Submittal Sheet

ManualsBrandsField Controls ManualsBoiler Venting4" Stainless Steel Vent Riser w/ Power Venter (170,000 BTU)

Page 3

INSTALLATION OF CV-*VR POWER VENTER (See Table 1)

Table 1

UNIT SIZING CHART

OIL GAS

MAXIMUM EQUIVALENT FEET OF

VENT PIPE

MAX*

OIL

GPH

INPUT

MAX**

BTU/HR.

IMPUT

AT MAX BTU/HR

INPUT

AT 60% OF MAX

BTU/HR INPUT

VENTING

WITH

VENT PIPE

SIZE

MODEL

18 83 4"

48 100 5"

100 100 6"

1.10 170,000

100 100 7"

CV-4VR

- 25 4"

32 81 5"

76 100 6"

1.85 290,000

100 100 7"

CV-5VR

*Rating at 100 psi. Sizing based on appliance maximum input rate not actual firing rate. **Do not exceed maximum BTU/HR input rating or maximum oil

GPH input. For multiple venting system applications, add the input for each appliance. Category I gas-fired draft induced systems require a CV-4 or

larger. Category III gas-fired draft induced systems require a CV-5 or larger.

ROCEDURE FOR CALCULATING TOTAL EQUIVALENT PIPE LENGTH IN FEET

1. Calculate the total equivalent feet for each type of fitting used in the venting system from the chart below.

2. Calculate the total amount of feet for the straight lengths of vent pipe.

3. Add the equivalent feet for the fitting with the total amount of feet of straight lengths. This will approximate the total

equivalent feet of the vent system.

Table 2

EQUIVALENT LENGTH (FEET) OF VENT PIPE FOR VENT PIPE FITTING

VENT PIPE DIAMETER

VENT PIPE FITTINGS

3” 4” 5” 6” 7” 8” 9” 10”

TEE

19 25 31 38 44 50 56 63

90° ELBOW

5 7 9 11 12 14 16 18

45° ELBOW

3 4 4 5 6 7 8 9

d/D

1/4 8 11 14 17 19 22 25 28

1/2 5 7 8 10 12 13 15 17

SUDDEN REDUCER

OR INCREASER

FOR 3 *RATIOS (d/D)

3/4 2 3 3 4 4 5 6 6

*Reducer or increaser ratio (d/D) small diameter divided reducer

ratio is d/D = 4/8 = 1/2. To estimate the equivalent foot length for

the fitting, use the smaller pipe diameter for the equivalent length

figure. Example 4" to 8" reducer; the reducer ratio is 1/2 and the

smaller pipe diameter is 4". So, from the chart, the equivalent feet

would be 7 feet. (See Figure 1)

Example: System Pipe Size = 4"

Step 1 Two 4" 90° elbows @ 7 feet each = 14 ft.

Step 2 Ten 2 foot lengths of 4" pipe = 20 ft.

Step 3 Total equivalent feet = 14 ft. + 20 ft. = 34 ft.

Figure 1