6
iTem
DescriPTion
ParT #
1
Burner Assy (50,000 Btu)
90264
2
Burner Mounting Bracket
90265
3
Igniter
90266
4
Pressure Relief Valve (PRV)
90267
5
Modulating Valve Assembly
90268
6
Gas Valve
90269
7
Gas Line – Burner
90270
8
Relay
90271
9
Water Inlet Tube
90272
10
Gas Inlet Tube
90273
11
Ignition Control
90274
12
Flue Outlet Screen
90275
13
Flue Tube
90276
14
Pressure Switch
90277
15
Blower Assembly
90278
16
Fan Base
90279
17
Flue Hood Assembly
90280
18
Case Assembly
90281
19
Heat Exchanger
90282
20
ECO
90283
21
Low Temperature Switch Kit
90346
22
Orifice #71 (50,000 Btu)
90286
23
Pressure Elbow Assy
90287
nS
Standard Door Kit (specify color)
Inquire
nS
Large Door Kit (specify color)
Inquire
nS
Winter Kit
90290
WATer HeATer PArTs lIsT
2
3
4
5
6
8
9
10
11
12
13
14 15
16
17
7
18
19
21
20
22
1
23
trouBLESHooting
Most problems are easily remedied by consulting the trouble-
shooting guide. If problems still persist, contact Atwood or an
authorized service center. Only a qualified technician should do
any work involving the gas system.
A periodic visual check of the burner flames should be done
by observing the flame through the “peep hole” in the heat
exchanger. There should be blue flame with minimum or no
yellow tipping.
Burner maintenance should be performed by an Atwood
Authorized Service Technician.
NOTE:
The heater is dormant until it senses water
flow. When a water tap is turned on to at least .5 GPm
the burner will fire until water flow is turned off and
the heater again goes dormant.
Heater Does not come on When The Water is turned
on. (Power vent not running)
1. Be sure all electrical connectors are secure and the
polarity is correct. (Red wire to positive terminal).
2. Be sure power is on and panel breaker is not tripped.
3. Check electrical contacts. Be sure the connector is
plugged into board. Using a voltmeter, check for 12 Volts
on this connector.
4. Fuse in power wire might be blown. Replace fuse.
