the rated voltage.
Piping - See Figure 6.1
1. Branch piping to and from unit heater should include swing
joints to allow for expansion and contraction of the piping
without placing a strain on the unit heater element. On steam
systems, the branch piping should be taken off and returned
above the centerline of the supply and return lines.
2. Install pipe unions and shut-off valves in lines to and from
each unit heater to allow maintenance or replacement of unit
without shutting down and draining entire system. For hot
UNIT SUSPENSION
Horizontal delivery units, Model WTC/WSC Series. All
horizontal delivery units, except Models WTC 18 and WTC 24,
have two tapped holes in the top for unit suspension. WTC 18
and WTC 24 models do not require independent suspension and
are installed directly on their supply piping. Models WTC 33-86
and WSC 18-86 have 3/8"-16 tapped holes, model sizes 108
and larger have 1/2"-13 tapped holes. Piping support hangers
or clamps are recommended and should be placed as close
to the unit heater as possible. For other models, independent
suspension can be made with threaded rods, pipes, or ceiling
hanger brackets. See Figure 5.1.
Vertical delivery units. Vertical delivery Models WVC/WVN
42 through WVC/WVN 279 have four tapped holes (1/2"-13)
in the top cover for unit suspension. Unit suspension for these
models can be made with threaded rods, pipes or ceiling hanger
brackets. Models WVC/WVN 333 through WVC/WVN 952 are
equipped with an angle-iron mounting bracket that has eight 5/8"
diameter hanger holes permitting hook-hoisting and suspension
with cables, if desired. A 1/2" x 3" center U-bolt can be inserted
in the two holes at each end of the bracket to accommodate
suspension with four threaded rods, pipes or hanger brackets.
“Power-Throw” horizontal delivery units. “Power-Throw”
units are designed for horizontal air delivery and are equipped
with hanger brackets for suspension. Three hanger brackets are
supplied for Model WPC/WPN 279, one on the front, and two
on the rear panel for three-point suspension. Only two hanger
brackets are furnished on the front panel of Models WPC/WPN
333 through WPC/WPN 952 (for required four-point suspension
use the two hanger brackets on the front panel and the two
holes on the ends of the upper angle supports at the rear of the
unit). Each hanger bracket has a 5/8" diameter mounting hole
for hook-hoisting and suspension with threaded rods, pipes, or
cables.
Note: A pipe hanger adapter kit as illustrated in Figure 5.1
is available as an accessory from Modine. The kit consists of
two drilled 3/4" I.P.S. pipe caps and two capscrews to facilitate
threaded-pipe suspension. One kit will mount applicable WTC or
WSC models, two kits are required for WVC/WVN models.
WVC/WVN 42 Thru WVC/WVN 279
WSC 18 Thru WSC 340
WTC 33 Thru WTC 340
Threaded Pipe
Suspension
Method
Threaded Rod
Suspension
Method
Pipe Hanger
Adapter Kit
WVC/WVN 333 Thru WVC/WVN 952

AIR 1-550.30
6
Figure 6.1 - Suggested Piping Arrangements ➀
Steam Systems
Unit Heater Connection for High Pressure Steam
Horizontal Unit Heater Connected to
Overhead Hot Water Mains
Vertical Unit Heater Connected to
Lower Hot Water Mains
Unit Heater Connection for Low-Pressure Steam
Open Gravity or Vacuum Return System
INSTALLATION / OPERATION
Hot Water Systems
Electrical Connections (Cont.)
2. Electric wiring must be sized to carry the full load amp draw
of the motor, starter, and any controls that are used with
the unit heater. All units with power codes 04, 05, 09, or
10 (polyphase motors) must be provided with suitable
overcurrent protection in circuit supplying heater at
installation. Overcurrent protectors should be sized based
on motor current rating shown on the unit serial plate, and
applicable national electric code procedures.
All units are provided with an electrical junction box.
Junction boxes are either integral to the motor or attached
to the unit casing. Units with explosion-proof motors have
an explosion-proof junction box attached to the motor.
Any damage to or failure of Modine units caused by
incorrect wiring of the units is not covered by Modine’s
standard warranty.
3. Location of room thermostat, when supplied, should be in
the natural circulating path of room air. Mount thermostat
about five feet above floor level where it will not be affected
by heat from the unit or other sources of drafts that would
prevent it from properly controlling room temperature. See
instructions packed with the thermostat.
4. Speed controllers furnished with specified unit heater fan
motors, are packed separately and must be connected
according to wiring diagram with each controller.
Prior to Operation
1. Make sure fuses are installed in fused disconnect switches.
2. Check all electrical connections to assure they are secure.
3. Check rigidity of unit mounting. Tighten all fasteners,
if necessary.
4. Inspect piping, strainers, traps, fittings, etc.
Initial Start-Up
1. Set thermostat to lowest position.
2. Turn on power supply to unit.
3. Open return gate valve, and then open supply gate valve
to unit.
4. Raise thermostat setting to desired position.
5. Adjust louvers (if provided) for desired heat distribution.
6. To ensure proper sequence of operation, cycle unit on and
off a few times by raising and lowering thermostat setting.
7. Check for proper rotation of fan. All fans must rotate in a
counterclockwise direction when viewed from the back
(WTC/WSC, WPC/WPN) or top (WVC/WVN) of the unit
heater.
Automatic Control Operations
Install one of the following operating systems for continuous
automatic control.
Intermittent Fan Operation — Hot Coil
A room thermostat starts and stops the fan motor. An aquastat
is sometimes strapped to the return piping to prevent fan
operation when heat is not being supplied to the unit heater.
Continuous Fan Operation — Intermittent Hot/Cold Coil
A room thermostat controls a valve which opens to allow steam
or hot water to supply the unit and closes to shut off the supply
when the thermostat is satisfied.
OPERATION
➀ Arrangements shown are recommendations only. Where horizontal units are shown, vertical units can be substituted or vice versa. For modifications to piping
suggestions shown, refer to your local plumbing authority.
Model WSC
Side Connections
Model WTC
Top and Bottom Connections
Model WTC
Top and Bottom Connections
Model WSC
Side Connections
Model WTC
Side Connections
Model WSC
Top and Bottom Connections

AIR 1-550.30
OPERATION
7
Connections — Female-type permits direct connection of unit heater to the
piping. WSC models have malleable connectors at side of the unit.
Vertical fins — Less opportunity for dust and dirt to collect. Reduces cleaning.
Fins die-formed for added strength and heat transfer.
Coil — All air passes through coil. Heating is uniform. Design assures maximum
control over air delivery and temperature of air leaving the heater. Aluminum
fins die-formed for added strength — increased heat transfer. Fins mechanically
bonded to serpentine copper tube.
Motor — All motors are totally enclosed. Single phase types include built-in
thermal overload protection. All motor wiring is terminated in an electrical junction
box either supplied on the unit heater or as an integral part of the motor.
Fan — Lightweight. Blades accurately balanced and pitched to move air quietly
and positively — with minimum power requirement.
Safety fan guard — Standard equipment. Bolted steel rod fan guard completely
surrounds the fan offering constant protection.
Deflector blades — Adjustable horizontal air-deflector blades are standard —
vertical blades are optional.
Casings — Electrostatically applied, gray-green polyester powder coat paint
finish is applied over rust- and corrosion-treated steel for long life.
Motor-Cooling Cone — Shields
motor from coil heat — prolongs life
of insulation, windings, and lubricant.
Prolongs motor life.
Coil — Aluminum fins mechanically
bonded to tubes for maximum heat
transfer. All steam- and water-
carrying passages between heavy
steel pipe connections are copper, or
cupronickel.
Motor — All motors are totally
enclosed. Single phase types include
built-in thermal overload protection.
Fan — Accurately balanced to
operate quietly and at lowest possible
power consumption.
Junction Box — Easier installation
with single point electrical connection.
Motor easily removable — Modine
design permits motor to be removed
through opening below the unit —
especially important where heaters are
installed close to ceiling.
Vertical fins — Less opportunity for
dust and dirt to collect. Exposed for
easy cleaning with air hose and brush.
Casings — Electrostatically applied,
gray-green polyester powder coat paint
finish applied over rust- and corrosion-
treated steel lasts longer.
Figure 7.1 - Horizontal Delivery Unit Cutaway
Figure 7.4 - Vertical Delivery Unit Cutaway
Figure 7.2 - Typical Horizontal Unit with Standard
Junction Box
Figure 7.3 - Horizontal Unit with Optional
Fingerproof Fan Guard

AIR 1-550.30
8
2
lbs.
STEAM
60° ENT. AIR
STEAM PERFORMANCE DATA - STANDARD MODELS
jHorizontal units with horizontal louvers open 30° from vertical plane. Vertical types equipped with cone jet deflector, blades fully opened are shown in bold.
kCFM for horizontal types is entering CFM. CFM for vertical and “Power Throw” types is leaving CFM.
➂WVC and WPC models have copper tubes, WVN and WPN models have 90/10 cupro-nickel tubes.
➃Requires Solid State Motor Speed Controller.
Type Model No. Btu/hr Sq. Ft.
EDR
Air Data Motor Data
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Condensate
lb/hr Hp Approx. RPM
Horizontal
Delivery
WTC/WSC 18 18,000 75 8 17 340 625 107 19 1/60 1,550
WTC/WSC 24 24,000 100 9 18 370 695 119 25 1/25 1,550
WTC/WSC 33 33,000 138 10 21 630 690 108 34 1/25 1,550
WTC/WSC 47 47,000 196 12 28 730 810 119 49 1/12 1,550
WTC/WSC 63 63,000 263 14 29 1,120 690 111 65 1/12 1,550
WTC/WSC 86 86,000 358 15 31 1,340 835 118 89 1/8 1,625
WTC/WSC 108 108,000 450 17 31 2,010 790 109 112 1/8 1,625
WTC/WSC 121 121,000 504 16 25 1,775 715 122 125 1/5 1,075
WTC/WSC 165 165,000 688 19 40 3,240 880 106 171 1/3 1,075
WTC/WSC 193 193,000 804 18 38 2,900 810 121 200 1/3 1,075
WTC/WSC 258 258,000 1,075 19 44 4,560 750 111 267 1/2 1,075
WTC/WSC 290 290,000 1,208 20 46 4,590 765 117 300 1/2 1,075
WTC/WSC 340 340,000 1,417 20 46 5,130 735 120 352 1/2 1,075
Power-
Throw™

WPC/WPN 279 279,000 1,163 16 100 5,460 2,165 111 289 1/2 1,075
WPC/WPN 333 333,000 1,388 17 110 5,980 2,165 116 345 3/4 1,140
WPC/WPN 385 385,000 1,604 17 115 7,680 1,860 110 398 1 1,140
WPC/WPN 500 500,000 2,083 18 130 10,390 2,520 108 517 1 1/2 1,140
WPC/WPN 610 610,000 2,542 20 140 11,750 2,315 112 631 1 1/2 1,140
WPC 952 952,000 3,967 21 145 12,170 2,321 139 985 2 1,140
Vertical
Delivery

WVC/WVN 42 42,000 175 11 15 17 11 950 825 103 43 1/30 1,050
WVC/WVN 59 59,000 246 14 19 21 14 1,155 1,005 111 61 1/30 1,050
WVC/WVN 78 78,000 325 15 20 23 15 1,590 1,065 109 81 1/15 1,050
WVC/WVN 95 95,000 396 15 20 23 15 1,665 1,120 118 98 1/15 1,050
WVC/WVN 139 139,000 579 18 24 27 18 2,660 1,285 112 144 1/6 1,075
WVC/WVN 161 161,000 671 20 27 30 20 2,945 1,420 115 167 1/3 1,075
WVC/WVN 193 193,000 804 22 30 33 22 3,500 1,690 116 200 1/3 1,075
WVC/WVN 212 212,000 883 22 30 33 22 3,610 1,740 120 219 1/3 1,075
WVC/WVN 247 247,000 1,029 26 34 39 26 4,820 1,910 111 256 1/2 1,075
WVC/WVN 279 279,000 1,163 30 37 45 30 5,460 2,165 111 289 1/2 1,075
WVC/WVN 333 333,000 1,388 30 37 45 30 5,980 2,165 116 345 3/4 1,140
WVC/WVN 385 385,000 1,604 30 36 45 30 7,680 1,860 110 398 1 1,140
WVC/WVN 500 500,000 2,083 37 44 56 37 10,390 2,520 108 517 1 1/2 1,140
WVC/WVN 610 610,000 2,542 36 43 54 36 11,750 2,315 112 631 1 1/2 1,140
WVC 952 952,000 3,967 37 56 12,170 2,321 139 985 2 1,140
Table 8.1 - Performance Data for Standard Units at Standard Conditions of
2 lb. Steam and 60°F Entering Air High Motor Speed
Table 8.2 - Performance Data for Standard Units at Standard Conditions of
2 lb. Steam and 60°F Entering Air Reduced Motor Speed ➃
Type Model No. Btu/hr Sq. Ft.
EDR
Air Data Motor Data
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Condensate
lb/hr Hp Approx. RPM
Horizontal
Delivery
WTC/WSC 18 14,000 58 8 10 220 415 118 14 1/60 1,000
WTC/WSC 24 18,000 75 9 11 230 440 131 19 1/25 1,000
WTC/WSC 33 25,000 104 10 13 395 440 118 26 1/25 1,000
WTC/WSC 47 38,000 158 12 17 450 515 137 39 1/12 1,000
WTC/WSC 63 47,000 195 14 17 685 430 122 49 1/12 1,000
WTC/WSC 86 64,000 265 15 19 825 525 131 66 1/8 1,000
WTC/WSC 108 81,000 340 17 19 1,255 500 119 84 1/8 1,000

9
2
lbs.
STEAM
60° ENT. AIR
STEAM PERFORMANCE DATA - LOW OUTLET TEMPERATURE MODELS
jHorizontal units with horizontal louvers open 30° from vertical plane. Vertical types equipped with cone jet deflector, blades fully opened are shown in bold.
kCFM for horizontal types is entering CFM. CFM for vertical and “Power-Throw” types is leaving CFM.
lWVC and WPC models have copper tubes, WVN and WPN models have 90/10 cupro-nickel tubes.
mRequires Solid State Motor Speed Controller.
AIR 1-550.29
Table 9.2 - Performance Data for Low Outlet Temperature Units at Standard Conditions of
2 lb. Steam and 60°F Entering Air Reduced Motor Speed ➃
Table 9.1 - Performance Data for Low Outlet Temperature Units at Standard Conditions of
2 lb. Steam and 60°F Entering Air High Motor Speed
Type Model No. Btu/hr Sq. Ft.
EDR
Air Data Motor Data
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Condensate
lb/hr Hp Approx. RPM
Horizontal
Delivery
WTC/WSC 18L 15,900 66 9 20 364 655 100 16 1/60 1,550
WTC/WSC 24L 19,300 80 11 21 435 795 100 20 1/25 1,550
WTC/WSC 33L 29,500 123 12 24 695 745 99 31 1/25 1,550
WTC/WSC 47L 32,000 133 14 32 855 910 94 33 1/12 1,550
WTC/WSC 63L 52,500 219 16 33 1,170 710 101 54 1/12 1,550
WTC/WSC 86L 61,500 256 17 36 1,510 910 97 64 1/8 1,625
WTC/WSC 108L 86,500 360 19 36 2,150 825 97 90 1/8 1,625
WTC/WSC 121L 88,000 367 18 29 2,070 800 98 91 1/5 1,075
WTC/WSC 165L 143,000 596 21 45 3,480 930 97 148 1/3 1,075
WTC/WSC 258L 190,000 792 22 51 4,655 750 98 197 1/2 1,075
WTC/WSC 290L 207,000 863 23 53 5,040 805 94 214 1/2 1,075
WTC/WSC 340L 255,000 1,063 23 53 5,575 775 102 264 1/2 1,075
Power-
Throw™

WPC/WPN 610L 470,000 1,958 22 154 2,400 2,445 97 486 1 1/2 1,140
Vertical
Delivery

WVC 42L 33,000 138 13 17 20 13 960 835 94 34 1/30 1,050
WVC 59L 44,000 183 16 22 24 16 1,190 1,035 96 45 1/30 1,050
WVC 78L 62,000 258 19 26 29 19 1,740 1,070 95 65 1/15 1,050
WVC 95L 71,000 296 19 26 29 19 1,760 1,180 99 73 1/15 1,050
WVC/WVN 139L 103,000 429 23 31 35 23 2,860 1,380 95 106 1/6 1,075
WVC/WVN 161L 127,000 529 26 35 39 26 3,400 1,640 96 132 1/3 1,075
WVC/WVN 193L 149,000 621 27 36 41 27 3,710 1,790 99 154 1/3 1,075
WVC/WVN 212L 163,000 679 27 36 41 27 3,830 1,845 102 169 1/3 1,075
WVC/WVN 247L 190,000 792 32 42 48 32 5,110 2,030 96 197 1/2 1,075
WVC/WVN 279L 215,000 896 36 45 54 36 5,790 2,300 96 222 1/2 1,075
WVC/WVN 333L 256,000 1,067 36 45 54 36 6,340 2,300 100 265 3/4 1,140
WVC/WVN 385L 296,000 1,233 36 43 54 36 8,140 1,970 95 307 1 1,140
WVC/WVN 500L 385,000 1,604 45 54 68 45 11,000 2,670 94 400 1 1/2 1,140
WVC/WVN 610L 470,000 1,958 44 52 66 44 12,400 2,445 97 485 1 1/2 1,140
WVC 952L 733,000 3,055 45 68 12,940 2,450 115 759 2 1,140
Type Model No. Btu/hr Sq. Ft.
EDR
Air Data Motor Data
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Condensate
lb/hr Hp Approx. RPM
Horizontal
Delivery
WTC/WSC 18L 12,000 51 9 12 230 425 108 12 1/60 1,000
WTC/WSC 24L 14,400 60 11 13 265 490 109 15 1/25 1,000
WTC/WSC 33L 22,000 92 12 14 430 470 107 23 1/25 1,000
WTC/WSC 47L 24,300 101 14 19 540 580 101 25 1/12 1,000
WTC/WSC 63L 39,500 164 16 20 725 445 109 41 1/12 1,000
WTC/WSC 86L 46,000 192 17 22 925 565 105 48 1/8 1,000
WTC/WSC 108L 65,000 270 19 22 1,330 520 104 67 1/8 1,000

AIR 1-550.30
10
200°F ENTERING
WATER
60°F ENTERING
AIR
20°F WATER
TEMPERATURE
DROP
HOT WATER PERFORMANCE DATA - STANDARD MODELS
Table 10.1 - Performance Data for Standard Units at Standard Conditions of
200°F Entering Water and 60°F Entering Air High Motor Speed
Table 10.2 - Performance Data for Standard Units at Standard Conditions of
200°F Entering Water and 60°F Entering Air Reduced Motor Speeds ➃
jHorizontal units with horizontal louvers open 30° from vertical plane. Vertical types equipped with cone jet deflector, blades fully opened are shown in bold.
Non-bolded mounting height/spread data is for units without deflectors.
kCFM for horizontal types is entering CFM. CFM for vertical and “Power-Throw” types is leaving CFM.
➂WVC and WPC models have copper tubes, WVN and WPN models have 90/10 cupro-nickel tubes.
➃Requires Solid State Motor Speed Controller.
Type Model No. Btu/hr
Water Data Air Data Motor Data
GPM
Pressure
Drop
(Ft. of
Water)
Min/Max
GPM
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Hp Approx.
RPM
Horizontal
Delivery
WTC/WSC 18 12,600 1.3 0.5 0.3 / 5.0 9 18 340 615 93 1/60 1,550
WTC/WSC 24 16,200 1.7 0.8 0.3 / 5.0 10 19 370 675 100 1/25 1,550
WTC/WSC 33 21,700 2.3 0.2 0.4 / 10.0 11 23 630 675 91 1/25 1,550
WTC/WSC 47 30,900 3.2 0.4 0.4 / 10.0 13 30 730 785 98 1/12 1,550
WTC/WSC 63 45,600 4.7 0.6 0.5 / 20.0 15 31 1,120 680 97 1/12 1,550
WTC/WSC 86 60,200 6.3 1.0 0.5 / 20.0 16 33 1,340 820 101 1/8 1,625
WTC/WSC 108 83,700 8.7 2.8 0.5 / 30.0 18 33 2,010 775 98 1/8 1,625
WTC/WSC 121 93,000 9.7 3.3 0.7 / 30.0 17 27 1,775 700 107 1/5 1,075
WTC/WSC 165 130,900 13.6 8.6 2.0 / 30.0 20 43 3,240 870 96 1/3 1,075
WTC/WSC 193 143,000 14.9 1.4 2.0 / 50.0 19 41 2,900 790 105 1/3 1,075
WTC/WSC 258 201,900 21.0 5.7 2.5 / 70.0 20 47 4,560 740 100 1/2 1,075
WTC/WSC 290 228,600 23.8 7.1 2.5 / 70.0 22 50 4,590 750 105 1/2 1,075
WTC/WSC 340 271,100 28.2 11.3 2.8 / 70.0 22 50 5,130 720 108 1/2 1,075
Power-
Throw™

WPC/WPN 279 192,300 20.0 0.2 4.5 / 60.0 17 108 5,460 2,165 94 1/2 1,075
WPC/WPN 333 238,500 24.8 0.4 4.5 / 100.0 18 117 5,980 2,165 99 3/4 1,140
WPC/WPN 385 276,100 28.8 0.6 4.5 / 100.0 18 124 7,680 1,860 95 1 1,140
WPC/WPN 500 358,000 37.3 0.5 6.0 / 100.0 19 138 10,390 2,520 93 1 1/2 1,140
WPC/WPN 610 450,400 46.9 1.0 6.0 / 100.0 22 151 11,750 2,315 97 1 1/2 1,140
WPC 952 721,600 75.2 1.1 14.0 / 200.0 23 150 12,166 2,321 120 2 1,140
Vertical
Delivery

WVC/WVN 42 30,100 3.1 0.6 0.5 / 10.0 12 16 18 12 950 825 90 1/30 1,050
WVC/WVN 59 42,600 4.4 0.5 0.8 / 15.0 15 20 22 15 1,155 1,005 96 1/30 1,050
WVC/WVN 78 57,000 5.9 0.5 1.0 / 20.0 16 22 24 16 1,590 1,065 95 1/15 1,050
WVC/WVN 95 69,300 7.2 0.5 1.3 / 25.0 16 22 24 16 1,665 1,120 101 1/15 1,050
WVC/WVN 139 106,600 11.1 2.6 1.0 / 30.0 19 26 29 19 2,660 1,285 99 1/6 1,075
WVC/WVN 161 123,200 12.8 2.2 1.3 / 40.0 21 29 32 22 2,945 1,420 101 1/3 1,075
WVC/WVN 193 147,200 15.3 2.2 1.5 / 50.0 23 32 35 24 3,500 1,690 101 1/3 1,075
WVC/WVN 212 161,700 16.8 1.5 2.0 / 60.0 23 32 35 24 3,610 1,740 104 1/3 1,075
WVC/WVN 247 188,700 19.7 2.1 2.0 / 60.0 28 37 41 28 4,820 1,910 98 1/2 1,075
WVC/WVN 279 212,600 22.2 2.1 2.3 / 75.0 32 40 48 32 5,460 2,165 98 1/2 1,075
WVC/WVN 333 260,100 27.1 3.8 2.8 / 75.0 32 40 48 32 5,980 2,165 102 3/4 1,140
WVC/WVN 385 302,100 31.5 5.0 3.3 / 75.0 32 39 48 32 7,680 1,860 98 1 1,140
WVC/WVN 500 391,700 40.8 4.8 3.0 / 100.0 39 47 59 40 10,390 2,520 96 1 1/2 1,140
WVC/WVN 610 450,400 46.9 1.0 6.0 / 100.0 38 46 57 39 11,750 2,315 97 1 1/2 1,140
WVC 952 721,600 75.2 1.1 14.0 / 200.0 39 59 12,166 2,321 120 2 1,140
Type Model No. Btu/hr
Water Data Air Data Motor Data
GPM
Pressure
Drop (Ft.
of Water)
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Hp Approx.
RPM
Horizontal
Delivery
WTC/WSC 18 9,900 1.3 0.5 9 11 220 400 101 1/60 1,000
WTC/WSC 24 12,400 1.7 0.8 10 12 230 425 109 1/25 1,000
WTC/WSC 33 16,700 2.3 0.2 11 14 395 430 98 1/25 1,000
WTC/WSC 47 23,600 3.2 0.4 13 18 450 490 107 1/12 1,000
WTC/WSC 63 34,600 4.7 0.6 15 18 685 420 106 1/12 1,000
WTC/WSC 86 45,900 6.3 1.0 16 20 825 515 110 1/8 1,000
WTC/WSC 108 64,300 8.7 2.8 18 20 1,255 490 106 1/8 1,000

AIR 1-550.30
HOT WATER PERFORMANCE DATA - LOW OUTLET TEMPERATURE MODELS
11
200°F ENTERING
WATER
60°F ENTERING
AIR
20°F WATER
TEMPERATURE
DROP
Table 11.1 - Performance Data for Low Outlet Temperature Units at Standard Conditions of
200°F Entering Water and 60°F Entering Air – High Motor Speed
Table 11.2 - Performance Data for Low Outlet Temperature Units at Standard Conditions of
200°F Entering Water and 60°F Entering Air – Reduced Motor Speeds ➃
jHorizontal units with horizontal louvers open 30° from vertical plane. Vertical types equipped with cone jet deflector, blades fully opened are shown in bold.
Non-bolded mounting height/spread data is for units without deflectors.
kCFM for horizontal types is entering CFM. CFM for vertical and “Power-Throw” types is leaving CFM.
➂WVC and WPC models have copper tubes, WVN and WPN models have 90/10 cupro-nickel tubes.
➃Requires Solid State Motor Speed Controller.
Type Model No. Btu/hr
Water Data Air Data Motor Data
GPM
Pressure
Drop
(Ft. of
Water)
Min/Max
GPM
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Hp Approx.
RPM
Horizontal
Delivery
WTC/WSC 18L 11,300 1.2 0.4 0.3 / 5.0 10 21 364 650 88 1/60 1,550
WTC/WSC 24L 13,700 1.4 0.6 0.3 / 5.0 12 22 435 775 88 1/25 1,550
WTC/WSC 33L 19,300 2.0 0.2 0.4 / 10.0 13 26 695 730 85 1/25 1,550
WTC/WSC 47L 21,100 2.2 0.2 0.4 / 10.0 15 34 855 890 82 1/12 1,550
WTC/WSC 63L 37,900 4.0 0.4 0.5 / 20.0 17 35 1,170 695 89 1/12 1,550
WTC/WSC 86L 44,600 4.6 0.6 0.5 / 20.0 18 38 1,510 890 87 1/8 1,625
WTC/WSC 108L 66,100 6.9 1.8 0.8 / 30.0 20 38 2,150 815 88 1/8 1,625
WTC/WSC 121L 66,700 6.9 1.9 0.8 / 30.0 19 31 2,070 785 89 1/5 1,075
WTC/WSC 165L 113,200 11.8 6.6 2.0 / 30.0 23 48 3,480 920 89 1/3 1,075
WTC/WSC 258L 147,400 15.4 3.2 2.5 / 70.0 23 54 4,655 735 89 1/2 1,075
WTC/WSC 290L 161,100 16.8 3.7 2.5 / 70.0 25 57 5,040 800 89 1/2 1,075
WTC/WSC 340L 200,900 20.9 6.6 2.5 / 70.0 25 57 5,575 760 93 1/2 1,075
Power-
Throw™

WPC/WPN 610L 344,900 35.9 0.6 6.0 / 100.0 24 158 12,400 2,445 86 1 1/2 1,140
Vertical
Delivery

WVC 42L 23,000 2.4 0.4 0.5 / 10.0 14 18 21 14 960 835 83 1/30 1,050
WVC 59L 32,600 3.4 0.3 0.8 / 15.0 17 23 25 17 1,190 1,035 86 1/30 1,050
WVC 78L 43,600 4.5 0.3 1.0 / 20.0 20 28 31 21 1,740 1,170 84 1/15 1,050
WVC 95L 53,100 5.5 0.3 1.3 / 25.0 20 28 31 21 1,760 1,180 89 1/15 1,050
WVC/WVN 139L 81,200 8.5 1.6 1.0 / 30.0 24 33 37 25 2,860 1,380 87 1/6 1,075
WVC/WVN 161L 93,900 9.8 1.3 1.3 / 40.0 28 37 41 28 3,400 1,640 86 1/3 1,075
WVC/WVN 193L 112,500 11.7 1.3 1.5 / 50.0 29 38 43 29 3,710 1,790 89 1/3 1,075
WVC/WVN 212L 123,400 12.9 0.9 2.0 / 60.0 29 38 43 29 3,830 1,845 91 1/3 1,075
WVC/WVN 247L 143,600 15.0 1.2 2.0 / 60.0 34 45 51 35 5,110 2,030 87 1/2 1,075
WVC/WVN 279L 162,200 16.9 1.2 2.3 / 75.0 38 48 57 39 5,790 2,300 87 1/2 1,075
WVC/WVN 333L 198,300 20.7 2.3 2.3 / 75.0 38 48 57 39 6,340 2,300 90 3/4 1,140
WVC/WVN 385L 229,100 23.9 3.0 2.3 / 75.0 38 46 57 49 8,140 1,970 87 1 1,140
WVC/WVN 500L 295,000 30.7 2.8 3.0 / 100.0 48 57 72 49 11,000 2,670 85 1 1/2 1,140
WVC/WVN 610L 344,900 35.9 0.6 6.0 / 100.0 47 55 70 48 12,400 2,445 86 1 1/2 1,140
WVC 952L 546,700 56.9 0.7 14.0 / 100.0 48 72 12,800 2,440 102 2 1,140
Type Model No. Btu/hr
Water Data Air Data Motor Data
GPM
Pressure
Drop
(Ft. of
Water)
Maximum
Mounting
Height (ft.)

Heat Throw
or Spread @
Max. Height

CFM

Outlet
Velocity
(Fpm)
Final Air
Temp.
(°F)
Hp Approx.
RPM
Horizontal
Delivery
WTC/WSC 18L 8,700 1.2 0.4 10 13 230 410 94 1/60 1,000
WTC/WSC 24L 10,400 1.4 0.6 12 14 265 475 95 1/25 1,000
WTC/WSC 33L 14,700 2.0 0.2 13 16 430 455 91 1/25 1,000
WTC/WSC 47L 16,300 2.2 0.2 15 21 540 570 87 1/12 1,000
WTC/WSC 63L 29,000 4.0 0.4 17 21 725 435 96 1/12 1,000
WTC/WSC 86L 33,900 4.6 0.6 18 23 925 550 93 1/8 1,000
WTC/WSC 108L 50,500 6.9 1.8 20 23 1,330 510 94 1/8 1,000

AIR 1-550.30
12
DIMENSIONAL DATA
Table 12.1 - Model WTC and WSC Dimensions ➀ ➁
Horizontal Air Delivery Models — Two Styles
Female Approx.
Model 115 Std. 115V Exp. Connections Fan Shipping
Number A B C Motor Motor E F G H NPT Diameter Wt. lb.
WTC 18 12-3/8 13 6 5 12 - 3 - - 3/4 9 16
WTC 24 12-3/8 13 6 6-1/2 12 - 3 - - 3/4 9 20
WTC 33 16-3/8 17-1/2 8-3/4 6-1/2 12-1/4 11 3-5/8 6 - 1-1/4 12 34
WTC 47 16-3/8 17-1/2 8-3/4 8 12-1/4 11 3-5/8 6 - 1-1/4 12 36
WTC 63 20-7/16 21-1/2 8-3/4 8 12-3/4 15 3-5/8 6 - 1-1/4 14 48
WTC 86 20-7/16 21-1/2 8-3/4 9 12-3/4 15 3-5/8 6 - 1-1/4 14 52
WTC 108 24-7/16 25-1/2 9-1/2 8 11-1/2 18 3-3/4 6-3/8 - 1-1/4 18 74
WTC 121 24-7/16 25-1/2 9-1/2 7-1/2 11 18 3-3/4 6-3/8 - 1-1/4 18 76
WTC 165 30-1/2 30-1/2 9-1/4 9-1/2 14 21-1/4 3-3/4 6-3/8 - 1-1/4 22 92
WTC 193 30-1/2 30-1/2 9-1/4 9-1/2 14 21-1/4 3-3/4 6-3/8 - 1-1/4 22 98
WTC 258 38-1/2 38-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 7-7/8 - 1-1/4 22 162
WTC 290 38-1/2 38-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 7-7/8 - 1-1/4 24 168
WTC 340 38-1/2 44-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 7-7/8 - 1-1/4 24 176
WSC 18 11-1/2 12-3/4 6 5 12 5-5/8 2-1/4 4-1/8 7-1/2 1/2 9 16
WSC 24 11-1/2 12-3/4 6 6-1/2 12 5-5/8 2-1/4 4-1/8 7-1/2 1/2 9 20
WSC 33 15 17-1/2 8-3/4 6-1/2 12-1/4 11 3-5/8 6 10 3/4 12 34
WSC 47 15 17-1/2 8-3/4 8 12-1/4 11 3-5/8 6 10 3/4 12 35
WSC 63 18-1/2 21-1/2 8-3/4 8 12-3/4 15 3-5/8 6 14 3/4 12 48
WSC 86 18-1/2 21-1/2 8-3/4 9 12-3/4 15 3-5/8 6 14 3/4 14 52
WSC 108 22-1/2 25-1/2 9-1/2 8 11-1/2 18 3-5/8 6-3/8 18 3/4 18 74
WSC 121 22-1/2 25-1/2 9-1/2 7-1/2 11 18 3-5/8 6-3/8 18 3/4 18 76
WSC 165 26-1/2 29-1/2 9-1/4 9-1/2 14 21-1/4 3-5/8 6-3/8 22 3/4 22 92
WSC 193 30-1/2 32-1/2 9-1/4 9-1/2 14 21-1/4 3-5/8 4-3/4 26 1-1/4 22 98
WSC 258 38-1/2 38-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 8 34 1-1/4 22 163
WSC 290 38-1/2 38-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 8 34 1-1/4 24 168
WSC 340 38-1/2 44-1/2 12-1/2 10-1/2 14 18-1/2 3-5/8 8 34 1-1/4 24 176
➀All dimensions in inches.
Dimensions shown are for Standard and Low Outlet Temperature Models.
Figure 12.1 - Model Dimensions WTC 18-193
Figure 12.3 - Model Dimensions WSC 18-165
MOUNTING HOLES
SIZES 33-86, 3/8"-16 TAP
SIZES 108-193, 1/2"-13 TAP
A
C5"
MIN
D
B
EF (PIPE
CONNECTIONS)
G (MOUNTING
HOLES)
MOUNTING HOLES
SIZES 33-86, 3/8"-16 TAP
SIZES 108-165, 1/2"-13 TAP
A
C5"
MIN
D
B
E
G (MOUNTING
HOLES)
H (PIPE
CONNECTION)
Figure 12.2 - Model Dimensions WTC 258-340
Figure 12.4 - Model Dimensions WSC 193-340 ➀
F
G
H
5"
Min.
D
C
B
E
AWall
Pipe
Connections
Mounting Holes
Mounting Holes
1/2" - 13 Tap
FG
5"
Min.
D
C
B
E
A
Wall
Mounting Holes
1/2" - 13 Tap
Mounting Holes
Pipe
Connections
➀ Vertical deflector blades shown are standard on models WSC 258-340
and optional on model WSC 193.

AIR 1-550.30
Model Cone-Jet Truncone Louvers
Number L T M X P Z
WVC 42, WVC 59 6-1/2 18-7/8 12 22 6-1/2 16-7/8
WVC 78, WVC 95 6-1/2 18-7/8 12 22 6-1/2 16-7/8
WVC 139, WVC 212 7-1/2 24-3/4 13 27 7-1/2 19-3/4
WVC 247, WVC 279 8 26-7/8 16 34 8 22-3/4
WVC 333 8-1/2 28 16 34 8-1/2 22-3/4
WVC 385, WVC 500 10 22-3/4 21 41 10 27-3/4
WVC 610 10-1/2 36-3/4 21 41 10-1/2 30-3/4
WVC 952 - - - - 19-1/2 32
DIMENSIONAL DATA
13
Table 13.1 - Model WVC/WVN and WPC/WPN Dimensions ➀ ➁ ➂
Figure 13.1 - Model Dimensions WVC/WVN and WPC/WPN
➀All dimensions in inches.
➁Dimensions shown are for Standard and Low Outlet Temperature Models.
➂See Table 13.2 for optional air outlet accessory dimensions.
Table 13.2 - Vertical Air Outlet Accessories Dimensions ➀
➀All dimensions in inches.
Male
Connections Approx.
Model Fan NPT Shipping
Number A B C D E F G Diameter Top Bottom Wt. (lb.)
WVC/WVN 42 24-3/4 3-5/8 11-3/8 2-1/8 4-3/8 14-1/2 - 14 1-1/4 1-1/4 36
WVC/WVN 59 24-3/4 5-1/8 11-3/8 2-1/8 4-3/8 14-1/2 - 14 1-1/4 1-1/4 42
WVC/WVN 78 24-3/4 6-5/8 11-3/8 2-1/8 2-5/8 16-1/2 - 16 1-1/4 1-1/4 46
WVC/WVN 95 24-3/4 8-1/8 11-3/8 2-1/8 2-5/8 16-1/2 - 16 1-1/4 1-1/4 48
WVC/WVN 139 34-3/4 6-7/8 18-3/8 2-1/8 3 19-1/2 - 19 1-1/2 1 70
WVC/WVN 161 34-3/4 8-3/8 18-3/8 2-1/8 3 19-1/2 - 19 1-1/2 1 80
WVC/WVN 193 34-3/4 9-7/8 18-3/8 2-1/8 3 19-1/2 - 19 1-1/2 1 86
WVC/WVN 212 34-3/4 12-7/8 18-3/8 2-1/2 3 19-1/2 - 19 2 1-1/4 94
WVC/WVN 247 34-3/4 12-7/8 18-3/8 2-1/2 3 21-1/2 - 21 2 1-1/4 108
WVC/WVN 279 34-3/4 14-3/8 18-3/8 2-1/2 3 21-1/2 - 21 2 1-1/4 112
WVC/WVN 333 43-1/4 14-5/8 31-1/2 2-7/8 3-1/8 22-1/2 18-1/5 22 2-1/2 1-1/2 166
WVC/WVN 385 43-1/4 14-1/2 31-1/2 2-7/8 3-1/2 27-1/2 18-1/5 27 2-1/2 1-1/2 168
WVC/WVN 500 43-1/4 19 31-1/2 2-7/8 3-1/2 27-1/2 18-1/5 27 2-1/2 1-1/2 360
WVC/WVN 610 51-1/2 19-1/8 31-3/8 - 3-3/4 30-1/2 31-3/8 30 2-1/2 1-1/2 450
WVC 952 53-3/4 21-1/8 30 - 3-1/2 31 30 30 3 3 487
WPC/WPN 279 34-3/4 22-5/8 25-1/4 16-3/4 16-3/4 - - 21 2 1-1/4 122
WPC/WPN 333 43-1/4 23-7/8 30 15-3/4 14-3/8 - - 22 2-1/2 1-1/2 176
WPC/WPN 385 43-1/4 25-3/4 30 15-3/4 14-3/8 - - 27 2-1/2 1-1/2 184
WPC/WPN 500 43-1/4 29 30 20-1/4 14-3/8 - - 27 2-1/2 1-1/2 376
WPC/WPN 610 51-1/2 29-5/8 30 20-3/8 21 - - 30 2-1/2 1-1/2 472
WPC 952 53-3/4 26-3/8 30 23-1/8 26-7/8 - - 30 3 3 487
Vertical Air Delivery
Air Deflectors (Optional)
“Power-Throw” Air Delivery
WVC/WVN 42 Thru WVC/WVN 279
Male Return
Male Return
WVC/WVN-333,
WVC/WVN-385,
WVC/WVN-500
WVC/WVN 333,
WVC/WVN 385,
WVC/WVN 500
Male Return
WVC/WVN
610-952
Male Supply
WPC 610
Only
Hanger
Bracket for
WPC 279
Only
WVC/WVN 610/952
WVC/WVN 333 Thru WVC/WVN 952

AIR 1-550.30
Heating equipment should be serviced before each heating
season to assure proper operations. The following items may be
required more frequently based on the environment in which the
unit is installed and frequency of equipment operation.
All installation and service of these units must be
performed by a qualified installation and service agency.
Before any service, BE SURE TO TURN OFF THE STEAM
OR WATER SUPPLY AT THE MANUAL SHUT-OFF VALVES
AND TURN OFF ALL ELECTRIC POWER TO THE HEATER.
MOTOR DATA / SERVICE
14
Motors
1. Remove grease and dirt on motor during each inspection or
lubrication. Open frame motors should be blown clean every
heating season, or whenever coils are cleaned, whichever is
sooner.
2. Lubricate motor according to manufacturer’s instructions
located on the motor. When no motor oiling instructions are
on the motor, oil the motor every two thousand hours of
operation with SAE20 motor oil for units in normal
applications. Adjust oiling according to usage and atmosphere.
3. Some motors do not have oil fittings. These motors are
lubricated for long life and do not require further lubrication.
4. A change in line voltage higher or lower than motor nameplate
rating may cause overheating and serious motor damage.
Check plant voltage conditions. A separate manual starter
with thermal overload protection device is recommended for
those units that do not have motors with built-in overload
protection.
Coils
1. Clean coil at least once a year; more often under unfavorable
conditions. Unless coil is kept reasonably free of dirt, lint and
grease, its original heating capacity will be reduced —
possibly to a serious degree, and motor damage may result.
Two commonly used cleaning methods are:
 •Loosendirtbybrushingfinsonsidewhereairenterscoil
and then turn on fan to blow dirt from unit.
 •Usehighpressureairhosetoloosendirtbyblowingfrom
side where air leaves coil (side adjacent to louvers on blow-
through units; side adjacent to fan on draw-through units).
IMPORTANT
To check most of the Possible Remedies in the troubleshooting
guide listed in Table 15.1, refer to the applicable sections of
the manual.
WARNING
When servicing or repairing this equipment, use only factory-
approved service replacement parts. A complete replacement
parts list may be obtained by contacting Modine Manufacturing
Company. Refer to the rating plate on the unit for complete
unit substitution of parts or controls not approved by the
factory will be at the owner’s risk.
CAUTION
1. Service or repair of this equipment must be performed by a
qualified service agency.
2. Do not reuse any electrical component which has been wet.
Replace component.
SERVICE

AIR 1-550.30 15
SERVICE / TROUBLESHOOTING
Fails to Maintain Temperature
1. Undersized unit heater, boiler, pump or piping.
2. Unit heater operating at low speed when sized for high speed.
3. Unit heater mounted too high — heated air not delivered to floor.
4. Thermostat — improper location or setting, or not functioning.
5. Dirty or clogged coil.
Unit Blows Cold Air
1. Manual shut-off valve closed.
2. Insufficient steam pressure of lack of hot water.
3. Aquastat not functioning.
4. Improper venting.
5. Steam trap not functioning.
6. Drip leg too short (steam system).
7. Return line plugged (steam system).
8. Pump undersized or not operating (hot water system).
Does Not Operate When Heat Needed
1. Defective motor or electrical connections.
2. Thermostat, aquastat or pressure limit control not functioning.
Fails to Deliver Heat to Floor
1. Units mounted too high.
2. Operating on low speed.
3. Final air temperature too high.
4. Louvers not adjusted properly.
5. Wrong type of diffuser (on verticals).
6. Undersized unit heater (insufficient air delivery).
7. Wrong type of unit (may require vertical delivery).
8. Cross ventilation or drafts.
9. Obstructions to air flow.
Noisy Unit
1. Loose bolts or screws.
2. Fan blade bent, out of balance.
3. Dirt accumulation on fan blades.
4. Fan hub or blade rivets loose.
5. Motor shaft bearing worn.
6. Motor mounting bent, fan not positioned properly in venturi.
7. Conduit too rigid, transmits vibration noise.
8. BX cable touching unit heater, chatters as casing vibrates.
Employees Complain of Hot Blast
1. Air stream aimed directly at employees.
2. Louvers not adjusted properly.
3. Wrong type of diffuser (on verticals).
4. Excessive final air temperature.
Unit Operates Too Long
1. Thermostat installed on cold wall or other improper location.
2. Aquastat or pressure limit control not functioning properly.
3. Unit is undersized.
Frequent Motor Failure
1. Voltage fluctuations too high or too low.
2. Excessive or insufficient lubrication.
3. Wiring to motor undersized.
4. Improper electrical connections.
5. Motor operating in too high air temperature.
6. Restricted air flow due to clogged coil or closed louvers.
7. Fan out of balance.
8. Unbalanced voltage on 3φpower.
Coil Failure/Unit Leaks
1. Severe internal corrosion from feedwater.
2. Type of boiler treatment.
3. Entrained air causing water hammer.
4. Continuous operation above 150 PSI (375°F)(steam systems).
5. Loose connection.
Table 15.1 - Troubleshooting
Replacement Parts
When requesting parts please contact your local representative.
Please have full model and serial number available. See
Figure 15.1.
2. For thorough cleaning of coil, remove motor and fan and
spray a mild alkaline cleaning solution over the coil. After a
few minutes, follow by a hot water rinse. (A steam gun can be
used for spraying cleaning solution and hot water.)
3. Coils subjected to corrosive fumes should be checked and
cleaned frequently.
4. Provide controlled water treatment — don’t use excess of
boiler compounds. Contact your boiler compound supplier for
proper usage or the services of a water treatment laboratory.
5. Periodic internal flushing of the coils is recommended in
areas where water supply is suspected of causing scale. Use
an alkaline-chelant solution and introduce it at the main pump
of the hydronic system. Flush thoroughly.
WARNING: USING INORGANIC OR MINERAL ACIDS SUCH
AS MURIATIC (HYDROCHLORIC) ACID, EVEN THOUGH
INHIBITED, MAY LEAD TO SEVERE DAMAGE, INCLUDING
CORROSION AND LEAKAGE.
6. De-aerate boiler feed-water (particularly if large amount of
new water is used).
7. Insure rapid continuous and adequate condensate drainage
by properly sized and installed traps and piping. Check traps
for sticking. Clean strainers ahead of traps. (When traps
don’t work, condensate accumulates in unit heater coil; water
hammer results.)
8. Adequately vent each unit.
9. Use low pressure steam when possible.
Casings
1. Periodic cleaning of casings is recommended to remove
dirt, grease and corrosive substances that may injure finish.
Rusted or corroded spots should be cleaned and repainted.
2. Tighten fan guard and motor bracket. Check fan for proper
clearance, free rotation and firm connection to shaft.
When servicing is complete, tag unit to indicate date of
inspection, lubrication and cleaning.

Modine Manufacturing Company
1500 DeKoven Avenue
Racine, WI 53403
Phone: [phone] (toll free)
www.modinehvac.com
© Modine Manufacturing Company 2017
As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice.
COMMERCIAL WARRANTY
Seller warrants its products to be free from defects in material and
workmanship, EXCLUSIVE, HOWEVER, of failures attributable to the use
of materials substituted under emergency conditions for materials normally
employed. This warranty covers replacement of any parts furnished from the
factory of Seller, but does not cover labor of any kind and materials not
furnished by Seller, or any charges for any such labor or materials, whether
such labor, materials or charges thereon are due to replacement of parts,
adjustments, repairs, or any other work done. This warranty does not apply to
any equipment which shall have been repaired or altered outside the factory of
Seller in any way so as, in the judgment of Seller, to affect its stability, nor
which has been subjected to misuse, negligence, or operating conditions in
excess of those for which such equipment was designed. This warranty does
not cover the effects of physical or chemical properties of water or steam or
other liquids or gases used in the equipment.
BUYER AGREES THAT SELLER’S WARRANTY OF ITS PRODUCTS TO BE
FREE FROM DEFECT IN MATERIAL AND WORKMANSHIP, AS LIMITED
HEREIN, SHALL BE IN LIEU OF AND EXCLUSIVE OF ALL OTHER
WARRANTIES, EITHER EXPRESS OR IMPLIED, WHETHER ARISING
FROM LAW, COURSE OF DEALING, USAGE OF TRADE, OR OTHERWISE,
THERE ARE NO OTHER WARRANTIES, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PURPOSE, WHICH EXTEND
BEYOND THE PRODUCT DESCRIPTION CONFIRMED BY BUYER AND
SELLER AS OF THE DATE OF FINAL AGREEMENT.
This warranty is void if the input to the product exceeds the rated input as
indicated on the product serial plate by more than 5% on gas-fired and oil-fired
units, or if the product in the judgment of SELLER has been installed in a
corrosive atmosphere, or subjected to corrosive fluids or gases, been subjected
to misuse, negligence, accident, excessive thermal shock, excessive humidity,
physical damage, impact, abrasion, unauthorized alterations, or operation
contrary to SELLER’S printed instructions, or if the serial number has been
altered, defaced or removed.
BUYER AGREES THAT IN NO EVENT WILL SELLER BE LIABLE FOR
COSTS OF PROCESSING, LOST PROFITS, INJURY TO GOODWILL, OR
ANY OTHER CONSEQUENTIAL OR INCIDENTAL DAMAGES OF ANY KIND
RESULTING FROM THE ORDER OR USE OF ITS PRODUCT, WHETHER
ARISING FROM BREACH OF WARRANTY, NONCONFORMITY TO
ORDERED SPECIFICATIONS, DELAY IN DELIVERY, OR ANY LOSS
SUSTAINED BY THE BUYER.
BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL
OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR
REPLACEMENT AT THE FACTORY OF SELLER, ANY COMPONENT WHICH
SHALL, WITHIN THE APPLICABLE WARRANTY PERIOD DEFINED HEREIN
AND UPON PRIOR WRITTEN APPROVAL, BE RETURNED TO SELLER
WITH TRANSPORTATION CHARGES PREPAID AND WHICH THE
EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE;
EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY BUYER AS A
COMPONENT PART OF EQUIPMENT MANUFACTURED BY BUYER,
BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE
LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER. FOR
GAS-FIRED PRODUCTS INSTALLED IN HIGH HUMIDITY APPLICATIONS
AND UTILIZING STAINLESS STEEL HEAT EXCHANGERS, BUYER’S
REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO
TEN YEARS FROM DATE OF SHIPMENT FROM SELLER.
These warranties are issued only to the original owner-user and cannot be
transferred or assigned. No provision is made in these warranties for any
labor allowance or field labor participation. Seller will not honor any expenses
incurred in its behalf with regard to repairs to any of Seller’s products. No
credit shall be issued for any defective part returned without proper written
authorization (including, but not limited to, model number, serial number,
date of failure, etc.) and freight prepaid.
OPTIONAL SUPPLEMENTAL WARRANTY
Provided a supplemental warranty has been purchased, Seller extends the
warranty herein for an additional four (4) years on certain compressors.
Provided a supplemental warranty has been purchased, Seller extends the
warranty herein for an additional four (4) years or nine (9) years on certain
heat exchangers.
EXCLUSION OF CONSUMABLES & CONDITIONS BEYOND SELLER’S
CONTROL
This warranty shall not be applicable to any of the following items: refrigerant
gas, belts, filters, fuses and other items consumed or worn out by normal wear
and tear or conditions beyond Seller’s control, including (without limitation as
to generality) polluted or contaminated or foreign matter contained in the air or
water utilized for heat exchanger (condenser) cooling or if the failure of the part
is caused by improper air or water supply, or improper or incorrect sizing of
power supply.
Component
Applicable Models “APPLICABLE WARRANTY PERIOD”
Heat Exchangers
Gas-Fired Units
Heat Exchangers
Low Intensity Infrared Units
Compressors
Condensing Units for Cassettes
Burners
Low Intensity Infrared Units
Other
Components excluding Heat Exchangers,
Coils, Condensers, Burners, Sheet Metal
Heat Exchangers/Coils
Indoor and Outdoor Duct Furnaces and
System Units, Steam/Hot Water Units,
Oil-Fired Units, Electric Units, Cassettes,
Vertical Unit Ventilators, Geothermal Units
Compressors
Vertical Unit Ventilators, Geothermal Units
Burners
High Intensity Infrared Units
Sheet Metal Parts
All Products
TEN YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
TEN YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS
FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN ONE
HUNDRED TWENTY-SIX MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER
OCCURS FIRST
FIVE YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
FIVE YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS
FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN SIXTY-SIX
MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST
TWO YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
TWO YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN
THIRTY MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST
ONE YEAR FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
ONE YEAR FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN
EIGHTEEN MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST