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Indoor Outdoor TGPM PMPSSHLTGPM
P
MPS SHL
TGPMPMPSSHL
0133 0133 22 10 3.4 1-1/4 5.1 17 13 5.5 1-1/4 8.2 10 22 14.7 1-1/4 22.0
0182/
0181
0182 15 20 1.8 1-1/2 4.6 12 26 3.1 1-1/2 7.5 7 45 9.2 1-1/2 20.8
0260/
0
261
0260 21 20 1.9 1-1/2 4.6 17 26 3.1 1-1/2 7.6 10 45 9.4 1-1/2 21.0
0
330/0331
0330 27 20 1.9 1-1/2 4.7 21 26 3.2 1-1/2 7.7 12 45 9.6 1-1/2 21.2
0
400/
0
401 0400 30 22 2.3 1-1/2 5.6 25 26 3.3 1-1/2 7.8 15 45 9.8 1-1/2 21.3
0514 0514 20 42 2.0 2 4.8 16 52 3.0 2 7.1 9 90 9.0 2 19.1
0
624 0624 25 41 2.0 2 4.7 19 54 3.4 2 7.9 11 90 9.5 2 20.9
0724 0724 29 41 2.1 2 4.9 20 60 4.4 2 9.8 13 90 10.0 2 21.4
0
824 0824 30 45 2.6 2 5.9 20 68 6.0 2 12.8 15 90 10.5 2 21.9
0
962 0926 30 53 3.8 2-1/2 5.3 20 79 8.5 2-1/2 11.5 18 90 11.0 2-1/2 15.2
1125 1083 30 61 5.5 2-1/2 7.5 20 90 12.0 2-1/2 16.2 20 90 12.0 2-1/2 16.2
1
223 1178 30 67 7.0 2-1/2 9.3 22 90 12.5 2-1/2 16.7 22 90 12.5 2-1/2 16.7
1336 1287 30 73 8.7 2-1/2 11.5 24 90 13.3 2-1/2 17.5 24 90 13.3 2-1/2 17.5
1
468 1414 30 80 11.0 2-1/2 14.4 27 90 14.0 2-1/2 18.2 27 90 14.0 2-1/2 18.2
1631 1571 30 90 14.8 2-1/2 19.0 30 90 14.8 2-1/2 19.0 30 90 14.8 2-1/2 19.0
1826 1758 33 90 15.4 2-1/2 19.6 33 90 15.4 2-1/2 19.6 33 90 15.4 2-1/2 19.6
2
100 N/A 30 115 5.0 3 7.9 20 172 11.0 3 17.2 17 200 14.8 3 22.9
2500 N/A 30 137 7.5 3 11.4 20 200 15.8 3 23.9 20 200 15.8 3 23.9
3
001 N/A 30 164 11.2 3 17.0 25 200 16.7 3 24.8 25 200 16.7 3 24.8
3500 N/A 30 191 16.2 3 23.7 29 200 17.5 3 25.6 29 200 17.5 3 25.6
4001 N/A 33 200 18.7 3 26.8 33 200 18.7 3 26.8 33 200 18.7 3 26.8
BOLD TYPE indicates Low NOx models.
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WATER HARDNESS
M
ODELS
D
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M
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DEM
TF
OS
16-25 Grains Per Gallon*
Table I: General Specifications Uni-Temp 80 Hot Water Supply Systems
ΔT = Temperature Rise, Degree F@GPM FLOW
GPM = Gallons per Minute Flow
ΔP = Pressure Drop, Foot thru Heat Exchanger
MPS = Minimum Pipe Size, NPT
SHL = System Head Loss
* Must utilize optional cupro-nickel tubes. If over 25 grains per gallon, a water softener/treatment system must be utilized.
29270E86.<=2,8='*=.;
#>995B.*=.;<
Table I above provides data for selecting in-line pumps
for use in a Uni-Temp 80 system for a single heater
and tank according to the following:
1. Flow rates are based on water hardness as meas-
ured in grains per gallon.
Soft: 0-4 grains per gallon.
Medium: 5-15 grains per gallon.
Hard: 16-25 grains per gallon.
2. Maximum Flow Rates:
0133 22 GPM
0181-0401 45 GPM
0514-1826 90 GPM
2100-4001 200 GPM
3. Pressure drop values (ΔP and SHL) and minimum
pipe sizes are for two-pass heaters.
4. Sizing based on heater and tank being placed 5
feet apart. The equivalent length of pipe, valves
and fittings in the system is as follows:
1-1/2" NPT = 70 Ft (0181-0401)
2" NPT = 75 Ft (0514-0824)
2-1/2" NPT = 80 Ft (0926-1826)
3" NPT = 85 Ft (2100-4001)
Additional pipe fittings will increase the system
head loss.
5. Select a pump based on the water hardness, flow,
and system head loss.
6. If heater is more than two stories above the tank,
consult the factory.
MINIMUM INPUT ADJUSTMENT: Model Types WH
have minimum input ratings as specified on their indi-
vidual rating plates. Minimum input controllers have
been pre-set at the factory. Consult with factory repre-
sentatives if a minimum input problem should occur.
$ GPM flow rates are limited by maximum
acceptable velocity through heat exchanger tubes.
Heater models 0514 through 1826 may be provided
with an integral rear-mounted pump. This must be
specified at time of order.