AZEL TECHNOLOGIES INC.
Zone Valve Controls
NE
W
Intelligent Linking Concept for Zone Controls
UNLIMITED ZONE EXPANSION
PRIORITY TIMER PROTECTION
END SWITCH DELAY TIMER FOR
TWO WIRE TYPE ZONE VALVE
www.azeltec.com
i-Link :LEADING CONTROLS FOR THE 21ST CENTURY
The i-Link series Zone Valve Controls simplify the field wiring and yet control up to six zone valves in a multi-zone hydronic heating system.
The contractor friendly Printed Circuit Board eliminates the problem caused by incorrect wiring and saves hours of installation time. There
would be no more “messy” look of conventional zone valve installations.
Intelligent Linking System (i-Link) allows unlimited zone expansion with additional i-Link controllers. Field selectable priority with Priority
Protection Timer ensures other zones get heat every one hour and prevents freeze-ups in the event of a priority zone failure. The End Switch
delay timer let the two wire type zone valves fully opened before turning on the circulator. The panel provides EZ screwless terminal blocks for
connections to the thermostats and zone valves. In addition, LED indicators on the front panel provide functional status and easy troubleshooting.
From design to manufacture, each i-Link unit is built on the foundations of quality and reliability. Azel products are quality controlled in order to
achieve “total customer satisfaction” - a foundation that you can rely on.
GENERAL FEATURES:
SZ-86DX with both covers removed
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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 for SZ-84/86DX
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
Safety design with all electronic components hiding behind the
enclosure for SZ-84/86DX
Fuse protection
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
Wiring Diagram
24VAC Input
ADDITIONAL FEATURES FOR SZ-V4/SZ-V6
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Isolated End Switch
Priority End Switch for utilizing full functionality of high
efficiency Mod-Con boilers.
Pre-wired terminals for circulator
SPDT Priority zone relay switch (N/O Com N/C). Capable of
prioritizing DHW pump in a 2-pump system
50VA replaceable transformer
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
R
C
2
3
W
R
MASTER
W
R
W
R
TIMER
OFF
SLAVE
W
T4 T4 T5 T5 T6 T6
ON
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
Zone 1
R
Y
Y
R
Zone 2
R
Y
Y
R
R
Zone 3
Y
Y
R
Zone 4
R
ORANGE - END SWITCH ENERGIZED
Y
Y
R
Zone 5
R Y
Y
R
R
Zone 6
Do Not Use
* Set DIP Switch
Jumper3&4 to ON
To T T
On Boiler
SZ-V6 WITH COVER REMOVED
THERMOSTAT
(eg. Azel D-135EB)
TYPICAL WIRING DIAGRAM
TT on Boiler with
DHW TT Terminals
DHW
Boiler T
Control T
Boiler/ T
Burner
Control T
MASTER
SLAVE
JUMPER 3&4
END
ON
24VAC OUT ZONE EXPANSION SWITCH ZONE 1
FUSE 2.5 AMP MAX
1 2 3 4 5 6
C 1
R
TIMER
OFF
2
3
R
W
R
W
THERMOSTATS
R
W
R
W
R
W
R
W
X1 X1 T1 T1 T2 T2 T3 T3 T4 T4 T5 T5 T6 T6
X X
ON
ZONE 1 PRIORITY
ON
OFF
XX Delay Timer
POWER
T1 T2 T3 T4 T5 T6
WIRING FOR PRIORITIZING
DHW CIRCULATOR
PRIORITY Z1 Z2 Z3 Z4 Z5 Z6
ZONE VALVES
N L
N L
120 VAC CIRC
L N
N L
120 VAC CIRC
NC COM NO
1
2
3
4
Zone 1
1
2
3
4
Zone 2
Do Not Use
1
2
3
Zone 3
4
1
2
3
Zone 4
4
1
2
3
Zone 5
4 1
2
3
Zone 1
4
Zone 6
* Set DIP Switch
Jumper3&4 to ON
N
L
ZONE CIRCULATOR
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.
Model:
NC COM NO
Zone 1
SZ-V4 4 Zone Valve Control with transformer
SZ-V6 6 Zone Valve Control with transformer
Power Supply:
120 VAC, 50/60Hz
Dimensions:
11”(W) x 6 5/8”(H) x 3”(D)
Electrical Switch Rating: 10 A 1/3 HP @ 120VAC
Thermostat Anticipator Setting:
0.18 A
Enclosure:
Aluminum
Shipping Weight:
5 lbs.
N
L
DHW CIRCULATOR