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Natural Gas Supply Piping
Maximum Capacity of Natural Gas Based on a 0.60 specific gravity at a 0.5” WC pressure drop
Pipe Size
kBTU of Natural Gas
Length 10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’
125’
150’
200’
¾”
372 255 205 175 156 142 130 121 114 107 95 86 74
1”
702 482 387 331 293 266 245 228 213 202 179 162 139
1
¼” 1441 990 795 680 603 546 503 468 439 415 367 332 285
1
½” 2158
1483
1191
1019 903 819 753 701 658 621 550 499 427
2”
4155 2856 2293 1963 1740
1576
1450
1349
1266
1195 1060 960 822
Propane (LP) Gas Supply Piping
Maximum Capacity of Propane (LP) Gas Based on 11” WC supply pressure at a 1.0” WC pressure drop
Pipe Size
kBTU of Propane
Length 10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’
125’
150’
200’
¾”
567 393 315 267 237 217 196 185 173 162 146 132 112
1”
1071 732 590 504 448 409 378 346 322 307 275 252 213
1
¼” 2205
1496
1212
1039 913 834 771 724 677 630 567 511 440
1
½” 3307
2299
1858
1559
1417
1275
1181
1086
1023
976 866 787 675
2”
6221 4331 3465 2992 2646
2394
2205
2047
1921
1811 1606 1496
1260
WATER CONNECTIONS
All pipes, pipe fittings, valves and other
components, including soldering materials,
must be suitable for potable water systems. A
manual shut off valve must be installed on the
cold water inlet to the water heater between
the main water supply line and the T-M1. In
addition, a manual shut off valve is also
recommended on the hot water outlet of the
unit. If the T-M1 is installed within, or subjected
to, a closed loop water system, such as one
having an anti-backflow device in the cold
water supply line, a thermal expansion tank
must be installed. Contact the water supplier or
local plumbing inspector on how to control this
situation.
After installation of the water heater is
complete, purge the water line to remove all
the debris and air from the line. Failure to do
so may cause damage to the heater. There is
a wire mesh filter within the cold inlet to trap
debris from entering your heater. This will need
to be cleaned periodically to maintain optimum
flow.
Unit Draining & Filter Cleaning Procedures
To drain your unit, please follow these
instructions carefully:
1. Turn off the power supply to the T-M1
Water Heater.
2. Close the manual gas shut off valve
located on the gas supply line.
3. Close the manual water shut off valve
located on the water supply line.
4. Open all hot water taps in the house.
(Bathroom, kitchen, laundry room, etc.).
When the residual water flow has ceased,
close all hot water taps.
5. Have a bucket or pan to catch the water
from the unit’s drain plugs. Remove the
drain plugs to drain all the water out of the
unit.
6. Wait a few minutes to ensure all water has
drained from unit.
7. At this time, please check the water filter
located within the cold inlet. With a tiny
brush, clean the water filter of any debris
which may have accumulated and reinsert
the filter back into the cold water inlet.
8. Securely screw the drain plugs back into
place. Hand- tighten only
Do not use this water heater if any part
has been submersed under water.
Immediately call a qualified service
technician to inspect the water heater and
to replace any damaged parts.
FOR YOUR SAFETY, READ
BEFORE OPERATING:
