2
Figure 2
Model GB& GB-QR Dry Sidewall Extended
Figure 1
Model GB & GB-QR Dry Sidewall
Flush & Recessed
Figure 3
Model GB& GB-QR Dry Sidewall Slatted Walls
Caution: See step one of installation sequence for appropriate fitting requirements.
Ordering Length for Dry Pendent Heads
Flush
— The “A” dimension is measured from the face of the tee to the finished wall. This is only approximately flush. Order to the nearest
1
⁄
4
"
(6.4 mm). Minimum “A” dimension is 2" (50.8 mm).
Slatted
— The “A” dimension is measured from the face of the branchline tee to the face of the finished slatted wall. Minimum “A” dimension is
1
1
⁄
2
" (38.1 mm). The adjustment is +
1
⁄
2
" (12.7 mm).
Recessed
— The “A” dimension is measured from the face of the tee to the finished wall. Minimum “A” dimension is 2
1
⁄
8
" (54.0 mm). Adjust-
ment is
±
3
⁄
16
" (4.8 mm).
Extended
— The “A” dimension is measured from the face of the tee to the finished wall. Follow one of these two options:
If the “A” dimension is less than or equal to 3
1
⁄
4
" (82.6 mm), total adjustment is 1
1
⁄
2
" (38.1 mm) (from the mid point of the adjustment range
±
3
⁄
4
"
(19.1 mm)). Order to the nearest
1
⁄
4
" (6.4 mm). Minimum “A” dimension is 0".
If the “A” dimension is greater than 3
1
⁄
4
" (82.6 mm), the total adjustment is 3" (76.2 mm) (from the mid point of the adjustment range
±
1
1
⁄
2
" (38.1 mm)).
Order to the nearest
1
⁄
4
" (6.4 mm). Minimum “A” dimension is 3
1
⁄
4
" (82.6 mm).
K-Factor Table
Length
K-Factor (metric)
2
1
⁄
2
" (63.5 mm) to less than 10
1
⁄
8
" (254.1 mm)
5.3 (76.4)
10
1
⁄
8
" (254.1 mm) to less than 17
5
⁄
8
" (447.7 mm)
5.2 (75.0)
17
5
⁄
8
" (447.7 mm) to less than 25
1
⁄
4
" (641.4 mm)
5.1 (73.5)
25
1
⁄
4
" (641.4 mm) to less than 32
3
⁄
4
" (831.9 mm)
5.0 (72.1)
32
3
⁄
4
" (831.9 mm) to less than 40
3
⁄
8
" (1025.5 mm)
4.9 (70.7)
40
3
⁄
8
" (1025.5 mm) to less than 48" (1219.2 mm)
4.8 (69.2)
Dry Pendent Design Guidelines
To determine the K-factor, follow these steps:
1. Determine the K-factor length (NOT The “A” DIMENSION). The
K-factor is determined as follows:
Slatted - “A” dim1
3
⁄
8
" (34.9 mm) = length for K-factor.
Flush - “A” dim
7
⁄
8
" (22.2 mm) = length for K-factor.
Recessed - “A” dim
3
⁄
8
" (9.5 mm) = length for K-factor.
Extended - “A” dim3
1
⁄
2
" (88.9 mm) = length for K-factor.
2. Determine the K-factor for that length by using the K-factor table.
3. Use the K-Factor at the tee in the branchline for your calculations.
1" (25 mm)
Thread
“A”
Dimension
(order length)
Main
Tube
Finished Wall
LIne
2 1/2" (63.5 mm)
±
1/8" (3.8 mm)
Ceiling Opening
1 15/16" (49.2 mm)
Inner Cup Dia.
If A is > 3 1/4" (82.6 mm)
Dimension is 4 5/8" (117.5 mm)
(
±
1 1/2" (38.1 mm))
If A is
≤
3 1/4" (82.6 mm)
Dimension is 3 7/8" (98.4 mm)
(
±
3/4" (19.1 mm))
Finished Wall
LIne
1" (25 mm)
Thread
Main Tube
“A”
Dimension
(order length)
2 1/2" (63.5 mm)
±
1/8" (3.8 mm)
Ceiling Opening
1 15/16"
(49.2 mm)
Inner Cup Dia.
Flush
1 7/8" (47.6 mm)
Recessed
1 1/2" (38.1 mm)
Finished Wall
LIne
1" (25 mm)
Thread
Main Tube
“A”
Dimension
(order length)
2 1/2" (63.5 mm)
±
1/8" (3.8 mm)
Ceiling Opening
1 15/16"
(49.2 mm)
Inner Cup Dia.
2 1/2" (
±
1/2")
OBSOLETE
