Heating; Higher Heating Water Return Temperatures; Heating Water Temperature Control - Viessmann ESS CHP Overview

5

Heating

5 Heating

5.1 Higher heating water return temperatures

Article number
Version
Function
Delivery

5.2 Heating water temperature control

Version
Function
Note
Note for mixer
Three-way valve body
Tab. 4 Sizing the components in the heating water return temperature raising assembly
Subject to changes due to technical improvements
18
CHP module type
EM-50/81, EM-70/115
EM-140/207
EM-238/363
Equipped with larger heat exchanger and if required matched cooling water pump
Higher heating water return temperatures 90 / 75 °C, e.g. for operation with an absorption cooling
system
• Please note: Heating output reduced by 5 % with the same energy usage
• Please note: After inspection, there may be additional maintenance costs due to the thermal load
of the engine oil
Fitted in the CHP module
See Viessmann catalogue
See Viessmann catalogue
The Vitobloc 200 contains a controller with a continuous output signal 0..10 V as standard. Via an on-
site mixing valve with servomotor, it regulates either the heating water return temperature or an on-site
variable speed heating water pump for a constant flow temperature.
Biogas modules should always be fitted with a heating water return temperature raising facility!
EM-50/81
EM-70/115
BM-36/66
BM-55/88
Internal diameter DN 40
Internal diameter DN 50
threaded connection
with fitting PN 16
k value 25 m /h
3
VS
Valve flow rate at 100 % lift
Heating water flow rate
Pressure drop
CHP module type
EM-199/263
EM-149/207
EM-199/293
BM-98/150
BM-190/238
BM-123/177
EM-238/363
Internal diameter DN 65
Flange PN 16
k value 40 m /h k
3
VS VS
ESS
710-00-0035
710-00-0036
710-00-0037
EM-363/498
EM-401/549
BM-366/437
Internal diameter DN 80
Flange PN 16 Flange PN 16
value 63 m /h k value 180 m
3
VS
ESS Energie Systeme & Service GmbH
CHP accessory range – 01/2010
Viessmann
7417749
7417750
7417751
/h
3