8
To select Emergency Heat on any ModStat:
1. Press and hold the ModStat
Menu
button
2. When the mode display indicates
Emg
, release the
Menu
button; and immediately press and
hold the
Select
button to set the mode.
Heat Pump operation “B” reversing valve
By placing the O/B jumper (B) on both pins, the
GEN II
controller is configured for “B” reversing
valve operation. The operation and setup procedures are the same as with “O” mode reversing
valve, except the reversing valve will be energized for heat operation.
GEN II
Heat Pump Basic Configuration
The
GEN II
controller is shipped from the factory
for Gas Electric operation.
The controller must be field configured for Heat
Pump operation.
Heat Pump configuration:
1. Switch controller to OFF
(E)
.
2. Set the O/B jumper
(B)
on one pin for “O”
reversing valve (energizes for cool)
or
set the O/B jumper
(B)
on both pins for “B”
reversing valve (energizes for heat).
3. Set the HP jumper
(C)
on both pins for Heat
Pump operation.
4. Set the Priority jumper
(D)
on one pin.
5. Set the TIME / TEMP jumper
(Q)
on the
middle and upper pins.
6. Set NIGHT / DAY switch
(L)
for DAY position.
7. Set LOCK / UNLOCK switch
(P)
to UNLOCK.
8. Switch the controller to ON
(E)
.
9. Press the UP button
(N)
, and verify the “H”
(cut-out) temperature reads 126°F (52°C) on the controller display
(O)
.
NOTE: The heat cut-out temperature must not be changed from the factory setting.
GEN II
Heat Pump Advanced Feature Configuration
Heat Pump Capacity Control - Cool and Heat cut-out temperature adjustment
When the
GEN II
controller is configured for Heat Pump (HP jumper
(C)
on both pins), the Cool and
Heat cut-out temperatures are 45°- 126°F (7°- 52°C). The cut-out temperatures can be changed
with the following procedure:
Heat cut-out temp
– To eliminate the possibility of the Heat Pump tripping out on high head
pressure or short cycling in the heat mode, the heat cut-out temperature should never be changed
from the factory setting of 126°F (52°C).
1.
Cool cut-out temp
– Press the DN button
(N)
; “C” will be displayed, then the cut-out
temperature.
2. LOWER – Press the DN button. After the “C” is displayed, continue to hold the DN button until
the desired temperature is displayed; then release.
NOTE: The controller will not change the Cool cut-out lower than 40°F (4°C).
