Roberts Gorden System Control HP 120 V 1 Installation & Operation Manual page 8

S C I , O
YSTEM ONTROL NSTALLATION PERATION AND
1.4.2 Electrical Installation Materials
120 V, 60 Hz, 1 Ø, 20 A, power supply to the control
panel must be installed in accordance with the most
current National Electrical Code
any site specific diagrams.
Total load powered by the panel must not exceed
20 A. Loads totaling more than 20 A must be
powered from an additional power supply circuit by
the use of a load relay package.
1.4.3 Outside Air Supply Blower
If used, the optional outside air blower is to be con-
trolled in parallel with the pump. The blower incorpo-
rates a pressure switch which must be wired in series
with the pressure switch on the pump. The load relay
package may be required with the blower. See Page
10, Figure 8 for wiring detail.
1.4.4 Pressure Switch
A pressure switch (P/N 90430600K), is required for
installation on the inlet of the pump. This switch is
required to interlock the operation of the pump with
the control panel.
CAUTION
Product Damage Hazard
Pressure switch must be installed on all
ROBERTS GORDON
safety and operation.
System will not operate without pressure
switch.
Failure to follow these instructions can result
in product damage.
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S M
ERVICE ANUAL
, local codes and
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® systems to ensure