Rheem RTG74 User Manual

SVC 810 Tankless Troubleshooting Manual
5
Product (Model) History
Implementation
Date
Models
Affected
Modification/Upgrade New Parts Board
Programming
September 2004 RTG42 Initial Tankless Product
Launch
n/a n/a
May 2005 RTG74 Initial Product Launch n/a n/a
Dec 2006 RTG74 Gas Valve change; also
included new fuel supply
tubes from gas valve to
burner assembly
RTG74 Water pipes changed.
Removed the two speed
clips from the cold in and
water by-pass.
Second Generation
August 2006 RTG2 42 Upgraded product launch on
new chassis
n/a n/a
No air filter switch n/a n/a
RTG 53
series
Initial Product Launch n/a n/a
No air filter switch n/a n/a
‘dash one’
RTG74
Added EZ link function to
all similar models
EZ link Cable Yes
Added UMC Main remote
control as standard to all
models; allowed residential
units to heat to 140
0
F
UMC 117
Main
Yes
Removed 60 minute lockout
timer for return circulation
function
No Yes
Power Restore Auto On
feature added. Unit resets to
last recorded temperature
setting
No Yes
Water flow inlet valve
solenoid will close
completely when using EZ
link cable or MIC 180
No Yes
Allowed all 2
nd
generation
units to be installed with
MIC 180
No Yes
Sep29 + Oct
2006
New ‘dash
one’ RTG
74
RTG 74 chassis only Yes Yes

Rheem RTG74 Specifications

General

Brand	Rheem
Model	RTG74
Category	Water Heater
Language	English