Rev 1 (P/N 3015-5514)
1
621 Hunt Valley Circle
New Kensington, PA 15068
Tel:
724-334-5000
Fax: 724-334-5001
Installation Guide
Bacharach Communications Adapter
HGM-MZ to Johnson Controls’ Metasys N2 Network
(Electrically Isolated N2 Port Version)
Instruction 3015-5514
Revision 1
October 2012
1. Introduction
The Bacharach HGM-MZ to Johnson Metasys N2 Communications Adapter enables an HGM-MZ Refrigerant
Monitor to communicate with a Metasys building management system. The following may be viewed on
Metasys operator stations.
•
Zone PPM readings
•
Flow status
•
Refrigerant selections
•
HGM internal health.
In addition, each HGM zone supports three levels of alarming through Metasys.
•
Leak
•
Spill
•
Evacuate
Each alarm threshold can be set through Metasys.
The N2 Communications Adapter can be used in conjunction with the MZ-RD Remote Display if desired.
Wiring details and operational limitations when using the MZ-RD are discussed below.
CAUTION:
The adapter is powered from the 120/240V Universal Power Supply connection on
the HGM main board. 120/240V is present on the lower left corner of this adapter within the
area shown on the board silkscreen.
Keep fingers away from this area when HGM is powered.
2. Adapter Installation Inside HGM-MZ
The communications adapter board will normally be installed in the HGM-MZ at the factory. It can, however,
be field installed by following the instructions below.
The following installation materials are needed for field installation of the adapter:
•
Qty (5)
6-32 x ¼” screws (standard finish)
