Munters Green RTU RX User manual

Installation Manual
Green RTU RX Module
Climate Controllers
Ag/MIS/ImEn-2765-05/20 Rev 1.2
P/N: 116812
Green RTU
RX Module

© Munters AB, 2020 2
Green RTU RX Module
User Manual
Revision: N.1.2 of 07.2020
Product Software: N/A
This manual for use and maintenance is an integral part of the apparatus together with the attached
technical documentation.
This document is destined for the user of the apparatus: it may not be reproduced in whole or in part,
committed to computer memory as a file or delivered to third parties without the prior authorization of the
assembler of the system.
Munters reserves the right to effect modifications to the apparatus in accordance with technical and legal
developments.

© Munters AB, 2020 3
Index
Chapter page
1INTRODUCTION ------------------------------------------------------------------------------------------------------------------------------------------4
1.1 Disclaimer-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 4
1.2 Introduction----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 4
1.3 Notes ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 4
2RADIO RECEIVER MODULE INSTALLATION---------------------------------------------------------------------------------------5
2.1 Mounting the RX------------------------------------------------------------------------------------------------------------------------------------------------------------------ 5
2.2 Connecting the Output Devices to the Radio Receiver Module-------------------------------------------------------------- 7
2.3 Connecting the Output Devices to the Receiver Module Equipped with the Plug Connection
Format ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 8
2.4 Connecting the Output Devices to the Receiver Module Equipped with the Output Wire Loom
Format ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 9
2.5 Programming the Radio Receiver Module-------------------------------------------------------------------------------------------------------- 10
2.6 Applying Power to the Radio Receiver Module-------------------------------------------------------------------------------------------- 10
2.7 Resetting the Radio Receiver Module------------------------------------------------------------------------------------------------------------------ 12
2.8 Installing the Protection Hood ---------------------------------------------------------------------------------------------------------------------------------- 13
2.9 General Notes------------------------------------------------------------------------------------------------------------------------------------------------------------------- 14
3WARRANTY------------------------------------------------------------------------------------------------------------------------------------------------- 15

© Munters AB, 2020 4
1Introduction
1.1 Disclaimer
Munters reserves the right to make alterations to specifications, quantities, dimensions etc. for production
or other reasons, subsequent to publication. The information contained herein has been prepared by
qualified experts within Munters. While we believe the information is accurate and complete, we make no
warranty or representation for any particular purposes. The information is offered in good faith and with
the understanding that any use of the units or accessories in breach of the directions and warnings in this
document is at the sole discretion and risk of the user.
1.2 Introduction
Congratulations on your excellent choice of purchasing a GREEN RTU Receiver Unit!
In order to realize the full benefit from this product it is important that it is installed, commissioned and
operated correctly. Before installation or using the device, this manual should be studied carefully. It is
also recommended that it is kept safely for future reference. The manual is intended as a reference for
installation, commissioning and day-to-day operation of the Munters Controllers.
1.3 Notes
Date of release: May 2020
Munters cannot guarantee to inform users about the changes or to distribute new manuals to them.
NOTE All rights reserved. No part of this manual may be reproduced in any manner whatsoever without
the expressed written permission of Munters. The contents of this manual are subject to change
without notice.

© Munters AB, 2020 5
2Radio Receiver Module Installation
•Mounting the RX
•Connecting the Output Devices to the Radio Receiver Module
•Connecting the Output Devices to the Receiver Module Equipped with the Plug Connection
Format
•Connecting the Output Devices to the Receiver Module Equipped with the Output Wire Loom
Format
•Programming the Radio Receiver Module
•Applying Power to the Radio Receiver Module
•Resetting the Radio Receiver ModuleInstalling the Protection Hood
•General Notes
2.1 Mounting the RX
•Always mount the radio receiver module in clear open air.
•Mount the module in the horizontal plain with the window facing downwards as shown in the
Figure 1 below.
Figure 1: Mounting the Receiver
•Mount the receiver module onto a stainless steel receiver bracket using the modules mounting
slot as shown in Figure 2 below. Insert an M5 machined screw through the hole provided in the
top of the modules mounting bracket and lock this in place with a machine nut to secure the
module.

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Figure 2: Receiver Brackets
•Mount the receiver module along with its bracket on a solid pole or other suitable solid structure
as high is as practically possible. Refer to Figure 3 below as example.
Figure 3: Receiver on a Pole
•When mounting the receiver module and bracket to the outside of a building, make sure to
locate the module on the building wall that is facing the transmitter’s antennae. In built up areas
this may not be possible but test this location to make sure you obtain acceptable signal quality
before mounting the unit.
•It is generally best practice to locate the switching devices such as solenoids and relays as close
as possible to the receiver module. This will be explained in more detail under the “Connecting
the Output Devices to the Radio Receiver Module” section.
•NOTE!!!
oDo not mount the receiver module on any structure that is subjected to vibration. E.g.
Avoid mounting the receiver module on a valve riser assembly as the riser assembly is
subjected to vibration while water flow takes place.
oAvoid mounting the radio receiver module in a metal or concrete enclosure or structure.
Even a metal cage will negatively influence radio signal. It is acceptable to mount the
receiver module within a plastic enclosure as shown in Figure 4.

© Munters AB, 2020 7
Figure 4: Receiver on Plastic
•Avoid mounting the radio receiver in any location where corrosive gases are present.
•Do not mount the receiver module underground.
•Do not mount the receiver module in any location that can become flooded.
•Avoid mounting the receiver module where it will be subjected to water jet/s. E.g. Do not mount
the unit directly next to a sprinkler where the jet of water being emitted by the sprinkler hits the
receiver module.
•Avoid locating the receiver module in dense vegetation and foliage.
•Make certain acceptable radio reception is achievable when locating a receiver module in the
vicinity of high voltage power lines.
2.2 Connecting the Output Devices to the Radio Receiver Module
•The Green RTU RX radio receiver module is available in two output connection formats.
oThe output plug format as shown in Figure 5 below
Figure 5: Plug Format
oThe output wire loom format as shown in Figure 6 below
Figure 6: Wire Loom Format

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•It is advisable to locate the output devices to be switched by the radio receiver module, such as
solenoids and relays, as close to the receiver module as is practically possible. These output
devices are activated with a short DC pulse signal and long cable/wire run lengths between the
output device and the radio receiver module can be problematic (can cause intermittent
operation).
•We do not suggest that you exceed 5m in total cable/wire length between the radio receiver
module and the output device to be controlled. Use a wire size of 1.5mm² if you intend to locate
the output device/s away from the receiver module up to 5m away.
•The Green RTU RX radio receiver module uses a two wire 12VDC pulse signal of 60mSec in
length. Compatible output devices should be selected to meet this specification and tested
properly for reliable use with the radio receiver module. Consult with Munters for a list of
approved devices.
2.3 Connecting the Output Devices to the Receiver Module Equipped with the Plug
Connection Format
This version of the Green RTU radio receiver module is equipped with a 6 terminal pins and a plug (black
and blue) as shown in Figure 7 below.
Figure 7: Terminal Pins
Looking from the rear (the mounting slot end) of the radio receiver module the terminals are as follows:
•Terminal 1 – Common (Black)
•Terminal 2 – Common (Black)
•Terminal 3 – Output #1 (Blue)
•Terminal 4 – Output #2 (Blue)
•Terminal 5 – Output #3 (Blue)
•Terminal 6 – Output #4 (Blue)
Figure 8 below shows two solenoid valves that have wire to the radio receiver modules terminal plug. The
green wire (plus) from solenoid valve #1 is wired to the first blue terminal (terminal 3 being the closest
blue terminal to the black terminals). The green wire (plus) from solenoid valve #2 is wired to the second
blue terminal (terminal 4). The black wires (minus) are wired to the black terminals in no specific order.
The two black terminals are the same.

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Figure 8: Solenoid Valves
Wiring the 3 and 4 output would entail connecting the green wire for the 3rd output device to terminal 5
(blue block) and the green wire for the 4th output device to terminal 6 (blue block). The black wires from
both output devices would connect to either terminal 1 or 2 (the black blocks).
Once the wiring of the output devices to the terminal connector has been completed the connector can be
plugged into the pins on the base of the radio receiver module as shown in Figure 9 below.
Figure 9: Connecting the Pins
CAUTION We recommend to remove this terminal connector from the radio receiver module once a
year and to clean the pins on the module as well as to thoroughly clean the plug. Apply a
good quality anti rust inhibitor spray such as silicone before reattaching the connector to the
receiver module.
2.4 Connecting the Output Devices to the Receiver Module Equipped with the Output Wire
Loom Format
This version of the Green RTU radio receiver module is equipped with a short piece of 6 core cable which
is attached on one end to the radio receiver module using a waterproof joint. The other end of the cable
has 6 soldered tinted wire ends exposed with ends, ready for attaching to the output devices as shown in
Figure 9 below.

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Figure 10: Output Wire Loom Format Wiring
The 6 wires are allocated as follows -
•Red: Common
•Black: Common Reserved (Reserved for future use. Remove the temporary heat shrink if you will
use this wire)
•Yellow: Output #1
•Blue: Output #2 (Reserved for future use. Remove the temporary heat shrink if you will use this
wire)
•Green: Output #3 (Reserved for future use. Remove the temporary heat shrink if you will use this
wire)
•White: Output #4 (Reserved for future use. Remove the temporary heat shrink if you will use this
wire)
It is recommended to make a waterproof connection between these wires and the output device wires.
This can be achieved by terminating the connections in an additional enclosure or using a waterproof gel
type connector such as the sample shown in Figure 11 below.
Figure 11: Termination
2.5 Programming the Radio Receiver Module
The Green RTU RX radio receiver module is programmed using a Hand Held Programmer. Information
relating to this process is available in a separate document titled “Green RTU RX Module Programming
Guide”. If you do not have this document on record, feel free to contact Munters and we will forward a
copy.
2.6 Applying Power to the Radio Receiver Module
The Green RTU radio receiver module makes use of a 3.6VDC 19A/Hr Lithium-thionyl Chloride battery to
power the unit. This battery pack is equipped with a wire loom and a connector socket as shown in Figure
12 below