Specifications

Ammonia Gas Monitor – Multi Zone
8 Instruction 3015-5113
The AGM-MZ should be centrally located in the mechanical room and be readily accessible for easy visual
monitoring and servicing. The combined length of sample tubing, plus exhaust tubing, should not exceed
500ft. for any zone. The fresh air purge line should draw from an area that does not contain any ammonia
gas. The exhaust line should run to an outside location if possible. The combined length of the purge line
and the exhaust line cannot exceed 600 feet.
Ideally, two to three pick up points spaced around each chiller will provide sufficient coverage. It may be
necessary to perform a “smoke” test of the mechanical room to determine the best locations. The smoke test
would provide the pattern of air currents present in the mechanical room.
AGM-MZ / AGM-RD Ammonia Gas leak Monitor Mechanical Room Placement
The AGM-RD should be mounted outside of the mechanical room, or just inside the room’s doorway if the first
option isn’t possible. This is the “split architecture design” for safety of the operator. The AGM-RD can be
located up to 4500 feet from the AGM-MZ. The AGM-RD is the man machine interface by which you program
the AGM-MZ, acknowledge alarms and observe conditions inside of the mechanical room. Note that there
are two additional alarm relay contacts in the AGM-RD that can be programmed to alarm with “leak, spill,
evacuate, fault or monitor on”.
AGM-RD
Remote Display
Module outside of
mechanical room
AGM-MZ
Halogen
Gas
Monitor
Outside Hallway
Machine Room
Sample Inlet Pickup Points
Chiller
Exhaust Fan
Sample Inlet
Pickup Point
Auxiliary
Horn/Strobe
Fresh air purge
from area away
from ammonia
gas