Roth AHTR Series, Installation & Operation Manual

Page: 4 / 14

4 Roth AHTR Series Elec Heat IOM, August 2010
AHTR Series Elec Heat IOM, August 2010 AHTR Series Elec Heat IOM, August 2010
Section 4: Installation
INSTALLATION
This instruction covers the physical installation
of the AHTR Series electric heat kits when
installed with the RXT Series Geothermal Heat
Pump Unit.
The electric heat accessories are used for
applications of heat pump with electric
heat. Each of the air handler unit models are
approved for use with specific electric heat
accessories. The installation instructions list the
possible combinations and other important
electrical data and limitations.
1. Shut OFF electrical power at unit disconnect
switch or service panel.
2. Remove the upper front panel from unit
and locate filler plate. Remove the (4) sheet
metal screws from plate. (See Figure 1)
RIGHT HAND AIRFLOW AND LEFT HAND
DOWNFLOW APPLICATION
3. If unit is going to be used for right hand
return or left hand return downflow (airflow)
the circuit breakers will have to be removed
and rotated 180 degrees, so the OFF position
will be DOWN when the cabinet is positioned
on the right side. This is an NEC requirement.
DO ONE BREAKER AT A TIME to make sure
wires are reconnected properly. Loosen
terminal screws on the wires. Gently pull wires
back from breaker. Remove screws securing
the breaker and rotate 180 degrees, then
reconnect the wires to breaker. Proper
torque for terminal screws is 35 inch pounds.
4. Insert the heater into the cabinet opening as
shown in Figure 1, so the heater support rod
goes into the hole in the back of the plenum.
Exercise caution to prevent damage to
heater element.
5. Secure the electric heat accessory with
four screws.
⚠
CAUTION
⚠
CUT HAZARD
FAILURE TO FOLLOW THIS CAUTION
MAy RESULT IN PERSONAL INjURy.
SHEET METAL PARTS MAy HAVE SHARP
EDGES OR bURRS. USE CARE AND
WEAR PROTECTIVE CLOTHING AND
GLOVES WHEN HANDLING PARTS.
⚠
WARNING
⚠
ELECTRICAL SHOCK HAZARD
FAILURE TO FOLLOW THIS WARNING
COULD RESULT IN PERSONAL INjURy
OR DEATH.
bEFORE INSTALLING, MODIFyING, OR
SERVICING SySTEM, MAIN ELECTRICAL
DISCONNECT SWITCH MUST bE IN THE
OFF POSITION.
THERE MAy bE MORE THAN ONE
DISCONNECT SWITCH. LOCK OUT
AND TAG SWITCH WITH SUITAbLE
WARNING LAbEL.
Figure 1: Heater Installation
Representative drawing only, some models may vary in appearance.
Heater Support Rod Fits into Hole
Rotate Circuit
Breakers 180
Degrees for RH and
LH DN Airflow