User Guide

RADIANT HEATING SYSTEMS
ZONE CONTROL MODULE
INSTRUCTION SHEET
The Uponor Zone Control Module
is a printed circuit control and
diagnostic device designed for
use with Uponor Thermostats,
Motorized Valve Actuators (MVAs),
Thermal Actuators and Zone Valves.
Two-wire Compatibility
An interinal timer circuit was added
for use with the two-wire thermal
actuators. This timer will automatically
activate the red LED after three
minutes to ensure the actuator(s) are
open and will close the ES terminals
for external relays or devices.
The module provides the following:
• A connection to the power
supply transformer
• Interconnections between the
individual thermostats and their
respective MVAs, thermal actuators
or zone valves
• The connection between the end
switches and the pump or boiler relay
The modules are internally fused
for protection from over current or
direct shorts from the power supply
transformer. The end-switch circuit is
also protected from over current and
a 2-amp fuse is factory installed.
Note: Because the ES terminals are
completely isolated, the modules no
longer require separate transformers
on R, C and ES terminals. Pay careful
attention to transformer sizing if
using only one transformer.
Zone Configurations
The Uponor Zone Control Modules
are available in both three- and
four-zone configurations. Boards can
be ganged together to expand the
number of zones. Allow
1
⁄4" between
boards when mounting end-to-end.
Connecting Instructions
Refer to the following instructions
to properly connect the module.
1. Connect modules in series via
a module jumper (provided).
2. Fasten the jumper within the
input and output blocks of
the corresponding modules
(see Figure 1 on page 2).
Wiring Instructions
Refer to the following instructions to
properly wire the module.
1. Strip
3
⁄8" insulation from the wire.
2. Ensure the wire is fully seated in
the terminal and that it does not
short to adjacent wires.
3. Twist loose stranded wire tightly.
Ensure no loose strands are present.
4. Tighten the terminal nut.
Note: Each terminal is equipped with
a jamb plate for accommodating
stranded wire. When reconnecting
the terminal, it may be necessary to
push the jamb plate back into place
with a suitable round punch prior to
reinserting the stranded wires. The
maximum number of connections
per terminal is four. If more than four
wires are required at the terminal,
bundle or wire nut the wires together
and run one wire to the terminal.
Note: If using Uponor 500 Series
controls, use a minimum of three-
wire thermostat wire for proper
functioning of the thermostat.
(Four wire is recommended.)
Fuse Replacement
Replace fuses on the board following
the guidelines below.
• 2A fuse for 50VA transformer
• 3A fuse for 75VA transformer
• 4A fuse for 100VA transformer
Zone Control
Module Instructions
Table 1: Product Descriptions
Table 3: Maximum Number of Actuators on a Transformer (Rating at 24VAC)
Part No. Part Description Width Height Depth
A3031003 Three-zone Control Module 7.25" 2.75" 1"
A3031004 Four-zone Control Module 7.25" 2.75" 1"
Part No. Part Description 50VA 75VA 100VA
A3020522 Motorized Valve Actuator, four-wire 7 10 14
A3010522 Thermal Actuator, four-wire 12 18 25
A3020416 Thermal Actuator, two-wire 12 18 25
A3030522 Thermal Actuator, two-wire 12 18 25
A3030523 Thermal Actuator, two-wire 12 18 25
Specifications
Power Input: 24VAC
End-switch Circuit: Dry contact equivalent nominal
24VAC, 2A maximum
Recommended Thermostat Wire Size: 18GA
Table 2: Specifications