American Standard YSC036A Installation, Operation And Maintenance Manual page 7

RT-SVX21F-EN
Model Number Description
DIGIT 22 - REFRIGERATION SYSTEM
OPTION
0 Standard Refrigeration System
A Expansion Valve (standard for 3-
10 Ton R410a Units)
B Standard Refrigeration System
(not yet available for 3-10 Ton
R410a Units)
DIGIT 23 - REFRIGERATION
CONTROLS
Note: Applicable to Digit 7 = A
0 No Refrigeration Control
12
2 Frostat
3
3 Crankcase Heater
12
6 Frostat and Crankcase Heater
Note: Applicable to Digit 7 = E
0 No Refrigeration Control
12
1 Frostat
3
2 Crankcase Heater
12
3 Frostat and Crankcase Heater
DIGIT 24 - SMOKE DETECTOR
0 No Smoke Detector
A Return Air Smoke Detector
B Supply Air Smoke Detector
C Supply and Return Air Smoke
13,14
Detectors
DIGIT 25 - MONITORING
CONTROLS4
0 No Monitoring Control
15
1 Clogged Filter Switch
15
2 Fan Failure Switch
3 Discharge Air Sensing
4 Clogged Filter Switch and Fan
15
Fail Switch
5 Clogged Filter Switch and
Discharge Air Sensing Tube
6 Fan Fail Switch and Discharge Air
15
Sensing Tube
7 Clogged Filter and Fan Fail
Switches and Discharge Air
15
Sensing Tube
8 Novar Return Air Sensor
23
9 Novar Zone Sensor
Model Number Notes
1. Not available with Heat Pumps.
2. Available for R-410A units only.
3. Standard on all 15 SEER and 4-5
Tons Heat Pump R-22 units.
4. Not available with
electromechanical controls.
5. Manual outside air damper will
ship factory supplied within the
unit, but must be field installed.
6. High pressure control is standard
on all units.
7. Multispeed direct drive standard
on single-phase and 15 SEER
products. Belt drive standard on
11
three-phase 13 SEER and 6-10
ton R410a products.
8. Economizer with Barometric
Relief is for downflow configured
units only. Order Economizer
without Barometric Relief for
horizontal configuration.
Barometric Relief for horizontal
configured units must be
ordered as field installed
6
accessory.
9. Through the base electric
required when ordering
3
disconnect/circuit breaker
options.
6
10. Requires use of Disconnect or
Circuit Breaker.
11. Standard metering devices are
3
TXVs.
4,18
12. Frostat cannot be field installed
in electro-mechanical units.
13,14
13. The return air smoke detector
may not fit up or work properly
on the Precedent units when
used in conjunction with 3rd
party accessories such as bolt on
heat wheels, economizers and
power exhaust. Do not order the
15 return air smoke detectors when
using this type of accessory.
14. Return Air Smoke Detector
Tube15
cannot be ordered with Novar
Controls.
15. These options are standard
15
when ordering Novar Controls.
16. This option is used when
ordering Novar Controls.
17. Includes gas piping and shutoff
(field assembly required).
16
18. Not available with high
temperature stat accessory.
19. Requires hinged access panels.
20. Belt Drive Optional on three-
phase 15 SEER, R-410A units.
21. Phase Reversal protection is
standard on 3 - 5 ton units with
Direct Drive and 3-phase power
22. Available on Belt Drive (3-10
tons)
23. Novar Sensor utilized with digit
21 = (4) Novar 3051 Cotrols
without Zone Sensor
7