20
FIELD INSTALLED OPTION
ACCESSORIES
ELECTRONIC AIR CLEANER
1. Electronic air cleaner line voltage
power can be supplied from the
screw terminal “EAC” and a line
voltage neutral screw terminal on
the control board. See Figure 15.
This will power the electronic air
cleaner whenever the circulating air
blower is in operation.
HUMIDIFIER
2. Humidifier line voltage power can be
supplied from screw terminal “HUM”
to a line voltage neutral screw
terminal on the control board. See
Figure 15. This will power the
humidifier whenever the burner is on
and the circulating air blower is
operating in the heating mode.
NOTE: Maximum current –1.0 amps
for each option.
FURNACE TWINNING
INSTALLATIONS
Twinning operation of two furnaces,
installed side-by-side, connected by a
common duct system with main power
supplied by the same source, and
controlled by a common thermostat can
be done with the UTEC 1095-100
integrated control boards.
The Status LED will flash 4 times if the
twinning is not set up properly.
Single Stage Thermostat
(See Figure 16)
a. Control board “ONE” is on furnace
connected to the thermostat.
b. The 24 VAC supply to both control
boards must be in phase with each
other.
c. Connect the “W2”, “C” and “TWIN”
terminals to counterparts on each
control.
d. Both control boards must have
switch #3 in “ON” position.
e. Adjust the heat anticipator current to
0.15 amps.
Two Stage Thermostat
(See Figure 17)
a. Follow above instructions except
connct “W” and “W2” terminals on
control board “ONE” to comparable
terminals on other furnace control
board.
b. Adjust heat anticipator current to
0.15 amps on each stage of heating.
HIGH ALTITUDE KIT
Models with inputs over 50,000 btu/hr
installed at altitudes of 5,000 feet and
above require a low fire pressure switch
change. These may be ordered under
Option Code No. 278. Models with this
option code will have the additional
pressure switch, Kit no. RXGY-13,
packed with the furnace. This kit
includes pressure switch no. 42-23648-
07, which has a set point of -0.10
(
W.C.
and burner orifices which should be
changed for altitudes of 8,000 feet and
above for U.S. models. The low fire
pressure switch is installed in the lower
position on the furnace. Orifice size
information is shown on the table
below:
U.S.
0-7,999 Ft.
8,000 Ft. & Above
Natural gas
#42
#43
LP gas
#54
#55
CANADA
0-1,999 Ft.
2,000 Ft. to 4,500 Ft.
Natural gas
#42
#42
LP gas
#54
#54
NOTICE: DO NOT
make any attempt
to rerate the furnace by changing
orifices or the gas pressure. Allow the
natural derate of the gas to occur. The
natural derate will range from
approximately 1.8% to 2.8% per 1,000
feet.
FIGURE 15
LINE VOLTAGE CONNECTIONS
UTEC 1095-100 CONTROL BOARD
ST-A0761-01
Содержание RGLK
Страница 21: ...21 FIGURE 16 UTEC NO 1095 100 CONTROL BOARD TWINNING CONNECTION SINGLE STAGE OPERATION I685 ...
Страница 22: ...22 FIGURE 17 UTEC NO 1095 100 CONTROL BOARD TWINNING CONNECTION TWO STAGE OPERATION I684 ...
Страница 30: ...30 FIGURE 25 FILTER RETAINING RODS SIDE RETURN FIGURE 26 DOWNFLOW FILTER INSTALLATION ...
Страница 32: ...FIGURE 27 INTEGRATED FURNACE CONTROL IFC TROUBLESHOOTING GUIDE FOR UTEC 1095 100 32 ...
Страница 33: ...33 ...
Страница 34: ...FIGURE 28 UTEC 1095 100 INTEGRATED FURNACE CONTROL 34 ...
Страница 35: ...35 ...
Страница 36: ...36 CM 997 Rheem Manufacturing Company Air Conditioning Division Fort Smith Arkansas ...