Pace PAI, Installation And Assembly Manual

Page: 84 / 108

SECTION 3 - HANDLING, STORAGE, AND INSTALLATION PACE │ Installation & Assembly Manual
Issue Date: 07/03/2018
84
Form PA102.20-N1
10. If the heater is wired to a heating/cooling thermo-
stat, use a thermostat with isolating circuits to pre-
vent possible interconnection of Class 2 outputs.
11. If the heating elements are divided into several
sections with resistance wire between two or
more sections, calculate the maximum kW per sq.
ft as follows:
Number of heated
sections x area of
one heated section
Heater nameplate KW
ELECTRIC HUMIDIFIER
It's the installer's responsibility to wire this device be-
cause this device is not included in the single point
power option.
Figure 139 on page 84 represents a typical electric
humidifier panel layout. The supply power knockout is
located in the bottom of the electrical panel as shown
in Figure 140 on page 84 . All conduits beginning or
ending on the inside of the pressurized or conditioned
areas (i.e. AHU) must have the conduit openings
sealed to prevent air from passing through it.
Figure 139 - Layout of Typical Humidifier Panel
LD11726
Figure 140 - Supply Power Knockouts
LD11727
KNOCKOUTS
All AHU penetrations must be sealed to prevent air and
water leakage. Refer to Field Penetrations for Piping
and Electrical Connections on page 85 .
Field provided disconnects must provide circuit protec-
tion according to the humidifier nameplate. All field wir-
ing to the humidifier must be in accordance with NEC
and local codes.
HUMIDIFIER
Control wiring diagrams are located in the humidifier
manufacturer's operator's manual, which can be found
inside the control panel or it is attached. Factory pack-
age control drawings may not include humidifier points
as shown in
Figure 141 on page 84
.
Figure 141 - Humidifier Points
LD11725
If the humidifier operator's manual cannot be located
inside the humidifier, call PACE Airside Product Techni-
cal Support to get a copy of the electronic version.