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Power Gas
BOCK POWER GAS WATER HEATER
Bock Tank Assembly Parts List
When ordering repair parts, always give the part name, model
number, size and serial number.
ITEM DESCRIPTION
1. Cold Water Inlet Dip Tube
(not used on 33PG, 40PG and
541PG)
2. Plastic Cap
3. Magnesium Rod
4. Top Pan
5. Hot Out Nipple (available for
models 32PG, 33PG, 40PG and
51PG only)
6. Tank
7. Heater Jacket
8. Temperature & Pressure Relief
Valve
9. Immersion Well & Aquastat
10. Drain Valve
11. Burner Mounting Bracket
(32PG, 33PG, 40PG and 51PG)
12. Mounting Bracket Gasket
13. Bottom Pan
14. Combustion Chamber Sleeve
15. Combustion Chamber
16. Chamber Plug
17. Inspection Door
18. Burner
19. Burner Control (specify burner
make and model)
20. Hand Hole Cover (not used on
32PG, 33PG, 40PG and 51PG)
21. Hand Hole Gasket (not used on
32PG, 33PG, 40PG and 51PG)
22. High Limit Control (not used on
32PG, 33PG, 40PG,51PG, 71PG
and 72PG)
23. Gas Valve (specify burner make
and model)
24. Brass Inlet Bushing (not shown—
33PG and 40PG only)
ITEM DESCRIPTION
MIDCO BURNERS
CARLIN BURNERS
32PG, 33PG
104,000
EC200
2
#7
3.5" WC
#25
3.5" WC
40PG
126,000
EC200
5
H
3.5" WC
#19
3.5" WC
50PG
140,000
EC200
6
L
3.5" WC
#17
3.5" WC
51PG
152,000
EC200
4
19/64
3.5" WC
#7
3.5" WC
120PG
155,000
EC200
4
19/64
3.5" WC
#7
3.5" WC
71PG
173,000
EC200
9
NONE
3.5" WC
#3
3.5" WC
190PG
190,000
EC300
3.5
5/16
3.5" WC
#2
3.5" WC
72PG
199,000
EC300
4.5
P
3.5" WC
#1
3.5" WC
73PG
242,000
EC300
5
W
3.5" WC
G
3.5" WC
241PG
277,000
RE4400DS
1/2 OPEN
3/8
3.5" WC
M
3.5" WC
361PG
385,000
RE4400DS
3/4 OPEN
NONE
4.2" WC
N
3.5" WC
541PG
623,000
RE4700BA
1/2 OPEN
9/16
3.5" WC
23/64
3.5" WC
Orifice #
(nat. gas)
Manifold
Gas Pressure
(nat. gas)
Orifice #
(LP gas)
Manifold
Gas Pressure
(LP gas)
Bock Water Heater
Model
Fire Rate #
(Btu/hr)
Burner
Model
Air Setting*
(initial)
Bock Water Heater
Fire Rate #
Burner
Air Setting*
Orifice #
Gas Pressure Orifice # Gas Pressure
Model
(Btu/hr)
Model
(initial)
(nat. gas)
(nat. gas)
(LP gas)
(LP gas)
32 PG, 33 PG
104,000
Carlin EZ-GAS
25%
#2
3.5" WC
#18
3.5" WC
40 PG
126,000
Carlin EZ-GAS
45%
D
3.5" WC
#12
3.5" WC
50 ESPG
140,000
Carlin EZ-GAS
55%
F
3.5" WC
#5
3.5" WC
51 PG
152,000
Carlin EZ-GAS
60%
I
3.5" WC
#
7
⁄
32
3.5" WC
120 PG
155,000
Carlin EZ-GAS
60%
I
3.5" WC
#
7
⁄
32
3.5" WC
71 PG
173,000
Carlin EZ-GAS
30%
N
3.5" WC
#1
3.5" WC
190 PG
190,000
Carlin EZ-GAS
35%
P
3.5" WC
1
⁄
4
"
3.5" WC
72 PG
199,000
Carlin EZ-GAS
50%
O
3.5" WC
F
3.5" WC
73 PG
242,000
Carlin EZ-GAS
85%
23
⁄
64
"
3.5" WC
19
⁄
64
"
3.5" WC
*Products of combustion must be checked and air settings adjusted to give clean combustion. Typical O2 levels for Midco and Carlin burners are ~3.5%.
CO content must be under 100 ppm (OSHA), preferably zero.
#Contact Bock for high altitude applications.
#23388
Rev 6
7/2010
7.5
7.5
