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ManualsBrandsAZEL ManualsRelayi-Link SERIES ZONE VALVE CONTROLS FOR HYDRONIC / RADIANT FLOOR HEATING SYSTEMS

AZELAZEL

TECHNOLOGIES

SZ-84/86DX

MULTI- ZONE ZONE VALVE CONTROL

INSTALLATION AND OPERATING INSTRUCTIONS

FEATURES

Front panel indicator lights

Field selectable Priority

Priority timer for protection of a priority zone malfunction

and prevention of freeze-ups in the heating zones

Unlimited zone expansion

Dual Isolated End Switches

Three-minute End Switch delay timer for two wire type

zone valve applications. Circulator will start only after

the zone valve is fully opened.

DIP switch for easy setup of two wire type zone valve

applications. No need to hook up wire jumper on the

third and fourth terminals on each zone

Works with two, three or four wire type zone valves and

thermostats

Compact and modern design

Fuse protection

Safety design with all electronic components hiding

behind the enclosure

Simplified wiring

Contractor friendly PCB layout

Easy-Connect Screwless Terminals

24VAC transformer output with common terminal

provides compatibility with electronic thermostats

Universal thermostat compatibility

100% Factory Tested

Extended three year warranty

APPLICATION

The series multi-zone zone valve controller is

operated by low voltage thermostats or any other low

voltage controllers having an SPST switching action.

The -Link controller provides intermediate switching to

permit up to six zone valves and a boiler operating control

in a multi-zone hydronic heating system.

Intelligent Linking System ( -Link) allows unlimited zone

expansion with additional -Link controllers.

The panel provides EZ screwless terminal blocks for

connections to the thermostats. LED indicators on the front

panel provides functional status and easy troubleshooting.

i-Link

Field

selectable priority with protection timer prevents freeze-

ups in the event of a priority zone failure. The three-minute

delay timer let the two wire type zone valve fully open

before turning on the circulator.

MOUNTING

Mount the Link controller to a suitable surface. Slotted

keyholes and standard holes are provided for mounting

purposes.

ROUGH-IN WIRING

Loosen the screws on the top and bottom of the enclosure

and remove the wiring covers by swinging them away from

the base(grey color) with the edges of the covers as pivot(see

Figure 1).

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.

SPECIFICATIONS

Model: SZ-84DX 4 Zone Valve Control

SZ-86DX 6 Zone Valve Control

Power Supply: 24 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: 3 lbs.

CAUTION!

1. To prevent electrical shock hazard, disconnect power supply

before installing.

2. All wiring must comply with national and local electrical codes,

ordinances, and regulations.

Never connect the load terminals to a load that takes more

current than the amount listed for the relay in the electrical

ratings.

3. Azel Technologies is not responsible for damages resulting from

misuse of its products.

4. 12-22 gauge wire is recommended for thermostat connections.

5. This literature is provided for informational purposes only.

Figure 1

Side view

Summary of content (4 pages)

PAGE 1
AZEL TECHNOLOGIES SZ-84/86DX MULTI- ZONE ZONE VALVE CONTROL INSTALLATION AND OPERATING INSTRUCTIONS APPLICATION SPECIFICATIONS The i-Link series multi-zone zone valve controller is operated by low voltage thermostats or any other low voltage controllers having an SPST switching action. The i-Link controller provides intermediate switching to permit up to six zone valves and a boiler operating control in a multi-zone hydronic heating system.
PAGE 2
OPERATION ELECTRONIC THERMOSTATS When any zone (thermostat) calls for heat, the corresponding green light turns on and zone valve is energized. When zone valve is fully opened, green light turns into orange light and End Switches (X1-X1 and X2-X2) are closed (to start boiler and circulator control). ALL i-Link controls are compatible with 2, 3 or 4 wire type thermostats. 24VAC Out can be used to supply power to the thermostat.
PAGE 3
TYPICAL WIRING DIAGRAMS 24VAC Input JUMPER 3&4 ON Zone 1 2 3 4 5 6 THERMOSTATS W R W R 24Vac In 24Vac Out ZONE EXPANSION R R 1 T1 T1 T2 T2 T3 T3 C C R 2 3 W R W R W R MASTER W TIMER ON OFF SLAVE T4 T4 T5 T5 T6 T6 OFF ON ZONE 1 PRIORITY ES Delay Timer SZ-84/86DX Zone Valve Control GREEN - CALLED FOR HEAT X1 X1 X2 X2 End SW 1 End SW 2 Y Y R R Y Zone 1 Y R R Zone 2 Y Y R R Zone 3 Y Y R ORANGE - END SWITCH ENERGIZED R Zone 4 Y Y R R Y Zone 5 Y R R
PAGE 4
TROUBLE SHOOTING When 24VAC is supplied to i-Link controllers, the green power light should be on. ! If the thermostat is closed and green zone light is on, the power should be supplied to the zone valve. If the zone valve is not actuated or if the zone valve end switch is not closed (light is not turning orange color), check the zone valve for functionality. ! If green zone (1-6) light is on all the time, check the thermostat for functionality.