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Temp. Rise (°F) 35 45 50 60 70 77 90 100 110 120 130 140
Water Flow (GPM) 8.5 7.4 6.6 5.5 4.7 4.3 4.1 3.7 3.3 2.8 2.6 2.4
MAXIMUM HOT WATER FLOW RATE AND TEMPERATURE RISE CLEARANCE TO
COMBUSTIBLES (inches)
MODEL
NUMBER SIDE REAR
GT-199PV 1/2 0 12
GT-199X 1/2 0 12
Rheem-Ruud Heavy-Duty Tankless continued.
MODEL GAS INPUT CONNECTIONS APPROXIMATE
NUMBER BTU/HR AB C
DEPTH VENT* WATER GAS SHIPPING WEIGHT
GT-199PV 19,000-199,900 25-3/8 14-7/8 28-3/4 11-1/8 4 3/4 3/4 55 lbs.
GT-199X 19,000-199,900 25-3/8 14-7/8 22 11-1/8 N/A 3/4 3/4 55 lbs.
GT-199DV 19,000-199,900 25-3/8 14-7/8 28-3/4 11-1/8 4 by 4 3/4 3/4 55 lbs.
2-PIPE
DIMENSIONS (Inches)
Minimum flow rate required to initiate heating cycle .66 gpm.
Above estimates are for sizing purposes only.
A
C
REMOTE
CONTROL
B
POWER
F
A
B
REMOTE
CONTROL
POWER
F
C
FRONT
TOP &
BOTTOM
RHEEM-RUUD GT-199 MANIFOLD INSTALLATIONS
TEMP.
FLOW RATE (GPM)
RISE (°F) 1 UNIT 2 UNITS 5 UNITS 10 UNITS 15 UNITS 20 UNITS
140 2.4 4.8 12.0 24.0 36.0 48.0
130 2.6 5.2 13.0 26.0 39.0 52.0
120 2.8 5.6 14.0 28.0 42.0 56.0
110 3.0 6.0 15.0 30.0 45.0 60.0
100 3.3 6.6 16.5 33.0 49.5 66.0
90 3.7 7.4 18.5 37.5 55.5 74.0
80 4.2 8.4 21.0 42.0 63.0 84.0
70 4.8 9.6 24.0 48.0 72.0 96.0
60 5.6 11.2 28.0 56.0 84.0 112.0
50 6.7 13.4 33.5 67.0 100.5 134.0
45 7.4 14.8 37.0 74.0 111.0 148.0
35 8.5 17.0 42.5 85.0 127.5 170.0
# OF WATER HEATERS
2 3 TO 6 7 TO 20
PART NO. DESCRIPTION ACCESSORIES
RTG20040 EZ-Link
™
Cable 1 N/A N/A
MIC-180 Main Communication N/A 1 1
PCB w/ Manifold
Control Box
MICS-180 Extended N/A N/A 1
Communications
PCB
MIC-K-16 Communications N/A 3 to 6 7 to 20
Cable (16 ft.)
MIC-K-32 Communications N/A 3 to 6 7 to 20
Cable (32 ft.)
MIC-K-65 Communications N/A 3 to 6 7 to 20
Cable (65 ft.)
ACCESSORIES FOR MULTI-UNIT MANIFOLD INSTALLATIONS
GT-199PV (Indoor) GT-199X (Outdoor)
A
B
REMOTE
CONTROL
POWER
F
C
GT-199DV (Indoor)
• Specify natural or LP gas when ordering.
• Electrical rating: 120V, 60HZ, less than 2 amps. Indoor model supplied with 120 volt power cord.
* Category III stainless steel (UL1738 certified) vent is required.
Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com
PRINTED IN U.S.A 12/06 WP FORM NO. 101-24 Rev. 2
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.
Indoor and Direct Vent Models Vent Horizontally or Vertically
These water heaters have a built-in electric blower to force exhaust gas to the outside. Category
III stainless steel vent is (UL1738 certified) required in order to avoid damage from possible
condensation. Maximum vent length for GT-199 models is 47 feet 6 inches including one 90°
elbow. Maximum vent length for GT-199DV models is 47 feet 6 inches including two 90° elbows.
Type “B” vents are not permitted.
Indoor Models
Direct Vent Models
GT-199DV standard
termination
venting
side wall
GT-199DV sweet
termination
venting side wall
(Coming Soon!)
Venting side wall
from side
Venting side wall
from back
Required Direct Vent Termination Kits
Kits include the termination components only, vent pipe
from the heater to the termination is not included.
Horizontal and Vertical kits for Heat Fab and Protech
are available.
DIRECT VENT KITS
Model Termination Heat Fab Protech
GT-199DV Horizontal RTG-20032HHT RTG20034HPT
GT-199DV Vertical RTG20033VHT RTG20035VPT
GT-199DV Sweet RTG20058 N/A
For 5"-9" Wall Thickness
RTG20059
For 9"-13" Wall Thickness
RTG20060
For 13"-17" Wall Thickness