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DANGER
Hazardous voltage . Can cause severe injury or
death .
Disconnect electric power before servicing equipment.
More than one disconnect may be required to de-
energize the unit.
WARNING
Provide proper line voltage and phase balance .
Improper line voltage or excessive phase imbalance
constitutes product abuse. It can cause severe damage
to the unit’s electrical components.
WARNING
Electrical shock hazard . Can cause severe injury or
death
.
Connect only low voltage NEC Class II circuits to
terminal block TB2.
DANGER
Overheating or failure of the gas supply to shut off can
cause equipment damage, severe personal injury or
death .
Turn off the manual gas valve to the appliance before
shutting off the electrical supply.
Pre-Construction
The Rebel unit comes equipped with a Microtech III controller
and can be used for sites that are still under construction. The
following conditions must be met.
1 .
Ductwork has to be installed. The fan proving switch
and furnace might not run correctly without the specified
external static pressure
2 . Filters must be installed .
3 .
Follow furnace commissioning instructions found in the
furnace section.
4 .
After substantial completion of the construction process
the unit is to be thoroughly cleaned. Special attention
should be paid to the indoor DX coil and the furnace.
Filters should be changed
5 .
Furnace operation, rate, and temperature rise should be
re-verified. See instructions found in the furnace section.
Lab Pressurization Applications
1 .
Install a “T” fitting with a leak-tight removable cap in each
tube near the sensor fitting. This facilitates connecting a
manometer or pressure gauge if testing is required.
2 .
Use different colored tubing for the controlled space
pressure (high) and reference pressure (low) taps, or tag
the tubes.
3 .
Regardless whether the controlled space is positive or
negative with respect to its reference, locate the high
pressure tap in the controlled space (the setpoint can be
set between -0.2" and 0.2" wc).
4 .
Locate the reference pressure (low) tap in the area
surrounding the controlled space. Not locating the
reference tap to the sensor results in unsatisfactory
operation .
5 .
Locate both taps so they are not influenced by any source
of moving air (velocity pressure). These sources may
include air diffusers or doors between the high and low
pressure areas .
6 .
Route the building tap tube between the curb and the
supply duct and feed it into the unit through the knockout
in the bottom of the control panel.
7 .
Connect the tube to the (high) fitting for sensor SPS2.
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15
IM 1125-7 • REBEL ROOFTOPS
Summary of Contents for Rebel DPS003A
Page 109: ...IM 1125 7 109 Addendum follows...
