PRE-INSTALLATION INSTRUCTIONS (Cont’d)
OPERATIONAL DIFFERENCES
The 695-101 has the same features and funcons as the current
Carrier / BDP replacement (HH84AA021). The 695-101 does have
addional oponal features and some slight operaonal dierences
than the older obsolete Carrier / BDP units had. These opons and
operaonal dierences are listed below.
OLDER CARRIER/BDP DESIGNS
Older control centers used a SPST-NC or a DPST-NC relay for heang
blower relay operaon, and a DPDT relay for cooling blower and
humidier operaon.
1. On older Carrier / BDP models the low speed blower would sll
funcon, if the 24 volt transformer malfuncons. This will not
happen with the 695-101.
2. If the “JW1” jumper between “R” and “GH” terminals (see gure 2)
is cut a constant low speed blower will occur without any
thermostat signal. Also a signal applied to the “GC”or “Y” terminals
WILL NOT bring on the high speed blower during cooling mode.
NOTE: The “JW1” jumper MUST NOT be cut on heat/cool
applicaons.
3. The 24 volt circuit is fuse protected which is not true on earlier
Carrier / BDP models. A 3 amp automove type fuse is used to
protect the thermostat and transformer circuits from shorts.
NOTE: On the 695-101 a blown fuse will cause the blower to come on
and remain on unl the fuse is replaced.
The 695-101 uses a SPST-NO blower relay and DPST blower speed
change relay for blower operaon and a SPST-NO relay for humidier
operaon.
4. The “H” terminal (humidier) is energized with both the low speed
blower and the high speed operaon. NOTE: When in cooling
operaon the water supply to the humidier must be turned o. I.E.
no humidier operaon when operang in the cooling mode.
DO NOT USE THIS OPTION
ON “PAIRED” FURNACE
APPLICATIONS.
CAUTION
BLOWER SPEED OPTIONS
The 695-101 has dierent blower speed opons to match a specic
applicaon, see chart below. The blower speed opon used on the
original furnace control may be very dicult to determine.
CONTINUOUS LO-SPEED “G” BLOWER
The R32 resistor on the 695-101 can be cut (see gure 2) to have
heang (lo-speed) connuous blower with thermostat signal at “R” and
“G” terminals. This will also give a hi-speed blower (and 90 seconds o
delay) operaon with a thermostat signal at “R” and “Y” terminals.
24V Input From
Thermostat
695-101 “As Shipped” “G” Blower Opon
(Cut R32 Resistor)*
“W”
“GC” Hi-Speed
Cooling Blower
Lo-Speed
Heang Blower
“Y” No Blower Hi-Speed Cooling Blower
With 90 Sec. ‘O’ Delay
Lo-Speed Heang Blower With 75 Seconds
‘On’ Delay, Lo-Speed Heang Blower With 60
Seconds On Delay And Adjustable O Delay
(80 Seconds To 4 Minutes) And 105 Seconds
‘O’ Delay.
NOTE: When the R32 resistor is cut, “Y” from the thermostat and
outdoor unit must be combined at the 695-101 fan center terminal “Y”.
This will give a hi-speed blower on a thermostat signal to “R” an “Y”.
BLOWER TIME-OFF DELAY (HEAT)
The blower me-o delay in the heang mode is adjustable from 80
seconds to 4 minutes. The 695-101 comes factory set at 2 minutes 40
seconds. Refer to gure 1 if a change is desired, turning clockwise will
increase me delay while turning counterclockwise will decrease me
delay. We recommend that no adjustments be made as factory seng
will give opmum operaon on most systems.
INSTALLATION INSTRUCTIONS
1. Be sure all electrical power is turned o.
2. Remove the front panel on the furnace, and locate the fan center
control box, remove control box cover, exposing the old Carrier
/ BDP gas furnace control center .
3. Tag each wire as it is disconnected from the old furnace control
center. Disconnect ALL of the wiring hook-ups.
4. Remove the old Carrier / BDP furnace control center from the
control box.
5. Install the new 695-101 fan control center into the control center
box. Be sure that the top edge of the 695-101 is in the mounng
slot, just like the original board.
NOTE: If the 695-101 is not installed correctly i.e.; behind the slot an
electrical short could occur.
6. Reconnect ALL of the wire(s), that were removed in step 3, to the
proper terminals.
7. Restore electrical power to the furnace and put the furnace into
operaon. Allow the furnace to run through one complete heang
or cooling cycle.
8. If furnace funconed properly, replace all panels and leave this
instrucon sheet with the homeowner.
Figure 1
*See Figure 2