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Accustat Multi
Stage Low Voltage Controls
Description:
ACCUSTAT® Multi-stage control uses preset or adjustable ACCUTHERM® snap-in
sensors. ACCUSTAT® controls have been proven to save energy, up to 15%
over the conventional bi-metal thermostats.
ACCUSTAT® LMS Series Energy controls are solid-state controls for multistage
systems using preset or adjustable snap-in sensors. Advantages include
high accuracy, no drift, and independently adjustable individual stage setpoints.
No bimetal elements are used. Built-in locking covers, opened with a
special key provide tamper resistance. No leveling or anticipator
adjustments are necessary. Wiring and terminal identification complies
with industry standards. Differential is between 1.5° to 3°F, depending on
system.
Application:
Ideal for commercial
and industrial installations where accurate, tamper-proof control is required.
Examples are Fast Food stores, Restaurants, Churches, Schools, Retail stores,
etc.
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Features: |
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Locking Case -- Requires
special key to open (provided with each control) |
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Easy to install -- Same
wiring as the bimetal thermostat |
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Tamper Resistant --
Temperature settings cannot be adjusted when preset sensor is used.
Selected models have switches under the cover (model LMS-AH22NS), |
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Precise Temperature Control
-- No leveling and no anticipators to adjust. |
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Specifications: |
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Voltage |
18-26 VAC |
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Sensing |
Preset or adjustable sensors |
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Rating |
1.2 amps per stage |
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Stages |
Multi-Stage |
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Differential |
Approx. 2°F depending on air
flow |
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Case |
Plastic, white |
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Locking Case |
Special key required |
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Wire Connections |
Screw Terminal |
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Dimensions |
4.6Wx4.6Hx1.5D |
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Model Information: |
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Model |
Function/ Stages |
Sensors Required |
System Switches |
Fan Switch |
Connections |
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LMS-A2 |
2 CL |
2 |
On/Off |
Auto/On |
R,Y1,Y2,G |
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LMS-H2 |
2 HT |
2 |
On/Off |
Auto/On |
R,W1,W2 |
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LMS-AH12 |
1 CL/2 HT |
3 |
HT/Off/Auto/CL |
Auto/On |
RH,RC,W1,W2,Y,G |
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LMS-AH21 |
2 CL/1 HT |
3 |
HT/Off/Auto/CL |
Auto/On |
RH,RC,W,Y1,Y2,G |
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LMS-AH22 |
2 CL/2 HT |
4 |
HT/Off/Auto/CL |
Auto/On |
RH,RC,W1,W2,Y1,Y2,G |
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LMS-AH22NS |
2 CL/2 HT |
4 |
HT/Auto/CL/On/Off |
Auto/On |
RH,RC,W1,W2,Y1,Y2,G |
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LMS-AH22-IF |
2 CL/2 HT |
4 |
Isolated Fan Circuit |
Auto/On |
RH,RC,W1,W2,Y1,Y2,G |
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Engineering Specifications: |
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Thermostat
shall be low voltage multistage heating and/or cooling type, with snap-in
preset or adjustable sensors. The electrical rating shall be 1.2 amp
max. @24-30VAC (Heat pump model: 1.5 amp max @24-30VAC). Sensors shall
be hermetically sealed and activated by mercury column contacting internal
platinum electrodes. Case shall be molded plastic, with an integral
locking cover. |
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Warranty: |
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PSG Controls carry a "limited 1
year warranty" against defects in workmanship and materials (contact PSG for
full warranty policy). |
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