WaterFurnace Envision2 - Manual (Page 38)

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ENVISION 2 COMPACT INSTALLATION MANUAL
1. Accessory Relay2 – A second, configurable, accessory
relay on the AXB is provided that can be cycled with
the compressor 1 or 2 , blower, or the Dehumidifier (DH)
input. This is to complement the Accessory 1 Relay on
the ABC board.
2. Analog Out – A standard 0-10VDC analog output is
provided. This output can be used to drive modulat-
ing dampers etc.
3. Variable Speed Pump or Modulating Water Valve
- This input and output are provided to drive and
monitor a variable speed pump. The VS pump output
is a PWM signal to drive the variable speed pump. The
minimum and maximum level are set using the AID
Tool. 75% and 100% are the default settings respec-
tively. The VS data input allows a separate PWM signal
to return from the pump giving fault and performance
information. Fault received from the variable speed
pump will be displayed as E16. Modulating Water
Valve - This Variable speed PWM output is provided to
optionally drive a modulating water valve. Through ad-
vanced design a 0-10VDC valve can be driven directly
from the VS pump output. The minimum and maxi-
mum level are set in the same way as the VS pump
using the AID Tool. 75% and 100% are the default set-
tings respectively.
4. Loop Pump Slaving - This input and output are pro-
vided so that two units can be slaved together with a
common flow center. When either unit has a call for
loop pump, both unit’s loop pump relays and variable
speed pumps are energized. The flow center then can
simply be wired to either unit. The output from one
unit should be routed to the input of the other. If daisy
chained up to 16 heat pumps can be wired and slaved
together in this fashion.
Position DIP 4 DIP 5 Description
1 ON ON Cycles with Fan or ECM (or G)
2 OFF ON
Cycles with CC1 first stage of compressor
or compressor spd 1-12
3 ON OFF
Cycles with CC2 second stage of
compressor or compressor spd 7-12
4 OFF OFF Cycles with DH input from ABC board
Aurora Advanced Control Configuration and Options
(Future Availability on Select Models/Configurations)
Controls - UPC DDC Control (optional) cont.