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L408A,B; L608A
VaporStat® Controllers
PRODUCT DATA
FEATURES
APPLICATION
The L408A,B and L608A VaporStat® Controllers are line voltage pressure controllers that provide operating control or automatic limit protection for pressure systems of up to 4 psi (0.28 kg/cm2 or 27.6 kPa).
•Primarily for use in vapor heating systems, but also may be used with liquids, air, and other noncombustible gases
•Stainless steel diaphragm also allows use with ammonia, oxygen, distilled water, and similar media.
•L408A and B models have an spst switch; L408A breaks and L408B makes when pressure rises to the main scale setpoint.
•L608A models have an spdt switch that breaks R-B when pressure rises to the main scale setpoint.
•Dustproof, trouble-free mercury switch.
•Maximum surge pressure of 15 psi (103.4 kPa).
•All models have an adjustable subtractive differential.
•Adjustments are made by screws on top of case.
•Scaleplates are marked in English (psi) and metric (kg/cm2) units.
•Case has clear plastic cover so that pressure settings and switch action can be observed.
•Leveling indicator visible through cover.
•Hexagonal fitting with 1/4-18 NPT internal threads for direct mounting to the 14026 Steam Trap (siphon loop), which is included.
•Can also be surface mounted by screws through holes (knockouts) in back of case.
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Contents |
Application ........................................................................ |
1 |
Features ........................................................................... |
1 |
Specifications ................................................................... |
2 |
Ordering Information ........................................................ |
2 |
Installation ........................................................................ |
3 |
Wiring ............................................................................... |
5 |
Setting and Checkout ....................................................... |
6 |
Service Information .......................................................... |
7 |
® U.S. Registered Trademark |
|
Copyright © 2003 Honeywell International Inc. |
60-2158-5 |
All Rights Reserved |
L408A,B; L608A VAPORSTAT® CONTROLLERS
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not match the listed specifications exactly. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.
Models:
L408A,B and L608A VaporStat® Controllers. See Tables 1, 2, and 3 below. All models include a 14026 Steam Trap (siphon loop), which is necessary for boiler installations.
Table 1. Models Available.
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Switch Action on |
Model |
Switch Type |
Pressure Rise |
L408A |
Spst |
Breaks |
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L408B |
Spst |
Makes |
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L608A |
Spdt |
Breaks R-B; makes |
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R-W. |
Table 2. Switch Contact Ratings (in amperes at 50/60 Hz).
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120 |
240 |
120 |
240 |
Model |
Load |
Vac |
Vac |
Vdc |
Vdc |
L408A,B |
Full Load |
8.0 |
5.1 |
2.4 |
1.2 |
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Locked Rotor |
48.0 |
30.6 |
24.0 |
12.0 |
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Noninductive |
10.0 |
5.0 |
5.0 |
2.0 |
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L608A |
Full Load |
8.0 |
5.1 |
2.0 |
1.0 |
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Locked Rotor |
48.0 |
30.6 |
20.0 |
10.0 |
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Noninductive |
10.0 |
5.0 |
8.0 |
4.0 |
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Table 3. Operating Ranges Available for All Models.
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Pressure Ranges |
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Midscale Subtractive Differential (Adjustable) |
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English Units |
kg/cm2 |
kPa |
oz/in.2 |
kg/cm2 |
kPa |
0 to 16 oz/in.2 |
0 to.0.07 |
0 to 6.9 |
2 to 16 |
0.01 to 0.07 |
0.9 to 6.9 |
0 to 4 psi |
0 to 0.28 |
0 to 27.6 |
4 to 16 |
0.02 to 0.07 |
1.7 to 6.9 |
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0 to 16 oz/in.2 |
0 to 0.7 |
0 to 6.9 |
3.5 to 16 |
0.02 to 0.07 |
1.6 to 6.9 |
Maximum Surge Pressure:
15 psi (1.05 kg/cm2 or 103.4 kPa).
Switch:
Mercury switch in all models.
Pressure Sensing Element:
Stainless steel diaphragm.
Maximum Ambient Temperature:
150°F (66°C).
Minimum Ambient Temperature:
-35°F (-37°C); also refer to note under Location and Mounting in the Installation section.
Adjustment Means:
Screws on top of controller case. Scales are marked in psi and kg/cm2.
Electrical Connections:
Internal screw terminals; holes in side of case for 1/2 inch conduit.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:
1.Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2.Honeywell Customer Care 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
60-2158—5 |
2 |
L408A,B; L608A VAPORSTAT® CONTROLLERS
Mounting Means:
Hexagonal fitting on diaphragm has 1/4-18 NPT internal threads for mounting on a pipe or steam trap (siphon loop). Also can be surface mounted by screws through two holes (knockouts) in back of case.
Dimensions:
See Fig. 1; also Fig. 2 for mounting steam trap (siphon loop).
Weight:
2 lb, 4 oz. (1.02 kg).
Finish:
Gray.
Approvals:
Underwriters Laboratories Inc. Listed: File No. MP466, Vol.
10; Guide No. MBPR.
Canadian Standards Association Certified: File No. LR1620;
Guide No. 400-E-0.
Replacement Parts:
129178 Thermoplastic Cover.
14026 Steam Trap (siphon loop)—1/4 inch black iron pipe; included with all models.
Accessories:
33312B Knurled Adjustment Knob—with setscrew; fits on main scale pressure adjusting screw.
4074BWJ Limit Stop Assembly—to limit setpoint ranges: includes 129564 Range Stop, 107194 Range Stop Screw, and 23466 Wrench.
MERCURY NOTICE
If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Dispose of properly. This control also contains mercury in a sealed tube. It must also be disposed of properly when it is replaced.
Contact your local waste management authority for instructions regarding recycling and the proper disposal of an old control.
4-1/2 (114) |
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COVER |
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4-11/32 (110) |
3/16 (9) x 21/64 (8) KNOCKOUT (2) |
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CASE |
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1-15/16 |
1-61/64 |
2-3/4 (70) |
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(49) |
(50) |
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1-5/32 |
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1-1/16 (27) |
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(29) |
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3-7/8 |
3-23/32 |
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(98) |
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(95) |
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13/16 |
5-1/8 |
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1-13/16 |
(21) |
(130) |
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(46) |
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7/8 |
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(22) DIA. |
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1-1/16 |
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2-1/8 (54) |
1/4 – 18 NPT |
(27) |
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1-3/16 (30) |
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2-1/4 (57) |
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2-1/4 (57) |
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4-1/2 (114) |
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M19770 |
Fig. 1. Mounting dimensions of the L408A,B and L608A VaporStat® controllers in inches (millimeters in parentheses).
INSTALLATION
When Installing This Product…
1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2.Check the ratings given in the instructions and on the
product to make sure the product is suitable for your application.
3.Installer must be a trained, experienced service technician.
4.After installation is complete, check out product operation as provided in these instructions.
3 |
60-2158—5 |
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