Page 27
Example: Typical Zone Valve Control Wiring to JX for An
�
-condensing protec
�
on.
Wall
Thermostat
Wall
Thermostat
Transformer Field Supplied
110V/24V
110V/60Hz
Power
Supply
Zone 1 Valve
Existing
Isolation Relay
Zone 2 Valve
SPST Relay
TB1
Figure 26. Wiring for existing zone valves
L N 1 2 4
Example: Laars Power Vent Kit Wiring to JX
Laars Power Vent Kit
Example: Typical Zone Pump Control Wiring to JX for Anti-condensing protection
Terminals 2 and 3
are both 120V Neutral
NOTE:
Must have a dedicated boiler
pump (such as LLH) when using
this method.
NOTE:
If your board does not have ZC -
ZR Terminals contact the factory
as there may alternative methods
available using an additional relay.
NOTE:
The total power requirement of the Zone Valves should not
exceed the total capacity of the transformers. See Zone Valve
manufacturer's installation instructions for valve electrical
requirements.
Three Wire Zone Valves need an
Isolation Relay (if not using a zone
control board such as Figure 28).”
24 V Field Wiring.
Boiler or
LLH Pump
NOTE:
Must have a dedicated boiler pump (such
as LLH) when using this method.
Example: Typical Zone Valve Control Wiring to JX for Anti-condensing protection.
Zone Pump
NOTE:
If your board does not have ZC - ZR Terminals
contact the factory as there may alternative
methods available using an additional relay.
System or
Zone Pump
Boiler
or LLH
Pump
Terminals 2 and 3
are both 120V Neutral
WARNING
No Power to be applied to terminals 10-12 of TB1.
Sensor Connections Only!
Figure 27. Typical Zone Pump Control Wiring for
anti-condensing protection
Figure 28. Typical Zone Valve Control Wiring for
anti-condensing protection.
M
INI-
T
HERM
JX
Residential Boilers
®