Braemar CTB-20845 - Thermostat Wiring; Thermostat Installation; Thermostat Location; Thermostat Specifications

- Power source : Battery powered, 2x1.5V AA cells
- Battery life : 1 year typical
- Protection class : IP30
- Switch function/capacity : 36V AC or DC, 1.0A Maximum
- Temperature setpoint range : 5℃ - +35℃
- Temperature display range : -9℃ - +50℃
- Temperature control accuracy : 1℃
- Returned temperature : 2℃
- Storage temperature range : -20℃-+70℃
- Enclosure size: 100mm(L)x85mm(W)x25mm(H)
- Weight: 180g(excluding the cells)
3. Thermostat specifications
Relay
1A 36V DC/AC maximum
Thermostat
Thermostat connection point
Thermostat connection
point at Heater
4. Thermostat schematic
Gas Ducted
Heater
1. Thermostat wiring
Connection between thermostat and Braemar Gas
Ducted Heater is shown below.
CTB-20845S thermostat
The connection point
on Heater Circuit Board
The connection point
for thermostat
Note: ★ No polarity requirement for the thermostat wiring.
Wiring
Reset
PCB as below
Thermostat connection point to Heater
- 0 to 36Vac 50/60Hz or DC.
- 0.05 to 1.0Amps(Load per terminal)
- 1.0 Amps Maximum Total(All terminals)
Manual Thermostat Installation Instructions
2. Thermostat installation
To open thermostat, press
clip at bottom of thermostat
housing
Thermostat location:
- Thermostat should be located central to the main
living area approximately 1.5m above the floor.
The main living area should be confirmed with the
occupants.
- Avoid direct sunlight.
- Avoid mounting on an external wall.
- Avoid mounting near heat sources such as stoves,
televisions, etc’
- Do not locate in air stream from an outlet register.
- Do not locate in draughty areas.
- Do not locate in hallways.
- Do not locate adjacent to the return air grille.
- Always fill cable entry hole in wall.