Bosch Greenstar CRC100 Comfort Room Control

The CRC100 Comfort Room Control can be used for a heating system with one heating zone. This method of operation is used when the CRC100 is connected directly to the heat source. This will modulate the percentage of power output the heat source is supplying. The CRC100 can be used for one heating zone with a CZM100. A maximum of 8 heating zones is permitted when connected to several CZM100 Comfort Zone Managers. The CRC100 can be used as a controller for heat sources with an external indirect tank and circulator pump, but the DHW maximum temperature and priority settings are made at the heat source.

The part number for the Bosch Greenstar CRC100 Comfort Room Control is (7738110090).

Freeze Prevention Kit for Bosch Therm 520PN & 520HN Models

The Bosch Freeze Prevention Kit, part number 7709003775 is sold as an accessory and is approved for the Bosch Therm 520PN & 520HN heaters.  The Freeze Prevention Kit is designed to provide protection for the water heater down to approximately 5 degrees F for short term conditions only.  Power is required for the freeze prevention kit and plugs directly into a 110V outlet.   It will not protect the appliance in areas where the temperature is routinely expected to be below freezing.

The Freeze Prevention Kit will not protect plumbing outside the appliance from freezing.  Precautions should be taken to prevent this.

For more information and to order the Bosch Freeze prevention kit please call us at 866-289-4652.

Thermostat's for the New Bosch Tronic 3000T ES2.5 & ES4

The new Bosch Tronic 3000T ES2.5 & ES4 thermostat features a new sensing probe that is attached to the thermostat and inserts into the cavity of the new heating element so the heater can adjust temperatures quicker and maintain a more consistent heat.  The thermostat has an adjustment knob accessible from the outside of the unit on the front cover.  The temperature adjustment knob for the older models was located under the oval cover on the front of the unit.

The part number for the thermostat is 7738002302 and will work for the wholesale model ES2.5 & ES4 mini tank water heaters.  This thermostat will also work for the retail model Ariston GL2.5S & GL4S as well as the older Ariston Pro Ti GL2.5TiS and Ariston Pro Ti GL4TiS mini-tank electric water heaters.

The new thermostat will NOT work for any of the older Ariston GL2.5/GL4/GL2.5Ti or the GL4Ti electric mini-tank water heaters.

Model Numbers Pertaining to the Bosch Greenstar Combi and Straight Boilers

Below is a table describing the model numbers that pertain to the Bosch Greenstar gas-fired wall-hung boilers and combination boilers.

Z - Central heating appliance
W - DHW heating
B - Condensing technology
R - Constant temperature control
16 - Output up to 54,600 BTU/hr (16 kW)
21 - Output and DHW output up to 71,600 BTU/hr (21 kW)
28 - Output and DHW output up to 95,500 BTU/hr (28 kW)
35 - Output and DHW output up to 119,400 BTU/hr (35 kW)
42 - Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 - Version
A - Fan-supported appliance
23 - Natural gas (NG) conversion to Liquid Propane (LP) comes with boiler

So if you wanted to reference model number "ZWB42-3" this would be the model number for the Bosch Combi 151 Gas-Fired Wall-Hung Boiler for space heating and domestic hot water (DHW).
Z - Central heating appliance
W - DHW heating
B - Condensing technology
42 - Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 - Version

All Greenstar boilers and Combi units are fan assisted "A" and they all come preset for Natural Gas NG "23" but also come with the conversion kit for Liquid Propane LP.

Conversion:
Model #               Description
ZBR16-3             Bosch Greenstar Wall-Hung 57 Boiler
ZBR21-3             Bosch Greenstar Wall-Hung 79 Boiler
ZBR28-3             Bosch Greenstar Wall-Hung 100 Boiler
ZBR35-3             Bosch Greenstar Wall-Hung 131 Boiler
ZBR42-3             Bosch Greenstar Wall-Hung 151 Boiler
ZWB28-3            Bosch Greenstar Wall-Hung Combi 100 Boiler
ZWB35-3            Bosch Greenstar Wall-Hung Combi 131 Boiler
ZWB42-3            Bosch Greenstar Wall-Hung Combi 151 Boiler

Descaling Bosch Gas Tankless Water Heaters

All of the Bosch gas tankless water heaters both in natural gas (NG) and Liquid Propane (LP) should be descaled now and then on a periodic basis depending on the quality of the water in your area.  Some towns have low mineral content while others are very hard.  Scale is basically mineral deposits in the water that pass through the copper tubing of the heat exchanger and after heating up they stick to the insides of the copper piping and over long periods of time will restrict the flow of water through the heat exchanger causing issues and overheating. 

Global Pro Tankless Supply sells a Flow-Aide Descaling Kit that allows the user to flush the Bosch tankless water heater with not much work involved and eliminates the scale built up in the heater.

The Flow-Aide Descaler Kit comes with everything you need to quickly dissolve water scale, lime, rust, and other water formed deposits, restoring efficiency to all Bosch gas tankless water heaters.  This descaling kit will also work for all other gas tankless water heaters, boilers, etc.

Flow Aide System Descaler is a non-toxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems. Flow-Aide is the perfect descaling solution to keep your Tankless Water Heater in good operation. Combining Flow-Aide with one of our Isolation Valve Kits (Service Valves) will make the descaling process quick and easy!

Flow-Aide is: Non-Corrosive, Non-Toxic, Fully Biodegradable*, Safe to Handle, Zero V.O.C.

IMPROVE EQUIPMENT EFFICIENCY: Water scale deposits are a significant cause of heat transfer loss, along with the subsequent increase in energy costs. In fact, even a thin layer of scale (1/32") can cause a 30% increase in the cost to operate that piece of equipment. Keeping the heating passages free of mineral deposits significantly improves efficiency, conserves energy, extends the useful life of the equipment, and saves you time & money.

The Flow-Aide Descaling Kit includes the following:

1 - 3.5 Gallon Bucket
1 - 350 GPH Pump
2 - 5 Foot Rubber Hoses
1 - Quart Flow-Aide

There is also the Flow-Aide Descaling Kit PLUS which includes the Isolation Valve Kit (Service Valves).  We also sell additional quarts and gallons of the Flow-Aide Solution.

 

Bosch Therm C1050ES vs. Bosch Pro GWH C800ES

Recently the Bosch model GWH C 800 ES gas tankless water heater was changed to the new model name Bosch Therm C 1050 ES. The model name had changed to reflect gallons per minute (gpm) at a 35 degree temperature rise. So the Bosch Therm C1050ES would reflect a 35 degree temperature rise at 10.5 gpm. Along with this name change came many new features:

• Comes equipped with freeze prevention now.
• Has the capability to accept preheated water up to 140 degrees and is approved for domestic hot water (dhw), solar thermal and space heating applications in conjunction with an indirect tank.
• Has the ability to be cascaded using the Intelligent Cascade Kit for up to 24 units and would produce up to 290 gpm.

The temperature range for the Bosch C1050ES is from 100 - 140 degrees. With the use of the Bosch Therm High Temperature Kit the unit would have the ability to reach up to 180 degrees.