Heat Controller HTD Ground-WaterHeat Pump Applications, Htv/Htd/Hth Series, Heat Controller, Inc

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Ground-Water Heat Pump Applications

mounted on the outlet of the water control valve. The device is typically a brass fitting with an orifice of rubber or plastic material that is designed to allow a specified flow rate. On occasion, flow control devices may produce velocity noise that can be reduced by applying some back pressure from the ball valve located on the discharge line. Slightly closing the valve will spread the pressure drop over both devices, lessening the velocity noise. NOTE: When

EWT is below 50°F [10°C], a minimum of 2 gpm per ton (2.6 l/m per kW) is required.

Water Coil Low Temperature Limit Setting

For all open loop systems the 30°F [-1.1°C] FP1 setting (factory setting-water) should be used to avoid freeze damage to the unit. See “Low Water Temperature Cutout Selection” in this manual for details on the low limit setting.

Figure 13: Typical Open Loop/Well Application

CAUTION!

CAUTION! Refrigerant pressure activated water regulating valves should never be used with this equipment.

8QLW3RZHU

'LVFRQQHFW

	:DWHU	)ORZ
		5HJXODWRU	3UHVVXUH
	&RQWURO
	9DOYH		7DQN
			:DWHU2XW
			:DWHU,Q
$LU3DGRU	7KHUPRVWDW		6KXW2II
			9DOYH
([WUXGHG
	:LULQJ		2SWLRQDO
SRO\VW\UHQH
			)LOWHU
LQVXODWLRQERDUG
		%RLOHU
	373OXJV	'UDLQV

14