Vyper Preinstallation Site Checklist; Blower Motor Rotation - Johnson Controls Frick vyper VYA PG -46 Service Manual

S100-200 IOM (MAY 08)
Page 18
(Where Applicable)
Before attempting to install a Vyper
perform a site inspection to assure that the following require-
ments are met.
• Verify that the coolant (water or glycol) is available for the
Vyper ™ heat exchanger connections. The coolant should
be hard piped in accordance to all local and national piping
codes. Suffi cient coolant fl ow and temperature levels must
be available to the Vyper
• Verify that the compressor package temperature sensors
are RFI suppression type (639A0151G01)
• Incoming power cables must enter through the panel sup-
plied on the top of the left side of the unit. Power cables
must be in accordance with local and national electrical
codes and current safety standards. See Power wiring
section for more details.
• Verify that the power cable lengths from the Vyper to the
compressor motor do not exceed 50 feet.
• Verify that motor is suitable for Inverter duty service:
20-100% speed. Motor must have thermal protection per
NEC 2005. (RTD, Thermostat, Thermister)
• Verify that ambient temperature remains within the rec-
ommended operating range of 40-135°F. If the drive is
to operate below 40°F provide enclosure ambient space
heating.
• All wiring must be contained in metallic conduit. Use
of PVC or other materials is not acceptable.
The Blower Motor rotation is marked on the blower assembly and is to be such that the blower draws into the assemly through
the screen and pushes down and through the motor.
Figure 9 - Blower Assembly
VYPER
™
VYPER PREINSTALLATION SITE CHECKLIST
™ Drive system, please
™ VSD at installation.

BLOWER MOTOR ROTATION

VARIABLE SPEED DRIVE
™
INSTALLATION
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Figure 10 - Blower Motor Rotation