Product Overview
NATURAL GAS AND LIQUID PROPANE MODELS
TTW
®
High Performance Energy Saver Models
Meet or exceed ASHRAE 90.1b (current standard) C.E.C. Listed
82% Thermal Efficiency
Model
Number
Approx.
Shipping
Weight
lbs.
E
Floor to
Gas
Conn.
in.
A
Floor to
Flue
Conn
in.
C
Vent
Size
in.
B
Jacket
Dia.
in.
Capacity Recovery at
90°F Rise*
GX-2-TW-25S6BN
GX-1-TW-55S6BN
U.S.
Gal.
25
55
Imp.
Gal.
21
46
Nat.
BTU/Hr.
Input
76,000
78,000
Nat.
U.S.
GPH
82
84
Nat.
Imp.
GPH
68
70
LP
U.S.
GPH
82
84
LP
Imp.
GPH
68
70
62
5
/
8
63
3
/
4
3
3
170
215
18
22
11
1
/
2
11
1
/
2
F
Floor to
Space
Heating
Return
in.
13
3
/
8
13
3
/
8
48
48
D
Floor to
T&P
Conn.
in.
Model
Number
Approx.
Shipping
Weight
kg.
E
Floor to
Gas
Conn.
mm.
A
Floor to
Flue
Conn
mm.
C
Vent
Size
mm.
B
Jacket
Dia.
mm.
Capacity Recovery at
50°C Rise*
GX-2-TW-25S6BN
GX-1-TW-55S6BN
Liters
94
208
Nat.
kW
Input
22.3
22.9
LP
BTU/Hr.
Input
76,000
78,000
LP
kW
Input
22.3
22.9
Nat.
Liters/
Hour
310
317
LP
Liters/
Hour
310
317
1575
1660
76
76
77
97
457
559
279
279
F
Floor to
Space
Heating
Return
mm.
330
330
G
Floor to
Space
Heating
Outlet
in.
48
48
G
Floor to
Space
Heating
Outlet
mm.
1219
1219
H
Floor to
Heater
Top
in.
52
7
/
8
54
H
Floor to
Heater
Top
mm.
1343
1372
J
Floor to
Water
Conn.†
in.
56
7
/
8
58
J
Floor to
Water
Conn.†
mm.
1444
1473
K
Depth
in.
25
3
/
8
27
3
/
8
K
Depth
mm.
644
695
1219
1219
D
Floor to
T&P
Conn.
mm.
Residential Power Vent Gas Water Heater
General
All gas water heaters are certified at 300 PSI test pressure (2068 kPa) and 150 PSI working pressure (1034 kPa). All water connections are 3⁄4" NPT (19mm)
on 8" (203mm) centers. All gas connections are 1/2" (13mm).
All models design certified by CSA International (formerly AGA/CGA), ANSI standard Z-21.10.3 and peak performance rated.
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Suitable for Water (Potable) Heating and Space Heating.
Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into this system. This unit may NEVER be connected to any existing
heating system or component(s) previously used with a non-potable water heating appliance.
E
F
H D & GJ
A
C
X
Z
Y
Model
Number
X
Distance
Between
Centers
in.
Z
Height
to
Center
of Pipe
in.
Y
Depth of
Mixing
Device
in.
GX-2-TW-25S6BN
GX-1-TW-55S6BN
8
8
6
6
2
1
/
2
2
1
/
2
Propane models feature a Titanium Stabilized Stainless Steel propane burner.
For propane (LP) models, change suffix"BN" to "SX".
*Based on manufacturers rated recovery efficiency.
†Dimension to top of installed mixing device.
110 V.A.C. Required for Power Venting / 110 V.A.C., 60HZ, 3.1 Amperes
Integrated Mixing Device
(Installation required for operation)
Printed in U.S.A.
119-B-0612-A
©2012, Bradford White Corporation. All rights reserved.
Ambler, PA
For U.S. and Canada field service, contact your professional installer or local Bradford White sales representative.
Sales 800-523-2931
●
Fax 215-641-1670 / Technical Support 800-334-3393
●
Fax 269-795-1089
●
Warranty 800-531-2111
●
Fax 269-795-1089
International: Telephone 215-641-9400
●
Telefax 215-641-9750 / www.bradfordwhite.com
Sales / Technical Support 866-690-0961 / 905-238-0100
●
Fax 905-238-0105 / www.bradfordwhite.com
K
B
Subtract 5ft. for each additional 90° elbow.
†For high altitude installations, consult the
installation instructions.
3"
Vent Pipe
4"
Vent Pipe
GX-2-TW-25S6BN
GX-1-TW-55S6BN
†
60 ft.
7 ft.
55 ft.
50 ft.
45 ft.
†
180 ft.
15 ft.
175 ft.
170 ft.
165 ft.
Max. Equivalent Length
Min. Equivalent Length
Number 1
of 2
90° Elbows 3