MGB
P/N 240010095, Rev. E [03/2015]
MGB SERIES II
Cast Iron Gas Fired Boilers
For Forced Hot Water
PARTS AND OPTIONAL
ACCESSORIES
Manufactured by:
ECR International, Inc.
2201 Dwyer Avenue, Utica NY 13501
web site: www.ecrinternational.com
Check our website frequently for updates: www.ecrinternational.com
Ordering Instructions
Order Parts through your nearest supplier.
When ordering parts, obtain Model Number and Serial Number from
data plate on your boiler.
Include following information when ordering.
Part Number
Part Description
Boiler Model Number
Boiler Serial Number
Models
MGB-50J
MGB-75J
MGB-100J
MGB-125J
MGB-150J
MGB-170J
MGB-200J
2
Item
#
Description Part # Qty.
1
BURNER TUBE 1 1/2" - 50
240005543
1
BURNER TUBE 1 1/2" - 75, 100 2
BURNER TUBE 1 1/2" - 125, 150 3
BURNER TUBE 1 1/2" - 170, 200 4
2
BASE W/INSUL - 50 5611601
1
BASE W/INSUL - 75, 100 5611602
BASE W/INSUL - 125, 150 3001823
BASE W/INSUL - 170, 200 5611604
3
BURNER DOOR - 50 109009071
1
BURNER DOOR - 75, 100 109009072
BURNER DOOR - 125, 150 109009073
BURNER DOOR - 170, 200 109009074
4
GAS VALVE VR8204H - 50 - 150 SPARK
NAT
VG01101
1
GAS VALVE VR8304H4 - 170-200 SPARK
NAT
VG01103
GAS VALVE VR8304 - 50-200 SPARK LP VG01104
Item
#
Description Part # Qty.
5 SCREW ¼ - 20 X ½ SELF TAP HW-005.01 4
6
MANIFOLD - 50 356-2-1.01
1
MANIFOLD - 75 & 100
356-2-1.02
MANIFOLD - 125 & 150
356-2-1.03
MANIFOLD - 170 & 200
356-2-1.04
7
ORIFICE 3.2mm NAT - 50, 100, 150, 200, 240007406
*
ORIFICE 2.9mm NAT - 125, 170 240007403
ORIFICE 2.8mm NAT - 75 240007402
ORIFICE #45 LP - 50 3551520
ORIFICE #47 LP - 100, 150, 200 355-1-5.04
ORIFICE #49 LP - 125 & 170 355-1-5.06
ORIFICE #50 LP - 75 355-1-5.07
NOT SHOWN
COMBUSTIBLE BASE FLOORING - 50 325-2-8.01
1
COMBUSTIBLE BASE FLOORING - 75, 100 325-2-8.02
COMBUSTIBLE BASE FLOORING - 125, 150 325-2-8.03
COMBUSTIBLE BASE FLOORING - 170, 200 325-2-8.04
*
Orice Quantities: Model 50 - qty 1; Model 75 & 100- qty 2; Model 125 &
150- qty 3; Model 170 & 200 - qty 4
REPLACEMENT PARTS - BASE
BOILER BASE
1
2
3
4
5
6
3
REPLACEMENT PARTS - HEAT EXCHANGER
Fully Assembled Heat Exchangers
912000001 Heat Exchanger (2 Section)
912000002 Heat Exchanger (3 Section)
912000003 Heat Exchanger (4 Section)
912000004 Heat Exchanger (5 Section)
ROLLOUT & BLOCKED VENT SAFETY SWITCH
Item
#
Description Part # Qty.
1
2, 3 SECTION TEMP. SENSOR BRACKET (Rollout) 32611001 1
4 SECTION TEMP. SENSOR BRACKET (Rollout) 109008517 1
5 SECTION TEMP. SENSOR BRACKET (Rollout) 109008518 1
2
CONTROL-FIXED TEMPERATURE THERMO (ROLLOUT
SWITCH AND BLOCKED VENT SAFETY SWITCH)
AQ02101 1
3 SCREW - #6 X ¼ HEX HD HW06501 2
Rollout switch is located on base; blocked vent safety switch on ue collector.
NOTE: Quantities above are for each switch.
1
2
3
HEAT EXCHANGER
ROLLOUT & BLOCKED VENT SAFETY SWITCH
2,3 Section Bracket Shown
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