User Guide

ManualsBrandsBarber Colman ManualsElectric Duplex Room ThermostatsTwo Stage SPDT Thermostat (55-85F)

Application

For on-off control applications requiring sequenced

switching of two heating devices or two cooling

devices.

Features

• Fixed switch differential.

• Adjustable staging differential.

• Dial stop pins to limit dial range.

• Lock cover screw kits available.

• Agency approval.

• Unit marked in °F or °C.

• Switch bases AT-607 and AT-608 available for

custom applications.

• Mounts on single or 2-gang switch box, 4" x 4"

(102 mm x 102 mm) surface box, or direct to wall

(24 Vac only).

Applicable Literature

• TAC Environmental Controls Cross-Reference

Guide, F-23638

• TAC Environmental Controls Reference Manual,

F-21683

• TAC Environmental Controls Application Manual,

F-21335

• TAC Pneumatic Products Catalog,

F-27383

TC-1151 Series

Electric Two-Stage, Two-Position

Room Thermostat

General Instructions

Summary of content (8 pages)

PAGE 1
TC-1151 Series Electric Two-Stage, Two-Position Room Thermostat General Instructions Application For on-off control applications requiring sequenced switching of two heating devices or two cooling devices. 90 80 70 Features 60 50 • Fixed switch differential. • Adjustable staging differential. • Dial stop pins to limit dial range. • Lock cover screw kits available. • Agency approval. • Unit marked in °F or °C. • Switch bases AT-607 and AT-608 available for custom applications.
PAGE 2
SPECIFICATIONS Thermostat Inputs Setpoint Dial Range: See Table-1. Sensing Elements: Two Bimetals. Differential: Switching, 2°F (1.1 °C) Staging, Adjustable 2 to 10°F (1.1 to 5.6°C), factory adjusted between 2 and 4°F, Thermostat Outputs Electrical: Switch Action, See Table-1. Amp Ratings, See Table-2. Connections: Coded screw terminals. Environment Ambient Temperature Limits: Shipping & Storage, -40 to 160°F (-40 to 71°C) Operating, 40 to 140°F (4° to 60°C). Humidity: 5 to 95% R.H., non-condensing.
PAGE 3
Standard Cover Standard + Insert Right Side Options Add “dash-number” (-XXX) suffix to base part number for desired option.
PAGE 4
Temp. Drop Temp. Drop B1 R1 C1 C 2nd Stage Heat (R1) 1st Stage Cool (B1) Note: B R 1st Stage Heat (R) 2nd Stage Cool (B) Thermostat is designed for either heat or cool applications, not heat and cool. B1 R1 B R 2nd Stage Heat L2 C C1 1st Stage Heat 7 8 1 2 L1 Parallel Heat Anticipation (Certain Models) 4 To Night Depression Switch and Power Suppy 10 Night Depression (Certain Models) Figure-1 Terminal Designation and Typical Wiring Diagram for TC-1151 Series.
PAGE 5
Warning: • Disconnect power supply before installation to prevent electrical shock and equipment damage. • Make all connections in accordance with the wiring diagram and in accordance with national and local electrical codes. Class I wiring is required unless all circuits to contacts are powered from a Class II source. Use copper conductors only.
PAGE 6
CHECKOUT After installing a thermostat, make an initial check of the switching action. Remove the thermostat cover by removing the two (2) thermostat cover screws. Verify the switch action by listening to and watching the switch contacts, using a volt-ohm meter between the proper sides of the switch, or by observing the controlled device. 1. Turn each setpoint dial to a temperature above ambient. First the "R" contact should make and then the "R1" contact should make. 2.
PAGE 7
ADJUSTMENTS Concealed Control Dial Knurled Dial Removal (See Figure-4 ) 1. Remove the thermostat cover. 2. Secure the control dial with your hand so that the dial does not rotate. 3. Place needle nose pliers on the knurled ring of the control dial at the points where the knurled ring is attached to the control dial. 4. Twist the pliers at each knurled ring attachment point until the entire knurled ring of the control dial is removed.
PAGE 8
4. Insert the dial stop pin in the appropriate hole on either (or both) side(s) of the control dial to restrict dial rotation. Setpoint Dial Dial Stop Pin Insertion Holes Needle Nose Pliers Dial Stop Pin Figure-6 Dial Stop Pin Insertion. MAINTENANCE Open areas at bottom and around base of thermostat should be kept clean and free from obstructions to allow proper flow of air. If switch contacts need cleaning, this may be done with a contact burnishing tool (TOOL-13).