Instruction/ maintenance manual of the product VAV-SVX02B-EN Trane
Go to page of 16
Ins talla ti on/ Op er a t ion Maint enan c e V ar i T r ane ™ Pne umati c Con tr ols V A V -S V X0 2 B-EN March 2002.
V A V -SVX02B-EN Thermost at Selec tion and Location In general, both one- and two-pipe thermost ats have a gain of 2.5 psi per degree F ahrenheit, unless special thermosta ts are used that provide a different g ain.
3 V A V -SVX02B-EN Thermostat Specif icat ions TP970 S eries Pneumatic T -stats Maximum Safe Air Pressure: 25psi (172 kPa) Maximum S afe Air T emperature: 150°F (66°C) Throttling Range: 2–1 0°F (1–5°C) Gain: 2.5 psi/ °F Adjustable Ope ra t ion Pneumatic thermost ats modulate out put air pressure in respons e to room air temperature.
V A V -SVX02B-EN Inst alla tion and Oper a t ion The reversing relay is a proportional, non-bleeding device for use in pneu- matic control systems where a propor - tional signal from a controlling device must be reversed (see Figure 5). The most common use of the reversing relay is to c hange the action of a pneumatic thermostat.
5 V A V -SVX02B-EN Re v er sing Rela y Calibrat ion By using the “bias” adjustment on the relay , t he factory-set 8.0 – 9.0 “cross- over” can be c hanged. T o recalibrate, the relay should be connected as illustrated in F igure 8. F igure 8 – Rec a libra ting Reve rsing Re lay If the new desired “cross-over” pressure is 1 1 .
V A V -SVX02B-EN Model 30 1 1 The model 30 1 1 Pneumatic V olume Regulator (PVR) is capable of operating with normally-open or normally-closed air valves and can operate with either direct-acting (DA) or reverse-acting (RA) thermostats. F igure 9 – Accepta ble Installa tion Positions Ins ta lla tion 1 .
7 V A V -SVX02B-EN Use the following procedure to set-up the PVR: 1 . Select damper action (NO or NC). Loosen damper selection switc h 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.
V A V -SVX02B-EN Calibration P r oced ur es Calibr a ti on P roc e dure (Steps 1– 4 apply to all ther mos t a t m odels) 1 . Be sure the PVR is installed correctly and that all connections are hooked up to the proper ports. See Figure 9 for unit appl ication.
V A V -SVX02B-EN 9 Spe cifica tions (30 1 1) Differential Pressure Range: 0 to 1 .0 in. wg Minimum Set point Range: 0 to 1 .0" H 2 O Maximum Set point Range: minimum to 1 .0 in. w g Operating Static Range: 0.25 – 6.0 in. wg Sp e cif ic ations (30 1 1) Normal Supply Air Pressure: 20.
V A V -SVX02B-EN 10 Model 350 1 The model 350 1 Pneumatic V olume Regulator (PVR) is capable of operating with normally-open or normally-closed air valves and can operate with either direct-acting (DA) or reverse-acting (RA) thermostats. Adjusting the Reset Span (350 1) The reset span is factory-set at 5 psi.
V A V -SVX02B-EN 11 Calibration P r ocedures Calibr ation Pr oce dure (Steps 1– 4 apply to all ther mostat 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, whic h are connected to the lines to the flow sensor .
V A V -SVX02B-EN 12 Spec if ica t ions (350 1) Differential Pressure Range: 0 to 1 .0 in. wg Minimum Setpoint Range: 0 to 1 .0" H 2 O Maximum Setpoint Range: minimum to 1 .0 in. w g Maximum Setpoint Range: 6.0 in. wg Normal Supply Air Pressure: 20.
V A V -SVX02B-EN 13 MCP -3631—Rotary Pneumatic D amper Ac tuat or Desc ription: Rotary actuators mounts to a standard ½" diameter shaf t by a loc king collar and bushing.
V A V -SVX02B-EN 14 Constant V ol ume Dual-Duct Calibration (30 1 1) This calibration procedure is used when a constant volume of air must be maintained through a unit. On a dual- duct unit, a constant-volume disc harge sensor is used to measure the air leaving the unit.
V A V -SVX02B-EN 15 Thermostat Range: 3 – 8 psi Heating V alve = 5 psi range Thermostat Range: 8 –13 psi Cooling V alve = 5 psi range Approximately 1 0 0 0 cfm di vided by 5 psi = 200 cfm/1b* *Due.
T rane An American Standard Company www.trane.com For more information contact your local district office or e-mail us at comfort@trane.com Liter ature Order Number V AV - S V X02B - EN Fil e Number S.
An important point after buying a device Trane VAV-SVX02B-EN (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Trane VAV-SVX02B-EN yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Trane VAV-SVX02B-EN - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Trane VAV-SVX02B-EN you will learn all the available features of the product, as well as information on its operation. The information that you get Trane VAV-SVX02B-EN will certainly help you make a decision on the purchase.
If you already are a holder of Trane VAV-SVX02B-EN, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Trane VAV-SVX02B-EN.
However, one of the most important roles played by the user manual is to help in solving problems with Trane VAV-SVX02B-EN. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Trane VAV-SVX02B-EN along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
