Installation guide

Figure 10
Observer Communicating Wall Control
Four-Wire Connection Diagram
Observer Communicating
Communicating Variable Speed
Wall Control Furnace/Fan Coil
.r_]-
Green
Yellow
White
Red
i Remote
Opti°na/ensorRoom ._"
Humidifier_
Connection k,.-
--O
HUM
--O
COM
Two-Stage
Heat Pumr
_Gr_e_en_F_
Yellow F_
NOTE: Wiring must conform to NEC or local codes.
NOTE: For standard thermidistat or thermostat wiring, see
Installation Instructions for those products.
FVM Fan Coil Wiring With
Figure 11
Two-Stage Heat Pump
Indoor Control
RVS Cooling
Heat/Cool --
Stage 1
Heat Stage 3 rw_,
Heat/Cool
Stage21 "'--I
Fan
24 VAC Hot
Dehumidify ['D"_'_.
24 VAC Comm
Humidify
RVS Heatingr__
Outdoor t_---- }
Fan Coil Two-Stage Heat Pump
:::@
Remove J2 J_
,_______ For Heat Stag_
--CI-D
Humidifier
/ (24VAC) /
Outdoor I/3,
--- "_ Sensor [--" q
Figure 12
Variable Speed Furnace with
Two-Stage Heat Pump (Dual Fuel)
Variable Speed Two-Stage
ICP Thermostat Furnace Heat Pump
........ r-_
D HUM
OUTDOOR
SENSOR
Non-Communicating Indoor Unit with
Figure 13 Observer Communicating Wall Control
Wall
Control
Non-Communicating
Indoor
Note: This installation requires the daugh-
ter board accessory, NAXAO0101DB.
Note: This installation does not allow for
communicating feature functionality.
NAXA00101DB
Green
Red
White {_
Yellow
{_. - -
(2Z3
OAT
Check Charge
Two-stage equipment must be
compressor operation only.
Communicating
Outdoor
OAT
Sensor
charged in high-stage
Factory charge amount and desired subcooling are shown
on unit rating plate. Charging method is shown on information
plate inside unit. To properly check or adjust charge,
conditions must be favorable for subcooling charging.
Favorable conditions exist when the outdoor temperature is
between 70°F and 100°F (21.11°C and 37.78°C), and the
indoor temperature is between 70°F and 80°F (21.11 °C and
26.67°C). Follow the procedure below:
8 Specifications subject to change without notice. 428 01 1703 02