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Capacity, Recirculation system 1 – Watts LFN170 CSUT User Manual

Page 3

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3

Flow Capacity at 50-50 mixed with Checkstops

P r e s s u r e D r o p A c r o s s V a l v e

Model

Inlet / Outlet (NPT)

Min. Flow

C

V

5psi

10psi

20psi

30psi

45psi

60psi

to ASSE 1017

(34 kPa)

(69 kPa)

(138 kPa)

(207 kPa)

(310 kPa) (414 kPa)

3

/

4"

N170-M3 CSUT

3

/

4"

LFN170-M3 CSUT

3

/

4

x

3

/

4

"

3 gpm

6.26

14 gpm

20 gpm

28 gpm

34 gpm

42 gpm

48 gpm

11 lpm

53 lpm

76 lpm

106 lpm

129 lpm

159 lpm

182 lpm

1" N170-M3 CSUT

1" LFN170-M3 CSUT

3

/

4

x 1"

4 gpm

9.54

21 gpm

30 gpm

43 gpm

52 gpm

64 gpm

74 gpm

15 lpm

79 lpm

114 lpm

163 lpm

197 lpm

242 lpm

280 lpm

1

1

/

4"

N170-M3 CSUT

1

1

/

4"

LF170-M3 CSUT

1-

1

/

4

x 1-

1

/

4

"

4 gpm

13.42

30 gpm

42 gpm

60 gpm

74 gpm

90 gpm

104 gpm

15 lpm

114 lpm

159 lpm

227 lpm

280 lpm

341 lpm

394 lpm

1

1

/

2"

N170-M3 CSUT

1

1

/

2"

LFN170-M3 CSUT

1-

1

/

4

x 1-

1

/

2

"

5 gpm

14.90

33 gpm

47 gpm

67 gpm

82 gpm

100 gpm

115 gpm

19 lpm

125 lpm

128 lpm

254 lpm

310 lpm

379 lpm

435 lpm

2" N170-M3 CSUT

2" LFN170-M3 CSUT

1-

1

/

4

x 2"

7 gpm

17.89

40 gpm

57 gpm

80 gpm

98 gpm

120 gpm

139 gpm

26 lpm

151 lpm

216 lpm

303 lpm

371 lpm

454 lpm

526 lpm

Flow Capacity at 50-50 mixed Less Checkstops

P r e s s u r e D r o p A c r o s s V a l v e

Model

Inlet / Outlet (NPT)

Min. Flow

C

V

5psi

10psi

20psi

30psi

45psi

60psi

to ASSE 1017

(34 kPa)

(69 kPa)

(138 kPa)

(207 kPa)

(310 kPa) (414 kPa)

3

/

4"

N170-M3

3

/

4"

LFN170-M3

3

/

4

x

3

/

4

"

3 gpm

6.70

15 gpm

21 gpm

30 gpm

37 gpm

45 gpm

52 gpm

11 lpm

57 lpm

79 lpm

114 lpm

140 lpm

170 lpm

197 lpm

1" N170-M3

1" LFN170-M3

1 x 1"

4 gpm

10.13

23 gpm

32 gpm

45 gpm

56 gpm

68 gpm

79 gpm

15 lpm

87 lpm

121 lpm

170 lpm

212 lpm

257 lpm

299 lpm

1

1

/

4"

N170-M3

1

1

/

4"

LFN170-M3

1-

1

/

4

x 1-

1

/

4

"

4 gpm

14.16

32 gpm

45 gpm

63 gpm

76 gpm

95 gpm

110 gpm

15 lpm

121 lpm

170 lpm

238 lpm

288 lpm

360 lpm

416 lpm

1

1

/

2"

N170-M3

1

1

/

2"

LFN170-M3

1-

1

/

2

x 1-

1

/

2

"

5 gpm

15.65

35 gpm

49 gpm

70 gpm

86 gpm

105 gpm

121 gpm

19 lpm

134 lpm

185 lpm

265 lpm

326 lpm

397 lpm

458 lpm

2" N170-M3

2" LFN170-M3

2 x 1-

1

/

2

x 2"

7 gpm

18.63

42 gpm

59 gpm

83 gpm

102 gpm

125 gpm

144 gpm

26 lpm

159 lpm

223 lpm

314 lpm

386 lpm

473 lpm

545 lpm

Capacity

Recirculation Loop

Water

Heater

or

Boiler

WATTS

Check

Valves

WATTS CSA/ASME

Temperature &

Pressure Relief Valve

To MMV, USG-B, L111 or

LFL111 then to fixtures

WATTS

Check

Valves

Circulator

WATTS

Ball

Valve

WATTS

Series N170-M3†

or LFN170-M3

Series

MMV

Hot Water Supply

Tempered Water Supply

Cold Water

Supply

To Fixture

Recirculation System 1

Thermometer

DrainTube

Aquastat

Cold Water Supply

Series N170-M3 and LFN170-M3

Hot Water Master Tempering Valves

Installation Instructions for

A Two Temperature Recirculating Hot Water Supply System

This manual is related to the following products: