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35
Fig. 44 — Typical Heat Exchanger Assembly
Burners and Igniters
MAIN BURNERS
To access the burner section, open the heater access door below
the indoor fan panel. At the beginning of each heating season,
inspect for deterioration or blockage due to corrosion or other
causes. Observe the main burner flames and adjust, if neces-
sary. Flames should be conical in shape and enter the heat ex-
changer tubes with minor impingement on sheet metal flame
components.
ORIFICE PROJECTION
Refer to Fig. 45 for maximum projection dimension for orifice
face to manifold tube.
Fig. 45 — Orifice Projection
REMOVAL AND REPLACEMENT OF GAS TRAIN
See Fig. 39, 44, and 46.
1. Shut off gas using the manual shutoff switch located in the
gas supply line.
2. Turn the gas valve ON/OFF knob to the OFF position.
3. Shut off power to unit and install lockout tag.
4. Disconnect gas piping at unit gas valve.
5. Remove wires connected to gas valve. Mark each wire to
assist in re-connecting power to the gas valve.
BURNER A
SS
EMBLY
GA
S
VALVE
INDUCER FAN
MOTOR A
SS
EMBLY
VE
S
TIBULE PLATE
S
UPPORT IN
S
ULATION
A
SS
EMBLY
HEATER TUBE
A
SS
EMBLY
S
EAL
S
TRIP
S
(
S
PONGE RUBBER)
REGULATOR
GA
S
KET
REGULATOR
RETAINER
WIND CAP A
SS
EMBLY
(
S
HOWN INVERTED
A
S
S
HIPPED)
~
MOUNTING
S
CREW
S
(2)
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this CAUTION can result in premature
wear and damage to equipment.
When working on gas train, do not hit or plug orifice spuds.
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution can result in personal injury.
Disconnect all electrical power when servicing the gas
train. Apply appropriate lockout/tag-out procedures.
ORIFICE
1.00-in
(25.4 mm)
MANIFOLD
PIPE
Summary of Contents for WeatherMaster Puron 48HC D17
Page 18: ...18 COOLING CHARGING CHARTS Fig 22 Cooling Charging Chart 15 Ton ...
Page 19: ...19 Fig 23 Cooling Charging Chart 17 5 Ton ...
Page 20: ...20 Fig 24 Cooling Charging Chart 20 Ton ...
Page 21: ...21 Fig 25 Cooling Charging Chart 25 Ton ...
Page 37: ...37 Fig 48 Unit Control Box IGC Location IGC Board IGC Board Side view Front view ...
Page 40: ...40 Fig 51 Typical IGC Wiring Diagram ...
Page 46: ...46 Fig 57 RTU Open Overlay for Economizer Wiring ...
Page 47: ...47 Fig 58 VFD Overlay for W2770 Controller Wiring ...
Page 84: ...84 Fig B 48HC D17 D28 Control Diagram 208 230 3 60 460 575 3 60 ...
Page 85: ...85 Fig C 48HC D17 D28 Power Diagram 208 230 3 60 ...
Page 86: ...86 Fig D 48HC D17 D28 Power Diagram 460 3 60 ...
Page 87: ...87 Fig E 48HC D17 D28 Power Diagram 575 3 60 ...
Page 88: ...88 Fig F 48HC D17 D28 Control Diagram with Humidi MiZer System ...
Page 89: ...89 Fig G 48HC D17 D28 Power Diagram 208 230 3 60 with Humidi MiZer System ...
Page 90: ...90 Fig H 48HC D17 D28 Power Diagram 460 3 60 with Humidi MiZer System ...
Page 91: ...91 Fig I 48HC D17 D28 Power Diagram 575 3 60 with Humidi MiZer System ...
Page 92: ...92 Fig J PremierLink System Control Wiring Diagram 50HE500891 F ...
Page 93: ...93 Fig K PremierLink System Control Wiring Diagram with Humidi MiZer System ...
Page 94: ...94 Fig L RTU OPEN Wiring Diagram ...
Page 95: ...95 Fig M RTU OPEN Wiring Diagram with Humidi MiZer System ...
Page 97: ......