Univex ProMax SL Direct-Vent, Residential Gas Water Heaters, AOSRG46400, Dimensions In Inches

Residential Gas Water Heaters

SL

DIRECT-VENT

FIRST

BTU

RECOVERY

DIMENSIONS IN INCHES

VENT

APPROX.

MODEL

HOUR

ENERGY

GAL.

INPUT

90ºF RISE

SHIPPING

NUMBER

RATING

FACTOR

CAP.

PER

GALLONS

A

B

C

D

E

F

G

H

OUT-

WEIGHT

LET*

GALLONS

HOUR

PER HOUR

(LBS)

GDV-40L

73

.62

40

38,000

41

68

54-3/4

22-1/4

16

12-1/4

45-1/4

16-1/2

41-3/4

Co-Axial

167

GDVT-50L

88

.59

50

50,000

55

76

64-3/4

22-1/4

16-1/4

12-1/2

55-1/2

16-1/2

53-3/4

Co-Axial

187

GDV-75L

131

.59

75

55,000

60

76

65-3/4

26-1/4

16-1/4

12-1/2

55-1/2

17-1/4

54

Co-Axial

310

Recovery capacities based on actual performance tests.

*Dual-channel system has 3˝ vent pipe inside 6˝ air intake pipe, for the 40 & 50 gallon models. The 75-gallon model uses a 4”x 7” co-axial pipe.

All models have 2” foam cavity.

Water connection 3/4” male all models.

All models are certified for sale in Canada (add SMR “T25”). 75 gallon water connections are 12” on center.

Important! Vent Installation and Termination Requirements

nMaximum horizontal vent distance is 80” to outside of exterior wall.

40 & 50 gal.

25-1/4

25-1/4

75gal.

29-1/2

T&P

DRA IN

OUTLET

INLET

nMinimum horizontal vent distance is 17” to outside of exterior wall.

nVent pipes may be trimmed (cut) for short vent installations.

nFor vent installation less than 30” the vent restrictor is required. Place restrictor over the flue outlet on heater before installing the outlet vent pipe to the heater.

42°

47°

55°

69°

TOP

nRecommended installation height for the heater vent pipe should be 68” for 40 gallon models and 76” for the 50-gallon and 75-gallon models (vent height).

n Offset Vent Arrangement		MIN VENT
		17
1. When replacing an existing direct vent model, the new vent pipe		MAX VENT
		80
may drop from the minimum vent height as much as 7 1/4” to exit
through the existing vent opening in the exterior wall.
2. Vent may have one horizontal 90 degree turn before exiting through		6” DIA. on 40 & 50 Gallon Models
exterior wall (Do not combine both offset vent arrangements in one		7” DIA. on6 75DIAGallon. Models
installation) (See examples in the installation manual)
n High Rise Vent Arrangement
3. When vent termination is more than 80” above
the base of the heater. The horizontal vent run must
be a minimum of 22” from the center of the heater to
the outside exterior wall surface. (See example in the
installation manual)
n Vent termination clearance hole through the exterior
wall should be approximately 7” diameter.
n Snow accumulation and drifting should be considered		C
when locating the termination.
n An optional wire grill vent cap protector is available	A	SIDE
	B
through the parts department, part number 9006627.		TAPS
n See the installation manual for complete		F
		H
installation and venting requirements.
	D	G
		E

75 gal vent termination cap is not interchangeable with vent cap on 40 & 50 gal models

EXTERIOR

WALL

FRONT

For Technical Information and Automated Fax Service, call 800-527-1953. A.O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

Revised April 2008	Page 2 of 2
www.hotwater.com	AOSRG46400