SC-Z20
SPECIFICATION SUGGESTIONS
1.01
ZONE CONTROL SYSTEMS
A.
l. Provide a SC-Z20 zone control system manufactured by Specified Controls
Genera
to meet the performance as specified in this section. Each zone control system shall
meet the following requirements.
1.
The zone control system shall be composed of one logic panel, up to 20 zone
dampers with actuators, zone thermostats, and bypass damper(s).
2.
The zone control system shall be capable of controlling up to 20 zones and
must use proprietary fully modulating thermostats.
3.
The system shall have auto changeover and be capable of controlling two
stages of heat and two stages of cooling. The system shall also be
compatible with heat pump systems.
4.
The zone control system shall
require any field programming. A
not
laptop computer or service tool shall
be required for setup and
not
troubleshooting.
B.
. The zone control panel shall be suitable for the indoor ambient
Environment
conditions and shall be rated for operation between 32°F and 120° F.
C.
. Provide diagnostic LEDs for heating stages, cooling stages, fan,
Serviceability
and the heating or cooling request of each zone.
D.
. The zone control system shall
require a battery back-up.
No battery back-up
not
E.
. The zone control system shall be able to operate
Power and Immunity to noise
between 90% and 110% of nominal voltage rating and shall not be affected by
radio frequency interference (RFI).
1.02
ZONE DAMPERS
A.
Zone dampers shall be round, rectangular or VAV diffuser type. Round dampers
shall have a diameter of 6 inch to 36 inch. Rectangular dampers shall have a
minimum size of 8 inch by 8 inch. VAV diffusers shall have an inlet size of
6 inch to 14 inch.
1.
. 18 gauge (minimum) galvanized steel.
Frames
2.
. 18 gauge (minimum) galvanized steel.
Blades
3.
. Oil impregnated sintered iron bushings.
Bearings