– 50 –
MULTIPLEXED VOLTAGE CHART
RESISTOR
VALUE
RESISTOR ID
SWITCH
CLOSED
OHMS IN
CIRCUIT
VOLTS DC
1000
RS1
RS1,2,3,4
0
0
2000
RS2
RS2,3,4
1000
0.30
4020
RS3
RS1,3,4
2000
0.55
8060
RS4
RS3,4
3000
0.76
RS1,2,4
4020
0.95
RS2,4
5020
1.10
RS1,4
6020
1.24
RS4
7020
1.36
RS1,2,3
8060
1.47
RS2,3
9060
1.57
RS1,3
10060
1.65
RS3
11060
1.73
RS1,2
12080
1.80
RS2
13080
1.87
RS1
14080
1.92
NONE
15080
1.98
UNPLUGGED
NA
3.30
IN-3
JUMPER
RS-04
MIXED AIR TEMP
RE-56
RS-03
SAFETY CKT STATUS
RE-09
TO
GND
RS-02
FLAME FAILURE
SW-72
RS-01
100% OA or 100% OUTPUT
IN-4
RE-27
RS-04
BURNER STATUS
RE-65
RS-03
FAN STATUS
RE-12
TO
GND
RS-02
CLOGGED FILTER
SW-09
RS-01
= 1.36
= 1.73
= 1.87
= 1.92
= 1.36
= 1.73
= 1.87
= 1.92
AUXILIARY UNIT ENABLE
MULTIPLEXED VOLTAGE
VALUES
CHECK ALL TERMINAL CONNECTIONS FOR TIGHTNESS
The DC voltage is to be checked at the UC-01 board
With the Fan Enabled:
When the fan status relay (RE-65) is energized, the
contacts will close and the VDC at IN-4 & GND will be
1.73.
With the Fan and Burner Enabled:
When the safety circuit relay (RE-56) is energized,
the contacts will close and the VDC at IN-3 & GND
will be 1.73. When the burner status relay (RE-27) is
energized, the contacts will close and the VDC at IN-4
& GND will be 0.76.
Содержание GAS-FIRED HEATERS
Страница 6: ... 6 ...
Страница 7: ... 7 ...
Страница 8: ... 8 ...
Страница 9: ... 9 ...
Страница 13: ... 13 ...
Страница 24: ... 24 TYPICAL SEQUENCE FOR MODULATING THERMOSTAT WITH 135 OHM CONTROLS ...
Страница 25: ... 25 TYPICAL SEQUENCE FOR MODULATING THERMOSTAT WITH 4 20 mA CONTROLS ...
Страница 64: ...4830 Transport Drive Dallas TX 75247 Phone 214 638 6010 Fax 214 905 0806 www appliedair com ...