Milnor 5050, Service Manual

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Pellerin Milnor Corporation
Several types of
Dungs
gas train and the two types of flame control stated above are available to
meet different local codes. Applicable models will use one of the types of gas train, correspond-
ing flame control, and corresponding setup method listed in the following table. This instruction
describes one general procedure, but indicates where you will do something one way or the other,
depending on which of the two setup methods you use (which type of flame control you have).
Table 2. Gas Train and Flame Control Options
Type of Gas Train Brand of Flame Control Setup method
Natural Gas, CSA Fireye Setup Mode
Propane, CSA Fireye Setup Mode
Natural Gas, IRI Fireye Setup Mode
Natural Gas, Europe Gyr Manual (dry code) method
Propane, Europe
Gyr Manual (dry code) method
Natural Gas, Australia Gyr Manual (dry code) method
Propane, Australia Gyr Manual (dry code) method
Natural Gas, Holland Gyr Manual (dry code) method
2. Summary of Steps and Required Values (Air Heat)
BNDGUM01.C02 0000336921 C.2 B.3 2/14/22, 2:27 PM Released
Table 3. Applicable Models
Step
Gauge
Points 1
5050TG_ 6450TG_ 6458TG_, 6464TG_ 7272TG_
Fireye L+G Fireye L+G Fireye L+G Fireye L+G
1
Static (incoming)
gas pressure
2
GGS
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
13.5
(33.6)
2
Combustion air
pressure
GAC
and
GRC
0.4 (1) 0.14 (.35) 0.6 (1.5) 0.6 (1.5) 0.6 (1.5) 0.6 (1.5) 0.6 (1.5) 0.6 (1.5)
Combustion air
damper
full open full open 0.9 (.22) 0.9 (.22) 0.9 (.22) 0.9 (.22) 0.9 (.22) 0.9 (.22)
3
Main air pressure
test
— —
1.6 (4) 1.6 (4) 1.6 (4) 1.6 (4) 1.6 (4) 1.6 (4)
Main air pressure
final
GAM
0.7 (1.7) 0.7 (1.7) 2.4 (6) 2.4 (6) 2.4 (6) 2.4 (6) 2.4 (6) 2.4 (6)
4
Pilot gas regulator
GGP
1.3 (3.2) 1.3 (3.2) 1.6 (4) 1.3 (3.2) 1.6 (4) 1.3 (3.2) 1.6 (4) 1.3 (3.2)
Pilot flame – natu-
ral gas
1 (2.5) 1 (2.5) 1 (2.5) 1 (2.5) 1 (2.5) 1 (2.5) 1 (2.5) 1 (2.5)
Pilot flame –
propane
n.a. — —
Turn adjusting screw one full turn.
— —
Outlet pressure
spring – propane
only
n. a. — — 1.3 — —
5
Gas regulator
GGR
4.5 (11.2)
4.5
(11.2)
6.5 (16.2) 6.5 (16.2) 6.5 (16.2) 6.5 (16.2) 5.5 (13.7) 5.5 (13.7)
6
Minimum fire tem-
perature ABOVE
AMBIENT
n. a.
Natural gas: 70º F (21º C) to 80º F (27º C) (view on display)
n. a. — —
Propane: Set minimum fire (min Y) on the mod-
ulating gas valve to 17
— —
Damper setting n. a.
2
7
High gas pressure
GGH
5.6 (14) 5.6 (14) 8.13 (20.3)
8.13
(20.3)
8.13
(20.3)
8.13
(20.3)
6.87"
(17.1)
6.87"
(17.1)
Set the Heating System—Air Heat Dryer
25