Mounting and Wiring VMA1200 Series Controllers Technical Bulletin
10
Detailed Procedures
Preparing the VMA for Mounting
To prepare the VMA for mounting:
1.
Check that you have the following equipment:
•
VMA
•
TE-6700, TE-7000 (Europe only), or the TMZ1600 room
sensor
•
room sensor cable or wire for connecting the room sensor to
the VMA
2.
Check that you have the following tools:
•
8 mm (5/16 in.) square wrench or 10 mm (3/8 in.) 12 point
socket for actuator collar screw
•
pliers to turn the damper shaft (if needed)
•
8 mm (5/16 in.) hex nut driver or 4 in. extension for 5/16 in.
socket and power screwdriver for self-drilling screw
•
3.5 mm (9/64 in.) drill bit (optional)
Note:
The VMA requires a damper shaft protrusion of at least
44 mm (1-3/4 in.) from the VMA mounting surface.
3.
Ensure the VMA installation site meets the following
environmental requirements:
•
The VMA location is protected from direct contact with water
caused by leaking pipes, condensation, or solder from sweating
reheat pipes.
•
The atmosphere is free of explosive vapors or escaping gases.
•
The atmosphere is free of exposure to corrosive chemical or
salt vapors, which might damage electrical equipment.
•
The temperature is maintained between 0 to 50
°
C
(32 to 122
°
F), with the relative humidity (non-condensing)
maintained between 10 and 90%. These are operating limits.
Flow measurement accuracy suffers if the ambient temperature
varies widely within this band.
4.
Make sure the VMA mounting location has adequate clearance for
future servicing.