LND6029 LV-116 Water Temperature Control System

COMPLETE WATER
TEMPERATURE
CONTROL SYSTEM
LEONARD MEGATRON®
Complete Water Temperature
Control Systems regulate water
temperature for building hot water
systems and other commercial,
institutional and industrial
applications.
Thermostatic water mixing valves,
DURA-trol® solid bi-metal thermostatic control
Adjustable high temperature limit stops set
for 120°F
Mixed water capacity from 0.5 - 428 GPM
(1.9 - 1620 l/min)
Simple installation, reduced setup costs
All bronze, brass and stainless steel
construction
System mounted on strut with return piping
and circulator
Factory pre-assembled and tested as a
complete control station
Toll free technical support
Valve Assemblies are ASSE Standard 1017
and cUPC Listed
Complete Water Temperature Control System
All MEGATRON® Complete Water Temperature
Control Systems are supplied as factory assembled
and tested with all inlet, outlet and return piping
and include:
High Low Manifold System with large and small
Type TM Water Mixing Valves to meet high and low
demands for mixed water
Integral return piping including circulator, aquastat, check
valves, bypass piping, and balancing valve to eliminate
the possibility of piping installation error
Outlet test connection arrangement, ball valve shutoffs
on each mixing valve outlet and on hot and cold supplies
for ease of installation and set up
Dial thermometers on hot, cold, mixed and return piping
lines for complete system monitoring
NOTE: The MEGATRON® model must be selected
based upon the following:
Maximum demand for mixed water
System pressure drop
Designer’s estimated minimum water flow requirement
Do NOT specify a MEGATRON® system for an
installation where mixed water flow requirements are
greater or less than the limits shown below.
EXTENDED THERMOSTAT WARRANTY
Call the factory at 1.800.222.1208 for details on
Leonard’s exclusive Seven Year Limited Warranty for
Leonard High Low Systems.
Pressure gauge on tempered water piping
Station mounted on galvanized strut for simple
installation
Selection/Specification Guide
MEGATRON® MODEL (MODEL #) - (OPTION #) - (PIPING #)
MODEL
Standard MEGATRON® Systems – Piping Methods
TA
1/2” inlets and outlet,
0.5 – 6 GPM (1.9 – 23 l/min)
Method W
Method 2 (up to 8.0 GPM)
Models TA, 1N, 2N, 3N, 4N
270
1/2” inlets and outlet,
0.5 – 8.5 GPM (1.9 – 32 l/min)
Method 4 (8 – 25 GPM)
Model 5N
370
3/4” inlets and outlet,
0.5 – 9 GPM (1.9 – 34 l/min)
Method 5 (over 25.0 GPM)
Models 6N, 8N
1N
3/4” inlets, 1” outlet,
1.0 - 35 GPM (3.7 – 132 l/min)
2N
3/4” inlets, 1” outlet,
1.0 - 50 GPM (3.7 – 189 l/min)
3N
1” inlets, 1-1/4” outlet,
1.0 - 80 GPM (3.7 – 303 l/min)
4N
1-1/4” inlets and outlet,
1.0 - 90 GPM (3.7 – 340 l/min)
5N
1-1/4” inlets, 1-1/2” outlet,
1.0 - 125 GPM (3.7 – 473 l/min)
6N
2” inlets and outlet,
1.0 - 190 GPM (3.7– 719 l/min)
8N
3” inlets and outlet,
2.0 – 380 GPM (7.6 – 1438 l/min)
Models 270, 370
OPTIONS
BMSI Building Management System Interface
ARV Automatic Return Valve (Note: ARV option is
standard on Models 1N, 2N, 3N, 4N)
AL
Audio visual alarm
TT
Temperature Transmitter
TD
Temperature Data logger
FM
Floor Mounted
PIPING
2
M4
Method #4 piping for systems circulating
8 - 25 GPM (see p. 4)
M5
Method #5 piping for systems circulating over
25 GPM (see p. 4)
Megatron® 2N-AL
(AU-2000 AudioVisual Alarm)
1.0 – 50 GPM
(3.9 – 189 l/min)
3/4” inlets
1” outlet
Specification
SAMPLE SPECIFICATION
Thermometers on inlets, outlet and test connection
________“ inlets, ________“ outlet, ________ return piping
Circulator capable of ________ GPM @ ________ Ft.
Head as specified by engineer
________ GPM minimum flow capacity
(see chart on page 5)
Aquastat and switch box (wiring by others)
________ GPM maximum flow capacity @ ________ PSI
system pressure drop
Return piping balancing valve, drain valve
Large and small TYPE TM thermostatic
water mixing valves
Unit mounted on galvanized strut with
cushioned clamps
DURA-trol® solid bi-metal thermostats, color-coded
dials, adjustable limit stops set for 120°F (49°C), integral
check-stops
Rough bronze finish
Check valves on return and bypass lines
Factory pre-assembled and pre-tested
Tempered water line with thermometer and
pressure gauge
For installations where ease of installation and
setup costs are a factor, the complete pre-piped
station saves time and material.
MODEL TA
0.5 – 6 GPM (1.9 – 23 l/min)
1/2” inlets and outlet
1/2” return line
MODEL 270
0.5 – 8.5 GPM (1.9 – 32 l/min)
1/2” inlets and outlet
1/2” return line
MODEL 370
0.5 – 9 GPM (1.9 – 34 l/min)
3/4” inlets and outlet
3/4” return line
MODEL 1N
1.0 - 35 GPM (3.7 - 132 l/min)
3/4” inlets, 1” outlet
3/4” return line
MODEL 2N
1.0 - 50 GPM (3.7 - 189 l/min)
3/4” inlets, 1” outlet
3/4” return line
MODEL 3N
1.0 - 80 GPM (3.7 - 303 l/min)
1” inlets, 1-1/4” outlet
3/4” return line
MODEL 4N
1.0 - 90 GPM (3.7 - 340 l/min)
1-1/4” inlets and outlet
3/4” return line
MODEL 5N
1.0 - 125 GPM (3.7 -473 l/min)
1-1/4” inlets, 1-1/2” outlet
1” return line
MODEL 6N
1.0 - 190 GPM (3.7 - 719 l/min)
2” inlets and outlet
1-1/4" return line
MODEL 8N
2.0 – 380 GPM (7.6 – 1438 l/min)
3” inlets and outlet
1-1/2” return line
It also helps eliminate problems associated with
incorrect return line piping. All necessary fittings for
adjustment are located on this system.
Megatron® 8N
2.0 – 380 GPM
(7.6 – 1438 l/min)
3” inlets/outlet
1-1/2” return line
3
Legend
1. Full port ball valve
MIXED OUTLET
10
2. Large TM mixing valve
9
7
4
3/4" RETURN
LINE FROM
MIXED OUTLET
ONLY
80
100
60
1
6
4
120
40
8
10
2
11
140
20
kg/cm 2
psi
LEONARD
160
20
40
5. Automatic Return Valve
100
30
LEONARD
R
40
6
50
20
120
-10
°C
0
4. Test connection
80
60
10
0
1
3. Small TM mixing valve
60
°F
140
6. Dial thermometer
8
12
1
7. Pressure Gauge
2
8. Circulator - as specified by engineer
R
LEONARD
THERMOSTATIC
80
60
TYPE TM
20
40
U.S.A
.
R
LEONARD
D
R.I.
NAR
CO.
AN
40
50
-10
20
120
LEO
10
0
N
STO
VE
6
100
30
ts 2.970,770 & 3,061,195 3.152,760
ASSE
1017
VAL
°C
60
13
140
11
15
LEONARD
40
R
40
0
0
50
60
50
-10
120
20
°C
0
20
-10
120
40
40
100
30
10
R
C
20
30
LEONARD
100
20
10
3/4" RETURN
TO HOT WATER
SOURCE
80
60
H
80
60
10. Circulator power switch
11
ASSE
1017
3
°C
°F
0
140
60
°F
140
6
5
HOT INLET
11. Flapper check
12. Galvanized strut
13. Tee bracket
1
1
1
9. Aquastat
°F
0
14. Corner bracket
14
COLD INLET
15. Tee drain
Required Piping Method
DOMESTIC WATER
0
80
100
60
6
4
40
8
120
10
2
2
11
140
20
kg/cm
psi
LEONARD
160
C
12
0
60
0
80
60
30
100
40
20
10
R
LEONARD
LEON AR D VAL VECO.
C RAN STON RI USA
40
0
50
20
°C
0
120
-10
60
T YPT M
°F
140
120
HIGH
TEMPERATURE
WATER
0
R
LEONARD
0
THERMOSTATIC
PE TM
US. Patent
80
60
770 & 3,061,195 3.152,760
NARD
U.S.A.
LEO
20
R.I.
1017
40
STON
VE
30
100
VAL
10
R
LEONARD
CO.
40
CRAN
0
50
20
°C
0
120
-10
60
°F
140
ASSE
1017
80
20
100
30
10
R
LEONARD
80
60
30
100
R
LEONARD
40
40
0
50
50
-10
°C
°F
0
140
120
120
60
20
20
°C
0
60
C
-10
°F
H
40
20
10
40
60
0
3/4"
ARV
140
HOT
WATER HEAT
SOURCE TRAP
Required Piping Method #4
For systems recirculating from
8 to 25 GPM
Required Piping Method #5
For systems recirculating
over 25 GPM
FIXTURES SUPPLIED BY TEMPERED WATER
HIGH
TEMPERATURE
WATER RETURN
COLD SUPPLY
BALL VALVE
THERMOMETER T
Required Piping Method #2
For systems recirculating up to 8 GPM
C
A
CIRCULATOR
AQUASTAT
HOT WATER
SOURCE
BALL VALVE
CHECK VALVE
BALL VALVE
COLD
SUPPLY
CHECK VALVE
BALANCE VALVE
CHECK VALVE
Required Piping Method W
For models 270, 370
4
Flow Capacities
IN
MODEL
1/2"
OUT
5
10
15
L\MIN
.3
.7
1.0
1.4
1.7
0.5
2.0
2.9
4.1
5.3
1.9
7.6
11
16
0.5
3.5
5.5
1.9
13
0.5
1/2"
MODEL TA*
(12.7mm) (12.7mm)
1/2"
PRESSURE DROP
20
25
30
MINIMUM
FLOW
(GPM)
1/2"
35
40
45
50
PSI
2.1
2.4
2.8
3.1
3.4
BAR
6.1
6.9
7.6
8.3
8.9
9.0
GPM
20
23
26
29
31
33
34
L\MIN
6.5
7.5
8.5
9.5
10.0
10.5
11
12
GPM
21
25
28
32
36
38
40
42
45
L\MIN
4.0
6.0
7.0
8.0
9.0
10
10.5
11.5
12.5
13
GPM
1.9
15
23
27
30
34
38
40
43
47
49
L\MIN
1.0
12
18
22
26
30
33
36
39
42
44
GPM
3.7
45
68
83
98
114
125
136
148
159
167
L\MIN
GPM
MODEL 270**
(12.7mm) (12.7mm)
3/4"
MODEL 370**
3/4"
(19.1mm) (19.1mm)
3/4"
MODEL 1N*
1"
(19.1mm) (25.4mm)
3/4"
1"
1.0
19
29
38
45
51
56
62
68
72
75
3.7
72
110
144
170
193
212
235
257
272
284
L\MIN
1.0
26
40
48
58
63
68
74
79
84
89
GPM
3.7
98
151
182
220
238
257
280
299
318
337
L\MIN
1.0
33
47
56
63
68
82
85
92
103
115
GPM
L\MIN
MODEL 2N*
(19.1mm) (25.4mm)
1"
1 1/4"
MODEL 3N*
(25.4mm) (31.6mm)
1 1/4"
MODEL 4N*
1 1/4"
(31.6mm) (31.6mm)
1 1/4"
1 1/2"
3.7
125
178
212
238
257
310
322
348
390
435
1.0
48
65
80
95
112
120
130
140
158
165
GPM
3.7
182
246
303
360
424
454
492
530
598
625
L\MIN
1.0
78
113
129
145
172
188
197
214
226
GPM
3.7
295
428
488
549
617
651
712
746
810
856
L\MIN
2.0
156
226
258
290
326
344
376
394
428
452
GPM
7.6
591
856
977 1098 1234 1302 1423
1491
1620
1711
L\MIN
MODEL 5N*
(31.6mm) (38.1mm)
2"
2"
163
MODEL 6N*
(50.8mm) (50.8mm)
3"
MODEL 8N*
3"
(76.2mm) (76.2mm)
* VALVE ASSEMBLY(S) ARE ASSE STANDARD 1017 LISTED
** VALVE ASSEMBLY IS ASSE STANDARDS 1017 & 1070 LISTED
MAXIMUM FLOW CAPACITY
Note: The High Low model must be selected based
upon the following:
Maximum system demand for mixed water
System pressure drop†
Designer’s estimated minimum mixed waterflow requirement
System Pressure Drop = the pressure available at the inlet of the
mixing valve unit minus the pressure required to operate the farthest
fixtures, i.e., shower valves, in the building.
PRESSURE DROP, P.S.I.G. SYSTEM
†
MODEL 270
MODEL 370
MODEL TA
MODEL 1N
Minimum Flow
Model TA:
Model 270:
Model 370:
Model 1N:
Model 2N:
Model 3N:
Model 4N:
Model 5N:
Model 6N:
Model 8N:
0.5
0.5
0.5
1.0
1.0
1.0
1.0
1.0
1.0
2.0
GPM
GPM
GPM
GPM
GPM
GPM
GPM
GPM
GPM
GPM
MODEL 3N MODEL 5N
MODEL 2N
MODEL 4N MODEL 6N
MODEL 8N
BAR
50
3.4
40
2.8
30
2.1
20
1.4
10
0.7
2
3
4
5
6 7 8
10
20
30
40 50 60 70 80 100
150 200
300 400 500
FLOW RATE, GPM
Caution: All thermostatic water mixing valves have limitations. They will not provide the desired accuracy outside of
their flow capacity range. Consult the above chart and graph and make certain flow is greater than as shown above.
Note: Flow rates will vary depending on existing field conditions. Leonard Valve Company always recommends
using CASPAK® sizing software for proper valve sizing and model number applications.
5
Options
BMSI
MEGATRON® with Building
Management System Interface
option. The BMSI is mounted in a
cabinet, including an enclosure,
temperature indication, a Type J
thermocouple, a 9’ power cord
(plug in 120V), and an Ethernet
category 5 connection for BMS
communication.
LEONARD
72° F
Audio-Visual High-Temperature Alarm
POWER
WARNING
LIGHT
RESET
SWITCH
ALARM
SWITCH
F
C
F
AL
MEGATRON® with audio visual
high temperature alarm.
AQUASTAT
LEONARD
C
ARV
MEGATRON® with Automatic
Return Valve. The ARV will
maintain a constant temperature
once it has been set.
(Note: ARV option is standard on
Models 1N, 2N, 3N, 4N)
P SI
C
TT
Temperature Transmitter,
4-20mA output, stainless steel
probe, 24VDC power supply,
capable of operating with long
cable runs, 0 to 212°F
temperature range.
F
TD
Temperature DataLogger,
sampling rate adjustable from
0.5 seconds to 9 hours, 7943
measurements storage capacity,
stainless steel probe, -4 to
158°F temperature range.
PROBE
WITHIN
OUTLET
PIPING
FM
MEGATRON® with 2 legs,
3-1/2’ and 45° braces front
and back for mounting to
floor in center of room.
Note: All specifications are subject to change without notice!
1360 Elmwood Avenue
Cranston, RI 02910 USA
800.222.1208
t 401.461.1200
f 401.941.5310
info@leonardvalve.com
www.leonardvalve.com
LV-116 08/10
© 2010 Leonard Valve Company
Printed in the U.S.A.
6
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