resideo Aquastat L7224U Manual Del Usuario

L7224U Oil and Electric Boiler
Electronic Aquastat
APPLICATION
The EnviraCOM™ enabled L7224U Electronic Aquastat
Controller provides electronic temperature sensing in a
UL limit-rated controller with a single sensing probe.
The L7224U controls the circulator, oil or electric burner
or contactor, and boiler temperature.
The L7224U is "Outdoor Temperature Reset" ready,
which is enabled when connected to the W8735Y1000
wireless or W8735S1000 wired Outdoor Reset Kits. This
option is intended for all applications except for tankless
coil systems for domestic hot water.
The L7224U replaces the L8124A, L8124C, L7124U,
L7148A, L7248A,C, L7224A,C, and L8148A controllers
and is intended for residential applications.
The L7224U also complies with 2012 DOE regulations to
ensure efficiency is maximized without interfering with
domestic hot water demands.
IMPORTANT:
Use of Outdoor Temperature Reset on a tank-
less coil application requiring a Low Limit set-
ting may result in limited system effectiveness
and reduced efficiency.
The L7224U provides status and diagnostic
information through an LED display combined
with LED lights as well as EnviraCOM commu-
nications enabled thermostats and diagnostic
tools to enhance the diagnostic process.
SPECIFICATIONS
Electrical Ratings:
Voltage: 120 Vac, 60 Hz.
Power: 7 VA maximum at 120 Vac plus external loads.
Thermostat current: 100 mA nominal at 24 Vac.
Burner Relay:
7.4 A at 120 Vac Full Load Amperage (FLA);
44.4 A inrush Locked Rotor Amperage (LRA);
Less Ignition Load: 360 VA.
Circulator Relay:
7.4 A at 120 Vac FLA; 44.4 A inrush LRA.
Zone Controller (ZC): 7.4 A at 120 Vac FLA;
44.4 A inrush LRA.
®
Controller
INSTALLATION INSTRUCTIONS
NOTE: All loads combined cannot exceed 2000 VA.
Environmental Ratings:
®
Temperature: -30 °F to +150 °F (-34 °C to +66 °C).
Humidity: 0 to 95% relative humidity, noncondensing.
Approvals:
Underwriters Laboratories Inc. Component Recognized.
Canadian Underwriters Laboratories Inc. Component
Recognized.
Accessories (Ordered Separately):
W8735Y1000 Wireless Outdoor Reset Kit
W8735ER1000 Wireless Outdoor Reset Module
C7089R1013 Wireless Outdoor Temperature Sensor
(requires W8735ER1000)
W8735S1000 AquaReset™ Outdoor Reset Kit (includes
50022037-002 Outdoor Reset Module and
C7089U1006 Outdoor Temperature Sensor)
W8735S1008 AquaReset™ Domestic Hot Water Kit
(includes 50022037-005 Domestic Hot Water Module
and 32003971-003 Sensor)
C7089U1006 Outdoor Temperature Sensor (used with
the 50022037-002)
32003971-003 Temperature Sensor (used with
50022037-005)
Sensor (See Table 2).
Sensor Well Clamp 121371AA.
120650 Heat Conductive Compound.
Table 1. Wells for L7224U Controller.
Part Spud Size
Number
123869A 1/2 (12.7) NPT
123870A 3/4 (19.05) NPT
Table 2. Sensors for L7224U Controller.
Part Number
50001464-001
50001464-003
50001464-004
50001464-005
Insertion
in. (mm) in. (mm)
3 (76.2)
3 (76.2)
Length in.
(mm)
12 (304.8) Well-mounted
controls
24 (609.6) Flush-mounted
controls
36 (914.4)
48 (1219.2)
69-1720EFS-13
Insulation in.
(mm)
1-1/2 (38.1)
1-1/2 (38.1)
Application