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Master Catalog>>Section K - Appliances>>Paloma Tankless Water Heaters>>Page K-3
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NEW! Bosch Tankless Water Heaters
The Benefits of Going Tankless
Most North American consumers currently use storage tank water heaters to provide domestic hot water, using energy to keep water hot 24 hours a day, even while away from home or sleeping. However, a tankless water heater heats water only when it’s needed, making it significantly more energy efficient than storage tank models. All models featured below are CSA approved and available in LP-Gas or Natural Gas.
Standing Pilot Units
ProTanklessTM GWH-260-PN
This small gas tankless water heater is ideal for cottages, camps, and other specific applications where a small volume of hot water is desired. Compact size saves valuable floor space.
ProTanklessTM GWH-425-PN
Provides endless hot water for 1 major application at a time
Hydro-Generated Unit
ProTanklessTM GWH-425-HN
Patented Bosch Hydro-Generated Ignition Technology: The pilot is ignited by a super-concentrated spark generated by a micro-turbine. which is activated by a request for hot water in the house. Energy efficient technology to maximize energy savings.
Electric Ignition Unit
ProTanklessTM GWHC-800-ES
The new model offers a flow rate of up to 10 gpm, 92% efficiency, and the most advanced features in tankless technology, yet requires only 199,000 BTU/Hr input. It is designed to cascade for increased flow rates and will accommodate recirculating applications as well.
| Part Number |
Description |
Ignition | BTU/hr Input | Energy Factor | Thermal Efficiency | Weight | Order | |
| GWH-260-PN-L | Tankless Water Heater, LP-Gas | Standing Pilot | 74,900 | .64 | 78% | 25 lbs. |  |
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| GWH-260-PN-N | Tankless Water Heater, Natural Gas | .64 | ||||||
| GWH-425-PN-L | Tankless Water Heater, LP-Gas | 117,000 | .79 | 78% | 33 lbs. |  |
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| GWH-425-PN-N | Tankless Water Heater, Natural Gas | .69 | ||||||
| GWH-425-HN-L | Tankless Water Heater, LP-Gas | Hydro-Generated | 117,000 | .80 | 78% | 33 lbs. |  |
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| GWH-425-HN-N | Tankless Water Heater, Natural Gas | .80 | ||||||
| GWHC800ESLP | Tankless Water Heater, LP-Gas | Electronic | 199,000 | .90 | 92% | 74 lbs. |  |
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| GWHC800ESNAT | Tankless Water Heater, Natural Gas | .89 |
Bosch Tankless Water Heater Accessories
| Part Number | Description | Features | Order | |
| TLINK | Tankless Link | Cascading kit enables units to be connected together for increased output. For use with GWHC800ES models |  |
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| TSTAT2 | Wireless Remote | Wireless remote to control water temperature. Works throughout the house. For use with GWHC800ES models |  |
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| PTPC | Pipe Cover | Can be used either inside or outside to cover plumbing for a clean appearance. For use with GWHC800ES models |  |
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| AQ4 | Horizontal Power Vent Kit | Enables Horizontal Venting. For use with GWH-425-PN & GWH-425-HN models |  |
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| 9620LA | Brass Tankless Water Heater Valves | Allow you to isolate, purge, drain and test a tankless water heater from a single location with the ease of a quarter turn. |  |
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| BHW60L46 | Concentric Termination Kit | For use with GWHC800ES models |  |
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Paloma Tankless Gas Water Heaters
Paloma tankless hot water heater supplies all the hot water you need... on demand, instantaneously... only when you need it. Automatically adjusts flame to the water flow you select for a 50º to 100º temperature rise. Wall-mounted, space saving design. 43,800 to 178,500 BTU models, for any application, large or small. With push-button piezo igniter.
Paloma PH-20 and PH-28 Series Tankless Water Heaters
Features
and Benefits:
• Endless hot water on demand - using gas only when you need it
• Compact, space saving design
• Intelligent, electronic controls designed to increase energy efficiency and safety
• Waterproof digital remote control allows you to safely & conveniently control water temperature
• All of Paloma’s Digital Tankless heaters meet the standard for a high efficiency water heater under the Department of Energy standards
PH-20 Series NEW!
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Part Number |
Description |
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| PH-20RIFSP | LP-Gas - Indoor |  |
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| PH-20RIFSN | Natural Gas - Indoor | ||
| PH-20ROFP | LP-Gas - Outdoor |  |
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| PH-20ROFN | Natural Gas - Outdoor | ||
| PH-20RDVSP | LP-Gas - Direct Vent |  |
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| PH-20RDVSN | Natural Gas - Direct Vent | ||
PH-28 Series
19,000 - 199,900 BTU/hr input (modulated). Designed for use in recirculating or space heating systems, as well as traditional hot water supply systems. Ideal for multiple household applications or light commercial use. .66 to 7.4 GPM. Electronic controls, self-diagnostic program and digital display. Waterproof remote control included. Equipped with oxygen depletion safety device. Indoor models feature power vent. Ten year warranty on heat exchanger, 3 on parts. CSA certified. Electronic continuous sparking ignition.
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Part Number |
Description |
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PH-28RIFSP |
LP-Gas - Indoor mount |
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PH-28RIFSN |
Natural Gas - Indoor mount |
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PH-28ROFP |
LP-Gas - Outdoor mount |
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PH-28ROFN |
Natural Gas - Outdoor mount |
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| PH-28RDVSP |
LP-Gas - Direct Vent |
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| PH-28RDVSN |
Natural Gas - Direct Vent |
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Water Flow and Temperature Rise for PH-28 models
| Temperature Rise (°F) |
45° |
50° | 60° | 70° | 80° | 90° | 100° |
| Water Flow Rate (GPM) |
7.4 |
6.7 | 5.6 | 4.8 | 4.2 | 3.7 | 3.4 |
PH-24M
37,700 - 178,500 BTU input. Modulating burner (automatic output control device) equipped. The largest tankless water heater of its type. Superb for commercial and industrial use as well as large residential home. 2.6 to 4.5 GPM, 63°-110° F. temperature rise. AGA design certified. Push-button piezo igniter.
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Part Number |
Description |
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PH-24MDP |
Gas water heater, LP-gas |
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PH-24MDN |
Gas water heater, natural gas |
Paloma Repair Parts for PH-6, PH-12 and PH-24
Many additional Paloma parts are available. Log onto Online Ordering System or call for additional information and availability.
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Part Number |
Description |
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P6-109 |
Thermocouple, PH-6 |
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P12-156 |
Thermocouple, PH-12 |
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P24-156 |
Thermocouple, PH-24 |
Water Flow and Temperature Rise for PH-6, PH-12 and PH-24 Models
| Model |
Temperature
Adjusting
Knob
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Warm
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1
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2
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3
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4
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5
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Hot
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| PH-6D | Water
flow
(gpm) Max. Temp. rise (ºF) |
2.0
35 |
1.8
39 |
1.5
47 |
1.0
70 |
0.8
88 |
0.7
102 |
0.6
117 |
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Warm
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•••
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Hot
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| PH-12MD | Water
flow
(gpm) Max. Temp. rise (ºF) |
.79
–
1.59
60 |
60
–
100
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.48
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1.43
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1.59
100 90 |
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| PH-24MD | Water
flow
(gpm) Max. Temp. rise (ºF) |
.87
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3.17
60 |
60
–
100
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.52
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2.85
–
3.17
100 90 |
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Master Catalog>>Section K - Appliances>>Page K-3
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