Sterling VS User Manual

INSTALLATION INSTRUCTIONS & PARTS LIST

VERTICAL STEAM AND HOT WATER UNIT HEATERS

ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE
OF GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT
POINT OF INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED.
RETAIN FOR FUTURE REFERENCE.

VISM-9

J30-05403

Model No.

Serial No.

Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
injury or death. Read the installation, operating and
maintenance instructions thoroughly before installing or
servicing this equipment.

INSTALLER’S RESPONSIBILITY

Installer Please Note: This equipment has been tested and

inspected. It has been shipped free from defects from our
factory. However, during shipment and installation, problems
such as loose wires, leaks or loose fasteners may occur. It is

the installer’s responsibility to inspect and correct any
problems that may be found.

RECEIVING INSTRUCTIONS

Inspect shipment immediately when received to determine if
any damage has occurred to the unit during shipment. After
the unit has been uncrated, check for any visible damage to the
unit. Turn fan by hand to determine if damage has occurred.
If any damage is found, the consignee should sign the bill of
lading indicating such damage and immediately fi le claim for
damage with the transportation company.

04/13

260 NORTH ELM ST., WESTFIELD, MA 01085

TEL: [phone] FAX: [phone]

www.mestek.com

TABLE OF CONTENTS

GENERAL SAFETY INFORMATION ..........................3

SPECIFICATIONS

Dimensional Data ..................................................4

Mounting Specifi cations ................3, 4, 7, 15-18, 27

Steam Performance Data ................................... 5, 6

Steam Calculations & Correction Factors ............... 7

Hot Water Performance Data ............................8-11

Hot Water Calculations & Correction Factors ......12

Technical Data ..................................................... 13

Motor Data ........................................................... 14

INSTALLATION

Locating Units ..................................................15-18

Piping ....................................................................19

NOTICE: It is the owner’s responsibility to provide any scaffolding or other apparatus required to perform
emergency service or annual/periodic maintenance to this equipment.

ELECTRICAL CONNECTIONS ................................ 20

Operation .............................................................20

Thermostat Wiring and Location ..........................20

Motors ..................................................................20

WIRING INSTALLATION .................................... 21, 22

OPTIONS .................................................................23

MAINTENANCE .......................................................24

TROUBLESHOOTING GUIDE ..................................25

INSPECTION SHEET ................................................25

WARRANTY ..............................................................26

OSHA FAN GUARD/LOUVER CONE DIFFUSER

INSTALLATION .........................................................27

DESCRIPTION

Vertical hydronic unit heaters are designed for installation
requiring down fl ow air deliver y, offered in 15 sizes ranging
from 41,300 to 705,000 BTU/Hr., and use with steam or hot
water. Low output (increased airfl ow) units are available for

high ceiling applications.The designs are certifi ed by ETL.

Do not alter these units in any way and do not attach
any ductwork to these units. If you have any questions

after reading this manual, contact the manufacturer.

Figure 1

The following terms are used throughout this manual, in addition to ETL requirements, to bring attention to the pres­ence of potential hazards or to important information concerning the product:

Indicates an imminently hazardous
situation which, if not avoided, will result in death,
serious injury or substantial property damage.

Figure 2

Indicates an imminently hazardous
situation which, if not avoided, may result in minor
injury or property damage.

Indicates an imminently hazardous
situation which, if not avoided, could result in
death, serious injury or substantial property
damage.

NOTICE: Used to notify of special instructions on
installation, operation or maintenance which are
important to equipment but not related to personal
injury hazards.

2

GENERAL SAFETY INFORMATION

Failure to comply with the general
safety information may result in extensive property
damage, severe personal injury or death.

Do not alter the unit heater in any
way or damage to the unit and/or severe personal
injury or death may occur!

Disconnect all power supplies
before installing or servicing the heater. If the
power disconnect is out of sight, lock it in the
open position and tag it to prevent unexpected
application of power. Failure to do so could result
in fatal electric shock, or severe personal injury.

Ensure that all power sources
conform to the requirements of the unit heater
or damage to the unit will result!

Follow installation instructions CAREFULLY to avoid
creating unsafe conditions. All external wiring must
conform to applicable current local codes, and to the
latest edition of the National Electric Code, ANSI/NFPA
No. 70. In Canada, all external wiring must conform
to the Canadian Electric Code, Part 1 CSA Standard
C22.1. All wiring should be done and checked by a
qualifi ed electrician, using copper wire only. All steam
or water connections should be made and leak-tested
by a suitably qualifi ed individual, per instructions in
this manual. Also follow procedures listed on the “Unit
Equipment Start-Up Sheet” located in this manual.

Make certain that the power source conforms to the
electrical requirements of the heater.

Do not depend upon a thermostat
or other switch as sole means of disconnecting
power when installing or servicing heater. Always
disconnect power at main circuit breaker as
described above. Failure to do so could result in
fatal electric shock.

Special attention must be given to any grounding
information pertaining to this heater. To reduce the risk of
electrocution, the heater must be securely and adequately
grounded. This should be accomplished by connecting a
grounded conductor between the service panel and the
heater. To ensure a proper ground, the grounding means
must be tested by a qualifi ed electrician.

Do not insert fi ngers or foreign objects into the heater
or its air moving device. Do not block or tamper with the
heater in any manner while in operation or just after it
has been turned off, as some parts may be hot enough
to cause injury.

It is recommended to install a shutoff switch in the electri­cal power lines at the heater. Whenever a unit is serviced,
shut power off to the unit.

Since these units are installed in most instances higher
than 8 feet, proper type of ladders or scaffolding should
be used, as set up by OSHA requirements; see notice
on page 2. Never place a ladder against the unit for sup­port.

In industrial plants, professional maintenance crews
should service this equipment.

All Vertical Unit Heaters are shipped fully assembled and
may be used for steam or hot water applications. Coils
are factory tested at 400 psig air under water. Fans are
balanced and motors are prelubricated.

Each unit is packaged individually and marked for proper
identifi cation. Use normal care in handling and during
installation to prevent damage to the coils fi ns, fan and
casing. Do not set Vertical Unit Heater on fl oor with the
weight of the unit resting against the fan blades. In this
position, the blades may be damaged.

Unless otherwise specifi ed, the following conversions
may be used for calculating SI unit measurements:
1 foot = 0.305 m
1 inch = 25.4 mm
1 psig = 6.894 kPa
1 pound = 0.453 kg
1 gallon = 3.785 L

1 inch water column = 0.249 kPa
meter/second = FPM ÷ 196.8
liter/second = CFM x 0.472
1000 Btu per hour = 0.293 kW
1000 Btu/Cu. Ft. = 37.5 MJ/m
1 cubic foot = 0.028 m

3

3

To meet ETL and OSHA requirements, units mounted
below 8 feet from the fl oor must be equipped with an
OSHA fan guard.

3

CEILING

S

B

F

P

P

C

E

L

D

T

T

STEAM

SUPPLY

OR

HOT WATER

RETURN

STEAM

RETURN

OR

HOT WATER

SUPPLY

V

V

UA

A

GR

H

K

K

H

R

(4) MOUNTING HOLES 3/8 - 16 FOR MODELS 104-367

THREAD TAPS

1

/2 - 13 FOR MODELS 495-700

CEILING

S

B

F

P

P

C

E

L

D

T

T

STEAM

SUPPLY

OR

HOT WATER

RETURN

STEAM

RETURN

OR

HOT WATER

SUPPLY

V

R

G A

A

GR

K

H

K

H

R

(4) MOUNTING HOLES

THREAD TAPS

3

/8 - 16 FOR MODELS 40-77

DIMENSIONAL DATA

Figure 3 - Models 40-77 Figure 4 - Models 104-700

Table 1 – Figure 3 Roughing in Dimensional Data – Model Size 40-77

Unit

Capacity

(MBH)

040
062
077

Fan

Dia.
111/
131/
131/

B

A

4

4

181/

2

4

211/

2

4

211/

45/
45/
61/

C

D

8

4

4

113/
141/
145/

13/

13/

2

11/

8

11/

8

8

15/

8

8

15/

F

E

4

4
4

4

3

4

11
14
14

H

G

13/
13/
13/

K

(Min)

8

8

17/

8

8

17/

8

8

17/

P

L

11
14
14

V

U

8

35/

8

35/

8

35/

T

S
11/
11/
11/

R

4

8

8

2

35/

8

2

35/

8

2

35/

65/
71/
85/

23/

4

8

23/

4

8

23/

(NPT)
7
7
7

Table 2 - Figure 4 Roughing in Dimensional Data – Model Size 104-700

Unit

P

Capacity

(MBH)

104
125
144
164
200
237
285
317
367
495
585
700

Fan

Dia.
163/
163/
193/
193/
193/
251/
251/
251/
251/
301/
301/
301/

A

4

4

251/

61/

4

4

251/

61/

2

4

291/

61/

2

4

291/

61/

2

4

291/

75/

2

4

371/

75/

2

4

371/

75/

2

4

371/

75/

2

4

371/

91/

2

421/

91/

2

2

421/

2

421/

121/

2

135/

2

B

C

8

21/
21/
23/
23/
23/
31/
31/
31/
31/
31/
31/
31/

171/

2

171/

2

8

205/

8

205/

8

205/
263/

2

263/

2

263/

2

263/

2

2

311/

2

311/

2

311/

8

8

8

8

8

8

8

8

8

8

8

H
31/
31/
41/
41/
41/
31/
31/
41/
31/
31/
31/
41/

G

F

8

13/

171/

2

2

171/

2

2

2

201/

2

2

201/

2

2

201/

2

2

281/

2

2

281/

2

281/

2

2

2

281/

2

301/

2

2

301/

2

2

301/

2

2

13/
13/
13/
13/
13/
13/
13/
13/
21/
21/
21/

23/

8

23/

4

31/

4

31/

4

31/

4

31/

4

31/

4

31/

4

31/

4

41/

4

41/

4

41/

D

E

2

8

11/

2

4

13/

8

4

11/

8

4

13/

8

21/

2

8

11/

2

8

4

11/

8

8

21/

8

21/

2

4

8

15/

4

8

21/

4

31/

2

L

(NPT)

(Min)

K

4

7

4

7

2

7

2

7

2

7

2

7

2

7

2

7

2

7

4

7

4

7

4

7

11/
11/
21/
2/
2/
21/
21/
21/
21/
21/
21/
21/

R

2

8

91/

41/

2

8

93/

41/

2

95/

41/

2

2

101/

41/

12

2

121/

41/

12

4

115/

43/

2

4

113/

43/

2

4

123/

43/

2

4

141/

43/

2

2

2

2

61/
61/
61/

141/

2

173/

2

201/

2

T

S

4

8

23/

171/

4

4

23/

171/

4

8

23/

201/

4

8

23/

201/

4

23/
23/
23/
23/
23/
31/
31/
31/

201/

4

181/

4

181/

4

181/

4

181/
301/

2

301/

2

301/

2

2

8

4

4

8

4

4

4

V

U

1

8

4

/

2

8

41/

2

2

2

41/

2

2

41/

2

2

41/

4

93/

2

4

93/

2

4

93/

2

4

93/

2

61/

2

2

61/

2

2

61/

2

2

4

Table 3 - Standard Units

Unit

Capacity

(MBH)

040

062

077

104

125

144

164

200

237

285

317

367

495

585

700

Output

BTU/HR

(kW)

41,300

(12.1)

33,600

(9.8)

65,500

(19.2)

52,800

(15.5)

80,600

(23.6)

65,100

(19.1)

101,800

(29.8)

87,900

(25.8)

124,400

(36.4)

152,000

(44.5)

173,000

(50.7)

210,200

(61.6)

249,800

(73.2)

283,800

(83.2)

333,400

(97.7)

386,000

(113.1)

496,000

(145.3)

585,000

(171.4)

705,000

(206.6)

Condensate

STEAM PERFORMANCE DATA**

Final

Air

Temp °F

(°C)

124

(51)

131

(55)

121

(49)

129

(54)

122

(50)

130

(54)

123

(51)

129

(54)

124

(51)

123

(51)

121

(49)

118

(48)

115

(46)

119

(48)

119

(48)

118

(48)

117

(47)

117

(47)

119

(48)

HP

(kW)

1/40

(.019)

1/20

(.037)

1/20

(.037)

1/8

(.093)

1/6

(.124)

1/6

(.124)

1/6

(.124)

1/4

(.186)

1/4

(.186)

1/2

(.373)

3/4

(.559)

3/4

(.559)

1-1/2

(1.119)

1-1/2

(1.119)

3

(2.237)

lbs/hr

(kg/hr)

43

(19.5)

55

(24.9)

68

(30.8)

55

(24.9)

83

(37.6)

67

(30.4)

106

(48.0)

91

(41.2)

129

(58.4)

157

(71.1)

179

(81.1)

208

(94.2)

260

(117.8)

294

(133.2)

345

(156.3)

400

(181.2)

514

(232.8)

605

(274.1)

729

(330.2)

EDR

Sq. ft.

(Sq. m)

172

(16.0)

140

(13.0)

273

(25.4)

220

(20.5)

336

(31.3)

271

(25.2)

424

(39.4)

366

(34.0)

518

(48.2)

633

(58.9)

720

(67.0)

838

(78.0)

1040

(96.7)

1180

(109.8)

1390

(129.3)

1610

(149.8)

2070

(192.6)

2440

(227.0)

2940

(273.5)

Motor

RPM

1550

1150

1550

1150

1550

1150

1070

850

1100

1100

1100

1100

1100

1100

1140

1140

1175

1175

1165

Nominal

CFM

3

(m

/s)

595

(.278)

436

(.203)

989

(.462)

706

(.329)

1200

(.560)

858

(.400)

1490

(.695)

1180

(.551)

1790

(.835)

2220

(1.036)

2620

(1.223)

3200

(1.493)

4180

(1.951)

4430

(2.067)

5210

(2.431)

6140

(2.865)

8020

(3.743)

9450

(4.410)

11,000

(5.133)

Outlet

Velocity

FPM

(m/s)

877

(4.455)

658

(3.343)

1005

(5.105)

727

(3.693)

1220

(6.198)

894

(4.542)

980

(4.978)

783

(3.978)

1170

(5.944)

1045

(5.309)

1230

(6.248

1495

(7.595)

1205

(6.121)

1275

(6.477)

1500

(7.620)

1770

(8.992)

1640

(8.331)

1930

(9.804)

2250

(11.430)

Sound
Rating

I

II

II

II

III

III

IV

III

IV

IV

IV

IV

IV

IV

IV

EDR = Equivalent Direct Radiation
NOTES:
Constant speed units are rated at capacities shown in regular type; capacities shown in italic faced type apply
only to units with multi-speed motors.

** Performance data based on 2 lbs. steam pressure at heater with air entering @60°F.

To determine BTU per hour capacities at various steam pressures and entering air temperatures, use

correction factors from Table 5. Final temperatures at new conditions can be calculated by applying basic
formula.

5

STEAM PERFORMANCE DATA**

Table 4 - “Low Output” Standard Vertical Units with All Air Ports Open

Outlet

Velocity

FPM

(m/s)

950

(4.826)

672

(3.414)

1190

(6.045)

858

(4.359)

1350

(6.858)

992

(5.039)

1050

(5.334)

827

(4.201)

1390

(7.061)

1080

(5.486)

1340

(6.807)

1560

(7.925)

1270

(6.452)

1420

(7.214)

1610

(8.179)

1870

(9.500)

1860

(9.449)

2060

(10.465)

2380

(12.090)

Sound
Rating

II

II

III

III

IV

III

IV

IV

IV

IV

IV

IV

IV

Unit

Capacity

(MBH)

040L

062L

077L

104L

125L

144L

164L

200L

237L

285L

317L

367L

495L

585L

700L

Output

BTU/HR

(kW)

34,800

(10.2)

26,000

(7.6)

57,200

(16.8)

45,800

(13.4)

68,000

(19.9)

55,000

(16.1)

85,400

(25.0)

71,200

(20.9)

111,000

(32.5)

125,000

(36.6)

149,000

(43.7)

176,800

(51.8)

214,900

(63.0)

251,800

(73.8)

291,000

(85.3)

344,000

(100.8)

428,000

(125.4)

515,000

(150.9)

620,000

(181.7)

Condensate

lbs/hr

(kg/hr)

36

(16.3)

27

(12.2)

59

(26.7)

48

(21.7)

71

(32.2)

57

(25.8)

89

(40.3)

74

(33.5)

115

(52.1)

130

(58.9)

154

(69.8)

183

(82.9)

224

(101.5)

260

(117.8)

302

(136.8)

356

(161.3)

446

(202.0)

533

(241.4)

642

(290.8)

EDR

Sq. ft.

(Sq. m)

145

(13.5)

108

(10.0)

238

(22.1)

191

(17.8)

283

(26.3)

229

(21.3)

356

(33.1)

296

(27.5)

462

(43.0)

524

(48.7)

620

(57.7)

736

(68.5)

895

(83.3)

1050

(97.7)

1210

(112.6)

1430

(133.0)

1785

(166.0)

2140

(199.1)

2580

(240.0)

Final

Air

Temp °F

°C

108

(42)

111

(44)

104

(40)

109

(43)

106

(41)

111

(44)

108

(42)

111

(44)

107

(42)

109

(43)

107

(42)

108

(42)

104

(40)

106

(41)

107

(42)

108

(42)

102

(39)

106

(41)

108

(42)

HP

(kW)

1/40

(.019)

1/20

(.037)

1/20

(.037)

1/8

(.093)

1/6

(.124)

1/6

(.124)

1/6

(.124)

1/4

(.186)

1/4

(.186)

1/2

(.373)

3/4

(.559)

3/4

(.559)

1-1/2

(1.119)

1-1/2

(1.119)

3

(2.237)

Motor

RPM

1550

1150

1550

1150

1550

1150

1070

850

1100

1100

1100

1100

1100

1100

1140

1140

1175

1175

1165

Nominal

CFM

3

(m

/s)

668

(.312)

470

(.219)

1200

(.560)

862

(.402)

1360

(.635)

995

(.464)

1640

(.765)

1290

(.602)

2180

(1.017)

2360

(1.101)

2920

(1.363)

3390

(1.582)

4500

(2.100)

5040

(2.352)

5700

(2.660)

6600

(3.080)

9380

(4.377)

10,300

(4.807)

11,900

(5.553)

EDR = Equivalent Direct Radiation
NOTES:
Constant speed units are rated at capacities shown in regular type; capacities shown in italic faced type apply
only to units with multi-speed motors.

I

I

** Performance data based on 2 lbs. steam pressure at heater with air entering @60°F.

To determine BTU per hour capacities at various steam pressures and entering air temperatures, use

correction factors from Table 5. Final temperatures at new conditions can be calculated by applying basic
formula.

6

STEAM CALCULATIONS AND CORRECTION FACTORS

EXAMPLE: –
UNIT SIZE __________ 40
Steam Pressure ___ 10 PSI
Entering Air Temp. __ 40°F

I. CAPACITY

A. For 2 lbs. steam, 60°F entering air Read output directly from Table 3: 41,300 BTU/HR.

B. For higher steam pressures Multiply output from Table 3 by appropriate correction
and/or EAT’s above or below 60°F factor from Table 5 (below). 41,300 x 1.27 = 52,451 BTU/HR.

II. FINAL AIR TEMPERATURE

A. For 2 lbs. steam, 60°F entering air Read temperature directly from Table 3: 124°F.

B. For capacities calculated in IB (above) Output from IB

1.085 x CFM from Table 3 1.085 x 595

III. FINAL AIR VOLUME Nom. CFM Final
A. For 2 lbs. steam, 60°F entering air 460 + Final Air Temp from Table 3 from = Air 460+124
530 Table 3 Volume 530

Nom. CFM Final
B. For fi nal air temperatures calculated 460 + Final Air Temp from IIB from = Air 460+121.0
In IIB (above) 530 Table 3 Volume 530

IV. CONDENSATE PER HOUR

A. For 2 lbs. steam, 60°F entering air Read lbs. per hour from Table 3: 43 LBS./HR.

B. For capacities calculated in IB (above) Output from IB
Latent Heat From Table 6 953

TABLE 5 — STEAM CORRECTION FACTORS BASED ON 2 LBS. STEAM 60°F EAT

ENTERING AIR

TEMPERATURE °F (°C)

30° (-1°)
40° (4°)
50° (10°)
60° (16°)

70° (21°)
80° (27°)
90° (32°)
100° (38°)

0 (.0)

1.18

1.11

1.03

0.96

0.90

0.83

0.76

0.69

STEAM PRESSURE — LBS PER SQUARE INCH (SATURATED)

2 (13.8)

1.22

1.15

1.07

1.00

0.93

0.86

0.80

0.73

5 (34.5)

1.27

1.20

1.12

1.05

0.98

0.91

0.85

0.78

10 (68.9)

+ EAT = Final Air Temp

x

x

= lbs. per hour of condensate

15 (103.4)

1.34

1.27

1.19

1.12

1.05

0.98

0.91

0.85

1.40

1.32

1.25

1.18

1.11

1.04

0.97

0.90

52,451

52,451

20 (137.9)

1.45

1.37

1.30

1.23

1.16

1.09

1.02

0.96

30 (206.8)

1.53

1.46

1.39

1.32

1.25

1.18

1.11

1.04

40 (275.8)

1.61

1.53

1.46

1.39

1.32

1.25

1.18

1.11

= 55.0 LBS./HR.

50 (344.7)

1.67

1.59

1.52

1.45

1.38

1.31

1.24

1.17

+ 40 = 121.0°F

x 595 = 655 CFM

x 595 = 652 CFM

75 (517.1)

1.79

1.71

1.64

1.57

1.49

1.42

1.36

1.29

TABLE 6 — PROPERTIES OF SATURATED STEAM

STEAM PRESSURE IN LBS PER SQUARE INCH GAUGE

5 (34.5)

227.1

(108.4)

961

(2235)

10 (68.9)

239.4

(115.2)

953

(2217)

Steam
Temperature-°F (°C)
Latent Heat
of Steam-

Btu/lbm (KJ/Kg)

0 (.0)

212.0

(100.0)

970

(2256)

2 (13.8)

218.5

(103.6)

966

(2247)

NOTE 1: Ratings apply only to free inlet and discharge
without diffusers.

NOTE 2: All motors are constant speed and operate
at top speed as indicated in motor data. Sizes 40
through 104 can be run at reduced speed with
addition of optional variable speed switch. This
switch is factory-calibrated for low and high speed
ratings, with intermediate speeds infi nitely controllable.
Sizes 164 through 700 operate at constant speed as
indicated in motor data.

15 (103.4)

249.8

(121.0)

946

(2200)

20 (137.9)

258.8

(126.0)

940

(2186)

30 (206.8)

274.0

(134.4)

929

(2161)

40 (275.8)

286.7

(141.5)

920

(2140)

50 (344.7)

297.7

(147.6)

912

(2121)

75 (517.1)

319.9

(159.9)

891

(2072)

NOTE 3: For specifi c motor data refer to motor
specifi cations in Tables 13 and 14.

NOTE 4: To correct for entering air temperatures, use 1°
temperature rise for each foot in mounting height. As an
example, 60°F air is required at work area (5 ft. above
fl oor) units are to be mounted at (20 ft.) above fl oor.
Mounting height (20 ft.) minus work height (5 ft.) equals
differential (15 ft.) or, 15° rise in air temperature at unit
air inlet. Correct for actual inlet air temperature of 75°F
(60°F + 15°F = 75°F EAT) on Table 5.

7

HOT WATER PERFORMANCE DATA**

Table 7 - Standard Output Units

Flow
Rate
GPM

(L/s)

5.93

(.374)

2.34

(.148)

1.15

(.073)

4.71

(.297)

1.87

(.118)

.92

(.058)

9.92

(.626)

4.08

(.257)

2.14

(.135)

7.85

(.495)

3.24

(.204)

1.71

(.108)

12.11

(.764)

4.99

(.315)

2.62

(.165)

9.59

(.605)

3.97

(.250)

2.09

(.132)

15.91

(1.004)

7.03

(.443)

4.08

(.257)

13.13

(.828)

5.82

(.367)

3.38

(.213)

19.55

(1.233)

8.63

(.544)

4.98

(.314)

Pressure

Drop

ft/water

(m/water)

.37

(.113)

.06

(.018)

.02

(.006)

.24

(.073)

.04

(.012)

.01

(.003)

1.05

(.320)

.19

(.058)

.06

(.018)

.67

(.204)

.13

(.040)

.04

(.012)

.98

(.299)

.18

(.055)

.05

(.015)

.63

(.192)

.12

(.037)

.03

(.009)

2.06

(.628)

.44

(.134)

.16

(.049)

1.43

(.436)

.31

(.095)

.11

(.034)

3.04

(.927)

.65

(.198)

.23

(.070)

Unit

Capacity

(MBH)

040

040*

062

062*

077

077*

104

104*

125

Water
Temp

Drop

°F (°C)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

Output

MBH
(kW)

28.8
(8.4)

22.7
(6.7)

16.7
(4.9)

22.9
(6.7)

18.1
(5.3)

13.4
(3.9)

48.1

(14.1)

39.6

(11.6)

31.1
(9.1)

38.1

(11.2)

31.5
(9.2)

24.8
(7.3)

58.7

(17.2)

48.4

(14.2)

38.1

(11.2)

46.5

(13.6)

38.5

(11.3)

30.5
(8.9)

77.2

(22.6)

68.3

(20.0)

59.3

(17.4)

63.7

(18.7)

56.5

(16.6)

49.2

(14.4)

94.9

(27.8)

83.7

(24.5)

72.5

(21.2)

**Performance based on 200°F EWT, 20°F TD, 60°F EAT. Performance at 10°F & 30°F TD is also shown.

For capacities at other conditions, use the correction multipliers in the tables on page 12.

*Speed controller option is required for reduced ratings.

Final

Air

Temp °F

(°C)

104.6°
(40.3°)

95.2°

(35.1°)

85.9°

(29.9°)

108.3°
(42.4°)

98.3°

(36.8°)

88.4°

(31.3°)

104.8°
(40.4°)

96.9°

(36.1°)

89.0°

(31.7°)

109.7°
(43.2°)

101.1°
(38.4°)

92.4°

(33.6°)

105.1°
(40.6°)

97.2°

(36.2°)

89.3°

(31.8°)

110.0°
(43.3°)

101.2°
(38.4°)

92.7°

(33.7°)

106.6°
(41.4°)

101.2°
(38.4°)

95.8°

(35.4°)

108.6°
(42.6°)

103.1°
(39.5°)

97.6°

(36.4°)

108.9°
(42.7°)

103.1°
(39.5°)

97.3°

(36.3°)

Motor

HP

(kW)

1/40

(.019)

1/40

(.019)

1/20

(.037)

1/20

(.037)

1/20

(.037)

1/20

(.037)

1/8

(.093)

1/8

(.093)

1/6

(.124)

Motor

RPM

1550

1150

1550

1150

1550

1150

1070

850

1100

Nominal

CFM

3

(m

/s)

595

(.278)

436

(.203)

989

(.462)

706

(.329)

1200

(.560)

858

(.400)

1528

(.713)

1208

(.564)

1790

(.835)

Outlet

Velocity

FPM

(m/s)

877

(4.455)

658

(3.343)

1005

(5.105)

727

(3.693)

1220

(6.198)

894

(4.542)

980

(4.978)

783

(3.978)

1170

(5.944)

Sound
Rating

I

I

II

II

II

II

II

II

III

8

HOT WATER PERFORMANCE DATA**

Table 7 - Standard Output Units

Final

Air

Temp °F

(°C)

108.8°
(42.7°)

103.7°
(39.8°)

98.5°

(36.9°)

106.6°
(41.4°)

101.7°
(38.7°)

96.9°

(36.1°)

105.0°
(40.6°)

100.2°
(37.9°)

95.5°

(35.3°)

101.8°
(38.8°)

99.9°

(37.7°)

96.0°

(35.6°)

104.8°
(40.4°)

102.7°
(39.3°)

98.5°

(36.9°)

105.1°
(40.6°)

103.0°
(39.4°)

98.7°

(37.1°)

104.2°
(40.1°)

102.2°
(39.0°)

98.0°

(36.7°)

102.3°
(39.1°)

98.3°

(36.8°)

104.0°
(40.0°)

102.0°
(38.9°)

98.1°

(36.7°)

103.5°
(39.7°)

99.5°

(37.5°)

Motor

HP

(kW)

1/6

(.124)

1/6

(.124)

1/4

(.186)

1/4

(.186)

1/2

(.373)

3/4

(.559)

3/4

(.559)

1-1/2

(1.119)

1-1/2

(1.119)

3

(2.237)

Motor

RPM

1100

1100

1100

1100

1100

1140

1140

1160

1160

1165

Nominal

CFM

3

(m

/s)

2220

(1.036)

2620

(1.223)

3200

(1.493)

4162

(1.942)

4430

(2.067)

5210

(2.431)

6140

(2.865)

8020

(3.743)

9450

(4.410)

11,000
(5.133)

Outlet

Velocity

FPM

(m/s)

1045

(5.309)

1230

(6.248)

1495

(7.595)

1205

(6.121)

1275

(6.477)

1500

(7.620)

1770

(8.992)

1640

(8.331)

1930

(9.804)

2250

(11.430)

Unit

Capacity

(MBH)

144

164

200

237

285

317

367

495

585

700

Water
Temp

Drop

°F (°C)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

10°

(5.6°)

20°

(11.1°)

30°

(16.7°)

15°

(8.3°)

20°

(11.1°)

30°

(16.7°)

15°

(8.3°)

20°

(11.1°)

30°

(16.7°)

15°

(8.3°)

20°

(11.1°)

30°

(16.7°)

15°

(8.3°)

20°

(11.1°)

30°

(16.7°)

20°

(11.1°)

30°

(16.7°)

15°

(8.3°)

20°

(11.1°)

30°

(16.7°)

20°

(11.1°)

30°

(16.7°)

Output

MBH
(kW)

117.6
(34.5)

105.2
(30.8)

92.8

(27.2)

132.4
(38.8)

118.6
(34.7)

104.8
(30.7)

156.2
(45.8)

139.7
(40.9)

123.2
(36.1)

188.9
(55.3)

180.1
(52.8)

162.7
(47.7)

215.4
(63.1)

205.4
(60.2)

185.3
(54.3)

254.9
(74.7)

242.9
(71.2)

218.9
(64.1)

294.7
(86.3)

280.8
(82.3)

253.1
(74.2)

368.1

(107.9)

333.6
(97.7)

451.2

(132.2)

431.1

(126.3)

391.0

(114.6)

519.4

(152.2)

470.9

(138.0)

Flow
Rate
GPM

(L/s)

24.24

(1.529)

10.84

(.684)

6.38

(.402)

27.29

(1.722)

12.22

(.771)

7.20

(.454)

32.20

(2.031)

14.40

(.908)

8.47

(.534)

25.95

(1.637)

18.56

(1.171)

11.18

(.705)

29.60

(1.867)

21.17

(1.335)

12.73

(.803)

35.03

(2.210)

25.03

(1.579)

15.04

(.949)

40.49

(2.554)

28.94

(1.826)

17.39

(1.097)

37.93

(2.393)

22.92

(1.446)

62.00

(3.911)

44.43

(2.803)

26.86

(1.694)

53.52

(3.376)

32.35

(2.041)

Pressure

Drop

ft/water

(m/water)

4.32

(1.318)

.96

(.293)

.36

(.110)

3.67

(1.119)

.81

(.247)

.30

(.092)

5.02

(1.531)

1.11

(.339)

.41

(.125)

3.92

(1.196)

2.10

(.641)

.82

(.250)

5.02

(1.531)

2.68

(.817)

1.04

(.317)

6.88

(2.098)

3.67

(1.119)

1.42

(.433)

6.60

(2.013)

3.52

(1.074)

1.36

(.415)

5.81

(1.772)

2.29

(.698)

8.78

(2.678)

4.72

(1.440)

1.86

(.567)

5.29

(1.613)

2.08

(.634)

**Performance based on 200°F EWT, 20°F TD, 60°F EAT. Performance at 10°F & 30°F TD is also shown.

For capacities at other conditions, use the correction multipliers in the tables on page 12.

*Speed controller option is required for reduced ratings.

Sound
Rating

III

IV

III

IV

IV

IV

IV

IV

IV

IV

9