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Manual 2100-631
Page
41 of 53
All models have multiple speed direct drive blower
motors. If supply and return ducts are connected to
the unit, the ducts must be of adequate size. Refer
to the appropriate blower tables. See Tables 10, 11,
12, 13, 14 and 15 for maximum static pressures
acceptable. Note the minimum CFM for cooling
operation.
If voltage and duct design permit, (see blower tables)
single speed operation can be achieved as follows:
Blower Motor Speed Change
1. Disconnect power supply to unit.
2. Place desired blower motor speed lead wire to
“COOL” terminal of integrated furnace control
board.
3. Place desired blower motor speed lead wire to
“HEAT” terminal of integrated furnace control
board.
4. Place unused blower motor speed lead wire to
“UNUSED” terminal of integrated furnace control
board.
5. Energize the system in cooling and heating modes
to check for proper blower operation.
If it is desirable to have both HEAT/COOL blower motor
speed at the same speed, install a jumper wire between
“HEAT” and “COOL” terminals of the integrated
furnace control board, and place both unused motor
speed lead wires on the two “UNUSED” terminals on
the integrated furnace control board. (See Figure 18.)
Speeds
3-Speed Blower Motor
Low
Red
Medium
Blue
High
Black
Speeds
3-Speed Blower Motor
Low
Red
Medium
Blue
High
Black
Isolation *
Orange
Isolation *
Purple
FIGURE 18
FURNACE CONTROL BOARD AND BLOWER CONTROL
* NOTE: On 460 Volt motors, there are two motor isolation leads. The orange must connect with the black
high speed blower motor lead wire for medium and low speed blower operation. The purple wire must
connect with the blue medium speed blower motor lead wire for low speed blower operation. This is all
automatically accomplished with blower relays HSBR, MSBR and LSBR, and speed changes are all made
by changes at the integrated furnace control board.
TABLE 9
230 VOLT MOTOR SPEED TAPS
460 VOLT MOTOR SPEED TAPS
Содержание W24G3DA
Страница 13: ...Manual 2100 631 Page 13 of 53 FIGURE 2A MOUNTING INSTRUCTIONS FOR W42G W48G AND W60G ...
Страница 15: ...Manual 2100 631 Page 15 of 53 FIGURE 4 WALL MOUNTING INSTRUCTIONS FIGURE 5 WALL MOUNTING INSTRUCTIONS ...
Страница 16: ...Manual 2100 631 Page 16 of 53 FIGURE 6 COMMON WALL MOUNTING INSTALLATIONS ...
Страница 26: ...Manual 2100 631 Page 26 of 53 FIGURE 12 GAS PIPE CONNECTION W24G W36G W42G W60G ...
Страница 36: ...Manual 2100 631 Page 36 of 53 26 LIGHTING AND SHUTDOWN INSTRUCTIONS FIGURE 15 INSTRUCTION LABEL ...