RATINGS AND SPECIFICATIONS

 

 

SINGLE

 

 

SINGLE PHASE –– THREE WIRE

THREE PHASE –– FOUR WIRE 208 VAC WYE §

 

SINGLE

PHASE

Neutral Lug

 

Grounding

 

 

D.O.E

 

Grounding

 

 

D.O.E

Size (AWG)

 

Lug Size

 

 

 

Lug Size

 

Boiler

PHASE

Capacity

Solid

 

Main Lug

(AWG)

† ** Heater

 

Capacity

Main Lug

(AWG)

† Heater

* KW at

*(Btu/hr) at

Stranded

Size (AWG)

Amps at

KW at

(Btuh) at

Size (AWG)

Amps at

 

 

 

 

Model No.

240 VAC

240 VAC

Cu ¶ AL

Cu ¶ AL

CU ¶ AL

Cu

¶ AL

240 VAC

208 VAC

208 VAC

CU ¶ AL

Cu

¶ AL

208 VAC

EH8S

8

27000

14-12

12

6-2/0

14-4

6-4

33

–––

–––

–––

–––

–––

–––

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH10S

10

34000

14-12

12

6-2/0

14-4

6-4

42

–––

–––

–––

–––

–––

–––

EH12S

12

41000

14-12

12

6-2/0

14-4

6-4

50

9.012

31000

6-2/0

14-4

6-4

25.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH16S

16

55000

14-12

12

6-2/0

14-4

6-4

67

12.016

41000

6-2/0

14-4

6-4

‡38.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH20S

20

68000

14-12

12

6-2/0

14-4

6-4

83

15.020

51000

6-2/0

14-4

6-4

‡48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH24S

24

82000

14-12

12

6/2/0

14-4

6-4

100

18.024

62000

6-2/0

14-4

6-4

‡60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH28S

28

96000

14-12

12

2-250 MCM

14-4

6-4

117

21.028

72000

6-2/0

14-4

6-4

‡60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH32S

32

109000

14-12

12

2-250 MCM

14-4

6-4

133

24.032

82000

6-2/0

14-4

6-4

‡73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EH40S

40

137000

14-12

12

2-250 MCM

6-2/0

–––

167

30.040

103000

6-2/0

14-4

6-4

‡95.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Multiply by 0.751 for values at 208 volts AC.

**Multiply by 0.867 for values at 208 volts AC.

† For total current add, to the value shown in the table, the current draw for circulator and/or zone valve transformer (12 Amp. max.),

‡ Leg with the highest value of line current of an unbalanced 3 phase load.

¶ Aluminum conductors may be used, lug size, conduit size, ampacity and all applicable codes permitting. However, aluminum conductors may not be used for model EH-40 single phase.

§3 phase 240V special model also available. Consult factory for information.

Specify Model as follows: Model Number. Single or three Phase.

“135S” for single phase, 120V/240V, 120V/208V WYE. 3 wire (see note (1) below) with control circuit breaker.

“345S” for three phase, 120V/208V WYE. 4 wire (see note (1) below) with control circuit breaker.

Note No. 1: Voltage of any line to ground cannot exceed 125 VAC.

Example: EH-20-135S=20KW boiler for 120V/240V. 120V/208V Single Phase 3 wire.

ELECTRICAL

Single branch circuit for 3 wire 120/208 V WYE, 120/240 Volt a.c. single phase, 60 Hz or for 4 wire 120/208V WYE three

phase, 60Hz a.c. See note (1) above.

Circulator relay 12 AMP Max, 120V a.c.

Heating elements: Low-density replaceable. Copper sheathed and silver brazed base.

Relays: Heavy-duty contactors, 48 AMP U.L. rating

TYPICAL PIPING DIAGRAM

FOR USE WITH TWO-WAY ZONE VALVES

NOTES:

1.Optional blocking gate valve and hose end valve used (with drain valve) for fast fill and purge of system.

IMPORTANT Close bypass line valve (if used) during purging.

2.Circulator should not be installed at lowest point of piping.

3.There should be no elbows, tees, or change of pipe size for at least 5 diameters of pipe size (see table below) upstream and downstream of flow switch.

 

Flow Switch

 

Minimum Length of

 

Pipe

Straight Pipe Upstream

 

McDonnell

and Down-Stream

Boiler Model

& Miller No.

Size

of Flow Switch

EH-40

FS8W

1 14 IN.

8 12

IN.

EH-8 Thru EH-32

FS4-3T3-1

1 IN.

6 12

IN.

 

 

 

 

 

© Slant/Fin Corp. 2003. Printed in U.S.A. 1203. Publication EH-10

SLANT/FIN CORPORATION., Greenvale, N.Y. 11548 • www.slantfin.com

Phone: (516) 484-2600 • Fax: (516) 484-5921

In Canada: Slant/Fin LTD/LTEE, Mississauga, Ontario • www.slantfin.ca

Page 4
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Slant/Fin Monitron EH Boilers manual Ratings and Specifications, Typical Piping Diagram

Monitron EH Boilers specifications

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