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Pneumatic Control Manual 717.1

Temperature Section

Product/Technical Bulletin

Issue Date 1296

Part No. 14-1104-0 Rev. —

Code No. LIT-7171156

T-3100, T-3200, and T-3300 Series Controllers

The T-3100 and T-3300 Series proportional action

pneumatic thermostats are designed to maintain

temperature in accordance with the return air temperature

in terminal air conditioning units. The

T-3200 Series of pneumatic thermostats are designed to

control pneumatic actuators in single temperature, dual

pressure applications.

The T-3111 and T-3311 Series controllers are combination

pneumatic thermostats and valve actuators. The T-3111

provides proportional control of a steam or water valve on

a single temperature application, while the T-3311 provides

control in

dual temperature, dual pressure applications.

WARM

Figure 1: T-3100 Remote Mounted Thermostat and

T-3311 Valve Top Thermostat

Features and Benefits

❑

Models are Available in Direct-

reverse Acting or Reverse-direct

Acting

Allows seasonal change over from cooling to heating

or heating to cooling automatically

❑

Direct or Reverse Acting Models

Available with Liquid Filled

Temperature Measuring

Elements

Suits heating or cooling applications

❑

Models Available with an

External or Concealed Setpoint

Adjusting Screw

Field adjustable or concealed to maintain system

design as commissioned

❑

Valve Top Models Compatible

with

VG7000 Series Valves

The T-3111 and T-3311 are direct replacements for

the T-3110 and T-3310 Series Valve Top Actuators

Summary of content (16 pages)

PAGE 1
Pneumatic Control Manual 717.1 Temperature Section Product/Technical Bulletin Issue Date 1296 T-3100, T-3200, and T-3300 Series Controllers W A RM The T-3100 and T-3300 Series proportional action pneumatic thermostats are designed to maintain temperature in accordance with the return air temperature in terminal air conditioning units. The T-3200 Series of pneumatic thermostats are designed to control pneumatic actuators in single temperature, dual pressure applications.
PAGE 2
O rdering Information Table 1: Ordering Information Code Number Action (Proportional) Element Setpoint Adjustment Mounting Bulb External Remote Single Temperature Valve Top Single Pressure T-3100-2 Direct Acting T-3100-3 Reverse Acting T-3111-1 Direct Acting T-3111-2 Reverse Acting Bulb External T-3111-3 Direct Acting Averaging External T-3111-6 Direct Acting T-3200-1 DIR at 15 and 20 psig (103/138 kPa) T-3300-1 Concealed Averaging Concealed Remote Single Temperature Dual Pr
PAGE 3
D imensions E xte n d s to m a xim u m 5 /8 16 3 /4 19 3 -3 /8 86 5 -1 /8 130 S la v e C o n n e ction 1 /8 in ch N P T , In terna l T h re ad 4 -3 /4 121 S u p p ly A ir to R e stricto r B ra n ch 1 /4 6 R e stricto r B ra n ch M a rke d 4 -3 /4 121 3 7 6 1 -1 /2 38 C o n tro l A ir 1 /4 6 3 /4 19 5 -1 1 /1 6 144 42 C a p illa ry L e n g th 1067 E xte n d s to m a xim u m 8 -1 1 /1 6 220 6 -9 /1 6 167 5 /1 6 D ia m e te r 8 Figure 2: Dimensions and Mounting Details for T-3100, in.
PAGE 4
3 -3 /16 80 4-3 /4 1 21 B arbe d R e strictor T e e S la v e C o nn ection 1 /8 inch N P T , In te rn al T hrea d 4-9 /1 6 11 6 S ea ling C ap (O pe n B ra n ch ) 42 2-1/4 57 C a p illa ry L e n g th 1067 S up ply A ir C on n ection (R estricto r B ran ch ) 6 -9 /16 1 67 5/16 D ia m e te r 8 Figure 4: Exposed Adjustment for T-3111, in./mm C OOL W AR M S u p p ly A ir 3 /4 19 5 -3 /1 6 132 Figure 5: Mounting Details for T-3111, in.
PAGE 5
-1 /8 4 -3 /4 to m a xim u m 130 121 B a rb e d R e stricto r T e e S u p p ly (R e stricto r B ra n ch ) M a rke d 3 -1 /8 79 O u tp u t (O p e n B ra n ch ) 5 /8 16 3 /4 19 S w itch in g A ir C o n n e ctio n 1 /4 6 5 -1 /2 140 3 7 6 1 -1 /2 38 1 /4 6 1 3 /1 6 21 5 -1 3 /1 6 to m a xim u m 8 -1 3 /1 6 148 224 C a p illa ry L e n g th 1 8 457 A ve ra g in g E le m e n t L e n g th 96 2438 Figure 6: Dimensions and Mounting Details for T-3200, in.
PAGE 6
4 -3 /4 to m a xim u m 5 -1 /8 121 130 3 -3 /8 86 O u tp u t A ir C o n n e ctio n 5 /8 16 3 /4 19 S u p p ly A ir C o n n e ctio n 1 /4 6 5 -9 /1 6 141 3 7 6 1 -1 /2 38 1 /4 6 1 3 /1 6 21 5 -1 3 /1 6 to m a xim u m 8 -1 3 /1 6 224 148 C a p illa ry L e n g th 4 2 1067 6 -9 /1 6 167 5 /1 6 D ia m e te r B u lb 8 Figure 8: Dimensions and Mounting Details for T-3300, in./mm COO L HE A T 3/16 21 5-5/16 135 Figure 9: Mounting Details for T-3311, in.
PAGE 7
I nstallation Procedures Tubing Installation The T-3100, T-3200, and T-3300 Series Thermostats are supplied with barbed fittings for the supply and the output air connections. It is recommended that Type “FR” polyethylene tubing be used on the barbed fittings. Note: Cut tubing off square for a good fit on the barbed fitting. If “HP” or copper tubing is used, the barbed fitting must be removed and replaced with a compression fitting and an inline restrictor when necessary.
PAGE 8
C alibration Procedures Averaging Element In most cases, an averaging element will be installed in the air chamber of the terminal air unit in the following manner: 1. Install the element in a serpentine fashion across the top of the unit coil. 2. Secure the element along the entire length by using holders, T-275-101 (ordered separately), so that no part of the element touches the coil. The holder is very flexible and can be bent to any desired position. 3.
PAGE 9
T e m p e ra tu re S e t P o in t A d ju stin g D ia l F le xib le D rive r JC 5 3 0 9 (O rd e re d S e p a ra te ly) L o w L im it S e tp o in t A d ju stm e n t o n T w o E le m e n t C o n tro lle rs S w itch S ta ck N o t F u rn ish e d o n T -3 1 0 0 S e rie s R e ca lib ra tio n T o o l JC 5 3 6 0 (o rd e re d se p a ra te ly) (O u tp u t T e st P o rt) T e st C o n n e ctio n F o r C o n ce a le d o r R e m o te A d ju stm e n t M o d e ls F o r E xte rn a l A d ju stm e n t M o d e ls D ire ct A
PAGE 10
Temperature Setpoint Adjustment For T-3100 and T-3200 Series follow Steps 1 through 7. 1. Supply the instrument with the proper supply air pressure. 2. Insert the test gauge (JC 5310, ordered separately) and the probe assembly (JC 5361, ordered separately) into the output test port. Note: For Reverse Acting thermostats it will be necessary to remove the cover in order to turn the setpoint adjustment screw. 3.
PAGE 11
T e st P ro b e A sse m b ly (JC 5 3 6 1 , o rd e re d se p a ra te ly) T e st G a u g e (JC 5 3 1 0 , o rd e re d se p a ra te ly) O u tp u t P re ssu re T e st P o rt 1 /8 in ch N P T , In te rn a l T h re a d 10 15 20 25 5 0 30 Figure 14: Test Gauge T e m p e ra tu re a t E le m e n t 7 1 °F (2 2 °C ) se T CO OL H EA C lo ck i w 7 5 °F (2 4 °C ) D e sire d T e m p e ra tu re S e ttin g M id -p o in t o f D ia l 7 5 °F (2 4 °C ) P o in te r T CO EA OL H Figure 15: Temperature Set
PAGE 12
M aintenance and Restricted Adjustment Troubleshooting Procedures The dial pointer on externally adjusted models has tabs which are factory set to restrict the dial adjustment to a span of 15F° (7.5°F on either side of the pointer). The restriction can be changed to the spans indicated in Table 2 by bending up the appropriate tabs and flattening the factory set tabs. These instruments are designed so that a minimum of routine maintenance is required.
PAGE 13
A ccessories Table 3: Accessories (Order Separately) Description Hex Head Flexible Screwdriver Control Line Test Gauge and Adaptor Code Number JC 5309 JC 5310 Recalibration Tool JC 5360 Test Probe Assembly JC 5361 Averaging Element Holder for 3 inch (76 mm) Coil (See Figure 17.) Order QEO-1 from Temperature Control Specialties 2800 Laura Lane Middleton, WI 53562 (608) 836-9034 Restrictor Tee (.
PAGE 14
R epair Procedures T h e rm o sta t Actuators To replace the diaphragm, follow Steps 1 through 7 below. 1. Remove the eight screws holding the thermostat to the integral actuator. 2. Lift the thermostat exposing the diaphragm and remove the piston. 3. Turn the new diaphragm inside out and place it over the piston. Smooth out all of the wrinkles and release any air trapped between the head of the piston and the diaphragm, then pull the flange up.
PAGE 15
S pecifications Product T-3100, T-3200, and T-3300 Series Controllers Models See Table 1. Proportional Action See Table 1. Maximum Supply Pressure Ambient Temperature Limits Supply Air Connections Slave Type Element Range 25 psig (172 kPa) -20 to +150°F (-29 to 66°C) T-3100 T-3111 T-3200 T-3311 Barbed Restrictor Tee for 1/4 inch O.D. Polyethylene Tubing T-3300 Straight Connector for 1/4 inch O.D. Polyethylene Tubing; 1/8 inch NPT Barbed Fitting for 5/32 or 1/4 inch O.D.
PAGE 16
S pecifications (Cont.) Material Body All Models Die Cast Aluminum Cover All Models Die Cast Zinc Yoke T-3111 and T-3311 Die Cast Aluminum Diaphragm T-3111 and T-3311 Molded Synthetic Rubber Finish Accessories (Order Separately) Green Lacquer See Table 3. The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc.