Product Application This Comfort Control provides electronic control of 24 VAC single-stage heating and cooling systems. System Types Power • Gas, oil or electric heat with • Common wire only air conditioning • Common wire with battery backup • Warm air, hot water, high-efficiency furnaces, heat pumps Changeover Options •...
Table of contents Installation Appendices Pre-installation checklist ....2 Quick reference to controls ..10 Wallplate installation ......3 Quick reference to display ...10 Wiring ..........4 Battery replacement .....10 Wiring diagrams ......5 In case of difficulty .......11 Power options ........6 Accessories/replacement parts ..12 Comfort Control mounting .....6 Specifications ........12 Setup and testing...
Pre-installation checklist Package contents Check to make sure your package includes the following items: Quick Programmable Owner’s Guide reference Comfort Control card (wallplate attached to back) Wall anchors and AA alkaline mounting screws batteries (2) (2 each) Required tools & supplies •...
Wallplate installation Remove battery holder. Remove the wallplate from the Comfort Control as shown at left, then Pull here to remove wallplate from new Comfort Control. follow directions below for mounting. 1 Insert quick reference card in slot in back of Comfort Control. 2 Pull wires through wire hole.
Wiring CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before wiring. Wiring Keep wires in this shaded area 1 Loosen screw terminals, insert wires into terminal block, then re-tighten screws. 2 Push excess wire back into the wall opening.
Wiring diagrams Factory-installed jumper. Remove for 2-transformer systems only. • Provide Power Supply disconnect means and overload protection as required. In Installer Setup, set system type to Heat Pump. Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers SINGLE STAGE GAS FURNACE – SINGLE STAGE COOLING SINGLE STAGE OIL FURNACE –...
Power options & mounting AC Power The Comfort Control must be powered by 24 VAC power. Connect common Jumper To wire the Comfort Control for AC side of transformer power, connect the common side of to “B” terminal the cooling transformer to the “B” terminal as shown at left.
Installer setup Follow the procedure below to configure the Comfort Control to match the installed heating/cooling system, and customize feature operation as desired. Function Setting number Done Next Press to change settings To begin, press and hold the Press to advance to next function next buttons until the display changes Press...
Installer system test Follow the procedure below to test the heating, cooling and fan. System test System number status Done Next To begin, press and hold the Press to turn on system buttons until the display changes Press to turn off system Press to advance to next test next...
Auto Changeover (Setup Function 12) Auto Changeover is a feature used in climates where both air conditioning and heating are used on the same day. When the system is set to Auto, the Comfort Control automatically selects heating or cooling depending on the indoor temperature.
Quick reference to controls Digital display screen Battery holder Temperature buttons Press to adjust temperature settings Hold button Press to override programmed temperature control Function buttons Press to select the function displayed just above each button. (Functions change depending on the task.) Quick reference to display screen Current inside temperature Low battery warning...
In case of difficulty If you have difficulty with your Comfort Control, please try the suggestions below. Most problems can be corrected quickly and easily. Display is blank • Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. •...
In case of difficulty Heating equip- • Check Installer Setup, Function 1 (System Type), to make sure it is set to ment is running match the installed heating/cooling equipment (see page ). in cool mode Cannot change • Check Installer Setup, Function 1 (System Type), to make sure it is set to system setting match the installed heating equipment (see page ).