“Manufactured in North America”
COMFORT PLUS
Model 3120
with ECM Variable Speed Blower System
Quick Reference Installation Guide
1 |
PLACEMENT AND CLEARANCES |
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Front View |
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Top View |
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WARNING
The area in which the Comfort Plus is installed must remain free of debris and room air should be maintained at less than 85oF.
ABack = zero clearance
BFront = 36 inches (for servicing)
CRight Side = 8 inches (from combustible
material)
D Top = 8 inches (from combustible material)
ELeft Side = 4 inches
FOuter Sides of Return and Supply Ducts = zero clearance
G Bottom = zero clearance
3 |
BRICK LOADING |
Starting at the back of the brick core, load bricks one row at a time using left side, right side, center pattern. Place bricks with grooved side facing up, notch facing forward, and ridges on left and right.
•Remove loose brick debris from brick.
•Brick rows MUST line up front to back
and side to side.
NOTCH IN BRICK
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2 |
SET-UP |
1.Remove heating elements from base of system.
2.Place system in desired location.
3.Adjust leveling legs to prevent rocking.
4.Remove painted front panel of brick storage cabinet.
5.Position element wiring harnesses to avoid damage during brick loading.
6.Remove galvanized front panel.
7.Starting at bottom, lift and drape insulation blankets over top of system.
8.Remove front air channel by pulling out at bottom.
9.Remove the electrical panel cover and locate element screw kit and outdoor sensor.
WARNING
•DO remove the Comfort Plus system from its shipping pallet before installing.
•DO NOT extend leveling legs more than one inch.
•DO use and follow generally accepted safety practices when handling insulation material.
•DO have equipment installed by a qualified technician in compliance with all applicable local, state and national codes and regulations.
•Reference Owner’s and Installer’s Manual for complete safety, installation, and operation instructions.
4 |
HEATING ELEMENT AND AIR CHANNEL INSTALLATION |
WARNING
HAZARDOUS VOLTAGE: Risk of electric shock. Can cause injury or death.
•DO NOT remove electrical panel cover while system is energized.
• Elements MUST be positioned properly to avoid short circuiting them against any surfaces within system.
• Use care when making connections to avoid element damage.
1. Insert heating elements between brick layers until element ends embed into side cutouts of brick cavity. The threaded screw tabs on wire connection terminals should point forward.
2.Install air channel with air deflectors (arrow shaped pieces) facing
inward and narrow ends of deflectors pointing up. Place top of air channel in first.
3. Lower insulation blankets back into position, one at a time. Tuck sides into edges, corners and around exposed portions of heating elements.
4. Install galvanized panel. Slide the top inside the upper lip of top painted panel. Bottom rests on the outside of the brick cavity.
5. Connect wiring harnesses to heating elements using screws in element screw kit. Install screws with heads up and threads pointing down. Tighten screws to 14 in·lbs.
6.Check non-insulated element connections to make sure they do not come within 1/2" of any surface.
7. Install painted front panel.
Element-to-Wiring |
Harness Connections |
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IMPORTANT
5 |
DUCTING |
WARNING
1. |
Assemble factory supplied return air plenum |
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HAZARDOUS VOLTAGE: Risk of electric shock. Can cause injury |
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or death. DO NOT operate the Comfort Plus heating system |
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per the instructions provided with the plenum. |
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without ducting installed to both the air inlet and outlet. |
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2. |
Once assembled, set plenum on right side of |
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the system with air filter and indoor coil access |
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10 18" |
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covers facing forward. Line up predrilled holes |
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16" |
5 3 8" |
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on system with holes in flanges of plenum and |
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attach using screws provided in plenum’s |
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22716" |
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hardware package. |
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1" |
System |
7 |
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1 |
16 |
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NOTE: The 3100 series is factory config- |
27" |
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Top of |
225 |
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ured for a right-to-left airflow. |
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1" 8 2" |
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16 16" |
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3. |
Insert air filter into filter rack. |
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7 |
1 |
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53 5 8" |
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4. |
Connect return air duct to top of plenum. |
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1 8" |
26 8" |
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5. |
Connect supply air duct in structure directly to |
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system’s air outlet. |
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6.If necessary, adjust supply air blower speed by
using the chart below. |
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7. The W/E jumper MUST be in the ON position or |
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the blower will not operate with an E call from |
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the thermostat. |
• |
When interfacing with a heat pump, the A-Coil MUST |
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Jumper |
Speed CFM |
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be placed on the return air side. |
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A |
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• To maintain a room temperature of 85oF or less in the |
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1000 |
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mechanical room, a 24" x 24" opening can be in- |
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B |
1200 |
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C |
1400 |
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stalled in the area or a 6" x 6" non-closing register |
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D |
1600 |
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can be cut into the return air duct. Refer to Place- |
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ment and Clearance Requirements section of |
External static pressure should not exceed .75 inches water column. |
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Owner’s and Installer’s Manual for more information. |
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