Fireplace new platform product specification The reproduction of this datasheet is NOT allowed without approval of Computime Limited. All information and data contained in this datasheet are subject to change without notice. This publication supersedes and replaces all information previously supplied. Computime has no responsibility to the consequence of using the information described in this document. Copyright © 2014 Computime Limited. All rights reserved. Rev. 1.
Fireplace new platform product specification Scope: This document establishes the performance, design, test, and acceptance requirements for the fireplace new platform controller. Revision History Rev. Date (DD-MM-YYYY) 0.1 20 February 2014 0.2 09 April 2014 Second draft 0.3 15 April 2014 Third draft Add more description on Backlight(3.1.16) Define model option(3.1.3) Clear low battery operation(3.1.11) Define Receiver operation (3.2.2) Modified pulse define(5.1.
Fireplace new platform product specification Table of Contents 1 General Description .......................................................................................................................................... 1 2 System requirements...…………………………………………………………………………………………………2 3 Functional specifications................................................................................................................................... 3 4 RF Specifications .........................................
Fireplace new platform product specification 1 General Description The fireplace controller is able to control the fireplace through the 350MHz wireless control, including the temperature set function, detection and program control, and fan & ignition control function. It includes the remote and receiver. Copyright © 2014 Computime Limited. All rights reserved. Rev. 1.
Fireplace new platform product specification 2 System requirements To develop a RF remote and receiver control that will control the operation of a milli-volt gas valve and Grand mate Stepper motor on the fireplace controller from a transmitter. 2.1. Remote system block diagram: 2.2. Receiver system block diagram: Copyright © 2014 Computime Limited. All rights reserved. Rev. 1.
Fireplace new platform product specification 3 Functional description 3.1 Transimitter functions: LCD display: 3.1.1 The Remote with LCD to show the temperature set, room teamperatre, flame height, RF icon, low battery and child lock. 3.1.2 ℃ and ℉ degree selection: During system reset, all icons of the LCD display will be visible, after one second, the LCD displays will be initialized and the backlight (R/G/B) will be on simultaneously. The temperature scale is ℉ by default.
Fireplace new platform product specification 3.1.5 Manual Mode: Press the ON button once to turn on the fireplace with max flame height, and then press the OFF button to decrease flame height, the first two pressing with decrease flame height to lower level. The third pressing will be turn fireplace off. (Flame height adjustment only for ModelA_Tx1) ModelA_Tx2 and ModelB_Tx1 only Flame ON and Flame OFF, not flame height adjustment. Flame icon only showed max flame height and Off. . 3.1.6.
Fireplace new platform product specification 3.1.7 Auto mode: Press the AUTO button to enter the thermostatic mode. SET icon will be appeared on the lower LCD screen. In thermostatic mode, press ON button or OFF button to set the desired set temperature. Once the setting is completed, the transmitter will be automatically turned on the fireplace when the room temperature is below the set temperature. The transmitter will be turned off when above the set temperature.
Fireplace new platform product specification 3.1.13 ID code. There are 4 bit Dip switch for remote and receiver, the remote ID set must match receiver, If not, the remote will be can’t control the receiver. 3.1.14 Reset button: The Reset button in left of ID DIP switch, press the Reset button to reset the remote and initialization, re-select the ℉ or ℃ again. 3.1.
Fireplace new platform product specification 3.2. Receiver functional specification: 3.2.1. ID setting: The receiver ID must match with transmitter ID. The 4 position DIP switch will applied for receiver board. 3.2.2 Slide Switch: The slide switch should be used to perform the manual control or specific functions as defined for each individual receiver. The fireplace operation should start at remote position.
Fireplace new platform product specification 3.2.6 Battery: AA * 4 Alkaline battery for receiver power supply. The four AA battery lifetime should be enough to perform at least four operations ON and OFF in a day for minimum 240 days. The low battery monitoring circuit should indicate the low battery condition at 3.9V. The fireplace should shut down completely and receiver should not accept any command form transmitter once battery drops below 3.
Fireplace new platform product specification 5.1.4 Pulses define: 5.1.4.1 Wide pulse is defined as bit ‘0’ and narrow pulse as bit ‘1’. 5.1.4.2 Wide pulse width is 640us and narrow width as 320us, +/-10%. 5.1.4.3 Duration between two pulses ( pulse rising edge to previous falling edge): for next wide pulse: 640us and for next narrow pulse: 320us. 5.1.4.4 Duration between each16 bit command: 12ms +/-10% 5.1.4.5 Total Number of Command: 2.6s, +/-10% 5.1.4.
Fireplace new platform product specification 6 Software specification 6.1 Program flowchart of Start(Reset/power up) Start Initial Hardware port Read the DIP switch(pairing code) Read Option to set model Set backlight On (R->B->G) Display all icons Initial 10sec timer Check “ON” key press? Yes Toggle Display ℉ and ℃ No No Wait 10sec timeout? Yes 1 Copyright © 2014 Computime Limited. All rights reserved. Rev. 1.
Fireplace new platform product specification 6.2 Main Loop of transmitter 1 Check sensor and temp. conversion Open circuit Short circuit Check sensor valid? Display “E0” Display “E1” Sensor OK Less than 40℉ Greater than 99℉ Check Temp. range? between 40 and 99℉ Display “Lo” display Room Temp Display “Hi” Yes Low battery <3.4V? Low Battery icon No Low battery <3.
Fireplace new platform product specification 3 Display High Flame, send On command No AutoFlag =1 ? 9 Yes ON Key ? Yes No Increment Temp. value OFF Key? Yes AutoFlag Yes Decrement Temp.
Fireplace new platform product specification Model: MHNMSC1, MHNCMT1 only 4 Timer Set? Yes Timer = No TimeVal? Update display Yes No Clear Flame icon, turn off flame, clear Timer flag Send Off command 9 Flame on? No Yes Temp> max? Yes Clear Flame icon No Send Off command Sleep 6.3 Timer interrupt Read temp. timeout Timer timeout(1 min) Wake up TimerVal =TimerVal+1 Copyright © 2014 Computime Limited. All rights reserved. 1 Wake up 1 Rev. 1.
Fireplace new platform product specification 6.4 Key(I/O) interrupt Key interrupt Wake up 2 7 Mechanical specification 8 Regulatory specifications FCC Comply. 9 Environmental specifications Operating temperature: 0-50℃. Storage temperature: -10-60℃. 5-90% Humidity 10 Quality Quality parameters: all products must be fir for function. Any deviations from the product Specification will be considered a defect and will cause rejection of the product.
FCC Statement This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
