MOUNTING

Mounting Procedure — DHIF

Double

 

 

 

(Flanged heaters with control box)

 

 

 

1. At heater location, cut out a section of duct, or a new con-

Lip

Self-Adhesive Gasket

3/4"

struction lay out duct work to accommodate dimensions of

Supplied with Heater and

 

Installed by Customer

heater.

3/4"

Duct

 

2. Form mounting flanges on cut edges of duct as shown in

 

 

 

 

 

Figure 17. Omit flange in side when terminal box overhangs.

 

 

 

D

3. Position heater in duct and attach duct lip to heater flanges with

 

 

 

 

 

 

 

sheet metal screws.

Control

 

 

 

4. Attach control box to duct with sheet metal screws through the

 

 

W

mounting holes provided inside the control box.

Box

 

 

 

Sheet Metal

 

 

 

NOTE: Where necessary, make provision to support weight of

 

 

Sheet Metal

Screws

H

H

heater. Any part of heater flange may be drilled for attaching hang-

 

 

Screws

er straps or duct.

 

 

 

 

5. Where necessary, joint between duct and heater flange may be

Mounting

 

 

 

sealed with silicone gaskets or silicone sealant.

W

 

 

 

Holes

 

 

 

 

Figure 17

 

 

Mounting Procedure DHII

3/4"

 

Self-Adhesive Gasket

(Insert heaters with control box)

 

Double

Supplied with Heater and

1. Measure dimension “H” of duct heater (Figure 1) and mark the

 

Installed by Customer

 

Lip

duct with an outline for a rectangular hole with dimensions of

 

 

Duct

 

D-11/2”. The D-11/2 dimension is to be parallel to the direction

 

 

 

of air flow.

 

 

 

 

2. Increase D-11/2 slot to D by forming a 3/4” double lip on both

 

 

 

D

sides of the duct opening. (See Figure 18).

 

 

 

Control

 

 

W

3. Slide heater into duct.

 

 

4. Attach control box to duct with sheet metal screws through the

Box

 

 

 

Sheet Metal

 

 

 

mounting holes provided inside the control box and through

 

 

 

Screws

 

 

H

the brackets on the top and bottom of heater.

 

 

 

H

5. Where necessary, make provision to support weight of heater

 

 

 

 

and terminal box.

Mounting

 

 

 

 

 

W

 

 

Holes

 

 

 

 

Figure 18

 

 

Mounting Procedure — DHRF

 

Self-Adhesive Gasket

(Flanged heaters with compact terminal box)

 

Supplied with Heater and

 

Installed by Customer

1.At heater location, cut out a section of duct, or on new con-

struction lay out duct work to accommodate dimensions of

 

D

heater.

Double

 

2. Form mounting flanges on cut edges of duct as shown in

Lip

3/4"

 

Figure 19.

 

W

3. Position heater in duct and attach duct lip to heater flanges with

 

sheet metal screws.

 

3/4"

NOTE: Where necessary, make provision to support weight of

 

 

 

heater. Any part of heater flange may be drilled for attaching hang-

 

H

er straps or duct.

 

4. Attach control box to duct with sheet metal screws through the

 

Duct

mounting holes provided inside the control box.

 

 

 

5.Where necessary, joint between duct and heater flange may be sealed with silicone gasket or sealant.

 

 

 

 

 

Figure 19

Mounting Procedure — DHRI

 

 

 

 

 

Self-Adhesive Gasket

(Insert heaters with compact terminal box)

 

Double

 

 

Supplied with Heater and

 

 

 

Installed by Customer

1.

Measure dimension “H” of duct heater (Figure 2) and mark the

 

Lip

 

 

 

 

 

 

 

 

 

 

 

 

duct with an outline for a rectangular hole with dimensions of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D-11/2 x “H”. The D-11/2 dimension is to be parallel to the

3/4"

 

 

 

 

 

 

direction of air flow.

 

 

 

 

W

2.

Increase D-11/2 slot to “D” by forming a 3/4” double lip on each

 

 

 

 

 

 

 

side of the duct. (See Figure 19).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Slide heater into duct.

 

 

 

 

 

 

 

4.

Attach control box to duct with sheet metal screws through the

 

 

 

 

 

H

 

mounting holes provided inside the control box and through

 

Duct

 

 

 

 

 

 

 

 

 

the brackets on the top and bottom of heater.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Where necessary, make provision to support weight of heater.

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 20

 

 

-5-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 5
Image 5
Chromalox PF455-3 manual Mounting Procedure Dhif

PF455-3 specifications

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