Modine 246443 User Manual
1-550.29
5H0707180000
February, 2015
INSTALLATION AND SERVICE MANUAL
steam/hot water unit heaters
Model HSB
Horizontal Delivery
Top/Bottom
Inlet/Outlet
Models V/VN
Vertical Delivery
Model HC
Horizontal Delivery
Side
Inlet/Outlet
Model PT/PTN
“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.
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).
C
US
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. gauge, 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) requriements 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 V/PT 952.
CAuTION
Do not remove outlet fan guard from vertical
type unit heaters.
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 HSB 63 has an output of 63,000
Btu/Hr. at 2 lbs. steam and 60°F entering air.
THIS MANUAL IS THE PROPERTY OF THE OWNER.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.
SPECIAL PRECAUTIONS / TABLE OF CONTENTS / SI (METRIC) CONVERSION
FACTORS
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.
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.
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
Motor Ampere Ratings ........................................................ 14
Service................................................................................ 14
Service / Troubleshooting ................................................... 15
Warranty ................................................................Back Page
SI (METRIC) CONVERSION FACTORS
Table 2.1
To Convert Multiply By To Obtain
"W.C. 0.249 kPa
°F (°F-32) x 5/9 °C
Btu 1.06 kJ
Btu/ft
Btu/hr 0.000293 kW
CFH (ft
CFH (ft
3
/min) 0.0283 m3/min
CFM (ft
3
/min) 0.000472 m3/s
CFM (ft
IMPORTANT
3
37.3 kJ/m
3
/hr) 0.000472 m3/min
3
/hr) 0.00000787 m3/s
3
To Convert Multiply By To Obtain
feet 0.305 m
Gal/Hr. 0.00379 m
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.
3
/hr
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.
2
1-550.29
UNIT LOCATION / UNIT MOUNTING
UNIT LOCATION
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.
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.
Figure 3.1 - Horizontal Delivery Unit Location
Figure 3.3 - Combination Horizontal and Vertical
Delivery Unit Installation
UNIT MOUNTING
CAuTION
Do not install units below 8 feet measured from the bottom of
the unit to the floor.
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.
Figure 3.2 - Unit Locations of Vertical Units In
Narrow Buildings
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.
1-550.29
3
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
Steam Pressure
25 10 20 30 50 70 100
150
UNIT MOUNTING
Table 4.1 - Maximum Mounting Heights
Vertical Type with Deectors
Horizontal Type Power-Throw Type
Height (ft)
Model No.
HSB/HC 18 8 9 — — — V/VN 42 11 13 15 17 8 9 13 15
HSB/HC 24 9 11 — — — V/VN 59 14 16 19 22 9 11 16 18
HSB/HC 33 10 12 — — — V/VN 78 15 19 20 26 11 14 17 22
HSB/HC 47 12 14 — — — V/VN 95 15 19 20 26 11 14 17 22
HSB/HC 63 14 16 — — — V/VN 139 18 23 24 31 13 17 21 26
HSB/HC 86 15 17 — — — V/VN 161 20 26 27 35 14 18 23 30
HSB/HC 108 17 19 — — — V/VN 193 22 27 30 36 16 19 25 31
HSB/HC 121 16 18 — — — V/VN 212 22 27 30 36 16 19 25 31
HSB/HC 165 19 21 — — — V/VN 247 26 32 34 42 17 21 30 37
HSB/HC 193 18 — PT/PTN 279 16 — V/VN 279 30 36 37 45 18 22 35 41
HSB/HC 258 19 22 PT/PTN 333 17 — V/VN 333 30 36 37 45 17 20 35 41
HSB/HC 290 20 23 PT/PTN 385 17 — V/VN 385 30 36 36 43 17 20 35 41
HSB/HC 340 20 23 PT/PTN 500 18 — V/VN 500 37 45 44 54 19 24 42 51
— — — PT/PTN 610 20 22 V/VN 610 36 44 43 52 19 24 41 50
— — — PT 952 21 — V 952 37 45 — — — — — —
➀ With horizontal louvers opened 30° from the vertical plane. HSB units have top and bottom piping connections, HC 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.
Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T.
Model No.
Height (ft)
No Deector Cone-Jet Truncone Louvers
Height (ft) Height (ft) Height (ft) Height (ft)
Model No.
Figure 4.2 - Maximum Mounting Heights Correction Factors
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.
Figure 4.3 - Horizontal Unit Delivery
H
Figure 4.4 - Vertical One-Way & Two-Way Louvers
H
H
Figure 4.3 - Vertical Cone Jet
H
4
H
Figure 4.6 - Vertical Truncone
H
1-550.29
UNIT SUSPENSION / INSTALLATION
UNIT SUSPENSION
Horizontal delivery units, Model HSB/HC Series. All horizontal
delivery units, except Models HSB 18 and HSB 24, have two
tapped holes in the top for unit suspension. HSB 18 and HSB 24
models do not require independent suspension and are installed
directly on their supply piping. Models HSB 33-86 and HC 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 V/VN 42
through V/VN 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 V/VN 333 through V/VN 952 are equipped with an angleiron 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 PT/PTN 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 PT/PTN 333
through PT/PTN 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 hookhoisting 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 HSB or
HC models, two kits are required for V/VN models.
Figure 5.1 - Unit Suspension
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
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
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.
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.
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.
1-550.29
5
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