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Gentherm HC-321 Assembly Instructions Manual

Made by: Gentherm
Type: Assembly Instructions
Category: Indoor Furnishing
Pages: 16
Size: 2.26 MB

 

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Heat / Cool Executive Chair

Assembly Instructions

Model:  HC-321

 


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Casters

Quantity: 5

Seat Cushion

Quantity: 1

Star Base

Quantity: 1

Gas Lift with Telescoping Cover

Quantity: 1

Seat Plate

Quantity: 1

2

Back Cushion

Quantity: 1

D

D2

D1

G

F

C

B

A

Parts

1” Big Screws

Quantity: 2

1-3/4” Big Screws

Quantity: 2

1-1/4” Small Screws

Quantity: 6

Plastic Caps

Quantity: 2

E1

E2

Left Arm

Quantity: 1

Right Arm

Quantity: 1

H

I

J

1-1/2” Small Screws

Quantity: 2

K

N

L1

Allen Key 

Quantity: 1

Battery 

Quantity: 1

Charging Stand

Quantity: 1

Battery Charger

Quantity: 1

O

P

Q

Arm Insert

Quantity: 1

L2

M1

M2

Arm Insert 

Quantity: 1

Arm Insert 

Quantity: 1

Arm Insert 

Quantity: 1

R

 


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Chair Assembly Instructions
Carefully unpack all parts and identify them against the parts list before attempting to assemble. To avoid scratching the components, 
assemble the chair on a protected surface.
Note: The casters sold with this chair are intended for use on carpet and not recommended for use on tile or hard wood floors. Using these 
casters on tile or wood flooring may cause floor surface damage, so please consider purchasing a chairmat to protect your floor surfaces.
We are here to help if you have any questions, comments, or are in need of warranty replacement parts.

Visit us online: www.gentherm.com/officechair
Call us toll free at: 844-4MY-TEMP 
(Monday - Friday, 8AM -5PM EST)

This chair has been tested and approved for normal use which is defined as a standard work week of forty hours by a person weighing 
less than 400lbs. 

3

 

 


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4

Step 1

Place the Star Base (B) upside down and insert 

5 Casters (A) into the holes on the Star Base (B).

Step 2

Turn the Star Base (B) over and insert the 

Gas Lift with Telescoping Cover (C) 

through the center hole on top of Star 

B

A

B

C

 


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5

Step 3

Attach Seat Plate (D) to the bottom of the Seat Cushion 

(F) (with the front of the seat plate facing the front of 

seat cushion). Attach by using 1-3/4” Big Screws (I) for 

the front holes of the Seat Plate (D) and 1” Big Screws 

(H) for the rear holes of the Seat Plate (D) with the Allen 

Key (O).

*Note: Align the Seat Plate so the FRONT on the seat 

plate matches the FRONT label on the bottom of the 

seat cushion. Tighten the screws completely.

D

F

H

I

O

 


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6

Insert

Push

Assemble the lever

Disassemble the lever

Step 4

Insert Levers (D1 & D2) of Seat Plate (D) to the 

pre-attached cable lever receivers on the 

underside of Seat Cushion (F). Push down the 

key on the receivers to pull out the levers. 

*Note: Fix the cable for the seat plate into the 

plastic clips attached to the bottom of the seat 

cushion.

D2

D1

F

D

 


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7

C

D

F

Step 5

Place the assembled Seat Cushion (F) with Seat 

Plate (D) on top of the Gas Lift with Telescoping 

Cover (C) and press down until fully engaged. 

Step 6

Fasten the Arms (E1 & E2) onto sides of the 

Seat Cushion (F) by using 1-1/4” Small Screws 

(J) with the Allen Key (O).

*Note: Do not tighten the screws completely.

E1

E2

O

J

J

F

 


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8

Step 7

Place the Back Cushion (G) flat between Arms (E1 & E2), 

and use 1-1/4” Small Screws (J) to locate lower screw 

holes on both Arms (E1 & E2) & Back Cushion (G) with 

the Allen Key (O) .

*Note: Do not tighten the screws completely.

Step 8

Push the Back Cushion (G) up to a vertical 

position and attach the Arms (E1 & E2) by 

using 1-1/2” Small Screws (K) with the Allen 

Key (O) .

*Note: Tighten all the screws completely.

O

O

J

K

G

G

E1

E1

E2

E2

 


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9

Step 9

Connect the wires between Seat Cushion (F) 

and Back Cushion (G).

F

G

Step 10

Press the Plastic Caps (N) into armrest holes to 

cover screws and place the Arm Inserts (L1 & 

L2 & M1 & M2) into arm grooves once all 

screws have been tightened.

N

N

L1

L2

M1

M2

 


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10

Step 11

Insert the Battery (P) to the Seat Cushion (F) correctly.

Insert battery with product description label facing down and charging 
port towards chair.

Note: Chair must be occupied for the heat/cool function to operate.

This feature extends battery life.

Battery Installation

Occupant Detection

F

P

 


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11

Step 12

If the power of the battery is depleted, please connect 

to the electrical outlet as shown.

P

Q

R

Battery Charging Procedure

 


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Operating Instructions

Function Instruction - 1

To Adjust Seat Height:
While seated, lean forward and reach under the right side of the 
chair to find the lever. Lift the lever and raise your body up slightly to 
allow the chair to rise to the desired height. Once desired height is 
reached, release lever to lock chair at desired height. To lower the 
seat, lift the lever while seated. The chair will descend until the lever 
is released or the chair reaches the bottom position.

12

 


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13

Function Instruction - 2

To Operate Tilt Lockout:
While seated, reach under the left side of the chair to find the 
lever. Push down the lever and lean back to allow the chair to tilt 
backwards. To lock the chair in the upright or vertical position, sit 
upright and pull the lever to the up position. 
 

 


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14

Function Instruction - 3

To Adjust Tension On The Tilt: 

Reach under the front center of the chair, grasp the round 

knob (T) and turn it counter - clockwise to stiffen the tilt 

mechanism for a heavier user. Turn the knob (T) clockwise 

to loosen the tilt mechanism for a lighter user. Rotate the 

knob (T) until the desired resistance is reached.

T

 


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15

Function Instruction - 4

Heating and Cooling Functions:

H

L

Chair Heating Operation

Chair Cooling Operation

Press      for heating.
Select the desired heating level by pressing       for HIGH, or      for LOW
Switch will illuminate RED.

Press      for cooling.
Select the desired cooling lever by pressing       for HIGH, or       for LOW.
Switch will illuminate BLUE.

 


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16

PLEASE READ THE FOLLOWING INFORMATION CAREFULLY BEFORE USING THIS PRODUCT. 
PLEASE SAVE THESE INSTRUCTIONS.

As with all electrical products, the misuse of this product or failure to properly follow the instructions may cause 
overheating, fire or personal injury.

1. Use only an approved battery (p/n LX-DRF07H), battery charger (p/n LX-126-1000) and stand. Do not use with an extension cord.
2. Fully charge battery before first use, charging time is approximately 5-6 hours.
3. Do not use the Battery Charging Stand with damaged cords. Do not remove, trap, fold, cross or pinch any wires or cords.
4. The Battery Charger and Charging Stand should be placed on a dry, firm surface, in a well-ventilated place, free from surrounding fabric. 
Clearance of at least one (1) foot should be left on all sides. Do not cover the Battery Charger or Charging Stand.
5. Do not  use the heat feature of this appliance with an infant, a child, an incapacitated person, a paraplegic, a quadriplegic, or if you are 
insensitive to heat or cool. Keep all pets away from the main contral unit and wiring. This appliance is not intended for use by persons 
(including children) with reduced physical, sensory or mental capacities, or lack of experience and knowledge, unless they have been given 
supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that 
they do not play with the appliance.

IMPORTANT SAFETY INSTRUCTIONS:
DANGER 
- To reduce the risk of electric shock:
   - Always unplug the Battery Charger and Charging Stand from the electrical outlet before cleaning.
   - Keep the cord away from the heated surfaces.
   - Do not use outdoors.