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509 01 3808 00
Specifications are subject to change without notice.
NOTE
: If thru--the--bottom connections accessory is used,
refer to the accessory installation instructions for
information on routing power and control wiring.
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage
and 0.14 amp for second--stage heating, when available.
EconoMi$er X (Factory--Installed Option)
For details on operating RGS units equipped with the
factory--installed EconoMi$er X option, refer to
Factory--Installed Economizers for RGH/RAH/RHH/
RGS/RAS/RHS Rooftop Units, 3 to 27.5 Nominal Tons.
Economizer Supplement Related to California Title 24
.
2--Speed Indoor Fan Motor System with VFD
(Factory--Installed Option)
For details on operating RGH 2 stage cooling units
equipped with the factory--installed 2--Speed Indoor Fan
Motor System with VFD (Variable Frequency Drive)
option, refer to the
Installation, Setup & Instructions
Variable Frequency Drive (VFD)
.
Hot Gas Re--Heat Control Connections
Hot Gas Re--Heat -- Space RH Controller —
NOTE
: Hot Gas Re--Heat dehumidification system is a
factory--installed option which is only available for units
equipped with belt--drive motors.
The Hot Gas Re--Heat dehumidification system requires a
field--supplied and installed space relative humidity
control device. This device may be a separate humidistat
control (contact closes on rise in space RH above control
setpoint) or a combination thermostat--humidistat control
device with isolated contact set for dehumidification
control. The humidistat is normally used in applications
where a temperature control is already provided.
To connect a field--supplied humidistat:
1. Route the humidistat 2--conductor cable (field--supplied)
through the hole provided in the unit corner post.
2. Feed wires through the raceway built into the corner
post (see Fig. 32) to the 24--v barrier located on the
left side of the control box. The raceway provides the
UL--required clearance between high--voltage and
low--voltage wiring.
3. Use wire nuts to connect humidistat cable to two
PINK leads in the low–voltage wiring as shown in
Fig. 33. Refer to the instructions for the field--supplied
humidistat for more information.
To connect a field--installed programmable thermidistat:
1. Route the programmable thermidistat multi--conductor
cable (field--supplied) through the hole provided in the
unit corner post.
2. Feed wires through the raceway build into the corner
post (see Fig. 32) to the 24--v barrier located on the
left side of the control box. The raceway provides the
UL--required clearance between high--voltage and
low--voltage wiring.
3. The programmable thermostat has dry contacts at
terminals D1 and D2 for dehumidification operation
(see Fig. 34). The dry contacts must be wired between
CTB terminal R and the PNK/BLK lead to the LTLO
switch with field--supplied wire nuts. Refer to the
installation instructions included with the programmable
thermidistat device for more information.