Detailed Procedures; Preparing The Vma For Mounting - Johnson Controls VMA1400 Series Manual

16
Mounting and Wiring VMA1400 Series Controllers Technical Bulletin

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 TMZ1600 room sensor
•
room sensor cable or wire for connecting the room sensor to
the VMA
•
separate damper actuator for the VMA1430
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)
IMPORTANT: The VMA1410, 1420 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, as much as possible, from
water caused by leaking pipes, condensation, or dripping
solder from sweating pipe joints.
•
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.