L8148A,E,J AQUASTAT® RELAYS
3
60-2278—9
Table 2. Standard L8148 Model Specifications.
a
See Fig. 1 for case dimensions.
b
Number of V8043 Zone Valves that can be powered from the L8148 without additional transformer(s). 1.2A load is the
maximum permissible when ambient temperature exceeds 77°F (25°C).
c
Number of R8230C Relays that can be powered from the L8148. Additional relays in groups of four or fewer require an
additional transformer.
d
Models available with plug for connecting L8148E directly to the D892/M892 Vent Dampers.
e
Models available with plug (L8148E) and 50 VA transformer are for use with the Honeywell SV9500/SV9600 SmartValve®
System Control. No zone valves or relays can be powered from the L8148 when used with SV9500/SV9600 gas valves.
Maximum Ambient Temperature:
150°F (66°C) with 1.2A 24V load;
77°F (25°C) with 1.4A 24V load.
Thermostat Heat Anticipator Setting:
0.2A.
Standard Scale Range:
180°F to 240°F (82°C to 116°C).
Differential:
Nonadjustable.
Finish:
Gray enamel.
Optional Specifications:
Scale Range: 140°F to 240°F (60°C to 116°C).
High Limit Dial Stop.
Case Dimensions:
See Fig. 1.
Accessories:
107408 Heat Conductive Compound (4 oz. can). For
more information, see form 69-0955, Heat Conductive
Compound.
124904 Well Adapter. For ordering information, see form
68-0040, Immersion Wells and Compression Fittings.
Fig. 1. L8148 dimensions in in. (mm).
Model
Number
Burner
Circuit
Voltage
Mounting
Case
a
Special
Provision for
Adding Remote
Low Limit
High
Limit
Second
Limit
Circulator
Control
Maximum Number
of Zone Controls
Thermostat
Required
Manual/
Auto
Switch
Valves
b
Relays
c
L8148A
Line
Horizontal Yes
Yes
No
Can be
added
remotely
—
—
24V
No
L8148E
d,e
Low
Vertical
2
4
L8148J
Low or
millivolt
Vertical or
horizontal
Yes
3-1/8
(79)
1/8 (3)
6-1/8
(156)
3-3/8
(86)
2-1/8 (54)
(VERTICAL
MOUNT)
1-1/4 (32) (HORIZONTAL
MOUNT—BOTTOM)
KNOCKOUTS FOR
1/2 (13) CONDUIT
4-5/16 (110)
1-1/4 (32)
(VERTICAL
MOUNT)
3-1/16 (78)
(HORIZONTAL
MOUNT)
M8925
