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TABLE 17
High Heat
Unit |
| CO2% For Nat | CO2% For L.P. |
G61MP−36B−045 |
| 6.5 − 7.5 | 7.4 − 8.4 |
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G61MP−36B−070 |
| 6.5 − 7.5 | 7.4 − 8.4 |
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G61MP−48C−090 |
| 6.9 − 7.9 | 7.8 − 8.8 |
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G61MP−60C−090 |
| 6.9 − 7.9 | 7.8 − 8.8 |
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G61MP−48C−110 |
| 7.2 − 8.2 | 8.1 − 9.1 |
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G61MP−60C−110 |
| 7.2 − 8.2 | 8.1 − 9.1 |
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G61MP−60D−135 |
| 7.4 − 8.4 | 8.3 − 9.3 |
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| TABLE 18 |
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| Low Heat |
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Unit |
| CO2% For Nat | CO2% For L.P. |
G61MP−36B−045 |
| 4.8 − 5.8 | 5.3 − 6.3 |
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G61MP−36B−070 |
| 4.8 − 5.8 | 5.3 − 6.3 |
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G61MP−48C−090 |
| 5.1 − 6.1 | 5.9 − 6.9 |
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G61MP−60C−090 |
| 5.1 − 6.1 | 5.9 − 6.9 |
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G61MP−48C−110 |
| 5.3 − 6.3 | 6.1 − 7.1 |
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G61MP−60C−110 |
| 5.3 − 6.3 | 6.1 − 7.1 |
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G61MP−60D−135 |
| 5.7 − 6.7 | 6.7 − 7.7 |
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H− High Altitude
NOTE − In Canada, certification for installations at eleva- tions over 4500 feet (1372 m) is the jurisdiction of local au- thorities.
The manifold pressure may require adjustment to ensure proper operation at higher altitudes. Refer to table 19 for proper manifold pressure settings at varying altitudes and required pressure switch changes and conversion kits at varying altitudes.
The combustion air pressure switches are factory−set and require no adjustment.
NOTE − A natural to L.P. propane gas changeover kit is nec- essary to convert this unit. Refer to the changeover kit installation instruction for the conversion procedure.
I− Condensate pH Range
The condensate is mildly acidic and can be measured with pH indicators. The pH scale is a measurement of acidity and alkalinity. The following scale shows the relative pH of some common liquids as compared with condensate of G61MP units. The concentration of the acidity of all these fluids including the condensate is very low and harmless.
pH RANGE
| 0 |
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| 1 |
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Increasing 2 |
| Vinegar | G61 Condensate | |
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Acidity | 3 |
| Wine | |
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4 |
| Orange Juice | pH Range | |
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5Tomato Juice
6
7 Tap Water
8
Increasing 9
Alkalinity 10
11
TABLE 19
Conversion Kit Requirements and Manifold Pressures
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| Altitude |
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| Manifold Pressure at all | |||||
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| altitudes |
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Model |
| 0−4500 ft. | 4501−7500 ft. | 7501−10,000 | Low Fire | High Fire | ||||||
Input | Gas | (0−1372 m) | (1373−2286 m) | (2287−3048 m) | ||||||||
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Size |
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| Required | Pressure | Required | Pressure | Required | Pressure | in. |
| in. |
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| Conversion | Conversion | Conversion | kPa | kPa | ||||||
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| Switch | Switch | Switch | w.c. | w.c. | ||||||
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| Kit | Kit | Kit |
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| Nat | N/A | No Change | N/A | No Change | 59M16 | No Change | 1.7 | 0.42 | 3.5 | 0.87 | |
−045 |
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| LPG | 59M13 | No Change | 59M13 | No Change | 59M14 | No Change | 4.9 | 1.22 | 10.0 | 2.5 | |
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| Nat | N/A | No Change | N/A | No Change | 59M16 | 56M06 | 1.7 | 0.42 | 3.5 | 0.87 | |
−070 |
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| LPG | 59M13 | No Change | 59M13 | No Change | 59M14 | 56M06 | 4.9 | 1.22 | 10.0 | 2.5 | |
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| Nat | N/A | No Change | N/A | 75M22 | 59M16 | 56M21 | 1.7 | 0.42 | 3.5 | 0.87 | |
−090 |
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| LPG | 59M13 | No Change | 59M13 | 75M22 | 59M14 | 56M21 | 4.9 | 1.22 | 10.0 | 2.5 | |
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| Nat | N/A | No Change | N/A | No Change | 59M16 | No Change | 1.7 | 0.42 | 3.5 | 0.87 | |
−110 |
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| LPG | 59M13 | No Change | 59M13 | No Change | 59M14 | No Change | 4.9 | 1.22 | 10.0 | 2.5 | |
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| Nat | N/A | No Change | N/A | 59M93 | 59M16 | 56M93 | 1.7 | 0.42 | 3.5 | 0.87 | |
−135 |
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| LPG | 59M13 | No Change | 59M13 | 59M93 | 59M14 | 56M93 | 4.9 | 1.22 | 10.0 | 2.5 | |
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Pressure switch is factory set. No adjustment necessary. All models use the factory installed pressure switch from 0−4500 feet (0−1370 m).
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