Regency Horizon™ HZ42STE-10 Gas Fireplace | 3939|installationAC POWER ADAPTOR INSTALLATION (FOR SUREFIRE SYSTEMS)An AC power adaptor is supplied with this appliance and may be installed as a constant power source for the SureFire system.NOTE: AC power adaptor is not required when using GTMF Remote with fan control module and must be disconnected.IMPORTANT: Recommend removing the 4-AA batteries in the SureFire receiver.This will avoid battery leakage and power drainage. 4-AA Battery pack may be re-installed into receiver during power outages.919-063 10/09/141. Plug AC adaptor into a 120V wall outlet or into the 120Vreceptacle if installed inside the gas fireplace.2. Tuck any loose wires neatly underneath the firebox–insidethe fireplace.Note: Ensure that wires do not touch the underside of the firebox (Keep wires away from heat as much as possible).AC adaptorWire adaptor1AC POWER ADAPTOR INSTALLATION (FOR SUREFIRE SYSTEMS)OPTIONALWALL THERMOSTATA wall thermostat may be installed if desired, connect the wires as per the wiring diagram. Use table below to determine the maximum wire length.Note: Preferable if the thermostat is installed on an interior wall.Regency ® offers an optional programmable thermostat but any 250-750 millivolt rated non-anticipator type thermostat that is CSA, ULC or UL approvedmay be used.Thermostat Wire TableRecommended Maximum Lead Length(Two-Wire) When Using WallThermostat (CP-2 System)Wire Size Max. Length14 GA. 50 Ft.16 GA. 32 Ft.18 GA. 20 Ft.20 GA. 12 Ft.22 GA. 9 Ft.CAUTIONDo not wire millivoltwall thermostat wiresto 120V wire.