Nordyne M1B Series User Manual

¢708672;¤
708672A
O’Fallon, MO
708672A (Replaces 7086720)
Specifi cations and illustrations subject to change
without notice and without incurring obligations.
Printed in U.S.A. (09/09)
INSTALLER: Please leave
these installation instructions
with the homeowner.
21. EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES
(Includes 4% Input Reduction for Each 1,000 Feet)
Reference Sources: ANSI Z233.1 & NFPA 54, National Fuel Gas Code.
For Canadian high altitude (2,000 - 4,500’), reduce gas manifold pressure to 3.0”
W.C. for
natural gas and 9” W.C. for LP gas.
NOTE: Do not attempt to change the size of an orifi ce by drilling it out. To do so will
void the manufacturer’s warranty
Table 12. High Altitude
FURNACE ORIFICE SIZE AND ALTITUDE - FEET
MODEL OUTPUT CAPACITY SEA LEVEL 2000 3000 4000 5000 6000 7000 8000 9000 10000
ORIFICE SIZE - NAT. GAS 29 293030303031313132
M1M/G 056 ORIFICE SIZE - LP 45 46 47 47 47 48 48 49 49 50
OUTPUT- MBTUH 45.4 41.8 40.1 38.5 37.0 35.5 34.1 32.7 31.4 30.2
ORIFICE SIZE - NAT. GAS 24 252627272828292930
M1M/G 070 ORIFICE SIZE - LP 42 42 43 43 43 44 44 45 46 47
OUTPUT- MBTUH 56.7 52.3 50.2 48.2 46.2 44.4 42.6 40.9 39.3 37.7
ORIFICE SIZE - NAT. GAS 21 232324252627282829
M1M 077 ORIFICE SIZE - LP 40 41 42 42 42 43 43 44 44 45
OUTPUT- MBTUH 61.7 56.9 54.6 52.4 50.3 48.3 46.4 44.5 42.7 41.0
ORIFICE SIZE - NAT. GAS 21 232324252627282829
M1G 077 ORIFICE SIZE - LP 40 41 42 42 42 43 43 44 44 45
OUTPUT- MBTUH 59.9 55.2 53.0 50.9 48.9 46.9 45.0 43.2 41.5 39.8
ORIFICE SIZE - NAT. GAS 17 181919202122232426
M1M 090 ORIFICE SIZE - LP 36 37 38 38 39 40 41 41 42 43
OUTPUT- MBTUH 71.7 66.1 63.5 60.9 58.5 56.1 53.9 51.7 49.7 47.7
ORIFICE SIZE - NAT. GAS 17 181919202122232426
M1G 090 ORIFICE SIZE - LP 36 37 38 38 39 40 41 41 42 43
OUTPUT- MBTUH 69.7 64.2 61.7 59.2 56.8 54.6 52.4 50.3 48.3 46.3
ORIFICE SIZE - NAT. GAS 26 272828282929303030
M1B 066 ORIFICE SIZE - LP 43 44 44 44 45 45 46 47 47 48
OUTPUT- MBTUH 52.6 48.5 46.6 44.7 42.9 41.2 39.6 38.0 36.5 35.0
ORIFICE SIZE - NAT. GAS 18 191920212223242627
M1B 086 ORIFICE SIZE - LP 37 38 39 39 40 41 42 42 43 43
OUTPUT- MBTUH 68.2 62.9 60.3 57.9 55.6 53.4 51.2 49.2 47.2 45.3

Nordyne M1B Series Specifications

General

Brand	Nordyne
Model	M1B Series
Category	Furnace
Language	English