User guide

AZEL
TECHNOLOGIES
SP-81
UNIVERSAL SINGLE ZONE SWITCHING RELAY
INSTALLATION AND OPERATING INSTRUCTIONS
FEATURES
. Modern Design with Indicator lights (LEDs) on the front
panel which provide functional status
. Fuse protection
. Power surge protection
. High Quality Electronics Circuit Board which simplifies
wiring and control Operation
. High Capacity Field Replaceable Transformer
. Easy-Connect Terminals/Screwless Terminals for
Thermostat Connections
. Common 24VAC transformer terminal provides
compatibility with electronic thermostat
. Compatible with Most Digital/Mechanical Thermostats
. 100% Factory Tested
. RoHS compliance & Environmental Friendly - Do Not
Contain hazardous substances (heavy metals such as
lead, mercury, cadmium etc).
. Extended 3 year warranty
APPLICATION
The SP-81 universal single zone switching relay is
operated by low voltage thermostats or any other low
voltage controllers having a SPST switching action. The
SP-81 provides intermediate switching to permit up to two
separate line voltage loads such as circulators.
SPECIFICATIONS
Model: SP-81 Single Zone Switching Relay
Power Supply: 120 VAC, 50/60Hz
Dimensions: 6 3/8”(W) x 6 5/8”(H) x 2 3/4”(D)
Electrical Switch Rating: 10 A 1/3 HP @ 120VAC
Thermostat Anticipator Setting: 0.18 A
Enclosure: Flame Retardant Plastic 94V0
Shipping Weight: 2 lbs.
CAUTION!
1. Improper installation and operation of this control could result
damage to the equipment and possibly even personal injury. All
wiring must comply with national and local electrical codes,
ordinances, and regulations. Use Copper wires only. 120 VAC
wiring must have a minimum temperature rating of 75 C. 12-22
gauge wire is recommended for thermostat and 24 VAC source
connections. 12-18 gauge wire is recommended for 120 VAC
connections. Never connect the load terminals to a load that
takes more current than the amount listed for the relay in the
electrical ratings.
2. To prevent electrical shock hazard, disconnect power supply
before installing.
3. Azel Technologies is not liable for an special, incidental, indirect
or consequential damages resulting from the use of its products.
4. This literature is provided for informational purposes only.
L N NO C NC NO C NC S1 S1 S2 S2 S3 S3
120 Vac Relay 1 Relay 2 Sensor Inputs
The Front Lower cover can be
removed to access the wiring
Heat
Cool
OUT IN
24
Vac
L N
The Front Upper cover can be removed to
access the mounting holes or the fuse.
FUSE
SP-81
3 4 3
Med. Temp
N N L L
120 VAC
NC
C
NO
C
4 6 5 6
R C R W
T T
24 VAC
JUMPER
NO NC
L.E.D. SYSTEM STATUS INDICATION LIGHTS
RED light indicates thermostat calling for heat.
GREEN light indicates presence of power supply.
ROUGH-IN WIRING
Loosen the screw on the top and bottom of the enclosure and
remove the wiring cover by swinging it away from the
base(grey color) with the edge of the cover as pivot(see
Figure 1). Note: The top fuse cover can be removed for
mounting holes or changing the fuse.
The base has standard 7/8” (22mm) knockouts which accept
common wiring hardware and conduit fittings. Before
removing the knockouts, check the wiring diagrams and use
the chamber with common voltages.
Figure 1
Side view
MOUNTING
Mount the SP-81 to a suitable surface. Slotted keyholes and
standard holes are provided for mounting purposes.
Fuse Cover
Wiring Cover
0513-1