Title:
MULTISTAGE THERMOSTAT APPARATUS
Document Type and Number:
Japanese Patent JPS57144838
Kind Code:
A
Abstract:
A multistage thermostat includes multistage cycler means 36 comprising a primary cycler 37 which controls a primary heating stage (heat pump) and a plurality of cyclers (38 to 40) which control respective stages of secondary heat (electric heat). The setpoint means Tsp is driven by a clock 11 and night setback and day setup means 12. The setpoint means and a temperature sensor Ts are differenced to form a signal for controlling the multistage cycler. The error signal is fed through a proportional constant means 21 and an integrator means 25 in parallel to control the multistage cycler means. To prevent the primary heating stage going off at setback when the temperature is low, and prevent secondary heating stages coming on on setup when the primary heating means can handle the load, there is a large linear temperature separation between the operation of the primary and the secondary heating means.
Inventors:
RONARUDO BENTON
Application Number:
JP1148082A
Publication Date:
September 07, 1982
Filing Date:
January 27, 1982
Export Citation:
Assignee:
HONEYWELL INC
International Classes:
F24F11/02; F24D11/02; G05B11/18; G05D23/19; (IPC1-7): F24D19/10; F24F11/02; F24H9/20