Series HAB
Page 6
LT169 Aug 10, 2021
Specifications
Important
Installation or repair should only be done by a qualified service person. The heater should be
inspected before use and at least annually by a qualified service person.
The heater and its individual shutoff valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of ½ psig (3.5
kPa)
The heater must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas supply piping system at test pressures
equal to or less than ½ psig (3.5 kPa)
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Power & Gas Specifications
Gas Supply (Natural Gas ONLY)
HAB-M20
HAB-M40
HAB-M50
Rated Input
High Fire Rate
20,000
40,000
50,000
Low Fire Rate
15,000
32,000
42,000
Inlet Pressure
Maximum
14.0” W.C.
14.0” W.C.
14.0” W.C.
Minimum
7.0” W.C
7.0” W.C
7.0” W.C
Manifold Pressure
Maximum
6.2” W.C.
6.3” W.C.
6.3” W.C.
Minimum
3.0” W.C.
4.5” W.C.
4.5” W.C.
Inlet Connection
½” Male NPT
Electrical Supply
Alternating current AC, voltage; 24 V, 60 Hz with L, N and Ground (GND).
Note:
24V transformer not supplied.
High Altitude Installation
When installing this heater over 4500 ft. above sea level in Canada, the heater must be properly de-
rated and installed according to local codes. In the absence of local codes, the heater must be de-
rated in accordance with the most recent CSA -B149 code. In the United States for installations over
2000ft above sea level the heater must be installed in accordance with the Current National Fuel Gas
Code, ANSI Z223.1/NFPA 54 (the heater shall be de-rated 4 percent for each 1000 ft of elevation
above sea level).
