Giant UGC120S-100, Инструкция по установке и обслуживанию

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GI-IM048En-1013
E. EXHAUST VENT AND INTAKE PIPE SIZING
1. The exhaust vent and intake pipe size is 2" (5 cm) for the PH100 and PH130 and 3" (7.6 cm) for the PH160 and PH199.
2. The maximum total equivalent length of 2” (5 cm) exhaust vent and intake pipe must not exceed 85 feet (26 m) . The total maximum
equivalent length of 3” (7.6 cm) exhaust vent and intake pipe must not exceed 200 feet (61 m) .
a. The equivalent length of elbows, tees, and other fittings are listed in the Friction Loss Table, Table 5:
FRICTION LOSS EQUIVALENT IN PIPING AND FITTINGS
FITTINGS OR PIPING
EQUIVALENT FEET
2” (5 cm) 3” (7.6 cm) 4” (10 cm)
90 DEGREE ELBOW* 5’ (1.5 m) 5’ (1.5 m) 3’ (91 cm)
45 DEGREE ELBOW 3’ (91 cm) 3’ (91 cm) 1’ (30 cm)
COUPLING 0’ 0’ 0’
AIR INLET TEE 0’ 0’ 0’
STRAIGHT PIPE 1’ (30 cm) 1’ (30 cm) 1’ (30 cm)
CONCENTRIC VENT KIT 3’ (91 cm) 3’ (91 cm) N/A
V500 2” (5 cm) VENT KIT 1’ (30 cm) N/A N/A
V1000 3” (7.6 cm) VENT KIT N/A 1’ (30 cm) 1’ (30 cm)
V2000 4” (10 cm) VENT KIT N/A 1’ (30 cm) 1’ (30 cm)
Table 5 - *Friction loss for long radius elbow is one (1) foot (30 cm) less.
NOTE: Consult Polypropylene venting
instructions for friction loss and pressure drop equivalents.
b. For example: If the exhaust vent has two (2) 90° elbows and ten (10) feet (3 m) of PVC pipe we will calculate:
Exhaust Vent Equivalent Length = (2x5) + 10 = 20 feet (6 m).
Further, if the intake pipe has two (2) 90° elbows, one (1) 45° elbow and ten (10) feet (3 m) of PVC pipe, the following
calculation applies:
Intake Pipe Equivalent Length = (2x5) + 3 + 10 = 23 feet (7 m).
Finally, if a concentric vent kit is used we find:
Total Equivalent Length = 20 + 23 + 3 = 46 feet (14 m).
The total equivalent length is 46 feet (14 m) which is well below the maximum of 85 feet (26 m).
3. The minimum total equivalent length is 16 equivalent feet (5 m).
Failure to provide a minimum total vent length of 16 equivalent feet (5 m) could result in property damage and improper product
operation.
F. LONGER VENT RUNS
The maximum total equivalent length can be extended by increasing the diameter of both exhaust vent and intake pipe equally.
However, the transitions should begin a minimum of 15 total equivalent feet (4.6 m) from the water heater.
a. The maximum total equivalent length for increased diameter vent pipes is 125 feet (38 m) for 2” (5 cm) transitioning
to 3” (7.6 cm) pipe (this number includes the minimum 15 total equivalent feet (4.6 m) necessary for transition), and
200 maximum total equivalent feet (61 m) for 3” (7.6 cm) transitioning to 4” (10 cm) pipe (including the minimum 15
total equivalent feet (4.6 m) necessary for transition).
b. Transitions should always be made in vertical sections of pipe to prevent the condensate from pooling in the vent pipe.
MODEL
MAXIMUM TOTAL EQUIVALENT LENGTH AT
STANDARD VENT CONNECTION
REDUCING
COUPLING MAXIMUM TOTAL EQUIVALENT LENGTH AT
MAXIMUM INCREASED VENT SIZE
PH100
PH130
85’ (26 m) @ 2” (5 cm)
3” (7.6 cm) X
2” (5 cm)
125’ (38 m) at 3” (7.6 cm)
PH160
PH199
200’ (61 m) @ 3” (7.6 cm)
4” (10 cm) X
3” (7.6 cm)
200’ (61 m) at 4” (10 cm)
Table 6: Vent Sizing – Diameter and Length
c. If the transition occurs at a distance greater than 15 equivalent feet (4.6 m) from the water appliance, the maximum
equivalent length will be reduced.
Total maximum equivalent length of increased diameter exhaust vent and intake pipe must not exceed the lengths defined in this
manual. 125 maximum total equivalent feet (38 m) for 2” (5 cm) increased to 3” (7.6 cm) diameter vent pipe; 200 maximum total
equivalent feet (61 m) for 3” (7.6 cm) increased to 4” (10 cm) diameter vent pipe. Failure to keep the total equivalent length below the
maximum lengths determined in this manual will result in faulty appliance operation, substantial property damage, serious personal
injury, or death.