Trane VAV-SVX02B-EN - Manuals

Page 2 - Thermostat Piping; Thermostat

VAV-SVX02B-EN Thermostat Selectionand Location In general, both one- and two-pipethermostats have a gain of 2.5 psi perdegree Fahrenheit, unless specialthermostats are used that provide adifferent gain. The major differencebetween them is that a one-pipethermostat is considered a low-capacity thermo...

Page 3 - Specifications; Output P

3 VAV-SVX02B-EN Thermostat Specifications TP970 Series Pneumatic T-statsMaximum Safe Air Pressure:25psi (172 kPa)Maximum Safe Air Temperature:150°F (66°C) Throttling Range:2–10°F (1–5°C) Gain:2.5 psi/°F Adjustable Operation Pneumatic thermostats modulateoutput air pressure in response to roomair tem...

Page 4 - Installation and Operation; Reversing Relay; Figure 6 – Reversing Relay Connections; PSI In

VAV-SVX02B-EN Installation and Operation The reversing relay is a proportional,non-bleeding device for use in pneu-matic control systems where a propor-tional signal from a controlling devicemust be reversed (see Figure 5). Themost common use of the reversingrelay is to change the action of apneumat...

Page 5 - Calibration

5 VAV-SVX02B-EN Reversing Relay Calibration By using the “bias” adjustment on therelay, the factory-set 8.0–9.0 “cross-over” can be changed. To recalibrate,the relay should be connected asillustrated in Figure 8. Figure 8– Recalibrating Reversing Relay If the new desired “cross-over”pressure is 11.0...

Page 7 - Figure 12– Adjusting Reset Span

7 VAV-SVX02B-EN Use the following procedure to set-up the PVR: 1. Select damper action (NO or NC). Loosen damper selection switch screw and align to either the NO or NC pointer with damper pointer and tighten screw. 2. Now determine the type of thermostat that will be used. If a direct-acting thermo...

Page 8 - Calibration Procedure (Steps 1–4 apply to all thermostat models); Figure 13 – Connections of Direct /Reverse-Acting

VAV-SVX02B-EN CalibrationProcedures Calibration Procedure (Steps 1–4 apply to all thermostat models) 1. Be sure the PVR is installed correctly and that all connections are hooked up to the proper ports. See Figure 9 for unit application. 2. Remove the caps on the tees which are connected to the line...

Page 10 - Installation

VAV-SVX02B-EN 10 Model 3501 The model 3501 Pneumatic VolumeRegulator (PVR) is capable of operatingwith normally-open or normally-closedair valves and can operate with eitherdirect-acting (DA) or reverse-acting(RA) thermostats. Adjusting the Reset Span (3501) The reset span is factory-set at 5 psi.Th...

Page 11 - Calibration Procedure (Steps 1– 4 apply to all thermostat models); Direct-Acting Thermostat

VAV-SVX02B-EN 11 CalibrationProcedures Calibration Procedure (Steps 1– 4 apply to all thermostat models) 1. Be sure the PVR is installed correctly and that all connections are hooked up to the proper ports. 2. Remove the caps on the tees, which are connected to the lines to the flow sensor. Connect ...

Page 15 - Min 0 cfm

VAV-SVX02B-EN 15 Thermostat Range: 3–8 psiHeating Valve = 5 psi range Thermostat Range: 8 –13 psiCooling Valve = 5 psi range Approximately 1000 cfm divided by 5 psi =200 cfm/1b* *Due to the relationship between velocitypressure and cfm; for both the cooling andheating PVR, a linear relationship betw...

Page 16 - Figure 18 –Typical Constant-Volume Single-Duct Piping Diagram

TraneAn American Standard Companywww.trane.com For more information contactyour local district office ore-mail us at [email protected] Literature Order Number VAV- SVX02B- EN File Number SV-TD-VAV000- SVX02B-EN- 0302 Supersedes VAV-SVX02A-EN & VAV-IOM-6 St ocking Location La Crosse Trane has a p...